By Joseph Bebon, NGT News.
At the Alternative Clean Transportation (ACT) Expo in Long Beach, Calif., Cummins Westport Inc. (CWI) has announced its model-year 2018 dedicated natural gas engines for regional haul truck/tractor, vocational and transit, school bus, and refuse applications. According to CWI, the new lineup comes with a change in names, following Cummins tradition of using B, L and X series letters, followed by engine displacement. The letter “N” denotes engines that are fueled by natural gas.
The new B6.7N, L9N and ISX12N engines continue the evolution of on-highway natural gas products from CWI, featuring U.S. Environmental Protection Agency (EPA) and California Air Resources Board (CARB) optional low NOx certification, onboard diagnostics, closed crankcase ventilation systems, and performance and reliability improvements. The new ISX12N features a redesigned fuel system with fewer parts and improved performance.
Like the L9N that replaces the ISL G Near Zero, the 2018 ISX12N heavy-duty natural gas engine for regional haul truck/tractor, vocational and refuse applications will also be certified to EPA and CARB optional low NOx emissions standards of 0.02 g/bhp-hr.