But that doesn't make use of any waste heat from exhaust gasses. Different process entirely. - Doug ----- Original Message ----- From: <ScottyCBoy@aol.com> > In a message dated 10/6/99 8:53:19 AM Central Daylight Time, > ur-quattro@msn.com writes: > Some diesel engine manufacturers attache a turbine > impeller directly to the crankshaft, which is a little more efficient than > using it to compress air. >