Electric Fuel Pumps – Design, Work and Faults

Electric fuel pump is used in contemporary internal combustion motors to provide fuel in the fuel tank to the injectors. The pompe a essence solex (Solex fuel pump) must produce fuel under high pressure, so the nozzle may spray it in the engine. For the right engine performance fuel pressure must be included in allowed specifications for any particular engine. Too low-pressure may cause “fuel starvation” motor misfire, excessive shaking or halt the motor under load. Too much stress causes irregular engine running overly rich mix, and pollution.


Electric fuel pumps are generally set up in fuel cylinder (ingestion), though some could be set up outside. Some cars can be equipped with 2 pumps (one cylinder within the cylinder and the major pump in the exterior). The positioning of this pump in the fuel tank helps quiet the buzzing sound of cylinder’s electric engine. Submersion to the fuel helps soften and cool the cylinder’s motor. Driving with fuel Cylinder Full of less than Of its quantity may shorten the life span of this pump and cause quick overheating. In addition, it increases threat of pump left with no gasoline through rapid acceleration or deceleration.

The pump is generally a portion of a module which also comprises a nest which carries electric signals to the degree index, depending on the dash. If the fuel pump needs replacing, then it may be replaced individually or the comprehensive module assembly (it’s pricey, but much simpler).

Different pompe a essence solex have various layouts. Some old designs used to utilize forced displacement of this flow pump chamber. This kind of pump can create rather large pressure and continuous flow. But in the outlet of the fuel pump was powerful pressure fluctuations, therefore frequently from the gasoline after the pump has been set up damper to decrease the amplitude of pulsation of gasoline pressure. Circulating chamber may also be set up beyond the tank and utilized together with the 2nd centrifugal pump installed at the fuel tank.