There's a lot of talk about so-called clean diesel, which in North America means any diesel that meets tailpipe emissions standards that went into effect seven years ago. Those standards, known as ...

UNSW researchers have prototyped and tested a retrofit system that converts diesel engines to run on 90% hydrogen, radically reducing both carbon dioxide and nitrous oxide emissions while boosting ...

California developer "Big" Mike Harrah already owns a 3,000-hp hot rod powered by a PT boat's V12. His next project? A Peterbuilt-based rod with a 24-cylinder Detroit Diesel, churning 3,400 hp via ...