Cummins-Westport Low-NOx Engine


Through an agreement with South Coast Air Quality Management District, Cummins Westport, Inc. was awarded funds from the California Energy Commission’s Alternative and Renewable Fuel and Vehicle Technology Program (ARFVTP) and Natural Gas Research & Development program to support the development and on-road demonstration of a near-zero nitrous oxide (NOx) natural gas engine for the medium- and heavy-duty truck market.

The engine is a critical technological advancement, offering an immediate commercially-available technology to help achieve the state’s sustainable freight, clean air, and climate goals. This was the first midrange engine in North America to receive emission certifications from both U.S. Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) that meet the 0.02 grams per brake horsepower hour optional Near Zero NOx Emissions standards for medium heavy-duty truck, urban bus, school bus, and refuse applications.

The engine has already exceeded the 2016 U.S. Department of Transportation/EPA standards for greenhouse gas emissions. It is on track to exceed proposed future standards. While the engine has been heavily modified to reduce its greenhouse gas emissions, the performance is comparable to its diesel -powered counterpart.

ARFVTP Award Amount
$2 million

Funding Category
Alternative Fuel and Advanced Technology Vehicles

Location
Diamond Bar, Orange County


Top Photo: The Cummins Low NOx engine is a green alternative for medium duty truck fleets looking to reduce their carbon footprint. Bottom Photo: The Cummins Low NOx engine is a green alternative for medium duty truck fleets looking to reduce their carbon footprint.Photos courtesy of California Energy Commission.