Fig. 2.62. Fuel pump: 1 – block of the fuel pump; 2 – sensor of the index of level of fuel

Because on the car the system irrevocably of fuel in a tank, the block of the fuel pump, except for the sensor of the index of level of fuel is used, is integrated. To prevent reduction of engine capacity because of an insufficient toplivosnabzheniye, for example, when the vehicle turns, the fuel pump was developed so that supply of fuel was a constant. The fuel remaining in the tank of the fuel pump moves from two sources: backpressure valve and ejector (fig. 2.62, 2.63).

Fig. 2.63. Scheme of operation of the fuel pump: 1 – block of the fuel pump; 2 – sensor of the index of level of fuel; 3 – fuel pump; 4 – fuel filter (high pressure); 5 – fuel filter (low pressure); 6 – tank of the fuel pump; 7 – pressure regulator; 8 – jet fuel pump; 9 – valve distributor; 10 – main stream of fuel; 11 – return stream of fuel; 12 – to the fuel distributor; 13 – fuel tank