GF47.20-P-4141RT | Component description for the fuel feed module | 17.5.05 |
ENGINE 642 in MODEL 251.0 /1 up to Model Year 8
P47.10-2363-06
75 Fuel tank
88 Fuel delivery module
B4/1 Left fuel level sensor
B4/2 Right fuel level sensor
M3 Fuel pump
Location
The fuel feed module is integrated into the fuel tank.
Task
The fuel feed module ensures delivery from the fuel pump through the swirl pot when fuel level is low in the fuel tank and during extended cornering.
P47.10-2351-11
Design
88 Fuel delivery module
95 Suction jet pump
A Feed line
B Return flow pipe
C Return flow pipe
B4/1 Left fuel level sensor
B4/2 Right fuel level sensor
M3 Fuel pump
Function
The fuel feed module, the suction jet pump on the right and the right tank half fuel level sensor are located in the right fuel tank chamber.
The following components can be found in the left fuel tank chamber:
Closing plate with connecting pipe
Line plug
Left suction spray pump
Left fuel level sensor
The fuel flows from the electric fuel pump into the fuel feed module through the fuel pressure line via the connection to the fuel main filter. The fuel pressure is regulated by the fuel pump to 8 bars. The delivered but unwanted fuel flows over the return line back into the fuel tank.
A suction effect is produced in the suction jet pump which draws the fuel from the deepest point out of the left fuel tank chamber and delivers it into the fuel delivery module. This ensures that the left tank chamber is emptied. The housing of the fuel delivery module serves as a swirl pot. When cornering with a low level of fuel in the fuel tank, it prevents the fuel pump drawing in air.