P47.10-2330-06
Location
75 Fuel tank
88 Fuel delivery module
B4/1 Left tank half fuel level sensor
B4/2 Right tank half fuel level sensor
M3 Fuel pump
The fuel tank is positioned at the frame floor ahead of the rear axle because of the through-loading facility (from trunk into passenger compartment).
Design
The fuel tank is made of double-layer plastic. Due to the
"U"-shaped cut-out, the fuel tank is divided into two interconnected chambers.
P47.10-2164-08
Function
55/2 Fuel filter with fuel pressure regulator
55/2 A fuel pressure regulator
88 Fuel delivery module
92 Fuel pressure line to the engine (regulated fuel pressure)
95 Suction jet pump
B Fuel pressure line from fuel pump to fuel filter (uncontrolled fuel pressure)
C Fuel delivery line from suction jet pump to fuel delivery module
D Fuel pressure line for supplying suction jet pump
B4/1 Left tank half fuel level sensor
B4/2 Right tank half fuel level sensor
M3 Fuel pump
A Return flow from fuel pressure regulator to fuel delivery module
The fuel pump (located in the left tank chamber) pumps the fuel via a fuel pressure line to the fuel filter with integrated fuel pressure regulator in the left fuel tank chamber.
A junction in this fuel pressure line supplies the suction jet pump with fuel. As a result, there is a differential pressure in the suction jet pump that draws the fuel from the deepest point in the left fuel tank chamber and pumps it to the fuel delivery module into the right tank chamber.
Moreover, excess fuel flows from the fuel pressure regulator to the fuel delivery module. This ensures that the left fuel tank chamber is properly emptied.
The filtered fuel, at a regulated fuel pressure of around 3.8 bar, is pumped from the fuel pressure regulator via the fuel pressure line to the engine (single-line system).
The housing of the fuel delivery module serves as a swirl pot. A swirl pot prevents the fuel pump drawing in air when cornering with a low level of fuel in the tank.
Each fuel tank chamber contains a fuel level indicator for detection of the fuel level.