The L9N engine is certified to the California Air Resources Board (CARB) optional low NOx standard of 0.02 g/bhp-hr.

The Kenworth T680 on-highway flagship and Kenworth T880 and T880S vocational leaders are now available with the Cummins Westport L9N near zero NOx emissions natural gas engine.

The L9N engine is certified to the California Air Resources Board (CARB) optional low NOx standard of 0.02 g/bhp-hr — a 90 percent reduction from engines operating at the current Environmental Protection Agency (EPA) NOx limit of 0.2 g/bhp-hr. In addition to ultra-low emissions, the L9N features on-board diagnostic capability, a maintenance-free three-way catalyst, closed crankcase ventilation system, and an engine control module with excellent durability, according to the manufacturer.

The T680, T880 and T880S offer the 8.9-liter L9N rated at 320 hp and 1,000 lb-ft of torque. The engine operates on 100 percent natural gas, which can be carried on the vehicle in either compressed natural gas (CNG) or liquefied natural gas (LNG) form. The engine also is compatible with renewable natural gas (RNG), which can provide even further reductions in GHG emissions.

“The Kenworth T680, T880 and T880S specified with the Cummins Westport L9N near zero emissions engine are ideal for pickup and delivery, vocational and refuse fleets focused on reducing their environmental impact and decreasing operating costs,” said Kurt Swihart, Kenworth marketing director.

For more information, visit www.cumminswestport.com.

This story also appears on Truck and Trailer Guide.

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