The Role Of The Fuel Pressure Control Valve

The function of the Fuel Pressure Control Valve is to:

1. Adjust the fuel pressure of the fuel supply system to keep the difference between the system oil pressure and the intake manifold pressure constant;

2. Buffer the pressure pulsation generated by the fuel pump and the pressure fluctuation caused by the intermittent fuel injection of the injector.

The fuel pressure valve is also called the fuel pressure regulator. The automobile fuel pressure regulator is a part of modern automobiles. It belongs to the fuel supply system of the electronically controlled engine. It is generally installed on the fuel return pipe side of the fuel injector rail. The working principle of the fuel pressure regulator is that when the oil pressure is higher than the standard value, the high-pressure fuel will move up the moving diaphragm, the ball valve will open, and the excess fuel will flow back into the fuel tank through the return pipe; when the pressure is lower than the standard value, the spring The diaphragm will be pressed down to close the ball valve and stop oil return.