Near Zero natural gas engine for Kenworth

Kenworth T680 and T880 trucks will be available with Cummins Westport ISL G Near Zero NOx emission natural gas engines in early 2017.

Emissions from the engines are 90% lower than the current NOx limit of 0.2 gram per brake horsepower-hour, and meet the U.S. Environmental Protection Agency’s 2017 standards for Greenhouse Gases. Advanced calibration, a three-way aftertreatment system, and closed crankcase ventilation system help to meet those.

The 8.9-liter Cummins Westport ISL G Near Zero offers up to 320 horsepower and 1,000 lb-ft of torque. It can run on Compressed Natural Gas or Liquefied Natural Gas, and is even compatible with Renewable Natural Gas.

John G. Smith is the editorial director of Newcom Media's trucking and supply chain publications -- including Today's Trucking,, TruckTech, Transport Routier, Inside Logistics, Solid Waste & Recycling, and Road Today. The award-winning journalist has covered the trucking industry since 1995.

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