Fuel Pump: Description and Operation

GF47.20-P-2000MCC Component Description For the Fuel Pump








M3/3 Fuel pump with fuel level sensor

Location
The fuel pump is located in the fuel tank.

Task
The fuel pump provides the fuel injection system, under all operating conditions, with an adequate supply of fuel at the required pressure.
The integral fuel level sensor determines the fuel level in the fuel tank and emits an appropriate voltage signal to the ME-SFI [ME] control unit (N3/10).

Design
The fuel pump mainly consists of a vane pump, a swirl pot and the fuel level sensor.

Function
Actuation of the fuel pump is by the ME-SFI [ME] control unit. It suctions the fuel through a fuel strainer and the swirl pot out of the fuel tank. While cornering when the fuel level is low, the swirl pot prevents the fuel pump from drawing in air. The suctioned out fuel is pumped over the fuel filter and fuel pressure regulator to the fuel distributor.