Common rail system composition: four core components

The fuel injector, high-pressure pump, high-pressure fuel rail, and electronic control unit are the four core components of the diesel common rail system.

Fuel injector: The common rail fuel injector accurately injects fuel at a fixed time and quantity based on the calculation of the electronic control unit.

High pressure pump: The high-pressure pump compresses the fuel into a high-pressure state to meet the requirements for fuel injection pressure and quantity.

High pressure fuel rail: The high pressure fuel rail suppresses pressure fluctuations in high-pressure pump supply and injector injection through energy storage.

Electronic control unit: The electronic control unit is like the engine's brain, controlling the operation of the engine and diagnosing faults.

Two obvious features: high-pressure fuel rail and electronic control unit

Distinguishing the common rail system from the ordinary diesel fuel system, the most obvious feature of the common rail system can be seen from its appearance, which is the high-pressure fuel rail and the electronic control unit.