Cummins Westport’s ISL G Near Zero NOx natural gas engine has received Near Zero NOx emission certifications from the U.S. Environmental Protection Agency and California Air Resources Board, the company announced.
The ISL G is the first mid-range engine to meet the 0.02 g/bhp-hr optional Near Zero NOx Emissions standards for medium-duty truck, urban bus, school bus, and refuse applications, according to Cummins Westport Inc. The ISL G NZ meets CARB certification eight years in advance of the 2023 California Near Zero NOx schedule.