Meets 2013 EPA Emissions and 2014 Fuel Efficiency Rules
It’s official: the 11.9-liter natural gas engine for heavy trucks by Cummins Westport has received its U.S. EPA certification, the manufacturer reports, “meeting both the EPA 2013 regulations and the new greenhouse gas and fuel-efficiency rules that will take effect in 2014.”
Limited production of the ISX12 G begins in April, with full production scheduled to start in August. Cummins Westport will initially release the 350-horsepower version to truckbuilders, to be followed by 380- and 400-horsepower variants (F&F, December 19).
“Our field tests have had good results, and we’re pleased to achieve this important certification milestone,” Cummins Westport president Jim Arthurs said in a release. “We’re truly looking forward to starting production of this engine next month.”
CNG or LNG
The ISX12 G natural gas engine is based on the Cummins ISX12 diesel engine platform and operates exclusively on natural gas (compressed natural gas or liquefied natural gas) utilizing Cummins Westport’s proprietary spark-ignited, stoichiometric combustion with cooled exhaust gas recirculation (SEGR) technology, first introduced with the Cummins Westport ISL G.
Cummins Westport is showing the ISX12 G at the Mid-America Trucking Show in Louisville this week. It’s also featured in trucks on display by Freightliner, Kenworth, Mack, Peterbilt, and Volvo.
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Source: Cummins Westport with Fleets & Fuels follow-up