Carburetor
The first carburetor was invented by Samuel Morey in 1826. The first person to patent a carburetor for use in a petroleum engine was Siegfried Marcus with his 6 July 1872 patent for a device which mixes fuel with air.
Harry Miller (auto racing)
Among Miller's innovations include perhaps the first engine mounted on a bicycle and the first outboard motor. Miller built a 4 cylinder engine and mounted it on a boat. His neighbor, Ole Evinrude, removed two cylinders and patented the first outboard motor. Miller also produced the first aluminum pistons, developed the aluminum alloys still used in engine development today, and the first carburetors and induction system to use Helmholtz resonators.