U.S.-based manufacturer Kenworth announced it will begin production of Kenworth T680 and T880 models specified with the new Cummins X15N natural gas engine in the third quarter of 2024. The Cummins X15N, powered by Compressed Natural Gas (CNG), Renewable Natural Gas (RNG) or Liquified Natural Gas (LNG), is the industry’s first 15-liter natural gas engine that delivers diesel-like power, range, and performance.

In addition, the Cummins X15N meets stringent EPA emission requirements and CARB 2024 Low NOx standards and features up to a 10% improvement in fuel economy over Cummins’ 12-liter natural gas engine with similar rating and duty cycle. Kenworth is the first major truck manufacturer to offer an engine that meets CARB’s NOx emission standards.

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Cummins X15N natural gas engine on Kenworth Class 8 truck

“The integration of the Cummins Clean Fuel Technologies fuel delivery system and X15N engine give Kenworth customers an added level of serviceability of both the engine and fuel delivery system because guidance for all service procedures is available on Cummins platforms like QuickServe Online,” said Mike Zimmerman, Cummins Clean Fuel Technologies general manager. “We think this powertrain combination enhances the overall value proposition of the vehicle and we’re excited to work with Kenworth and Cummins to continue to bring value to the customers.”

“We’re thrilled to soon begin production of Kenworth trucks with the Cummins X15N natural gas engine,” added Kevin Haygood, Kenworth assistant general manager for sales and marketing. “This new engine offering will be a great alternative solution for Kenworth customers seeking to reduce emissions in applications that require the power and performance they’re accustomed to with diesel engines.”


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