US: Cummins unveils new 15-liter natural gas engine for heavy trucks
Most LNG trucks today use a Natural Gas engine that is nothing but an advanced retrofit of a glorified diesel engine. Look wherever you want and although this engine is never going to see a drop of diesel in its lifetime, you will still find the diesel DNA everywhere. Thats why those engines don’t perform as well as a purebred Natural Gas engine will. And that’s what we increasingly get from engine builders. Those machines have been rethought from the ground up. The old and pervasive diesel DNA starts to disappear. And with it many issues we still deal with in Natural Gas engines. Tip of the hat to Cummins.
NGV Journal 
