Cummins Westport ISL G Near Zero engine
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VANCOUVER, BC – Cummins Westport ISL G Near Zero engine’s exhaust emissions will be approximately 90% lower than the current limit of 0.2 g/bhp-hr. This makes it North America’s first MidRange engine to receive certification from the California Air Recourses Board and the EPA for having the Near Zero standard for school buses, refuse applications, urban buses, and medium-duty trucks. The engine also meets the requirements for the 2017 EPA greenhouse gas emissions.

The engine’s low emissions do not compromise on power. It performs with the Three Way Catalyst after treatment. These devices are packaged with the muffler and are maintenance free. CWI natural gas engines can function efficiently without active after-treatments like Selective Catalytic Reduction and Diesel Particulate Filter.

Not only does the ISL G NZ engine reduce NOx emissions by 90%, it also reduces methane emissions by 70%. This is due to the Closed Crankcase Ventilation feature. Cummins engines have passed the 2010 EPA particulate matter requirements since 2001.
“These North America emission certifications result in a game-changing reduction in urban tailpipe and engine related emissions. This, combined with the reliability and operating improvements on the base ISL G engine, puts CWI natural gas engines at the forefront of cost-effective and dependable emission reduction strategies in transit, medium-duty truck and refuse applications,” said Rob Neitzke, President of Cummins Westport Inc.

The California Air Recourses Board (CARB) has declared the Nero Zero emission level as being equivalent to a 100% battery operated carrier. The ISL G NZ engine passes this certification eight years ahead of the scheduled 2023 California Clean Air Initiative. The engine is suited to offer an effective and economic solution to the improvement of air quality in California.

Production of the engine is scheduled to begin early 2016. It will function as an engine replacement for existing ISL G models, which will immediately reduce NOx emissions. This will be well in advance of the Californian Near Zero NOx goal for 2023. It will also be offered as a first-fit engine and refuse Original equipment manufacturers.