Cummins Westport Receives 2018 Emissions Certifications for ISX12N Natural Gas Engine

Cummins Westport has received certifications from both the U.S. Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) for its 2018 ISX12N natural gas engine. Like the Cummins Westport L9N engine, the ISX12N meets CARB optional Low NOx standard of 0.02 g/bhp-hr, a 90 percent reduction from engines operating at the current EPA NOx limit of 0.2 g/bhp-hr.

The ISX12N is the first Class 8 truck engine for larger heavy-duty vehicles to certify to the 0.02 g/bhp-hr optional standard, providing the trucking industry with a near-zero emissions solution today.

“This official certification confirms that CWI natural gas engines are among the cleanest commercially-available engines today for truck and bus vehicle use,” said NGVAmerica President Daniel Gage.  “With 6.7, 9, and 12 liter options, Cummins Westport has a certified, commercially-available natural gas engine for virtually every medium- and heavy-duty application.”

Based on the ISX12 G, first introduced in 2013, the ISX12N natural gas engine will be available with ratings from 320 to 400 hp and up to 1,450 lb-ft. of peak torque. The ISX12N is designed for line haul, regional haul, refuse, and vocational trucks, as well as motorcoach and commuter buses. Like Cummins Westport’s new L9N and B6.7N engines, the ISX12N will feature a new engine control module with improved durability, on-board diagnostics, an enhanced, maintenance-free three-way catalyst, and a closed crankcase ventilation system.

“Cummins Westport’s 2018 product line offers customers ultra low emissions with reliable performance,” said Bart van Aerle, President of Cummins Westport. “The ISX12N near-zero emissions natural gas engine provides truck and bus customers with an industry-leading alternative fuel option for demanding applications.”

All CWI engines offer customers the choice of using CNG, LNG or renewable natural gas (RNG) as a fuel. RNG is pipeline-quality natural gas produced from the decomposition of organic waste, which can come from a variety of sources such as dairy farms, landfills, and urban waste treatment plants. Combining Cummins Westport’s ultra low emission engines with RNG fuel provides additional and significant GHG reductions.

Natural gas vehicles (NGVs) have long been the choice of fleet managers interested in escaping the volatility of ever-changing gasoline and diesel prices.  NGVs are powered by American fuel, American technology, and American innovation.  Vehicles powered by these new engines have the cleanest emissions profile of any fuel on the market today, and NGVs make a difference through a variety of applications – trucks, trash, transit, marine and rail.  No commercially-available heavy-duty powertrain solution today runs cleaner than natural gas.

The South Coast Air Quality Management District (SCAQMD), SoCalGas, California Energy Commission (CEC), and Clean Energy Fuels provided engine development funding support. Production will begin in February of 2018.