Cummins Westport Inc. has received certifications from both the U.S. Environmental Protection Agency (EPA) and Air Resources Board (ARB) in California for its 2018 ISX12N natural gas engine. Like the Cummins Westport L9N engine, the ISX12N meets California ARB optional Low NOx standard of 0.02 g/bhp-hr, a 90% reduction from engines operating at the current EPA NOx limit of 0.2 g/bhp-hr. The ISX12N also meets 2017 EPA greenhouse gas emission (GHG) requirements.
The ISX12N, which can use CNG, LNG, or biomethane as a fuel, 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. Production will begin in February of 2018.
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. It 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.”
Source: Cummins Westport