Meeting the latest emissions standards

Standards governing emissions from diesel engines have continued to tighten in the past decade, requiring manufacturers of diesel engines and Original Equipment Manufacturers (OEMs) to reduce the environmental impact of exhaust emissions. Perkins is continually investing in new technologies to help you meet emissions challenges now – and in the future.

Perkins products are constantly evolving as we invest in – and develop – new technologies that help our customers meet with the latest emission standards. So how have things changed across the EU and U.S. in the past decade – and how have we responded?

U.S. standards

Standards governing emissions from diesel engines in the U.S. have continued to tighten in the past decade. One of the most significant milestones was the introduction in January 2011 of the U.S. EPA Tier 4 Interim standard which required manufacturers of diesel engines and Original Equipment Manufacturers (OEMs) to reduce the environmental impact of exhaust emissions.

Specifically, the Tier 4 Interim standard applied to all diesel engines rated 130 kW (175 hp) and above manufactured on or after January 1, 2011. It required reductions in emissions of particulate matter and nitrogen oxides (NOx) as well as regulating hydrocarbon and carbon monoxide emissions.

Tier 4 Interim was followed in 2014 by more stringent standards – Tier 4 Final, under which engines rated 130-560 kW (175-750 hp) require an additional 80 percent reduction in NOx emissions from Tier 4 Interim levels. Particulate matter (PM) emissions remained at the same levels.

At Perkins we’re continually investing in new technologies to help you meet emissions challenges now and in the future. To do this we’re ensuring that our latest generation engines meet Tier 4 Final emissions standards.

EU standards

In 2011 the EU Stage IIIB standard became law and this is still in place for engines rated below 56 kW. Since January 2014 engines between 130-560 kW have been subject to the more demanding Stage IV standard, which was extended to cover engines rated 56-130 kW in October 2014.

The combined standards requires reductions in particulates and nitrogen oxides (NOx) as well as regulating hydrocarbon and carbon monoxide emissions.

At Perkins we’re continually investing in new technologies to ensure that our latest generation of engines meet Stage IV standards.

 


U.S. EPA emission standards timeline

This infographic clearly illustrates how the U.S. EPA emission standards have reduced particulates, hydrocarbons and NOx, across the power bands, up to 2015.

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EU emission standards timeline

This infographic illustrates how the EU emission standards have reduced particulates, hydrocarbons and NOx, across the power bands, up to 2014.

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