What are the components of an electronically controlled fuel injection system?
2 Answers
Here is a detailed introduction to the components of an electronically controlled fuel injection system: 1. Air path: Air supply system. 2. Fuel path: Fuel supply system. 3. Electrical path: Control system. Below is additional information about the electronically controlled fuel injection system: 1. Alternative name: The full name is Electronic Control Fuel Injection System, commonly known as gasoline injection. 2. System: The electronically controlled fuel injection system is a system where the Engine Control Unit (ECU) controls the fuel injection timing, injection pulse width, and injection pattern of a gasoline engine. Due to the high volatility of gasoline, it is easy to form a homogeneous combustible mixture outside the cylinder. Therefore, the carburetor supply method installed on the intake manifold was used. However, this fuel supply system could not precisely control the air-fuel ratio of the mixture under different operating conditions, and thus, it has been replaced by the electronically controlled gasoline injection method.
I've driven quite a few cars. The older models used to have carburetors, but now they all come with electronic fuel injection systems, which are much more convenient. The system mainly consists of several key components: an ECU (Engine Control Unit) that acts like the brain controlling the entire system; various sensors collecting data, such as the mass airflow sensor monitoring intake volume and temperature sensors checking coolant temperature; fuel injectors that precisely spray fuel; a fuel pump delivering gasoline from the tank; and a fuel pressure regulator maintaining stable pressure. These parts work together - the ECU analyzes sensor signals to determine injection timing and quantity, making the car start smoothly while saving fuel. During routine maintenance, I always check if the injectors are clogged, as sensor cleanliness is crucial to avoid affecting fuel efficiency. Regularly replacing the fuel filter also helps extend the system's lifespan.
