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Cummins today announced that it has begun development of a 15-liter heavy-duty, spark- ignited natural gas engine to meet demand for on-highway applications. As natural gas production grows in North America and the fuel becomes more readily available, Cummins says it believes there is a strong market for engines powered by an alternative to diesel fuel.
Cummins says it has been investing significantly in the development of natural gas engines. In addition to its off-highway natural gas engines, the company is already producing on-highway spark-ignited natural gas engines for Cummins Westport, its joint venture with Westport Innovations in Vancouver, British Columbia. Engines offered by Cummins Westport range in size from 5.9 liters to the recently announced 12-liter ISX12 G, which will begin production in 2013.
The ISX15 G will be based on the ISX15 diesel engine and will build on Cummins technology leadership with spark-ignited, Stoichiometric cooled Exhaust Gas Recirculation (SEGR) technology. A maintenance-free Three-Way Catalyst will be the only required exhaust aftertreatment. The engine will run on compressed natural gas, liquefied natural gas or biomethane.
Cummins ISX15 G is expected to be in limited production by 2014.