In 2016, Cummins Westport will introduce a new dedicated natural gas engine for transit, shuttle and school bus, medium-duty truck, and vocational vehicle markets. Based on the Cummins ISB6.7 diesel platform, the Cummins Westport ISB6.7 G will offer up to 260 hp (194kW) and 660 lb-ft (895 Nm) of torque, and will be available with automatic transmissions. Certified at launch to 2016 U.S. Environmental Protection Agency (EPA) and California Air Resources Board emissions standards, the ISB6.7 G will also meet 2016 EPA GHG requirements.
The ISB6.7 G features the same advanced combustion controls with Three-Way Catalyst (TWC) as Cummins Westport’s ISL G & ISX12 G engines. It operates on 100 percent natural gas, which can be carried on the vehicle in either compressed or liquefied form (CNG / LNG respectively). It can also run on 100 percent biomethane or renewable natural gas, which meets published Cummins fuel specifications.
ISL9 for Medium-Duty Truck (EPA 2010)
Expect the same high level of performance, reliability and fuel economy with the Cummins ISL9 EPA 2010 engine as you do with today’s ISL. The ISL9 has one of the highest power-to-weight ratios in its class with heavy-duty features like replaceable wet liners. It also features the XPI fuel system – the same technology that’s used in the ISX15. These advances combined with an improved Electronic Control Module (ECM) and improved air flow, allow the ISL9 to run stronger and with greater responsiveness than ever before. Ratings range from 345-380 hp with a maximum 1300 lb-ft of torque.
How did we make these improvements and still meet stringent 2010 emissions standards? With a totally integrated system, that’s how. Everything from the advanced fuel injection technology, improved cooled EGR subsystem and Cummins VGT™ Turbocharger to the proven Cummins Aftertreatment System that includes Selective Catalytic Reduction (SCR) technology has been engineered and manufactured in-house. The result is a totally integrated system delivering an engine that provides near-zero emissions without compromising performance.