Diezel
According to Merriam Webster, a diesel engine is: an internal combustion engine in which air is compressed to a temperature sufficiently high to ignite fuel injected into the cylinder where the combustion and expansion actuate a piston. "Diesel" also refers to the fuel that this kind of engine burns. It was named for its inventor, German engineer Rudolf Diesel (1858-1913). As a first name, it came to public attention in 2003 when singer Toni Braxton named a son Diesel Ky. Diezel with a Z is the name of a German company that makes guitar amplifiers.