What are the basic components of an electronic fuel injection system?
2 Answers
The basic components of an electronic fuel injection system are: 1. Fuel supply system; 2. Intake system; 3. Electronic control system. The electronic fuel injection system is an advanced fuel injection device that replaces the carburetor in gasoline engines, and its functions are: 1. Improving the atomization of liquid fuel during the mixture formation process in gasoline engines; 2. Precisely controlling the fuel injection quantity according to changes in operating conditions, making combustion more complete; 3. Increasing power and meeting emission requirements. The working principle of the electronic fuel injection system is: In the electronic fuel injection system, gasoline is pumped from the fuel tank by an electric fuel pump, delivered through a fuel filter, etc., to the electromagnetic injector and cold start injector. The regulator is connected in parallel with the injector to ensure that the pressure difference between the gasoline inside the electromagnetic injector and the injection environment remains constant.
As a seasoned driver with over a decade of experience, I've dealt with numerous fuel injection system issues. This system primarily consists of four major components: the control brain ECU (on-board computer), the fuel delivery system responsible for supplying gasoline (including fuel pump, injectors, fuel rail), data-collecting sensors (such as air flow meters and oxygen sensors), and various actuators (like throttle motors and fuel pressure regulators). The entire system operates like a precision orchestra - sensors act as ears gathering data, the ECU serves as the conductor processing information, and actuators carry out the physical work. I remember one time my car had sluggish acceleration - after extensive troubleshooting, it turned out to be carbon buildup on the throttle position sensor causing signal distortion, which made the ECU miscalculate the fuel quantity. After cleaning, it ran smoothly again immediately. For routine maintenance, pay special attention to the replacement cycle of the fuel filter, especially for owners who frequently use low-grade gasoline.
