The U.S. EPA Is Expected to Follow California Air Resources Board
As Natural Gas Again Provides the Cleanest Transportation Option,
Next-Generation Engines Are to Be Available for Vehicles in 2016
The California Air Resources Board has certified the 100% natural gas-fueled 8.9-liter ISL G engine by Cummins Westport for “near zero emission” of nitrogen oxides: just 0.02 grams per brake-horsepower – 90% cleaner than the existing NOx standard of 0.2 grams in effect since 2010.
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