diesel engine

Sage Kokjohn, left, and Rolf Reitz check a room with test monitors and air regulators that are connected to an operating, one-cylinder diesel engine in the Caterpillar Engine Lab at the Engineering Research Building. Photo: Jeff Miller
Best-ever efficiency points to clean, green gas-diesel engine

The most efficient diesel in the engine-research world The one-cylinder test engine in the basement

The rebirth of the diesel engine

Automotive technology: Electric and hybrid cars are being given a run for their money by