The engine was simple conceptually but to make it all work in sync seemed an impossible mechanical task. Several pistons ran in their cylinders powered by small electric detonations of liquid or gaseous fuel which in turn turned a crankshaft which was connected to a camshaft and a timing belt, then the human’s description had failed her. He had no real idea of how it worked beyond that. He could explain the basic function of the various mechanisms. He knew what a radiator or transmission did. But he clearly had no real idea HOW they did it. 