Fig. 2.62. Fuel pump: 1 – fuel pump block; 2 – fuel level indicator sensor
Since the vehicle uses a returnless fuel system, the fuel pump unit, except for the fuel gauge sensor, is integrated. To prevent engine power from decreasing due to insufficient fuel supply, such as when the vehicle is turning, the fuel pump has been designed to provide a constant supply of fuel. The fuel remaining in the fuel pump reservoir is supplied from two sources: a check valve and an ejector (Fig. 2.62
Fig. 2.63. Fuel pump operation diagram: 1 – fuel pump block; 2 – fuel level indicator sensor; 3 – fuel pump; 4 – fuel filter (high pressure); 5 – fuel filter (low pressure); 6 – fuel pump reservoir; 7 – pressure regulator; 8 – jet fuel pump; 9 – distributor valve; 10 – main fuel flow; 11 – reverse fuel flow; 12 – to the fuel distributor; 13 – fuel tank