The trucks are specified with both a 72- and a 150-gallon LNG tank to provide a range of approximately 650 miles, and are expected to make two 600-mile round trips per day in a driver slip-seat operation. The Cummins Westport ISX12 G engine uses a maintenance-free, three-way catalyst and does not require a diesel exhaust fluid (DEF) tank, diesel particulate filter (DPF) or selective catalytic reduction (SCR) technology. Kenworth offers the ISX12 G in ratings to 400-hp and 1,450 ft-lb. torque.
“The new ISX12 G offers an excellent natural gas option for those regional, refuse and pickup and delivery applications that need a little more power and torque than the 8.9-liter Cummins Westport ISL G,” said Andy Douglas, Kenworth national sales manager for specialty markets. “Many operators have the potential to realize significant reductions in fuel costs and emissions, particularly if they’re replacing older diesel trucks with new Kenworth trucks powered by natural gas.”