UPS adds 48 more heavy-duty LNG tractor trucks to fleet; Westport HD System
Green Car Congress
FEBRUARY 22, 2011
The Westport HD System consists of the GX 15-liter engine (based on the Cummins ISX diesel engine with cooled exhaust gas recirculation), proprietary Westport fuel injectors, LNG fuel tanks with integrated cryogenic fuel pumps, and associated electronic components to facilitate robust performance and reliable operation.
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