What are the reasons for the high-pressure common rail fuel pump not delivering oil?
1 Answers
Sub-shutdown switch is in the connected state; rail pressure is too low; battery voltage is too low; synchronization signal is incorrect. Here are the relevant introductions: High-pressure common rail diesel engine: A high-pressure common rail diesel engine refers to a fuel supply machine in which the generation of injection pressure and the injection process are completely separated in a closed-loop system composed of a high-pressure fuel pump, pressure sensor, and electronic control unit (ECU). High-pressure fuel pump: The high-pressure fuel pump delivers high-pressure fuel to the common rail (Rail), achieving precise control through the oil pressure in the common rail, making the pressure in the high-pressure fuel pipe (Pressure) independent of the engine speed, which can significantly reduce the degree to which the diesel engine's fuel supply pressure varies with engine speed.