GF47.10-P-2000IC Component Description For the Fuel Tank

GF47.10-P-2000IC Component Description For The Fuel Tank
- MODEL 211 with ENGINES 647.961, 648.961





Location
80 Fuel tank

The fuel tank is located on the vehicle underbody in front of the rear axle.





Structure (inside)
88 Fuel delivery module
95 Suction jet pump
B4/1 Left tank half fuel level sensor
B4/2 Right tank half fuel level sensor
M3 Fuel pump
A Fuel feed connection
B Fuel return flow connection

The fuel tank consists of two-layered plastic and is divided into two fuel tank chambers due to the U-shaped recess.

The fuel feed module is located along with a suction jet pump, the fuel pump and the right fuel level sensor in the right fuel tank chamber. A fuel strainer is installed as a rough filter below on the inlet to the fuel pump.
The housing of the fuel delivery module serves as a swirl pot. While cornering with a low level of fuel in the fuel tank, the swirl pot prevents the fuel pump from drawing air.
The connection plate with connecting pipe, a suction jet pump and the fuel level sensor on the left are located in the left fuel tank chamber.

Function
The fuel is held in the fuel tank.
The fuel pump draws the fuel from the fuel feed module through a fuel strainer. The fuel pump then pumps the suctioned in fuel over the fuel filter to the high pressure pump.
The leak fuel from the fuel injectors (Y76), the lubricating fuel from the high-pressure pump and the reduced fuel from the pressure regulator valve (Y74) and the high-pressure pump returns to the fuel tank via the fuel return. Here, the returned fuel supplies both suction jet pumps.
Via the suction jet pumps in the fuel feed module, the swirl top (when fill level of fuel tank is low) is also filled with fuel from the fuel tank.
The suction jet pump in the left fuel tank chamber guarantees the left fuel tank chamber is evacuated.

Fill level for fuel tank
Each fuel tank chamber has a fuel level sensor (float-and-lever sensor with double potentiometer).
Voltage signals from both fuel level sensors are sent separately to the rear SAM control unit with fuse and relay module (N10/2). This processes the voltage signals and transfers an appropriate signal (for the instrument cluster (A1)) over the CAN data bus.