Cummins Westport is planning is planning a dedicated-natural gas, spark ignition version of the new ISX11.9 diesel engine from Cummins, which may be available in 2013, according to a Fleets & Fuels report. Cummins reported U.S. EPA and California certification of the diesel engine to 2010 limits on July 20, and said it will commence full production of the diesel engine in August.
“The ISX11.9 is designed for rigorous duty cycles, including those for work trucks such as dump and mixer trucks, and refuse applications,” Cummins said, noting technology draw from the 15-liter ISX15, which is offered as a natural gas-diesel engine by Westport Innovations. Cummins promises horsepower ratings of 310-450 and torque ranging from 1150-1650 lb-ft for the ISX11.9, depending on vehicle application.
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