Rudolf Diesel invented the diesel engine.
He’s not actually in the fuel, mind you, except in spirit.
The German inventor developed the diesel engine back in 1890.
The diesel engine has the highest thermal efficiency of any regular internal or external combustion engine due to its very high compression ratio.
Manufactured in two stroke and four stroke versions, the largest diesel engine in the world is currently a Wartsila marine diesel of about 80 MW output.