Cummins Westport announces heavy duty ISX12 G Natural Gas Engine

Vancouver: Cummins Westport Inc.,has introduced an ISX12 G, a 12 litre heavy-duty, factory built dedicated natural gas engine for regional haul truck / tractor, vocational and refuse applications. The production is expected to commence in early 2013.The ISX12 G natural gas engine is based on the Cummins ISX12 diesel engine platform. The ISX12 G will operate exclusively on natural gas (CNG or LNG) utilizing Cummins Westport’s proprietary spark-ignited, stoichiometric combustion with cooled exhaust gas recirculation (SEGR) technology, first introduced with the 8.9 litre ISL G.

The ISX12 G features three-way catalyst aftertreatment, which is packaged as a muffler and is maintenance free. No diesel particulate filter or selective catalytic reduction aftertreatment will be required. Preliminary specifications include a range of ratings to 400 hp and 1,450 lb-ft torque, optional engine brake, and manual and automatic transmission capability to meet customer and original equipment manufacturer requirements. The ISX12 G will be manufactured in Cummins’ heavy-duty engine plant in Jamestown, New York.

“This is an important product development for Cummins Westport given the increasing demand for natural gas vehicles in the heavy-duty market,” said Roe East, President of Cummins Westport.

Anticipated end-use applications in the regional haul market segment include intermodal and distribution operation, pickup and delivery. Potential post-launch market opportunities include motor coach and specialty vocational applications.

The ISX12 G is expected to be certified at launch to meet the U.S. Environmental Protection Agency and California Air Resources Board emission standards of 0.20 g/bhp-hr NOx and 0.01 g/bhp-hr PM. The engine is additionally expected to be capable of meeting EURO VI and pending U.S. greenhouse gas and fuel economy regulations.