How does Fuel injection Work? Working of Fuel Injection System (FIS)

Ever wonder how fuel injection systems work? Fuel injectors spray a metered volume of fuel, in a mist, into either the air stream, or directly into the cylinders. This volume of fuel is precisely metered for the volume of air flowing past a sensor. There are two basic types of fuel injection systems, throttle body and port injection systems. The basics of a how a fuel injection system operates, including the names and purposes of parts in the system, are discussed. Also discussed are the two basic types of fuel injection systems.