Fuel system of diesel engines (Opel Insignia A)

The fuel pump module, located in the fuel tank, delivers fuel through a pressure fuel line to a mechanical high-pressure fuel pump (HPFP). The HPFP is located in the lower left side of the engine. Fuel passes through a filter with a heater and a water separator. The performance of the HPFP is regulated by the electronic engine control unit, creating the fuel pressure necessary for the operation of the fuel injectors. The fuel injectors inject fuel directly into the combustion chambers of the engine. The injection time and duration are controlled by the electronic engine control unit. Separate return fuel lines drain excess fuel back into the fuel tank.

The fuel tank is used to store fuel. The electric fuel pump is installed in the primary fuel tank module. It supplies fuel not only to the high-pressure fuel pump, but also to the suction ejector, which transfers fuel from the secondary part of the fuel tank. In another version of the fuel tank, the fuel pump module supplies fuel simply to the high-pressure fuel pump. The fuel tank is fixed to the bottom of the body with two metal clamps. The fuel tank is made by stamping from high-density polyethylene.

Material was taken from a resource www.OPELBOOK.ru