VANCOUVER, B.C. — Cummins Westport’s ISX G heavy-duty engine has been recognized by the California Air Resources Board (CARB) as the lowest-emission truck engine in the 400 h.p. range.
CARB has confirmed the engine meets Optional Low NOx emission standards of 1.5 grams per brake horsepower hour (g/bhp-hr). Meanwhile, other versions of the same engine have met a new benchmark of .6 g/bhp-hr in a government-funded laboratory test, the company says.
“These significant milestones reinforce our leadership in gaseous fuel engine technologies and demonstrate that natural gas can effectively deliver impressive environmental benefits without compromising performance” said Hugh Foden president of Cummins Westport. “Reducing emissions from class eight heavy- duty trucks has the potential to have a considerable effect in reducing North America’s transportation-related emissions.”
The company estimates its natural gas engines will have lower life cycle costs than diesel engines as the 2010 emissions standards arrive.
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