The working principle of the fuel pump control unit is based on the coordination of the rotor disc and the roller. The rotor pushes the roller under the action of centrifugal force to form the flow of fuel. When the pump body rotates, it acts like a piston, drawing fuel from the intake port and pushing fuel into the system through the outlet port. When shut off, the presence of a check valve ensures that fuel does not return to the tank, maintaining the "residual pressure" in the fuel line
The fuel pump control unit plays a vital role in the internal operation of the vehicle, ensuring the normal operation of the fuel delivery system. Its main functions include:
fuel delivery : fuel pump control unit through mechanical design and intelligent regulation, to achieve accurate fuel delivery, to ensure that fuel can effectively reach all friction parts of the engine, to provide stable lubrication support .
Pressure control and protection : The maximum pump oil pressure of the fuel pump is set by the pressure limiter. Once the preset limit is reached, the limiter switches on the bypass to prevent overpressure from damaging the pump body and ensure that the fuel pressure is maintained within the safe range
