{"id":26562,"date":"2016-11-03T11:49:00","date_gmt":"2016-11-03T11:49:00","guid":{"rendered":"https:\/\/www.yanmar.com\/eu\/industrial\/?p=26562"},"modified":"2021-03-08T17:58:28","modified_gmt":"2021-03-08T17:58:28","slug":"hard-target","status":"publish","type":"post","link":"https:\/\/www.yanmar.com\/eu\/industrial\/hard-target\/","title":{"rendered":"Hard Target"},"content":{"rendered":"\n

Yanmar\u2019s Total New Value (Tnv) Engine Series Comes In 2-Cylinder, 3-Cylinder And 4-Cylinder Water Cooled Versions With A Four-Cycle, Inline Configuration \u2013 But That\u2019s Only Half The Story<\/p>\n\n\n\n

Emissions regulations that focused on mitigating NOx and particulate matter (PM) got underway in 2000. From then, they became increasingly stringent, with Tier 4 commencing in 2013, requiring a further 37% reduction in NOx and a 90% reduction in PM. Moreover, previous tiers were based on a determined number of revs and load; however, with Tier 4 it was based on the transient cycle. This means that an engine still has to meet the standards, regardless of the altitude, climate or region. <\/p>\n\n\n\n

For Yanmar\u2019s innovative three-step regeneration solution, a diesel particulate filter (DPF) was on the cards from the start. However, due to many problems occurring with DPFs, there were many things to take into consideration. Essentially, the DPF collects the soot, resulting in cleaner emissions, and periodically that soot needs to be burnt or disposed of. When the excess soot needs to be disposed of the engine must stop, resulting in a reduction in productivity. In the case of burning  the soot, fuel needs to be sent through the DPF, resulting in additional fuel usage. <\/p>\n\n\n\n

Yanmar\u2019s concept was to introduce an automatic step at roughly 350\u00b0C, the stage at which the soot would typically be incinerated with previous DPFs. Without the need for fuel injection, soot is periodically disposed of, and by utilizing \u2018reset regeneration\u2019 at 100-hour intervals, all soot is completely disposed of. On the remote chance that the filter gets clogged, in conjunction with fuel injection, regeneration can be performed manually. The success of Yanmar\u2019s Tier 4 engine led directly to the capability of Yanmar\u2019s mini-construction equipment being maintenance free with a product life of 6,000 hours. <\/p>\n\n\n\n

Further Enhancements<\/h2>\n\n\n\n

Development of this engine wasn\u2019t exactly smooth sailing, though. Initially, Yanmar used its own multi-point (MP) fuel injection system, until development hit a wall. Five years after development had begun in February 2009, the team made the decision to switch from MP to a common rail system. For the engine control unit (ECU) side of the project, Yanmar teamed up with an engineering company to collaborate on technology development. This decision put Yanmar back two years in the development stage, compared with its competitors. <\/p>\n\n\n\n

But while it may have incorporated technology from other companies in the engine\u2019s design, this on its own wasn\u2019t what led to Yanmar\u2019s success. It established a new facility for research that furthered its knowledge in this area. Additionally, in
relation to the manufacturing processes, right from the design phase, Yanmar was going to the sites where the engine would
be used, and making improvements on any problems that had unfolded. <\/p>\n\n\n\n

In the development stage, Masashi Sagara of the planning division visited customer work sites and monitored the progress made. Through collaboration with sales, they were performing real tests on site with the engines. Engines were installed in a wide range of machines, with more than 250 machines being monitored. Moreover, development, manufacturing and sales collaborated closely throughout the project. <\/p>\n\n\n\n

What We Like To Call A Yanmar Engine<\/h2>\n\n\n\n

This hard work led to Yanmar\u2019s solution being the world\u2019s first California Air Resources Board-certified Tier 4 engine.
The first of the engines was shipped out in 2012, and as we went to press, some 70,000 have been shipped \u2013 and not a
single DPF has gotten clogged up yet. Also, fuel consumption has been shown to beat one of its major competitors by an
impressive 7.5%. <\/p>\n\n\n\n

While Yanmar did have to give up on its own fuel-injection system, from the perspective of DPF controllability and fuel efficiency, it has succeeded once again in making a top-of-the-range product. Some 200 employees were involved in the project, and when you factor in all the people who were involved where the engines were tested, that figure adds up to about a thousand expert workers. \u201cNever before have I seen unity at that scale,\u201d says Ryo Yuki of Yanmar\u2019s testing division. \u201cUsing the Tier 4 as a stepping stone, hopefully we can all come together again and work on something big one more time.\u201d <\/p>\n\n\n\n

TIER 4 ENGINE AND PHILOSOPHY<\/h2>\n\n\n\n

With Yanmar\u2019s innovative three-step regeneration process, soot \u2013 the DPF\u2019s biggest problem \u2013 has been resolved. This was achieved through leveraging automation, which has now enabled the 6,000-hour lifespan of mini-construction equipment to be maintenance-free. Compared with the non-DPF-equipped engine of one of its major competitors, Yanmar\u2019s amounts to a 7.5% improvement in fuel efficiency. \u201cTo conserve fuel is to serve mankind,\u201d says the company. While Yanmar delivers innovative change in technology, its philosophy of conserving fuel will always remain the same. <\/p>\n\n\n\n

THE NEW TNV ENGINE SERIES<\/h2>\n\n\n\n

Yanmar\u2019s new TNV engine series was developed to satisfy customer demand while complying with strict emission regulations. Its advanced combustion technology using a common rail injection system and cooled exhaust gas recirculation (EGR), which is controlled by a unique correction method, are used to achieve better engine performance, with an exhaust aftertreatment system being adopted for cleaner emissions. A total engine management system using Yanmar\u2019s original software maintains optimal engine performance by itself, by adjusting the engine operating parameters automatically based on physical models. It also helps to achieve reliable DPF regeneration using a unique regeneration strategy without changing the feel of engine operation. It additionally has the advantage of enabling very flexible designs.<\/p>\n\n\n\n

The new TNV engine series comprises products developed to be even cleaner than before, without impairing the fuel consumption, high power, reliability and low noise performance that were characteristic of the previous models. Innovations have been introduced not only to hardware, but also to software, achieving high performance suitable for the engine operating conditions and environment. The selection of optimum devices and maintaining the same engine sizes as previous models provides flexibility for installation in a wide range of operating machines, and makes replacing previous model engines with the new one easy. The new TNV engines are offered with outputs from 6-56kW to meet a wide range of customer needs. <\/p>\n\n\n\n