Cummins Westport Medium-Duty CNG Engines Gain Certification

A pair of Cummins Westport, Inc. natural gas engines have gained approval from the U.S. Environmental Protection Agency and California Air Resources Board for medium-duty vehicles, the engine maker announced.

by Staff

December 13, 2017

Cummins Westport Medium-Duty CNG Engines Gain Certification — *Photo of L9N engine courtesy of Cummins Westport.*

1 min to read

*Photo of L9N engine courtesy of Cummins Westport.*

The 2018 L9N and B6.7N engines meet California's Low NOx standards and the 2017 EPA greenhouse gas emissions requirements for the engines, which are used in medium-duty trucks, including refuse haulers, school buses, and transit shuttles.

The L9N has been certified to Californial's optional Low NOx standard of 0.02 g/bhp-hr, which is a 90% reduction from engines operating at the current EPA NOx limit of 0.2 g/bhp-hr. The L9N offers ratings from 250 hp to 320 hp and 1,000 lb.-ft. peak torque.

The B6.7N has been certified to California's optional Low NOx standard of 0.1 g/bhp-hr, which is a 50% reduction from current EPA levels. The engine is available with ratings from 200 hp to 240 hp and 560 lb.-ft. peak torque.

The company plans to introduce a third natural gas engine — the ISX12N — that's expected to meet the optional Low NOx emissions level of 0.02 g/bhp-hr. Production of the three engines will begin by April 1.

Topics:Cummins ISX Medium-Duty Engines EPA Certification Natural Gas Vehicles Cummins Westport Green Fleet

Originally posted on Work Truck Online

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