General Automotive Electronic Fuel Injection Device has three components: supply of gas supply and control of some parts. Some of them oil from tanks, gas pumps, fuel filter, pressure regulator and fuel injector components, gas pumps gasoline from the tank filter out impurities in the fuel filter, pressure regulator, the pressure to a high pressure gasoline Intake manifold in the negative pressure, then sent to the pipeline by the spray tanks. Jet equivalent of a switch, control switch components is ECU (electronic control unit).

Jet from electromagnetic coil control, and the electromagnetic coil currents on and off is controlled by the ECU. According to ECU sensor feedback signal processing, signal sent to the jet, the signals identified jet injection petrol and open time, and this time interval known as the jet's "pulse width." Jet electromagnetic coil electricity generated from the magnetic field, in the role of the magnetic field of the spring plunger overcome by suction, leaving with a valve seat, under the pressure of gasoline in the mouth emitted from the nozzle when electromagnetic coil magnetic field when electricity disappeared , in the spring plunger under downward force, the valve seat withstand the nozzle mouth closed, the gasoline it from leaving. Valve to construct a ball valve and the valve division two. In order to ensure the precision of the injection, the needle and ball valve or valve seat are required to have a high machining accuracy, and the valve lift small, only about 0.1 mm. The pressure regulator, in front of the injector is a high-pressure Circuit, the rear intake manifold is a low pressure formed a pressure differential negative pressure to ensure that the fuel spray mist formed near the intake valve.