What parts does the automobile EFI system consist of?

Automobile electronic control gasoline injection device generally consists of three parts: oil supply part, gas supply part and control part. The oil supply part consists of oil tank, gasoline pump, gasoline filter, pressure regulator and fuel injector. The gasoline pump pumps gasoline from the fuel tank, filters impurities through the gasoline filter, pressurizes the gasoline through the pressure regulator to make the pressure of the gasoline higher than the negative pressure of the intake manifold, and then sends the gasoline to the injectors of each cylinder through the oil pipeline. The fuel injector is equivalent to a switch, and the component that controls the switch is ECU (Electronic Control Unit).