Alternate Fuels

A Natural Gas Engine has been certified to Near Zero Emissions standards this month.  The ISL-G developed by Cummins Westport Inc. is a mid-range engine (8.9L) that reduces NOx emissions by 90% from the EPA 2010 benchmark meeting the 0.02 g/bhp-hr standards for medium-duty truck, urban bus, school bus and refuse applications.  The engine also meets the 2017 EPA greenhouse gas emission requirements and has been meeting the 2010 EPA standard for particulate matter (0.01 g/bhp-hr) since 2001. Natural gas is becoming a cleaner alternative to gasoline and diesel fuel for medium and large trucks at price expected to remain low for a long time, given the vast reserves of shale gas. EPA and CARB do not consider well to wheels emissions in their certification process.

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