Cummins Westport Inc. announced that orders are being processed and production of the ISL G Near Zero (NZ) natural gas engine has commenced. The ISL G NZ is the first MidRange engine in North America to receive emission certification from both U.S. Environmental Protection Agency (EPA) and Air Resources Board (ARB) in California to meet the optional 0.02 g/bhp-hr. Near Zero NOx Emissions standards are eight years in advance of the 2023 California Near Zero NOx schedule and contributing to California Clean Air initiatives.
Exhaust emissions of the ISL G NZ are 90% lower than the current EPA and ARB NOx limit of 0.2 g/bhp-hr. and also meet the 2017 EPA greenhouse gas (GHG) emission requirements. Cummins Westport natural gas engines have met the 2010 EPA standard for particulate matter (0.01 g/bhp-hr.) since 2001. The ISL G NZ can operate on CNG, LNG or biomethane.
“The start of production of the ISL G Near Zero natural gas engine offers a game-changing solution for the reduction of urban tailpipe and engine related emissions,” said Rob Neitzke, President of Cummins Westport. “Combined with the reliability and operating improvements on the base ISL G engine, the ISL G Near Zero is now at the forefront of cost-effective and dependable emission reduction strategies in transit, medium-duty truck and refuse applications.”
In addition to the dramatic reduction in NOx, the ISL G NZ will feature Closed Crankcase Ventilation, reducing engine related GHG methane emissions by 70%. Leveraging the technology improvements of the ISL G, the ISL G NZ offers a range and performance with the lowest emissions, utilizing maintenance-free Three-Way Catalyst (TWC) aftertreatment. The engine also offers low emission performance and efficiency with engine ratings from 250-320 horsepower, and 660-1,000 lb-ft torque available.
Source: Cummins Westport