How a Car Engine Works
It's worth noting that the engine illustrated is a gasoline direct injection engine, which are fairly common on new cars but historically not so.<p>Until the early 2000s most fuel injected gasoline engines were multi-point injection - the fuel was injected in to the incoming air stream immediately before the cylinder, and before that indirect injection which injected where the carburettor was.<p>Then there are carburettor engines.<p>Most diesel engines have been direct injection for many decades now, due to the behaviour of the fuel.