1 November 2011

New Holland’s Tier4 engine technology

New Holland’s Tier4 engine technology

New Holland is committed to integrating the best available engine technology to meet the stringent Tier 4A emissions regulations. High powered tractors and harvesting products above 100 hp are using ECOBlue™ Selective Catalytic Reduction (SCR) technology. Today, New Holland offers the largest range of Tier 4A compliant machines, comprising 16 combines and 20 tractors.

The New Holland ECOBlue™ SCR technology

The ECOBlue™ SCR technology used to meet the Tier 4A emissions standards was developed in partnership with FPT Industrial,  which pioneered low emissions systems and is bringing  the advantage of the extensive experience developed in on- and off-highway applications over the years. The 150,000 FPT Industrial SCR engines in operation around the world are testament to its ability to develop technologies that deliver emissions regulations compliance without compromising performance, productivity and cost efficiency.

Compared with other SCR systems, the FPT Industrial technology offers the highest NOx conversion efficiency rate on the market with over 95%. This is compatible with a substantial reduction of soot emissions as well as a structural containment of the fuel consumption.

A fundamental element of the SCR system is AdBlue/DEF, the solution which is injected in the after-treatment system to neutralise the harmful exhaust emissions produced during combustion. It turns them into water and nitrogen, both of which are naturally present in the environment. The AdBlue/DEF system has been designed for minimal operator input, and only needs to be filled every other diesel refill. It is also conveniently located next to the pre-existing diesel tank to ensure hassle-free filling. Operators are kept continually informed of AdBlue/DEF levels courtesy of in-cab displays. The SCR after treatment system does not interfere with engine performance, but actually improves it.

The introduction of the ECOBlue™ SCR technology  to the New Holland T7, T8, T9 tractor range as well as to the CX combine line up offers customers up to a 10% reduction in fuel consumption. Moreover, the cost of purchasing AdBlue/DEF is more than offset by these savings as for every euro spent on AdBlue, users will save five euro on fuel (depending on market prices). Furthermore, the maximum power is increased by 7% and torque by 13%.

With the ECOBlue™ SCR technology  New Holland once again affirms its "Clean Energy Leader" position.

Why SCR?

There is wide consensus in the engine industry that SCR is the technology of the future and the most suitable to comply with the Tier4 emissions regulations because it separates the Engine Power Generation function from the Emissions Reduction function:

  • The engine is used for its primary purpose only, which is to generate maximum power from a quantity of combustible. This is best achieved thanks to optimum combustion conditions, which are not compromised by the integration of re-circulated exhaust gas. More power and more torque are directly available for agricultural applications.


  • As there is no recirculation, there is no need to cool any exhaust gas to press them back in the combustion chamber. Therefore, supplementary radiators impacting the vehicle architecture and complexity are not required. The whole architecture of the product is unaffected; the bonnet keeps an excellent forward visibility and compactness while allowing optimum manoeuvrability or the integration of front linkage and PTO options for example.


  • Less engine stress also means more durability and longer service intervals which directly provides lower running costs to the farmers.
  • Since the engine is only used for power generation at its optimum, the SCR technology allows significant fuel consumption reduction compared to Tier 3 machinery.

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