VANCOUVER, B.C. — Cummins Westport will introduce its new B6.7N natural gas engine for the school bus market in 2018.
The B6.7N is rated up to 240 horsepower/560 lb-ft. torque. The 6.7-liter mid-range engine is certified to the California Air Resources Board’s optional low NOx standard of 0.1 g/bhp-hr.
Rob Neitzke, president of Cummins Westport, said that with more school districts looking to ramp up emission reductions, the B6.7N offers “a low-emissions, reliable product operating on domestically available natural gas.”
The B6.7N features onboard diagnostics, a closed crankcase ventilation system, a new engine control module, and performance and reliability improvements, according to Cummins Westport. A maintenance-free three-way catalyst offers consistent emissions control with no diesel particulate filter or selective catalytic reduction required, according to the company.
Customers can choose to use compressed natural gas, liquefied natural gas, or renewable natural gas with the engine.
The B6.7N is manufactured at Cummins’ mid-range engine plant in Rocky Mount, North Carolina. It comes with a two-year base warranty, with parts and service support by Cummins sales and service.