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Propulsion Engines (Medium Speed)
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YANMAR Technical Review – Archive
Issue
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Development of Engine Technologies for Carbon-Neutral Fuels
Fossil fuels have transformed the fabric of society in many ways. With their high energy densities*1 and ability to deliver a large…
December 8, 2023
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Topic 1: Second Report on GHG Emission Reductions from Use of Ammonia Engines Computational Approach to Assessing Emissions of NH3-Diesel Dual-Fuel Engine
While ammonia is a promising substitute for fossil fuels, some disadvantages are its low burning speed and…
December 8, 2023
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Topic 2: A Study on Combustion Improvement in Dual-fuel Engine for Biogas Applications
As the biogas produced by methane fermentation contains a high fraction of carbon dioxide, it is necessary to understand…
December 8, 2023
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Topic 3: Development of TNG Series Spark-Ignition Engines for Industry Development of Technology for Multi-Fuel Operation in Anticipation of Decarbonization
Given the need to reduce greenhouse gases around the world, continued growth is expected in the use of alternative fuels…
December 8, 2023
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Motor Thermal Analysis for Electrification of Machinery Thermal Analysis of Electric Motors Using Finite Element Method and Thermal Equivalent Circuit
Recently, the demand for environmental performance has been increasing in the automobile industries and other industries. Therefore…
December 8, 2023
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Solutions for Reliable Oyster Farming Production Use of Biotech Practices
Japan’s oyster farming industry has been suffering from poor harvests of wild seed and high levels of mortality due to…
December 8, 2023
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Development of Agricultural Spraying Method with Reduced Spray Use and Improved Leaf Coverage Innovative New Technique for Tractor-Mounted Sprayers
In pesticide spraying, the extent of spray drift to areas other than target crops is proportional to the amount sprayed. Along with…
December 8, 2023
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Achievement of Ultra-Low Noise on New ViO80-7 Hydraulic Backhoe
Hydraulic backhoes operate by using pressurized hydraulic fluid (oil) to transmit high levels of energy. The engine…
December 8, 2023
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YH700M Full-Feeding Combine Harvester Development of Combine Harvester for Low-Cost and Efficient Harvesting of Crops Other than Rice
Improving food self-sufficiency is more important than ever for Japan given the current global situation, which includes some countries…
December 8, 2023
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Development of Emergency Generators that Resolve Value Chain Issues Remote Monitoring Services that Reassure Customers
Maintaining the supply of electric power during disasters is an important part of business continuity planning, with…
December 8, 2023
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YC100 Composter for Resource Recycling Food Production
Yanmar’s YC100 composter was developed to facilitate recycling in food production. Its features include stirring claws…
December 8, 2023
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Editor's Postscript
昨年に続き、2023年号を皆様にお届けできたことを、編集委員一同、大変嬉しく思っております。ヤンマーテクニカルレビューは、エンジニアの…
December 8, 2023
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Publication of “YANMAR GREEN CHALLENGE 2050” Edition of YANMAR Technical Review
At Yanmar, we have long conducted business in a way that prioritizes the natural environment since our founding in 1912, as expressed in our mission statement, which …
September 30, 2022
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Development of Maritime Hydrogen Fuel Cell System
Amid a rapid upsurge in global efforts to reduce GHG emissions, hydrogen is increasingly being recognized for its potential as a clean energy source able to …
September 30, 2022
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Offering of Total Energy Services: Feature introduction of Y-EMS
Efforts to reduce energy consumption are critical for achieving ‘Carbon Neutrality’. Along with gas heat pumps and cogeneration systems, the …
September 30, 2022
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Development of Efficient VETUS Modular E-DRIVE Systems: Full Electric Propulsion System and Energy Management Technology for Boats
As the need to reduce greenhouse gas emissions becomes a priority, many governments have flagged electric transport as a part of the solution. Cars, scooters …
September 30, 2022
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Power Generation Technology Using Waste Heat: Stirling Engine
In order to enable the reduction of CO2 emission, Yanmar has been developing power generation systems that uses exhaust heat generated from various …
September 30, 2022
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Effects of Reducing GHG Emissions: Calculation and Experimental Study of Fundamental Characteristics of Ammonia-Diesel Dual-Fuel Engines
While NH3 is a promising substitute for fossil fuels, its low burning speed and low ignitability are major challenges. One way to address this in internal combustion engines is …
September 30, 2022
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Energy Conversion from Waste Heat to CO2-Free Electric Power: Development of kW-Class Thermoelectric Power Generator with Loop Thermosiphon Heat Exchanger
In order to enable the reduction of CO2 emission, Yanmar has been studying the power generation that uses exhaust heat generated from various …
September 30, 2022
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Introduction of Dual-Fuel Engine Second Report: Efforts for a Decarbonized Society
The shipping industry has been studying alternative fuels and technologies able to replace petroleum-based fuels as part of its efforts toward …
September 30, 2022
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Development of New Diesel Engine 4TN107 for Off-Road Machinery: Achievement of Class-Leading Fuel Efficiency and High Power Density
Yanmar has developed the new 4TN107 series of 4.6 L diesel engines with power outputs up to 155 kW. The new engines provide customers of medium and …
September 30, 2022
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Toward World-Leading Electrical Generation Efficiency: Development of EP420G Gas Engine Cogeneration System
Gas engine cogeneration systems are a clean and energy-efficient means of burning city gas (made up mainly of natural gas) to generate electric power, with …
September 30, 2022
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Development of High-Efficiency GHP: Toward an Energy-Saving Lifestyle for Our Customers and a Society Where They Can Work and Live with Peace of Mind
Improving energy conversion efficiency is an important issue if society is to become more environmentally friendly. Yanmar Energy System Co., Ltd. has …
September 30, 2022
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YANMAR’s Controlled Fertilization: You Can Implement a Fertilization Planning!
More uniform crop growth is a key to achieving higher yield and quality. While past practice has been for the rice transplanter operator to adjust fertilizer application …
September 30, 2022
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Electronic Control Technology for Easier Vessel Operation: VC20 Electronic Vessel Control System
Launched in 2011, the VC10 was the first electronic vessel control system to be developed by Yanmar. The system has since been used to control various different types of …
September 30, 2022
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Publications, Awards and Honors
Q.Piao, T.Kakisaka, M.Konoto et al., Cooperative Control of Multi-Input Modular DC/DC Converter for Electric Off-Highway Vehicles, IEEJ Transactions on Industry Applications, 2021…
September 30, 2022
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Editor's Postscript
On behalf of everyone involved in the publication of this journal, we would like to express our sincere thanks to all of our readers. This latest issue is our first in …
September 30, 2022
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Development of Yield Sensor for Full-feeding Combine Harvesters: Enhancing Yield Visualization
Considerable progress is being made across a variety of fields on the development of smart technologies based on information and communication technology (ICT) and the …
March 26, 2020
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Manufacturing Technology Group
Yanmar is involved in a diverse range of businesses that encompass agriculture, pleasure boats, large marine engines, energy, construction machinery, and industrial …
March 26, 2020
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EX34A Recreational Fishing Boat: Next-Generation Fishing Cruiser
The EX33 went on sale in 2009, featuring a largest-in-class cabin in order to satisfy market demands that emphasized comfort as well as suitability for fishing. The model …
March 26, 2020
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Two-stage Turbocharging for Four-Stroke Medium-Speed Diesel Engines 2nd Report
At a time of rising concern about making the transition to a world of low greenhouse gas emissions, Yanmar is working relentlessly to reduce engine fuel consumption …
March 26, 2020
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Path Tracking Controller for Agricultural Vehicle
With rises in global population comes the problem of food shortages. For instance, in Japan the number of farmers is decreasing, while their average age is rapidly …
March 26, 2020
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Marine Gears: Technology for Enhancing Vessel Comfort
Yanmar powerboats are equipped with highly reliable diesel engines that combine high output with fuel efficiency, with notable models including fishing boats that …
March 26, 2020
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Editor's Postscript
With just one week of March remaining, we would like to express our deepest appreciation to you for taking the time to read this journal during the busy end-of-year …
March 26, 2020
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YR8D, A Auto-Rice Transplanter: Greater Labor Savings when Used with High-Density Seedlings
As the shortage of agricultural workers worsens, there is a need for machinery that can work at the same level as a skilled operator regardless of who is operating it. …
October 1, 2019
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New ViO20 Excavator: Designed for High-End Functionality
Designed with zero tail swing (such that the rear of the rotating upper structure never extends outside the width of the crawlers), a feature that ensures a high level of safety, …
October 1, 2019
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Reliability Case Study of an Integrated Hydrostatic Transaxle
Tuff Torq has produced over one million units per year for the past five years, with the majority of those being integrated hydrostatic transaxles (IHT) like the K46 shown in Figure …
October 1, 2019
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Development of Large Capacity, High Efficiency GHP Chiller: World's Largest Capacity GHP Chiller
Gas heat pump (GHP) air conditioners help reduce electricity usage by running instead on clean natural gas. The GHP chiller described in this report takes advantage of the features …
October 1, 2019
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3TNV80FT Industrial Engine: Achieving World-Leading Torque Performance for a 1L Diesel Engine
Yanmar’s sub-19 kW small diesel engines have earned a good reputation in the market for using mechanical fuel injection to comply with the latest emission regulations, including …
October 1, 2019
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A Study of Gas-Diesel Dual Fuel Combustion for Higher Thermal Efficiency and Lower Emissions
Since diesel engines deliver high economical performance, they are widely used to power automobiles and various types of industrial machinery. However, they are facing stringent …
October 1, 2019
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Automated Testing of Agricultural Machinery Control Software without Machinery: Hardware-in-the-Loop Simulator
Yanmar has been working to improve the functionality and performance of agricultural machinery with the aim of achieving sustainable agriculture. Electronic control plays a big …
October 1, 2019
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Editor's Postscript
Of the four seasons, spring and autumn are the ones which are most comfortable, and they are my favorite time of year. In recent years however, I feel that these seasons have …
October 1, 2019
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Self-Driving Robot Tractor: Yanmar Technology for Sustainable Agriculture
Agriculture is facing a difficult environment with a population of farmers that is both ageing and shrinking, a trend that will only accelerate further …
April 3, 2019
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Bio Innovation Center Kurashiki Laboratory
Yanmar established the Bio Innovation Center Kurashiki Laboratory ("Kurashiki Laboratory" hereafter) in August 2016 as a center for research and development …
April 3, 2019
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Automatic Navigation Boat Technology: Development of the Robotics Boat
The safe operation of small crafts is a matter of importance, with accidents that occur during vessel operation making up 75% of all marine accidents. …
April 3, 2019
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Development of 6EY26DF Dual-Fuel Engine: Compliant with IMO Tier 3
With increasing restrictions having been placed on emissions of atmospheric pollutants over recent years, there is a need for further reductions in the …
April 3, 2019
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Application of Low-Viscosity Oil to Diesel Engine Valve Train
With reducing emissions of greenhouse gases posing a challenge for industry as a whole, there is rising demand for energy efficiency in industrial machinery, …
April 3, 2019
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Technologies Used in HMT Unit for Corn Harvesters for the Chinese Market: A Behind-the-Scenes Mechanism with an Important Role in End Product Performance
Along with reforms to the sector’s economic systems, agriculture in China has entered a phase in which mechanization predominates. Use of machinery is growing …
April 3, 2019
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Editor's Postscript
With the arrival of spring, I am pleased to be publishing our first issue of the new business year. Here at the editorial team, we intend to bring a fresh feel …
April 3, 2019
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HL10,U Leek Harvester: More Efficient and Easier to Use
Leek harvesters are used to harvest long onions, these machines reduce labor requirements and shorten harvesting times by combining the four harvesting …
November 1, 2018
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Product Technology Overview for New SV60 Excavator: Designed for Business Class Levels of Comfort
The most common type of hydraulic excavator in Yanmar's range is the ViO series of "true zero tail swing" models in which the rear of the superstructure …
November 1, 2018
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YANMAR CONSTRUCTION EQUIPMENT EUROPE S.A.S.
Yanmar Construction Equipment Europe (YCEE) is a mini excavators factory based at Saint-Dizier, in France. In 1989, Yanmar and a Swiss company, Amman which is …
November 1, 2018
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Development of Yanmar Energy Management System (Y-EMS)
Yanmar Energy System Co., Ltd. has progressively improved the performance of the energy systems, specifically gas engine combined heat and power systems …
November 1, 2018
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4LV Series of Next-Generation Marine Engines: Outperforms Existing Models on Acceleration and Noise Level
Small diesel engines are a core product of Yanmar and marine engines form a part of this product range. These are particularly well known in Europe and America …
November 1, 2018
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Application of Phenomenological Models for Diesel Combustion under Various Operating Conditions
Yanmar has supplied power train systems to customers around the world based on a motto "Best energy with the minimum impact on the environment". The power source …
November 1, 2018
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Editor's Postscript
Thank you for your continued readership. The seasons continue to come and go and we find ourselves deep into autumn. Talk of autumn conjures up thoughts of a time …
November 1, 2018
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Technology for Improving Comfort in Small Pleasure Boat: Wakuwaku-Boat Technology
Among the requirements for pleasure boats are that they provide the comfort to enhance the excitement of travelling across the open sea, and the delight …
April 13, 2018
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Marine SCR System for Compliance with IMO NOx Tier 3 Regulations
The Tier 3 NOx emissions regulations (IMO3) of the International Maritime Organization (IMO) that came into force on January 1, 2016 stipulate an 80% reduction …
April 13, 2018
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YANMAR AGRICULTURAL EQUIPMENT (CHINA) CO., LTD. Profile
Yanmar Agricultural Equipment (China) Co., Ltd. (YNC), formally Jiangsu Yanmar Co., has established in 1998 in Wuxi City, Jiangsu Province, and will celebrate its …
April 13, 2018
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Innovative Low-Cost, Labor-Saving Technology for Rice Transplanters Using Dense Seedling and Automatic Adjustment of Planting Depth
As Japan has been making a shift to greater scale in paddy-rice cultivation over recent years, the raising and transplanting of seedlings has emerged as an obstacle to …
April 13, 2018
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Design Method for Hydro-Mechanical Transmission for Vehicle: Prediction of Noise Based on 1D and 3D Simulation
Conventional tractors transmission technology mainly consists of "mechanical" or "hydraulic" types. Fig.1 shows appearance of newly developed HMT (Hydraulic Mechanical …
April 13, 2018
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Low-Noise Technology for Gear Design
As a component manufacturer within the Yanmar Group, Kanzaki Kokyukoki Mfg. Co., Ltd. develops, manufactures and sells hydraulic equipment and various transmissions. …
April 13, 2018
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Editor's Postscript
The new fiscal year has commenced, with comfortable spring weather that is invigorating for both nature and our spirits. I keep hearing reports about blossoming …
April 13, 2018
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Development of All-In-One Hybrid Air-Conditioning System: New Air Conditioning System Concept to Take Advantage of Liberalization of Electricity and Gas Markets
As a consequence of the constrained balance of supply and demand for electric power since the Great East Japan Earthquake, there has been steady growth …
October 5, 2017
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Technologies used in New C30R-3 Crawler Carrier: Ease-of-Operation and Capacity for Work Enhanced by Adoption of 2P2M System
A crawler carrier is a type of construction machine with crawler tracks and equipped with a dump vessel for carrying loads. This type of machine is categorized …
October 5, 2017
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Business of Yanmar S.P.
Yanmar S.P. Co. Ltd (hereinafter referred to as “YSP”) will next year celebrate its 40th anniversary, having commenced the operations as part of the former …
October 5, 2017
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Prediction for SCR Systems Performance using 3D CFD Simulation: Aiming at SCR Development for Various Layouts
Diesel engines are widely used in industrial machinery because of their fuel efficiency and high levels of reliability and durability. However, emissions regulations for …
October 5, 2017
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Utilization of Waste Heat from Hot Water: Desiccant Technology
In keeping with its brand statement of “A Sustainable Future”, Yanmar is taking steps to tackle global warming that include the development of techniques for utilizing …
October 5, 2017
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High Accuracy Stress Prediction Technology for Cast Iron Material: Improvement of Elastoplastic Analysis Technology
Use of CAE in industry has grown rapidly over recent years, with strength analysis being one application of particular importance. One example of where strength …
October 5, 2017
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Editor's Postscript
On the occasion of YANMAR Technical Review's third year of publication, I would like to thank all of you for your zealous reading. My job as editor preparing articles …
October 5, 2017
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Development of Zero Emission Generating System "Stirling Engine"
Realizing the goal expressed in Yanmar's brand statement of "A SUSTANABLE FUTURE" requires not only reductions in CO2 emissions but also…
January 27, 2016
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Technologies Used in New ViO80 Hydraulic Excavator～New ViPPS2i Hydraulic Drive System Combines Environmental and Operational Performance ～
Among the hydraulic excavator lineup from Yanmar Construction Equipment, the ViO series has been accepted in the market and led the industry with the…
January 27, 2016
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6/8EY33 Series of High-Power and Fuel-Efficient Diesel Engines～Raising Life Cycle Value for the Customer～
Yanmar has developed its EY series of large marine diesel engines that feature low fuel consumption and excellent durability based on the concepts of…
January 27, 2016
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Kanzaki Brand HSTs～High-Capacity HSTs～
HST is an abbreviation for Hydro-Static Transmission. HSTs are closed-circuit power transmission mechanisms made up of a hydraulic axial piston pump and…
January 27, 2016
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New 35kW Gas Micro Cogeneration System with Easier Indoor Installation and Higher Energy Efficiency
Gas engine cogeneration systems use a gas engine to generate electric power and save energy by utilizing the waste heat from the gas engine for heating and…
January 27, 2016
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Yanmar Technical Symposium 2016 (Ytec 2016)
The Yanmar Technical Symposium 2016 (Ytec 2016) was held in Fukuoka City over two days on October 20 and 21.This symposium has started in 2014 and is now in its third year.…
January 27, 2016
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Editor's Postscript
It feels like only the other day that we welcomed in the New Year and yet January is already at an end. Time just keep flying by.Yanmar has been holding its "Ytec"…
January 27, 2016
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Research & Development Center Celebrates the 60th Anniversary
With the aim of developing technology and products with a long-term outlook and expanding its buisiness, the research section of the engineering department at…
October 27, 2016
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Introduction to Yanmar America (YA)
For more than one hundred years, Yanmar has been developing the world's leading engine technologies and products to enrich people's lives and create a more sustainable future.…
October 27, 2016
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Product Technologies Used in New YT4/5 Series of Tractors which Adopted the Premium Design
The large sizes tractors were made full model changes as YT4/5 series in the spring of 2015 correspondingly to the timing of new exhaust emissions regulations in Japan and overseas.…
October 27, 2016
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Technologies Used in Emission Regulation Compliant Stoichiometric Combustion Gas Engines for Micro Co-Generation
Micro co-generation systems achieve a high level of overall efficiency by using exhaust heat to recover the energy from fuel in the form of heat (hot water) as…
October 27, 2016
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EX38A Fishing and Pleasure Boat -Designed for Superior Comfort-
The Yanmar EX38A was developed based on the product concept of building a "Deep Fishing Cruiser" to experience the full wonders of fishing in its various different forms,…
October 27, 2016
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Prediction and Evaluation of Leveling Performance for Rotary Tillers
A wide variety of factors contribute to the performance of rotary tillers, including harrowing, soil turning, leveling, ability to plow in paddy straw, and power requirements.…
October 27, 2016
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Editor's Postscript
This year the lingering heat is severe in Japan, with 30-degree days continuing even into October. As we look forward to the arrival of Fall in earnest, I hope all of our readers…
October 27, 2016
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Development of High Efficiency BP-G 300kW-Class Biogas Co-Generation System
While use of gas engine co-generation systems has grown for reasons of effective energy utilization, CO2 emissions reduction, and better economic performance…
July 27, 2016
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New 4JH Marine Engine: An Electronically Controlled Diesel Engine that Sets A New Standard for the Sail Boat Market
Yanmar's small diesel engines are well known for their use as propulsion in sail boats and other pleasure boats as well as in…
July 27, 2016
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Two-stage Turbocharging for Four-Stroke Medium-Speed Diesel Engines
Marine diesel engines have long been subject to a variety of requirements that include better fuel economy, higher output, ability to use heavy fuel oil, and…
July 27, 2016
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IHT the Top-share Transaxle for Lawn Tractors
The integrated hydrostatic transaxle (IHT), which consists of a hydrostatic transmission (HST) and gear drive train in one housing, was first in the world developed…
July 27, 2016
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Use of Model-Based Techniques for Marine Engine Development
The engine speed, load, and other operating conditions for marine engines vary widely depending on the use and specifications of the vessels in which they are installed…
July 27, 2016
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Prior-Evaluation of Electrical Components to Improve Product Quality～Efforts in the Quality Analysis Center～
Final products produced and marketed by Yanmar, such as tractors, construction machinery, and generators, contain thousands of individual parts, with some…
July 27, 2016
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Editor's Postscript
How are all of our readers getting along in the hot summer months, which appear to be characterized by a succession of major events and important news from…
July 27, 2016
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Introduction to Yanmar Kota Kinabalu R&D Center (YKRC)
Yanmar Kota Kinabalu R&D Center (YKRC) in Malaysia was established on Jan 2008, located in the State of Sabah, Borneo Island of Malaysia. Yanmar currently…
April 27, 2016
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The Introduction of the Mini Tiller "YK-MR" Series "More simply, More easily"
This is the 26th year since Yanmar commercialized its mini tiller. During this time, our models have evolved to be equipped as standard with a mechanism that…
April 27, 2016
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Introduction of Yanmar New Wheel Loader "V3-7" "V4-7" "V5-7"
Articulated wheel loaders are wheeled construction machineries used for excavation and loading with a large bucket. The body structure is articulated ("Frames…
April 27, 2016
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Research and Development of Marine Engine that Operates with Biofuel – Evaluation of Refined Breached Deodorized Palm Oil (RBDPO) –
Considered to be carbon-neutral, biofuels based on vegetable oil reduce CO2 emissions when blended with fossil fuels in accordance with the amount of…
April 27, 2016
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Development of Oil Cooling Type Nitriding Nozzle for Large Diesel Engines
In recent years, in addition to compliance with exhaust gas regulations, improved fuel economy, increased LCV (Life Cycle Value) and higher output have also been…
April 27, 2016
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TRIBOLOGY for Product Reliability and Safety (Application of TRIBOLOGY Technology to Improve Reliability of Air Conditioner Compressor)
An OECD glossary defines tribology as “the science and technology of interacting surfaces in relative motion and of related subjects and practices”. In other…
April 27, 2016
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Editor's Postscript
Now that the new fiscal year has begun and one month is passing by quickly, the busy month of April is over, perhaps those of you who have moved on to new…
April 27, 2016
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Technology ｘ Design：GHP K1series Development(XAIRⅡ)
With Japan having suffered from electricity shortages since the Great East Japan Earthquake, the GHP XAIR has achieved good sales since its product launch in April…
January 27, 2016
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Introduction of Minimal Swing Radius Excavator "B7-6" that has Evolved Comfort and Equips SIGMA Boom.
The minimal-swing-radius hydraulic excavator (MSRX), sold mainly in the Japanese market, is characterized by having an implement with a boom that can be offset to either side.…
January 27, 2016
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The Technical Supports to Design the Cabin Noise more Comfortable
The expected requirements for living environments of buildings such as hotels and hospitals is very high level these days and measures for preventing vibration and noise…
January 27, 2016
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Introduction to Machine Tools Used in Gear Processing ～Development of Machine Tools for High Precision Gears at Low Cost～
Part of the Yanmar Group, Kanzaki Kokyukoki Mfg. Co., Ltd. operates a component manufacturing business that produces hydraulic equipment and transmissions, and marine an…
January 27, 2016
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Improvement for Working Space Comfort (Prediction of Tractor Vibration)
Yanmar is continually working on ways to improve tractor working space comfort by reducing vibration and noise. In particular, given the tendency for faster speeds when…
January 27, 2016
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Editor's Postscript
Happy New Year to all of our readers!I would like to thank everyone who has read YANMAR Technical Review over this past year and wish you all the best for the coming year.…
January 27, 2016
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The New TNV Engine Series : World’s First Engine Complies with Swiss PN Regulations
Because diesel engines have low fuel consumption and excellent durability and reliability, they are widely used as a power source for industrial machinery. On the other…
October 27, 2015
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Construction of New Service System Infrastructure by SMARTASSIST
The history of the remote information systems of Yanmar started 28 years ago in 1987 with the operation of the Remote Energy Support System (RESS), which targeted diesel…
October 27, 2015
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Development of the Intelligent Combine Harvester which Contributes to Increase in Productivity of Agriculture
Agriculture in Japan has been undergoing major changes in recent years associated with trends such as an aging workforce and a shrinking consumer population. Of the…
October 27, 2015
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The Introduction of the Pleasure Fishing Boat “EX30B”～The Development of the Cruising Boat that Satisfies Suitability for Fishing and Interior Comfort at a High Level.～
Although the EX30B is the smallest model in the Wide EX Series, Yanmar did not think "It's the smallest model so there's nothing special…
October 27, 2015
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Study of Electric-Field-Assisted Spark Ignition
The advantages of lean burn in terms of lower heat losses and higher specific heat ratio make it an effective way to improve the thermal efficiency of spark ignition engines.…
October 27, 2015
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Secure File Exchange System for Improving the Speed of Research and Development (cnct-partner)
The sharing of information via computer networks has become essential to business. To expedite research and development (R&D), Yanmar is also making greater use of external…
October 27, 2015
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Yanmar Technical Symposium 2015 (“Ytec”)
For two days from this past October 1st and 2nd , Yanmar held its Yanmar Technical Symposium 2015, “Ytec,” at the Kobe Portopia Hotel.…
October 27, 2015
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Editor's Postscript
The seasons change quickly, with the heat of summer now gone, and already deep into autumn, we are now publishing our third issue. This time, in addition to technical papers…
October 27, 2015
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Development of Class-leading High-Efficiency Gas Engine Co-Generation System
Increasing use is being made of gas engine co-generation systems fuelled with natural gas because of their energy efficiency, low CO2 emissions, and superior…
July 27, 2015
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High Reliability and Environmentally-friendly Mechanical Controlled Commercial Marine Diesel Engine 6CXB-GT
Because the time taken to travel to and from the fishery can have a significant impact on fish catches and price, the development and commercialization of marine…
July 27, 2015
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Dual-Fuel Marine Engine (Highly Reliable Environmentally Friendly Engine)
To prevent air pollution from ships, regulations covering pollutants such as nitrogen oxides (NOx) and sulfur oxides (SOx) specified under the 1997 International…
July 27, 2015
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Hydraulic Front Wheel Drive (HFWD) That Reduces Damage for a Lawn
Vehicles with two-wheel drive do not damage the lawn so badly unless sudden acceleration or braking is activated. On the other hand vehicles with four-wheel drive…
July 27, 2015
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Novel Thermal Management in an Engine Room using Non-Parametric Sensitivity Analysis
Industrial vehicles are characterized by operating at a higher engine load and generating more heat than passenger cars. And also they travel more slowly and their…
July 27, 2015
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Editor's Postscript
After the spring edition of YANMAR Technical Review was published, the editorial team was interested to find out just how many people were reading the articles.…
July 27, 2015
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On the Inaugural Publication of YANMAR Technical Review
Welcome to the inaugural edition of YANMAR Technical Review. On November 19, 2014 at our new headquarters, the Yanmar Flying…
April 10, 2015
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Yanmar Combine Harvester Steering System Fulltime Drive System (FDS)
In 2006, Yanmar won the Osaka Outstanding Invention Award for its forced differential transmission steering system for combine…
April 10, 2015
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Establishment of Heat Treatment Analysis Technique ~Improvement in Analysis Accuracy of Phase Transformation During Induction Hardening~
As internal combustion engines have been made lighter in recent years with higher outputs, there is a trend toward higher loads being…
April 10, 2015
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Vibration Transfer Path Analysis for Combine Harvester Using Multibody Dynamics for Engine Hybrid Method Combining CAE and Experiment
Diesel engines are the main power source used in agricultural and construction machinery and also a source of vibration. Engine…
April 10, 2015
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ViO45/55-6 Product Technology Overview
In 1993, Yanmar led the world by introducing the ViO series of excavators with zero tail swing. The series subsequently underwent…
April 10, 2015
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First YANMAR Gasification system in Europe
From 2005 to 2012 renewable electricity generation in Europe grew by 61% (average pace of 7.1%/year), whereas the overall…
April 10, 2015
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Editor's Postscript
Do you know what the Yanmar mission statement says? As no doubt many of you are unfamiliar with it, I have reprinted it here.…
April 10, 2015
Article Type
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Topic 2: A Study on Combustion Improvement in Dual-fuel Engine for Biogas Applications
As the biogas produced by methane fermentation contains a high fraction of carbon dioxide, it is necessary to understand…
December 8, 2023
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Topic 3: Development of TNG Series Spark-Ignition Engines for Industry Development of Technology for Multi-Fuel Operation in Anticipation of Decarbonization
Given the need to reduce greenhouse gases around the world, continued growth is expected in the use of alternative fuels…
December 8, 2023
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Motor Thermal Analysis for Electrification of Machinery Thermal Analysis of Electric Motors Using Finite Element Method and Thermal Equivalent Circuit
Recently, the demand for environmental performance has been increasing in the automobile industries and other industries. Therefore…
December 8, 2023
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Solutions for Reliable Oyster Farming Production Use of Biotech Practices
Japan’s oyster farming industry has been suffering from poor harvests of wild seed and high levels of mortality due to…
December 8, 2023
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Development of Agricultural Spraying Method with Reduced Spray Use and Improved Leaf Coverage Innovative New Technique for Tractor-Mounted Sprayers
In pesticide spraying, the extent of spray drift to areas other than target crops is proportional to the amount sprayed. Along with…
December 8, 2023
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HL10,U Leek Harvester: More Efficient and Easier to Use
Leek harvesters are used to harvest long onions, these machines reduce labor requirements and shorten harvesting times by combining the four harvesting …
November 1, 2018
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Development of 6EY26DF Dual-Fuel Engine: Compliant with IMO Tier 3
With increasing restrictions having been placed on emissions of atmospheric pollutants over recent years, there is a need for further reductions in the …
April 3, 2019
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Product Technology Overview for New SV60 Excavator: Designed for Business Class Levels of Comfort
The most common type of hydraulic excavator in Yanmar's range is the ViO series of "true zero tail swing" models in which the rear of the superstructure …
November 1, 2018
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Technologies Used in HMT Unit for Corn Harvesters for the Chinese Market: A Behind-the-Scenes Mechanism with an Important Role in End Product Performance
Along with reforms to the sector’s economic systems, agriculture in China has entered a phase in which mechanization predominates. Use of machinery is growing …
April 3, 2019
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Development of Maritime Hydrogen Fuel Cell System
Amid a rapid upsurge in global efforts to reduce GHG emissions, hydrogen is increasingly being recognized for its potential as a clean energy source able to …
September 30, 2022
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Offering of Total Energy Services: Feature introduction of Y-EMS
Efforts to reduce energy consumption are critical for achieving ‘Carbon Neutrality’. Along with gas heat pumps and cogeneration systems, the …
September 30, 2022
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Development of Efficient VETUS Modular E-DRIVE Systems: Full Electric Propulsion System and Energy Management Technology for Boats
As the need to reduce greenhouse gas emissions becomes a priority, many governments have flagged electric transport as a part of the solution. Cars, scooters …
September 30, 2022
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Power Generation Technology Using Waste Heat: Stirling Engine
In order to enable the reduction of CO2 emission, Yanmar has been developing power generation systems that uses exhaust heat generated from various …
September 30, 2022
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Effects of Reducing GHG Emissions: Calculation and Experimental Study of Fundamental Characteristics of Ammonia-Diesel Dual-Fuel Engines
While NH3 is a promising substitute for fossil fuels, its low burning speed and low ignitability are major challenges. One way to address this in internal combustion engines is …
September 30, 2022
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Energy Conversion from Waste Heat to CO2-Free Electric Power: Development of kW-Class Thermoelectric Power Generator with Loop Thermosiphon Heat Exchanger
In order to enable the reduction of CO2 emission, Yanmar has been studying the power generation that uses exhaust heat generated from various …
September 30, 2022
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On the Inaugural Publication of YANMAR Technical Review
Welcome to the inaugural edition of YANMAR Technical Review. On November 19, 2014 at our new headquarters, the Yanmar Flying…
April 10, 2015
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Editor's Postscript
After the spring edition of YANMAR Technical Review was published, the editorial team was interested to find out just how many people were reading the articles.…
July 27, 2015
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Editor's Postscript
Now that the new fiscal year has begun and one month is passing by quickly, the busy month of April is over, perhaps those of you who have moved on to new…
April 27, 2016
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Self-Driving Robot Tractor: Yanmar Technology for Sustainable Agriculture
Agriculture is facing a difficult environment with a population of farmers that is both ageing and shrinking, a trend that will only accelerate further …
April 3, 2019
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3TNV80FT Industrial Engine: Achieving World-Leading Torque Performance for a 1L Diesel Engine
Yanmar’s sub-19 kW small diesel engines have earned a good reputation in the market for using mechanical fuel injection to comply with the latest emission regulations, including …
October 1, 2019
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Kanzaki Brand HSTs～High-Capacity HSTs～
HST is an abbreviation for Hydro-Static Transmission. HSTs are closed-circuit power transmission mechanisms made up of a hydraulic axial piston pump and…
January 27, 2016
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Path Tracking Controller for Agricultural Vehicle
With rises in global population comes the problem of food shortages. For instance, in Japan the number of farmers is decreasing, while their average age is rapidly …
March 26, 2020
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Two-stage Turbocharging for Four-Stroke Medium-Speed Diesel Engines 2nd Report
At a time of rising concern about making the transition to a world of low greenhouse gas emissions, Yanmar is working relentlessly to reduce engine fuel consumption …
March 26, 2020
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Marine Gears: Technology for Enhancing Vessel Comfort
Yanmar powerboats are equipped with highly reliable diesel engines that combine high output with fuel efficiency, with notable models including fishing boats that …
March 26, 2020
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Editor's Postscript
The seasons change quickly, with the heat of summer now gone, and already deep into autumn, we are now publishing our third issue. This time, in addition to technical papers…
October 27, 2015
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Yanmar Technical Symposium 2015 (“Ytec”)
For two days from this past October 1st and 2nd , Yanmar held its Yanmar Technical Symposium 2015, “Ytec,” at the Kobe Portopia Hotel.…
October 27, 2015
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Secure File Exchange System for Improving the Speed of Research and Development (cnct-partner)
The sharing of information via computer networks has become essential to business. To expedite research and development (R&D), Yanmar is also making greater use of external…
October 27, 2015
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Editor's Postscript
Happy New Year to all of our readers!I would like to thank everyone who has read YANMAR Technical Review over this past year and wish you all the best for the coming year.…
January 27, 2016
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Development of Yanmar Energy Management System (Y-EMS)
Yanmar Energy System Co., Ltd. has progressively improved the performance of the energy systems, specifically gas engine combined heat and power systems …
November 1, 2018
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Technology for Improving Comfort in Small Pleasure Boat: Wakuwaku-Boat Technology
Among the requirements for pleasure boats are that they provide the comfort to enhance the excitement of travelling across the open sea, and the delight …
April 13, 2018
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Marine SCR System for Compliance with IMO NOx Tier 3 Regulations
The Tier 3 NOx emissions regulations (IMO3) of the International Maritime Organization (IMO) that came into force on January 1, 2016 stipulate an 80% reduction …
April 13, 2018
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Development of All-In-One Hybrid Air-Conditioning System: New Air Conditioning System Concept to Take Advantage of Liberalization of Electricity and Gas Markets
As a consequence of the constrained balance of supply and demand for electric power since the Great East Japan Earthquake, there has been steady growth …
October 5, 2017
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Technologies used in New C30R-3 Crawler Carrier: Ease-of-Operation and Capacity for Work Enhanced by Adoption of 2P2M System
A crawler carrier is a type of construction machine with crawler tracks and equipped with a dump vessel for carrying loads. This type of machine is categorized …
October 5, 2017
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Technologies Used in New ViO80 Hydraulic Excavator～New ViPPS2i Hydraulic Drive System Combines Environmental and Operational Performance ～
Among the hydraulic excavator lineup from Yanmar Construction Equipment, the ViO series has been accepted in the market and led the industry with the…
January 27, 2016
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6/8EY33 Series of High-Power and Fuel-Efficient Diesel Engines～Raising Life Cycle Value for the Customer～
Yanmar has developed its EY series of large marine diesel engines that feature low fuel consumption and excellent durability based on the concepts of…
January 27, 2016
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New 35kW Gas Micro Cogeneration System with Easier Indoor Installation and Higher Energy Efficiency
Gas engine cogeneration systems use a gas engine to generate electric power and save energy by utilizing the waste heat from the gas engine for heating and…
January 27, 2016
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Development of Large Capacity, High Efficiency GHP Chiller: World's Largest Capacity GHP Chiller
Gas heat pump (GHP) air conditioners help reduce electricity usage by running instead on clean natural gas. The GHP chiller described in this report takes advantage of the features …
October 1, 2019
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A Study of Gas-Diesel Dual Fuel Combustion for Higher Thermal Efficiency and Lower Emissions
Since diesel engines deliver high economical performance, they are widely used to power automobiles and various types of industrial machinery. However, they are facing stringent …
October 1, 2019
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Automated Testing of Agricultural Machinery Control Software without Machinery: Hardware-in-the-Loop Simulator
Yanmar has been working to improve the functionality and performance of agricultural machinery with the aim of achieving sustainable agriculture. Electronic control plays a big …
October 1, 2019
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Automatic Navigation Boat Technology: Development of the Robotics Boat
The safe operation of small crafts is a matter of importance, with accidents that occur during vessel operation making up 75% of all marine accidents. …
April 3, 2019
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Application of Low-Viscosity Oil to Diesel Engine Valve Train
With reducing emissions of greenhouse gases posing a challenge for industry as a whole, there is rising demand for energy efficiency in industrial machinery, …
April 3, 2019
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Development of High-Efficiency GHP: Toward an Energy-Saving Lifestyle for Our Customers and a Society Where They Can Work and Live with Peace of Mind
Improving energy conversion efficiency is an important issue if society is to become more environmentally friendly. Yanmar Energy System Co., Ltd. has …
September 30, 2022
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EX34A Recreational Fishing Boat: Next-Generation Fishing Cruiser
The EX33 went on sale in 2009, featuring a largest-in-class cabin in order to satisfy market demands that emphasized comfort as well as suitability for fishing. The model …
March 26, 2020
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Development of Yield Sensor for Full-feeding Combine Harvesters: Enhancing Yield Visualization
Considerable progress is being made across a variety of fields on the development of smart technologies based on information and communication technology (ICT) and the …
March 26, 2020
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Electronic Control Technology for Easier Vessel Operation: VC20 Electronic Vessel Control System
Launched in 2011, the VC10 was the first electronic vessel control system to be developed by Yanmar. The system has since been used to control various different types of …
September 30, 2022
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YANMAR’s Controlled Fertilization: You Can Implement a Fertilization Planning!
More uniform crop growth is a key to achieving higher yield and quality. While past practice has been for the rice transplanter operator to adjust fertilizer application …
September 30, 2022
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Editor's Postscript
Do you know what the Yanmar mission statement says? As no doubt many of you are unfamiliar with it, I have reprinted it here.…
April 10, 2015
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Yanmar Technical Symposium 2016 (Ytec 2016)
The Yanmar Technical Symposium 2016 (Ytec 2016) was held in Fukuoka City over two days on October 20 and 21.This symposium has started in 2014 and is now in its third year.…
January 27, 2016
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Editor's Postscript
It feels like only the other day that we welcomed in the New Year and yet January is already at an end. Time just keep flying by.Yanmar has been holding its "Ytec"…
January 27, 2016
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Research & Development Center Celebrates the 60th Anniversary
With the aim of developing technology and products with a long-term outlook and expanding its buisiness, the research section of the engineering department at…
October 27, 2016
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Introduction to Yanmar America (YA)
For more than one hundred years, Yanmar has been developing the world's leading engine technologies and products to enrich people's lives and create a more sustainable future.…
October 27, 2016
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Prior-Evaluation of Electrical Components to Improve Product Quality～Efforts in the Quality Analysis Center～
Final products produced and marketed by Yanmar, such as tractors, construction machinery, and generators, contain thousands of individual parts, with some…
July 27, 2016
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YC100 Composter for Resource Recycling Food Production
Yanmar’s YC100 composter was developed to facilitate recycling in food production. Its features include stirring claws…
December 8, 2023
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Achievement of Ultra-Low Noise on New ViO80-7 Hydraulic Backhoe
Hydraulic backhoes operate by using pressurized hydraulic fluid (oil) to transmit high levels of energy. The engine…
December 8, 2023
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YH700M Full-Feeding Combine Harvester Development of Combine Harvester for Low-Cost and Efficient Harvesting of Crops Other than Rice
Improving food self-sufficiency is more important than ever for Japan given the current global situation, which includes some countries…
December 8, 2023
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Development of Emergency Generators that Resolve Value Chain Issues Remote Monitoring Services that Reassure Customers
Maintaining the supply of electric power during disasters is an important part of business continuity planning, with…
December 8, 2023
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Topic 1: Second Report on GHG Emission Reductions from Use of Ammonia Engines Computational Approach to Assessing Emissions of NH3-Diesel Dual-Fuel Engine
While ammonia is a promising substitute for fossil fuels, some disadvantages are its low burning speed and…
December 8, 2023
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4LV Series of Next-Generation Marine Engines: Outperforms Existing Models on Acceleration and Noise Level
Small diesel engines are a core product of Yanmar and marine engines form a part of this product range. These are particularly well known in Europe and America …
November 1, 2018
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Application of Phenomenological Models for Diesel Combustion under Various Operating Conditions
Yanmar has supplied power train systems to customers around the world based on a motto "Best energy with the minimum impact on the environment". The power source …
November 1, 2018
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Innovative Low-Cost, Labor-Saving Technology for Rice Transplanters Using Dense Seedling and Automatic Adjustment of Planting Depth
As Japan has been making a shift to greater scale in paddy-rice cultivation over recent years, the raising and transplanting of seedlings has emerged as an obstacle to …
April 13, 2018
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Design Method for Hydro-Mechanical Transmission for Vehicle: Prediction of Noise Based on 1D and 3D Simulation
Conventional tractors transmission technology mainly consists of "mechanical" or "hydraulic" types. Fig.1 shows appearance of newly developed HMT (Hydraulic Mechanical …
April 13, 2018
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Low-Noise Technology for Gear Design
As a component manufacturer within the Yanmar Group, Kanzaki Kokyukoki Mfg. Co., Ltd. develops, manufactures and sells hydraulic equipment and various transmissions. …
April 13, 2018
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New ViO20 Excavator: Designed for High-End Functionality
Designed with zero tail swing (such that the rear of the rotating upper structure never extends outside the width of the crawlers), a feature that ensures a high level of safety, …
October 1, 2019
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Prediction for SCR Systems Performance using 3D CFD Simulation: Aiming at SCR Development for Various Layouts
Diesel engines are widely used in industrial machinery because of their fuel efficiency and high levels of reliability and durability. However, emissions regulations for …
October 5, 2017
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Utilization of Waste Heat from Hot Water: Desiccant Technology
In keeping with its brand statement of “A Sustainable Future”, Yanmar is taking steps to tackle global warming that include the development of techniques for utilizing …
October 5, 2017
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High Accuracy Stress Prediction Technology for Cast Iron Material: Improvement of Elastoplastic Analysis Technology
Use of CAE in industry has grown rapidly over recent years, with strength analysis being one application of particular importance. One example of where strength …
October 5, 2017
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Development of Zero Emission Generating System "Stirling Engine"
Realizing the goal expressed in Yanmar's brand statement of "A SUSTANABLE FUTURE" requires not only reductions in CO2 emissions but also…
January 27, 2016
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Editor's Postscript
How are all of our readers getting along in the hot summer months, which appear to be characterized by a succession of major events and important news from…
July 27, 2016
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Introduction to Yanmar Kota Kinabalu R&D Center (YKRC)
Yanmar Kota Kinabalu R&D Center (YKRC) in Malaysia was established on Jan 2008, located in the State of Sabah, Borneo Island of Malaysia. Yanmar currently…
April 27, 2016
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Editor's Postscript
This year the lingering heat is severe in Japan, with 30-degree days continuing even into October. As we look forward to the arrival of Fall in earnest, I hope all of our readers…
October 27, 2016
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Toward World-Leading Electrical Generation Efficiency: Development of EP420G Gas Engine Cogeneration System
Gas engine cogeneration systems are a clean and energy-efficient means of burning city gas (made up mainly of natural gas) to generate electric power, with …
September 30, 2022
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Introduction of Dual-Fuel Engine Second Report: Efforts for a Decarbonized Society
The shipping industry has been studying alternative fuels and technologies able to replace petroleum-based fuels as part of its efforts toward …
September 30, 2022
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Development of New Diesel Engine 4TN107 for Off-Road Machinery: Achievement of Class-Leading Fuel Efficiency and High Power Density
Yanmar has developed the new 4TN107 series of 4.6 L diesel engines with power outputs up to 155 kW. The new engines provide customers of medium and …
September 30, 2022
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YR8D, A Auto-Rice Transplanter: Greater Labor Savings when Used with High-Density Seedlings
As the shortage of agricultural workers worsens, there is a need for machinery that can work at the same level as a skilled operator regardless of who is operating it. …
October 1, 2019
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Editor's Postscript
The new fiscal year has commenced, with comfortable spring weather that is invigorating for both nature and our spirits. I keep hearing reports about blossoming …
April 13, 2018
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First YANMAR Gasification system in Europe
From 2005 to 2012 renewable electricity generation in Europe grew by 61% (average pace of 7.1%/year), whereas the overall…
April 10, 2015
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Vibration Transfer Path Analysis for Combine Harvester Using Multibody Dynamics for Engine Hybrid Method Combining CAE and Experiment
Diesel engines are the main power source used in agricultural and construction machinery and also a source of vibration. Engine…
April 10, 2015
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Establishment of Heat Treatment Analysis Technique ~Improvement in Analysis Accuracy of Phase Transformation During Induction Hardening~
As internal combustion engines have been made lighter in recent years with higher outputs, there is a trend toward higher loads being…
April 10, 2015
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Introduction to Machine Tools Used in Gear Processing ～Development of Machine Tools for High Precision Gears at Low Cost～
Part of the Yanmar Group, Kanzaki Kokyukoki Mfg. Co., Ltd. operates a component manufacturing business that produces hydraulic equipment and transmissions, and marine an…
January 27, 2016
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Introduction of Minimal Swing Radius Excavator "B7-6" that has Evolved Comfort and Equips SIGMA Boom.
The minimal-swing-radius hydraulic excavator (MSRX), sold mainly in the Japanese market, is characterized by having an implement with a boom that can be offset to either side.…
January 27, 2016
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Technology ｘ Design：GHP K1series Development(XAIRⅡ)
With Japan having suffered from electricity shortages since the Great East Japan Earthquake, the GHP XAIR has achieved good sales since its product launch in April…
January 27, 2016
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Introduction of Yanmar New Wheel Loader "V3-7" "V4-7" "V5-7"
Articulated wheel loaders are wheeled construction machineries used for excavation and loading with a large bucket. The body structure is articulated ("Frames…
April 27, 2016
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The Introduction of the Mini Tiller "YK-MR" Series "More simply, More easily"
This is the 26th year since Yanmar commercialized its mini tiller. During this time, our models have evolved to be equipped as standard with a mechanism that…
April 27, 2016
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Construction of New Service System Infrastructure by SMARTASSIST
The history of the remote information systems of Yanmar started 28 years ago in 1987 with the operation of the Remote Energy Support System (RESS), which targeted diesel…
October 27, 2015
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Bio Innovation Center Kurashiki Laboratory
Yanmar established the Bio Innovation Center Kurashiki Laboratory ("Kurashiki Laboratory" hereafter) in August 2016 as a center for research and development …
April 3, 2019
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Editor's Postscript
With the arrival of spring, I am pleased to be publishing our first issue of the new business year. Here at the editorial team, we intend to bring a fresh feel …
April 3, 2019
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YANMAR AGRICULTURAL EQUIPMENT (CHINA) CO., LTD. Profile
Yanmar Agricultural Equipment (China) Co., Ltd. (YNC), formally Jiangsu Yanmar Co., has established in 1998 in Wuxi City, Jiangsu Province, and will celebrate its …
April 13, 2018
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Editor's Postscript
Thank you for your continued readership. The seasons continue to come and go and we find ourselves deep into autumn. Talk of autumn conjures up thoughts of a time …
November 1, 2018
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YANMAR CONSTRUCTION EQUIPMENT EUROPE S.A.S.
Yanmar Construction Equipment Europe (YCEE) is a mini excavators factory based at Saint-Dizier, in France. In 1989, Yanmar and a Swiss company, Amman which is …
November 1, 2018
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The New TNV Engine Series : World’s First Engine Complies with Swiss PN Regulations
Because diesel engines have low fuel consumption and excellent durability and reliability, they are widely used as a power source for industrial machinery. On the other…
October 27, 2015
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Business of Yanmar S.P.
Yanmar S.P. Co. Ltd (hereinafter referred to as “YSP”) will next year celebrate its 40th anniversary, having commenced the operations as part of the former …
October 5, 2017
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Reliability Case Study of an Integrated Hydrostatic Transaxle
Tuff Torq has produced over one million units per year for the past five years, with the majority of those being integrated hydrostatic transaxles (IHT) like the K46 shown in Figure …
October 1, 2019
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Yanmar Combine Harvester Steering System Fulltime Drive System (FDS)
In 2006, Yanmar won the Osaka Outstanding Invention Award for its forced differential transmission steering system for combine…
April 10, 2015
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Novel Thermal Management in an Engine Room using Non-Parametric Sensitivity Analysis
Industrial vehicles are characterized by operating at a higher engine load and generating more heat than passenger cars. And also they travel more slowly and their…
July 27, 2015
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Dual-Fuel Marine Engine (Highly Reliable Environmentally Friendly Engine)
To prevent air pollution from ships, regulations covering pollutants such as nitrogen oxides (NOx) and sulfur oxides (SOx) specified under the 1997 International…
July 27, 2015
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Study of Electric-Field-Assisted Spark Ignition
The advantages of lean burn in terms of lower heat losses and higher specific heat ratio make it an effective way to improve the thermal efficiency of spark ignition engines.…
October 27, 2015
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Development of Engine Technologies for Carbon-Neutral Fuels
Fossil fuels have transformed the fabric of society in many ways. With their high energy densities*1 and ability to deliver a large…
December 8, 2023
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Editor's Postscript
Of the four seasons, spring and autumn are the ones which are most comfortable, and they are my favorite time of year. In recent years however, I feel that these seasons have …
October 1, 2019
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Editor's Postscript
With just one week of March remaining, we would like to express our deepest appreciation to you for taking the time to read this journal during the busy end-of-year …
March 26, 2020
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IHT the Top-share Transaxle for Lawn Tractors
The integrated hydrostatic transaxle (IHT), which consists of a hydrostatic transmission (HST) and gear drive train in one housing, was first in the world developed…
July 27, 2016
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New 4JH Marine Engine: An Electronically Controlled Diesel Engine that Sets A New Standard for the Sail Boat Market
Yanmar's small diesel engines are well known for their use as propulsion in sail boats and other pleasure boats as well as in…
July 27, 2016
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Development of High Efficiency BP-G 300kW-Class Biogas Co-Generation System
While use of gas engine co-generation systems has grown for reasons of effective energy utilization, CO2 emissions reduction, and better economic performance…
July 27, 2016
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EX38A Fishing and Pleasure Boat -Designed for Superior Comfort-
The Yanmar EX38A was developed based on the product concept of building a "Deep Fishing Cruiser" to experience the full wonders of fishing in its various different forms,…
October 27, 2016
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Technologies Used in Emission Regulation Compliant Stoichiometric Combustion Gas Engines for Micro Co-Generation
Micro co-generation systems achieve a high level of overall efficiency by using exhaust heat to recover the energy from fuel in the form of heat (hot water) as…
October 27, 2016
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Product Technologies Used in New YT4/5 Series of Tractors which Adopted the Premium Design
The large sizes tractors were made full model changes as YT4/5 series in the spring of 2015 correspondingly to the timing of new exhaust emissions regulations in Japan and overseas.…
October 27, 2016
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The Technical Supports to Design the Cabin Noise more Comfortable
The expected requirements for living environments of buildings such as hotels and hospitals is very high level these days and measures for preventing vibration and noise…
January 27, 2016
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Publication of “YANMAR GREEN CHALLENGE 2050” Edition of YANMAR Technical Review
At Yanmar, we have long conducted business in a way that prioritizes the natural environment since our founding in 1912, as expressed in our mission statement, which …
September 30, 2022
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Editor's Postscript
昨年に続き、2023年号を皆様にお届けできたことを、編集委員一同、大変嬉しく思っております。ヤンマーテクニカルレビューは、エンジニアの…
December 8, 2023
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Improvement for Working Space Comfort (Prediction of Tractor Vibration)
Yanmar is continually working on ways to improve tractor working space comfort by reducing vibration and noise. In particular, given the tendency for faster speeds when…
January 27, 2016
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Hydraulic Front Wheel Drive (HFWD) That Reduces Damage for a Lawn
Vehicles with two-wheel drive do not damage the lawn so badly unless sudden acceleration or braking is activated. On the other hand vehicles with four-wheel drive…
July 27, 2015
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Editor's Postscript
On the occasion of YANMAR Technical Review's third year of publication, I would like to thank all of you for your zealous reading. My job as editor preparing articles …
October 5, 2017
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TRIBOLOGY for Product Reliability and Safety (Application of TRIBOLOGY Technology to Improve Reliability of Air Conditioner Compressor)
An OECD glossary defines tribology as “the science and technology of interacting surfaces in relative motion and of related subjects and practices”. In other…
April 27, 2016
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Development of Oil Cooling Type Nitriding Nozzle for Large Diesel Engines
In recent years, in addition to compliance with exhaust gas regulations, improved fuel economy, increased LCV (Life Cycle Value) and higher output have also been…
April 27, 2016
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Research and Development of Marine Engine that Operates with Biofuel – Evaluation of Refined Breached Deodorized Palm Oil (RBDPO) –
Considered to be carbon-neutral, biofuels based on vegetable oil reduce CO2 emissions when blended with fossil fuels in accordance with the amount of…
April 27, 2016
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Use of Model-Based Techniques for Marine Engine Development
The engine speed, load, and other operating conditions for marine engines vary widely depending on the use and specifications of the vessels in which they are installed…
July 27, 2016
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Two-stage Turbocharging for Four-Stroke Medium-Speed Diesel Engines
Marine diesel engines have long been subject to a variety of requirements that include better fuel economy, higher output, ability to use heavy fuel oil, and…
July 27, 2016
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Prediction and Evaluation of Leveling Performance for Rotary Tillers
A wide variety of factors contribute to the performance of rotary tillers, including harrowing, soil turning, leveling, ability to plow in paddy straw, and power requirements.…
October 27, 2016
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Development of the Intelligent Combine Harvester which Contributes to Increase in Productivity of Agriculture
Agriculture in Japan has been undergoing major changes in recent years associated with trends such as an aging workforce and a shrinking consumer population. Of the…
October 27, 2015
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Development of Class-leading High-Efficiency Gas Engine Co-Generation System
Increasing use is being made of gas engine co-generation systems fuelled with natural gas because of their energy efficiency, low CO2 emissions, and superior…
July 27, 2015
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High Reliability and Environmentally-friendly Mechanical Controlled Commercial Marine Diesel Engine 6CXB-GT
Because the time taken to travel to and from the fishery can have a significant impact on fish catches and price, the development and commercialization of marine…
July 27, 2015
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The Introduction of the Pleasure Fishing Boat “EX30B”～The Development of the Cruising Boat that Satisfies Suitability for Fishing and Interior Comfort at a High Level.～
Although the EX30B is the smallest model in the Wide EX Series, Yanmar did not think "It's the smallest model so there's nothing special…
October 27, 2015
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ViO45/55-6 Product Technology Overview
In 1993, Yanmar led the world by introducing the ViO series of excavators with zero tail swing. The series subsequently underwent…
April 10, 2015
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Publications, Awards and Honors
Q.Piao, T.Kakisaka, M.Konoto et al., Cooperative Control of Multi-Input Modular DC/DC Converter for Electric Off-Highway Vehicles, IEEJ Transactions on Industry Applications, 2021…
September 30, 2022
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Editor's Postscript
On behalf of everyone involved in the publication of this journal, we would like to express our sincere thanks to all of our readers. This latest issue is our first in …
September 30, 2022
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Manufacturing Technology Group
Yanmar is involved in a diverse range of businesses that encompass agriculture, pleasure boats, large marine engines, energy, construction machinery, and industrial …
March 26, 2020
Relevant Business
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Development of Engine Technologies for Carbon-Neutral Fuels
Fossil fuels have transformed the fabric of society in many ways. With their high energy densities*1 and ability to deliver a large…
December 8, 2023
-
Topic 1: Second Report on GHG Emission Reductions from Use of Ammonia Engines Computational Approach to Assessing Emissions of NH3-Diesel Dual-Fuel Engine
While ammonia is a promising substitute for fossil fuels, some disadvantages are its low burning speed and…
December 8, 2023
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Topic 2: A Study on Combustion Improvement in Dual-fuel Engine for Biogas Applications
As the biogas produced by methane fermentation contains a high fraction of carbon dioxide, it is necessary to understand…
December 8, 2023
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Topic 3: Development of TNG Series Spark-Ignition Engines for Industry Development of Technology for Multi-Fuel Operation in Anticipation of Decarbonization
Given the need to reduce greenhouse gases around the world, continued growth is expected in the use of alternative fuels…
December 8, 2023
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Motor Thermal Analysis for Electrification of Machinery Thermal Analysis of Electric Motors Using Finite Element Method and Thermal Equivalent Circuit
Recently, the demand for environmental performance has been increasing in the automobile industries and other industries. Therefore…
December 8, 2023
-
Solutions for Reliable Oyster Farming Production Use of Biotech Practices
Japan’s oyster farming industry has been suffering from poor harvests of wild seed and high levels of mortality due to…
December 8, 2023
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Development of Agricultural Spraying Method with Reduced Spray Use and Improved Leaf Coverage Innovative New Technique for Tractor-Mounted Sprayers
In pesticide spraying, the extent of spray drift to areas other than target crops is proportional to the amount sprayed. Along with…
December 8, 2023
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Achievement of Ultra-Low Noise on New ViO80-7 Hydraulic Backhoe
Hydraulic backhoes operate by using pressurized hydraulic fluid (oil) to transmit high levels of energy. The engine…
December 8, 2023
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YH700M Full-Feeding Combine Harvester Development of Combine Harvester for Low-Cost and Efficient Harvesting of Crops Other than Rice
Improving food self-sufficiency is more important than ever for Japan given the current global situation, which includes some countries…
December 8, 2023
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Development of Emergency Generators that Resolve Value Chain Issues Remote Monitoring Services that Reassure Customers
Maintaining the supply of electric power during disasters is an important part of business continuity planning, with…
December 8, 2023
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YC100 Composter for Resource Recycling Food Production
Yanmar’s YC100 composter was developed to facilitate recycling in food production. Its features include stirring claws…
December 8, 2023
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Editor's Postscript
昨年に続き、2023年号を皆様にお届けできたことを、編集委員一同、大変嬉しく思っております。ヤンマーテクニカルレビューは、エンジニアの…
December 8, 2023
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Publication of “YANMAR GREEN CHALLENGE 2050” Edition of YANMAR Technical Review
At Yanmar, we have long conducted business in a way that prioritizes the natural environment since our founding in 1912, as expressed in our mission statement, which …
September 30, 2022
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Development of Maritime Hydrogen Fuel Cell System
Amid a rapid upsurge in global efforts to reduce GHG emissions, hydrogen is increasingly being recognized for its potential as a clean energy source able to …
September 30, 2022
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Offering of Total Energy Services: Feature introduction of Y-EMS
Efforts to reduce energy consumption are critical for achieving ‘Carbon Neutrality’. Along with gas heat pumps and cogeneration systems, the …
September 30, 2022
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Development of Efficient VETUS Modular E-DRIVE Systems: Full Electric Propulsion System and Energy Management Technology for Boats
As the need to reduce greenhouse gas emissions becomes a priority, many governments have flagged electric transport as a part of the solution. Cars, scooters …
September 30, 2022
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Power Generation Technology Using Waste Heat: Stirling Engine
In order to enable the reduction of CO2 emission, Yanmar has been developing power generation systems that uses exhaust heat generated from various …
September 30, 2022
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Effects of Reducing GHG Emissions: Calculation and Experimental Study of Fundamental Characteristics of Ammonia-Diesel Dual-Fuel Engines
While NH3 is a promising substitute for fossil fuels, its low burning speed and low ignitability are major challenges. One way to address this in internal combustion engines is …
September 30, 2022
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Energy Conversion from Waste Heat to CO2-Free Electric Power: Development of kW-Class Thermoelectric Power Generator with Loop Thermosiphon Heat Exchanger
In order to enable the reduction of CO2 emission, Yanmar has been studying the power generation that uses exhaust heat generated from various …
September 30, 2022
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Introduction of Dual-Fuel Engine Second Report: Efforts for a Decarbonized Society
The shipping industry has been studying alternative fuels and technologies able to replace petroleum-based fuels as part of its efforts toward …
September 30, 2022
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Development of New Diesel Engine 4TN107 for Off-Road Machinery: Achievement of Class-Leading Fuel Efficiency and High Power Density
Yanmar has developed the new 4TN107 series of 4.6 L diesel engines with power outputs up to 155 kW. The new engines provide customers of medium and …
September 30, 2022
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Toward World-Leading Electrical Generation Efficiency: Development of EP420G Gas Engine Cogeneration System
Gas engine cogeneration systems are a clean and energy-efficient means of burning city gas (made up mainly of natural gas) to generate electric power, with …
September 30, 2022
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Development of High-Efficiency GHP: Toward an Energy-Saving Lifestyle for Our Customers and a Society Where They Can Work and Live with Peace of Mind
Improving energy conversion efficiency is an important issue if society is to become more environmentally friendly. Yanmar Energy System Co., Ltd. has …
September 30, 2022
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YANMAR’s Controlled Fertilization: You Can Implement a Fertilization Planning!
More uniform crop growth is a key to achieving higher yield and quality. While past practice has been for the rice transplanter operator to adjust fertilizer application …
September 30, 2022
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Electronic Control Technology for Easier Vessel Operation: VC20 Electronic Vessel Control System
Launched in 2011, the VC10 was the first electronic vessel control system to be developed by Yanmar. The system has since been used to control various different types of …
September 30, 2022
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Publications, Awards and Honors
Q.Piao, T.Kakisaka, M.Konoto et al., Cooperative Control of Multi-Input Modular DC/DC Converter for Electric Off-Highway Vehicles, IEEJ Transactions on Industry Applications, 2021…
September 30, 2022
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Editor's Postscript
On behalf of everyone involved in the publication of this journal, we would like to express our sincere thanks to all of our readers. This latest issue is our first in …
September 30, 2022
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Development of Yield Sensor for Full-feeding Combine Harvesters: Enhancing Yield Visualization
Considerable progress is being made across a variety of fields on the development of smart technologies based on information and communication technology (ICT) and the …
March 26, 2020
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Manufacturing Technology Group
Yanmar is involved in a diverse range of businesses that encompass agriculture, pleasure boats, large marine engines, energy, construction machinery, and industrial …
March 26, 2020
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EX34A Recreational Fishing Boat: Next-Generation Fishing Cruiser
The EX33 went on sale in 2009, featuring a largest-in-class cabin in order to satisfy market demands that emphasized comfort as well as suitability for fishing. The model …
March 26, 2020
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Two-stage Turbocharging for Four-Stroke Medium-Speed Diesel Engines 2nd Report
At a time of rising concern about making the transition to a world of low greenhouse gas emissions, Yanmar is working relentlessly to reduce engine fuel consumption …
March 26, 2020
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Path Tracking Controller for Agricultural Vehicle
With rises in global population comes the problem of food shortages. For instance, in Japan the number of farmers is decreasing, while their average age is rapidly …
March 26, 2020
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Marine Gears: Technology for Enhancing Vessel Comfort
Yanmar powerboats are equipped with highly reliable diesel engines that combine high output with fuel efficiency, with notable models including fishing boats that …
March 26, 2020
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Editor's Postscript
With just one week of March remaining, we would like to express our deepest appreciation to you for taking the time to read this journal during the busy end-of-year …
March 26, 2020
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YR8D, A Auto-Rice Transplanter: Greater Labor Savings when Used with High-Density Seedlings
As the shortage of agricultural workers worsens, there is a need for machinery that can work at the same level as a skilled operator regardless of who is operating it. …
October 1, 2019
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New ViO20 Excavator: Designed for High-End Functionality
Designed with zero tail swing (such that the rear of the rotating upper structure never extends outside the width of the crawlers), a feature that ensures a high level of safety, …
October 1, 2019
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Reliability Case Study of an Integrated Hydrostatic Transaxle
Tuff Torq has produced over one million units per year for the past five years, with the majority of those being integrated hydrostatic transaxles (IHT) like the K46 shown in Figure …
October 1, 2019
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Development of Large Capacity, High Efficiency GHP Chiller: World's Largest Capacity GHP Chiller
Gas heat pump (GHP) air conditioners help reduce electricity usage by running instead on clean natural gas. The GHP chiller described in this report takes advantage of the features …
October 1, 2019
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3TNV80FT Industrial Engine: Achieving World-Leading Torque Performance for a 1L Diesel Engine
Yanmar’s sub-19 kW small diesel engines have earned a good reputation in the market for using mechanical fuel injection to comply with the latest emission regulations, including …
October 1, 2019
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A Study of Gas-Diesel Dual Fuel Combustion for Higher Thermal Efficiency and Lower Emissions
Since diesel engines deliver high economical performance, they are widely used to power automobiles and various types of industrial machinery. However, they are facing stringent …
October 1, 2019
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Automated Testing of Agricultural Machinery Control Software without Machinery: Hardware-in-the-Loop Simulator
Yanmar has been working to improve the functionality and performance of agricultural machinery with the aim of achieving sustainable agriculture. Electronic control plays a big …
October 1, 2019
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Editor's Postscript
Of the four seasons, spring and autumn are the ones which are most comfortable, and they are my favorite time of year. In recent years however, I feel that these seasons have …
October 1, 2019
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Self-Driving Robot Tractor: Yanmar Technology for Sustainable Agriculture
Agriculture is facing a difficult environment with a population of farmers that is both ageing and shrinking, a trend that will only accelerate further …
April 3, 2019
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Bio Innovation Center Kurashiki Laboratory
Yanmar established the Bio Innovation Center Kurashiki Laboratory ("Kurashiki Laboratory" hereafter) in August 2016 as a center for research and development …
April 3, 2019
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Automatic Navigation Boat Technology: Development of the Robotics Boat
The safe operation of small crafts is a matter of importance, with accidents that occur during vessel operation making up 75% of all marine accidents. …
April 3, 2019
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Development of 6EY26DF Dual-Fuel Engine: Compliant with IMO Tier 3
With increasing restrictions having been placed on emissions of atmospheric pollutants over recent years, there is a need for further reductions in the …
April 3, 2019
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Application of Low-Viscosity Oil to Diesel Engine Valve Train
With reducing emissions of greenhouse gases posing a challenge for industry as a whole, there is rising demand for energy efficiency in industrial machinery, …
April 3, 2019
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Technologies Used in HMT Unit for Corn Harvesters for the Chinese Market: A Behind-the-Scenes Mechanism with an Important Role in End Product Performance
Along with reforms to the sector’s economic systems, agriculture in China has entered a phase in which mechanization predominates. Use of machinery is growing …
April 3, 2019
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Editor's Postscript
With the arrival of spring, I am pleased to be publishing our first issue of the new business year. Here at the editorial team, we intend to bring a fresh feel …
April 3, 2019
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HL10,U Leek Harvester: More Efficient and Easier to Use
Leek harvesters are used to harvest long onions, these machines reduce labor requirements and shorten harvesting times by combining the four harvesting …
November 1, 2018
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Product Technology Overview for New SV60 Excavator: Designed for Business Class Levels of Comfort
The most common type of hydraulic excavator in Yanmar's range is the ViO series of "true zero tail swing" models in which the rear of the superstructure …
November 1, 2018
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YANMAR CONSTRUCTION EQUIPMENT EUROPE S.A.S.
Yanmar Construction Equipment Europe (YCEE) is a mini excavators factory based at Saint-Dizier, in France. In 1989, Yanmar and a Swiss company, Amman which is …
November 1, 2018
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Development of Yanmar Energy Management System (Y-EMS)
Yanmar Energy System Co., Ltd. has progressively improved the performance of the energy systems, specifically gas engine combined heat and power systems …
November 1, 2018
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4LV Series of Next-Generation Marine Engines: Outperforms Existing Models on Acceleration and Noise Level
Small diesel engines are a core product of Yanmar and marine engines form a part of this product range. These are particularly well known in Europe and America …
November 1, 2018
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Application of Phenomenological Models for Diesel Combustion under Various Operating Conditions
Yanmar has supplied power train systems to customers around the world based on a motto "Best energy with the minimum impact on the environment". The power source …
November 1, 2018
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Editor's Postscript
Thank you for your continued readership. The seasons continue to come and go and we find ourselves deep into autumn. Talk of autumn conjures up thoughts of a time …
November 1, 2018
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Technology for Improving Comfort in Small Pleasure Boat: Wakuwaku-Boat Technology
Among the requirements for pleasure boats are that they provide the comfort to enhance the excitement of travelling across the open sea, and the delight …
April 13, 2018
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Marine SCR System for Compliance with IMO NOx Tier 3 Regulations
The Tier 3 NOx emissions regulations (IMO3) of the International Maritime Organization (IMO) that came into force on January 1, 2016 stipulate an 80% reduction …
April 13, 2018
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YANMAR AGRICULTURAL EQUIPMENT (CHINA) CO., LTD. Profile
Yanmar Agricultural Equipment (China) Co., Ltd. (YNC), formally Jiangsu Yanmar Co., has established in 1998 in Wuxi City, Jiangsu Province, and will celebrate its …
April 13, 2018
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Innovative Low-Cost, Labor-Saving Technology for Rice Transplanters Using Dense Seedling and Automatic Adjustment of Planting Depth
As Japan has been making a shift to greater scale in paddy-rice cultivation over recent years, the raising and transplanting of seedlings has emerged as an obstacle to …
April 13, 2018
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Design Method for Hydro-Mechanical Transmission for Vehicle: Prediction of Noise Based on 1D and 3D Simulation
Conventional tractors transmission technology mainly consists of "mechanical" or "hydraulic" types. Fig.1 shows appearance of newly developed HMT (Hydraulic Mechanical …
April 13, 2018
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Low-Noise Technology for Gear Design
As a component manufacturer within the Yanmar Group, Kanzaki Kokyukoki Mfg. Co., Ltd. develops, manufactures and sells hydraulic equipment and various transmissions. …
April 13, 2018
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Editor's Postscript
The new fiscal year has commenced, with comfortable spring weather that is invigorating for both nature and our spirits. I keep hearing reports about blossoming …
April 13, 2018
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Development of All-In-One Hybrid Air-Conditioning System: New Air Conditioning System Concept to Take Advantage of Liberalization of Electricity and Gas Markets
As a consequence of the constrained balance of supply and demand for electric power since the Great East Japan Earthquake, there has been steady growth …
October 5, 2017
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Technologies used in New C30R-3 Crawler Carrier: Ease-of-Operation and Capacity for Work Enhanced by Adoption of 2P2M System
A crawler carrier is a type of construction machine with crawler tracks and equipped with a dump vessel for carrying loads. This type of machine is categorized …
October 5, 2017
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Business of Yanmar S.P.
Yanmar S.P. Co. Ltd (hereinafter referred to as “YSP”) will next year celebrate its 40th anniversary, having commenced the operations as part of the former …
October 5, 2017
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Prediction for SCR Systems Performance using 3D CFD Simulation: Aiming at SCR Development for Various Layouts
Diesel engines are widely used in industrial machinery because of their fuel efficiency and high levels of reliability and durability. However, emissions regulations for …
October 5, 2017
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Utilization of Waste Heat from Hot Water: Desiccant Technology
In keeping with its brand statement of “A Sustainable Future”, Yanmar is taking steps to tackle global warming that include the development of techniques for utilizing …
October 5, 2017
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High Accuracy Stress Prediction Technology for Cast Iron Material: Improvement of Elastoplastic Analysis Technology
Use of CAE in industry has grown rapidly over recent years, with strength analysis being one application of particular importance. One example of where strength …
October 5, 2017
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Editor's Postscript
On the occasion of YANMAR Technical Review's third year of publication, I would like to thank all of you for your zealous reading. My job as editor preparing articles …
October 5, 2017
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Development of Zero Emission Generating System "Stirling Engine"
Realizing the goal expressed in Yanmar's brand statement of "A SUSTANABLE FUTURE" requires not only reductions in CO2 emissions but also…
January 27, 2016
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Technologies Used in New ViO80 Hydraulic Excavator～New ViPPS2i Hydraulic Drive System Combines Environmental and Operational Performance ～
Among the hydraulic excavator lineup from Yanmar Construction Equipment, the ViO series has been accepted in the market and led the industry with the…
January 27, 2016
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6/8EY33 Series of High-Power and Fuel-Efficient Diesel Engines～Raising Life Cycle Value for the Customer～
Yanmar has developed its EY series of large marine diesel engines that feature low fuel consumption and excellent durability based on the concepts of…
January 27, 2016
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Kanzaki Brand HSTs～High-Capacity HSTs～
HST is an abbreviation for Hydro-Static Transmission. HSTs are closed-circuit power transmission mechanisms made up of a hydraulic axial piston pump and…
January 27, 2016
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New 35kW Gas Micro Cogeneration System with Easier Indoor Installation and Higher Energy Efficiency
Gas engine cogeneration systems use a gas engine to generate electric power and save energy by utilizing the waste heat from the gas engine for heating and…
January 27, 2016
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Yanmar Technical Symposium 2016 (Ytec 2016)
The Yanmar Technical Symposium 2016 (Ytec 2016) was held in Fukuoka City over two days on October 20 and 21.This symposium has started in 2014 and is now in its third year.…
January 27, 2016
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Editor's Postscript
It feels like only the other day that we welcomed in the New Year and yet January is already at an end. Time just keep flying by.Yanmar has been holding its "Ytec"…
January 27, 2016
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Research & Development Center Celebrates the 60th Anniversary
With the aim of developing technology and products with a long-term outlook and expanding its buisiness, the research section of the engineering department at…
October 27, 2016
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Introduction to Yanmar America (YA)
For more than one hundred years, Yanmar has been developing the world's leading engine technologies and products to enrich people's lives and create a more sustainable future.…
October 27, 2016
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Product Technologies Used in New YT4/5 Series of Tractors which Adopted the Premium Design
The large sizes tractors were made full model changes as YT4/5 series in the spring of 2015 correspondingly to the timing of new exhaust emissions regulations in Japan and overseas.…
October 27, 2016
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Technologies Used in Emission Regulation Compliant Stoichiometric Combustion Gas Engines for Micro Co-Generation
Micro co-generation systems achieve a high level of overall efficiency by using exhaust heat to recover the energy from fuel in the form of heat (hot water) as…
October 27, 2016
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EX38A Fishing and Pleasure Boat -Designed for Superior Comfort-
The Yanmar EX38A was developed based on the product concept of building a "Deep Fishing Cruiser" to experience the full wonders of fishing in its various different forms,…
October 27, 2016
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Prediction and Evaluation of Leveling Performance for Rotary Tillers
A wide variety of factors contribute to the performance of rotary tillers, including harrowing, soil turning, leveling, ability to plow in paddy straw, and power requirements.…
October 27, 2016
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Editor's Postscript
This year the lingering heat is severe in Japan, with 30-degree days continuing even into October. As we look forward to the arrival of Fall in earnest, I hope all of our readers…
October 27, 2016
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Development of High Efficiency BP-G 300kW-Class Biogas Co-Generation System
While use of gas engine co-generation systems has grown for reasons of effective energy utilization, CO2 emissions reduction, and better economic performance…
July 27, 2016
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New 4JH Marine Engine: An Electronically Controlled Diesel Engine that Sets A New Standard for the Sail Boat Market
Yanmar's small diesel engines are well known for their use as propulsion in sail boats and other pleasure boats as well as in…
July 27, 2016
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Two-stage Turbocharging for Four-Stroke Medium-Speed Diesel Engines
Marine diesel engines have long been subject to a variety of requirements that include better fuel economy, higher output, ability to use heavy fuel oil, and…
July 27, 2016
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IHT the Top-share Transaxle for Lawn Tractors
The integrated hydrostatic transaxle (IHT), which consists of a hydrostatic transmission (HST) and gear drive train in one housing, was first in the world developed…
July 27, 2016
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Use of Model-Based Techniques for Marine Engine Development
The engine speed, load, and other operating conditions for marine engines vary widely depending on the use and specifications of the vessels in which they are installed…
July 27, 2016
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Prior-Evaluation of Electrical Components to Improve Product Quality～Efforts in the Quality Analysis Center～
Final products produced and marketed by Yanmar, such as tractors, construction machinery, and generators, contain thousands of individual parts, with some…
July 27, 2016
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Editor's Postscript
How are all of our readers getting along in the hot summer months, which appear to be characterized by a succession of major events and important news from…
July 27, 2016
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Introduction to Yanmar Kota Kinabalu R&D Center (YKRC)
Yanmar Kota Kinabalu R&D Center (YKRC) in Malaysia was established on Jan 2008, located in the State of Sabah, Borneo Island of Malaysia. Yanmar currently…
April 27, 2016
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The Introduction of the Mini Tiller "YK-MR" Series "More simply, More easily"
This is the 26th year since Yanmar commercialized its mini tiller. During this time, our models have evolved to be equipped as standard with a mechanism that…
April 27, 2016
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Introduction of Yanmar New Wheel Loader "V3-7" "V4-7" "V5-7"
Articulated wheel loaders are wheeled construction machineries used for excavation and loading with a large bucket. The body structure is articulated ("Frames…
April 27, 2016
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Research and Development of Marine Engine that Operates with Biofuel – Evaluation of Refined Breached Deodorized Palm Oil (RBDPO) –
Considered to be carbon-neutral, biofuels based on vegetable oil reduce CO2 emissions when blended with fossil fuels in accordance with the amount of…
April 27, 2016
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Development of Oil Cooling Type Nitriding Nozzle for Large Diesel Engines
In recent years, in addition to compliance with exhaust gas regulations, improved fuel economy, increased LCV (Life Cycle Value) and higher output have also been…
April 27, 2016
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TRIBOLOGY for Product Reliability and Safety (Application of TRIBOLOGY Technology to Improve Reliability of Air Conditioner Compressor)
An OECD glossary defines tribology as “the science and technology of interacting surfaces in relative motion and of related subjects and practices”. In other…
April 27, 2016
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Editor's Postscript
Now that the new fiscal year has begun and one month is passing by quickly, the busy month of April is over, perhaps those of you who have moved on to new…
April 27, 2016
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Technology ｘ Design：GHP K1series Development(XAIRⅡ)
With Japan having suffered from electricity shortages since the Great East Japan Earthquake, the GHP XAIR has achieved good sales since its product launch in April…
January 27, 2016
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Introduction of Minimal Swing Radius Excavator "B7-6" that has Evolved Comfort and Equips SIGMA Boom.
The minimal-swing-radius hydraulic excavator (MSRX), sold mainly in the Japanese market, is characterized by having an implement with a boom that can be offset to either side.…
January 27, 2016
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The Technical Supports to Design the Cabin Noise more Comfortable
The expected requirements for living environments of buildings such as hotels and hospitals is very high level these days and measures for preventing vibration and noise…
January 27, 2016
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Introduction to Machine Tools Used in Gear Processing ～Development of Machine Tools for High Precision Gears at Low Cost～
Part of the Yanmar Group, Kanzaki Kokyukoki Mfg. Co., Ltd. operates a component manufacturing business that produces hydraulic equipment and transmissions, and marine an…
January 27, 2016
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Improvement for Working Space Comfort (Prediction of Tractor Vibration)
Yanmar is continually working on ways to improve tractor working space comfort by reducing vibration and noise. In particular, given the tendency for faster speeds when…
January 27, 2016
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Editor's Postscript
Happy New Year to all of our readers!I would like to thank everyone who has read YANMAR Technical Review over this past year and wish you all the best for the coming year.…
January 27, 2016
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The New TNV Engine Series : World’s First Engine Complies with Swiss PN Regulations
Because diesel engines have low fuel consumption and excellent durability and reliability, they are widely used as a power source for industrial machinery. On the other…
October 27, 2015
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Construction of New Service System Infrastructure by SMARTASSIST
The history of the remote information systems of Yanmar started 28 years ago in 1987 with the operation of the Remote Energy Support System (RESS), which targeted diesel…
October 27, 2015
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Development of the Intelligent Combine Harvester which Contributes to Increase in Productivity of Agriculture
Agriculture in Japan has been undergoing major changes in recent years associated with trends such as an aging workforce and a shrinking consumer population. Of the…
October 27, 2015
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The Introduction of the Pleasure Fishing Boat “EX30B”～The Development of the Cruising Boat that Satisfies Suitability for Fishing and Interior Comfort at a High Level.～
Although the EX30B is the smallest model in the Wide EX Series, Yanmar did not think "It's the smallest model so there's nothing special…
October 27, 2015
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Study of Electric-Field-Assisted Spark Ignition
The advantages of lean burn in terms of lower heat losses and higher specific heat ratio make it an effective way to improve the thermal efficiency of spark ignition engines.…
October 27, 2015
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Secure File Exchange System for Improving the Speed of Research and Development (cnct-partner)
The sharing of information via computer networks has become essential to business. To expedite research and development (R&D), Yanmar is also making greater use of external…
October 27, 2015
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Yanmar Technical Symposium 2015 (“Ytec”)
For two days from this past October 1st and 2nd , Yanmar held its Yanmar Technical Symposium 2015, “Ytec,” at the Kobe Portopia Hotel.…
October 27, 2015
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Editor's Postscript
The seasons change quickly, with the heat of summer now gone, and already deep into autumn, we are now publishing our third issue. This time, in addition to technical papers…
October 27, 2015
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Development of Class-leading High-Efficiency Gas Engine Co-Generation System
Increasing use is being made of gas engine co-generation systems fuelled with natural gas because of their energy efficiency, low CO2 emissions, and superior…
July 27, 2015
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High Reliability and Environmentally-friendly Mechanical Controlled Commercial Marine Diesel Engine 6CXB-GT
Because the time taken to travel to and from the fishery can have a significant impact on fish catches and price, the development and commercialization of marine…
July 27, 2015
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Dual-Fuel Marine Engine (Highly Reliable Environmentally Friendly Engine)
To prevent air pollution from ships, regulations covering pollutants such as nitrogen oxides (NOx) and sulfur oxides (SOx) specified under the 1997 International…
July 27, 2015
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Hydraulic Front Wheel Drive (HFWD) That Reduces Damage for a Lawn
Vehicles with two-wheel drive do not damage the lawn so badly unless sudden acceleration or braking is activated. On the other hand vehicles with four-wheel drive…
July 27, 2015
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Novel Thermal Management in an Engine Room using Non-Parametric Sensitivity Analysis
Industrial vehicles are characterized by operating at a higher engine load and generating more heat than passenger cars. And also they travel more slowly and their…
July 27, 2015
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Editor's Postscript
After the spring edition of YANMAR Technical Review was published, the editorial team was interested to find out just how many people were reading the articles.…
July 27, 2015
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On the Inaugural Publication of YANMAR Technical Review
Welcome to the inaugural edition of YANMAR Technical Review. On November 19, 2014 at our new headquarters, the Yanmar Flying…
April 10, 2015
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Yanmar Combine Harvester Steering System Fulltime Drive System (FDS)
In 2006, Yanmar won the Osaka Outstanding Invention Award for its forced differential transmission steering system for combine…
April 10, 2015
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Establishment of Heat Treatment Analysis Technique ~Improvement in Analysis Accuracy of Phase Transformation During Induction Hardening~
As internal combustion engines have been made lighter in recent years with higher outputs, there is a trend toward higher loads being…
April 10, 2015
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Vibration Transfer Path Analysis for Combine Harvester Using Multibody Dynamics for Engine Hybrid Method Combining CAE and Experiment
Diesel engines are the main power source used in agricultural and construction machinery and also a source of vibration. Engine…
April 10, 2015
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ViO45/55-6 Product Technology Overview
In 1993, Yanmar led the world by introducing the ViO series of excavators with zero tail swing. The series subsequently underwent…
April 10, 2015
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First YANMAR Gasification system in Europe
From 2005 to 2012 renewable electricity generation in Europe grew by 61% (average pace of 7.1%/year), whereas the overall…
April 10, 2015
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Editor's Postscript
Do you know what the Yanmar mission statement says? As no doubt many of you are unfamiliar with it, I have reprinted it here.…
April 10, 2015
