What are the main components of an electronically controlled fuel injection system?
2 Answers
An electronically controlled fuel injection system consists of the following three subsystems: the fuel supply system, the air intake system, and the electronic control system. 1. The fuel supply system is composed of a fuel tank, fuel pump, fuel filter, pressure regulator, pulsation damper, fuel injectors, fuel supply lines, and return lines. 2. The air intake system includes an air cleaner, throttle valve, air flow meter, intake chamber, idle speed control valve, and intake control valve. The function of the fuel supply system and air intake system is to mix the fuel injection quantity and air intake quantity determined by the ECM/ECU based on the throttle position (engine load) and engine speed to form a combustible mixture, which then enters the cylinders for combustion and power generation. 3. The electronic control system consists of several sensors that detect various engine conditions, an ECU that determines the fuel injection quantity based on sensor signals, and fuel injectors that operate according to ECU commands. Its main function is to determine the optimal fuel injection timing and injection duration according to different engine operating conditions.
I usually pay close attention to these things. The electronic fuel injection system is mainly controlled by the car's computer unit, with various sensors like the air flow meter detecting air intake, the fuel injectors responsible for spraying fuel into the cylinders, and the fuel pump ensuring stable fuel pressure. When I encounter issues like difficulty starting the car or a sudden increase in fuel consumption, I first check if the fuses and sensor connectors are loose or dirty, as system malfunctions can have a big impact. It's more precise than the old carburetor systems, and modern cars all use it. Regular maintenance can prevent failures and save on costly repairs. Over time, you learn that keeping the fuel system clean is crucial. I clean out the interior clutter weekly to prevent dust and dirt from clogging the sensors, ensuring safe and worry-free driving.
