Cummins has announced it will bring to market a 15-liter natural gas engine for heavy-duty trucks. The 15-liter engine will offer ratings up to 500 hp and 1,850 ft-lbs of torque. It is expected to ...

It will put out 500 hp and 1,850 lb.-ft. of torque, and will weigh about 500 lb. less than a 15L diesel, Cummins claims. “Initial interest in the 15-liter natural gas powertrain has far exceeded our ...

The X15N produces between 400-500 hp with up to 1,850 lb.-ft. of ... “We’re thrilled to be the first company to acquire the T680 with the X15N 15-liter natural gas engine,” said Marshall.

Westport Innovations announced it is discontinuing its 15-liter liquefied natural gas engine, ... but that can’t match the maximum 475 hp and 1,750 pound-feet ratings for the HD15. ...