‘Near Zero’ Variant of 8.9-Liter ISL G Engine Is Building at Rocky Mount,
CEC Cites Emissions ‘Levels Near or Equal to Those of Zero Emission EVs’
Cummins Westport says that “orders are being processed and production of the ISL G Near Zero (NZ) NOx natural gas engine has commenced.” updated October 19
The new variant of the 8.9-liter engine is certified to California’s optional 0.02 grams of NOx per brake horsepower-hour – 90% lower than the current U.S. EPA and California Air Resources Board requirements (F&F, September 17, 2015).
“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,” Cummins Westport president Rob Neitzke said in a release.
“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.”
First Fit or Retrofit
The ISL G NZ is manufactured at the Cummins Engine Plant in Rocky Mount, North Carolina. It is available as a first fit engine with transit, shuttle and school bus, refuse and truck original equipment manufacturers (OEMs), or as an engine replacement (repower) for existing ISL G vehicles.
Coupled with RNG/Biomethane, CEC Sees ZEV Equivalency
The California Energy Commission staff says in its draft 2017-2018 Investment Plan Update for the Alternative and Renewable Fuel and Vehicle Technology Program (CEC-600-2016-007-SD), “Natural gas engines and emission control technologies that achieve the ARB optional low oxides of nitrogen (NOX) emission standard are now commercially available, and, when combined with biomethane fuel, can reduce the life-cycle emissions of medium- and heavy-duty vehicles to levels near or equal to those of zero emission electric vehicles.” (emphasis added)
Click image or here for the CEC document (direct PDF link; see page 4).
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Source: Cummins Westport with Fleets & Fuels follow-up