1. A fuel pressure regulator
The term dedicated automotive industry. It is one of the common components of automotive fuel injection system EFI.
Function: Security automobile fuel pressure in the oil passage means normal;
Working principle: the size of the hydraulic chamber is coordinated by both the degree of vacuum of the gas spring, when the hydraulic pressure higher than the standard value, high pressure fuel on top of the movable diaphragm will move, the ball valve is opened, excess fuel will be a tank via the return pipe reflux; when the pressure lower than the standard value, the lower film sheet will spring ball valve is closed to stop oil return. The pressure regulator is to maintain the pressure in the passage is kept constant, low oil pressure is too weak the injector fuel injection or fuel injection, the hydraulic pressure is too high so that the passage injector destroyed or damaged. Internal
The pressure regulator has a diaphragm, the pressure control valve functions as opening and closing action, oil pressure is below a certain value, the pressure valve closed, the internal oil pressure by the oil pump pressure increases, an increased after exceeding a predetermined pressure, the diaphragm opening, the overpressure fuel back into the tank through the return line, the pressure acts;