GF07.61-P-3004AM ME Fuel Supply, Function

GF07.61-P-3004AM ME Fuel Supply, Function
ENGINE 113.990 in MODEL 211, 219
ENGINE 113.991 in MODEL 215, 220
ENGINE 113.992 in MODEL 230 up to Model Year 2008 /AEJ 07
ENGINE 113.993 in MODEL 463 up to 31.5.12
ENGINE 113.995 in MODEL 230 up to Model Year 2008 /AEJ 07





Model 211, 219

45 Filler neck
55/1 Fuel filter with fuel pressure regulator
71 Check valve
72 Float valve
75 Fuel tank
75/1 Expansion reservoir
77 Activated charcoal canister
77/1 Vent/breather line
88 Fuel delivery module
95 Suction jet pump

95a Suction jet pump with check valve
B4/3 Tank pressure sensor (ON )
K27/1 Fuel pump relay
M3 Fuel pump (fuel double pump)
N3/10 ME-SFI [ME] control unit
Y58/1 Purge control valve
Y58/4 Activated charcoal canister shutoff valve (ON )

a Fuel pipe
b Purge line
c Electrical line
d Vent/breather line

A high-performance fuel system with two fuel pumps is used in order to satisfy the requirements in respect of constant fuel pressure with a matching delivery even at high engine loads and revs.
In case of engine 113 with supercharger, the fuel system pressure is controlled to around 5.0 bar (to around 3.8 bar in case of naturally aspirated engine versions).

Model 211, 219
In case of E 55 AMG and CLS 55 AMG, two identical fuel pumps (M3) are used. These are connected parallel and are located in the right fuel tank.

Fuel flows from both the two-stage fuel pumps in the fuel delivery module (88) out of the right fuel tank chamber to the fuel filter with a fuel pressure regulator (55/1) into the left fuel tank chamber.

The fuel pressure regulator limits the fuel pressure to approx. 5.0 bar. The depressurization of the excess delivered fuel takes place via a fuel return line back into the right fuel tank chamber. This operates the suction jet pumps (95) in the fuel delivery module, which are used for filling the fuel delivery module. A junction in the fuel pressure line to the fuel filter with an integrated fuel pressure regulator provides a part of the flow of the fuel feed line to the suction jet pump with a check valve (95a) which extracts the fuel from the deepest point of the left fuel tank chamber and pumps it into the fuel feed module.
This ensures proper emptying of the left fuel tank chamber.

The fuel pumps are actuated via the fuel pump relay (K27/1) by the ME control unit (N3/10) with a ground signal.





Models 215, 220, 230, 463

55 Fuel filter
55/2 Fuel pressure regulator 5.0 bar
55/3 Fuel pressure regulator 5.3 bar
55/3a Throttle (50 liters/h)
55/4 Splash bowl
71 Check valve
75 Fuel tank
76 Vent valve (except and model 463 )
77 Activated charcoal filter
77/1 Vent/breather line
95 Suction jet pump

B4/3 Tank pressure sensor (ON )
B4/7 Fuel pressure sensor
K27/5 Intank fuel pump relay (model 230, 463)
K40/5kT Fuel pump relay (model 215, 220, 230)
K40/8kX Intank fuel pump relay (model 215, 220)
M3 Fuel pump
M3/1 Intank fuel pump
N3/10 ME-SFI [ME] control unit
N10/2kA Fuel pump relay (model 463)
N118 Fuel pump control unit
N118/1 Intank fuel pump control unit (model 230 up to 06/2002)
Y58/1 Purge control valve
Y58/4 Activated charcoal canister shutoff valve (ON )

a Fuel pipe
b Purge line
c Electrical line
d Vent/breather line
e Electrical line (model 230 up to 06/2002)

Model 215, 220, 230, 463

The fuel pump (M3) suctions the fuel from the swirl pot (55/4) in the fuel tank (75) and delivers it to the fuel filter (55), where contamination is removed. The fuel pressure is detected by the fuel pressure regulator (B4/7) after the fuel filter and is limited to approx. 5.0 bar via the fuel pressure regulator (55/2).
So that the fuel pressure of approx. 5.0 bar is available to the injection system at each operating condition, the fuel pump is controlled by the fuel pump control unit (N118) up to its maximum delivery quantity of approx. 300 liters/h. In addition, the fuel pump control unit processes the signal from the fuel pressure sensor.

The fuel pump control unit is actuated by the ME-SFI [ME] control unit (N3/10) via the fuel pump relay (K40/5kT, N10/2kA).
Excess fuel delivered is directed back to the fuel tank by the fuel pressure regulator. At this time, this fuel operates the suction jet pump (95) in the swirl pot, which fills the swirl pot with fuel.
In order to limit the fuel feed to the suction jet pump (50 l/h), the throttle (55/3a) is located in the fuel line to the suction jet pump.
The fuel pressure regulator (55/3) limits at the same time the fuel pressure to approx. 5.3 bar.
In addition to the suction jet pump, the intank fuel pump (M3/1) also fills the swirl pot (with a delivery rate of 220 l/h) in case of a higher engine load and speed. The intank fuel pump is actuated via the intank fuel pump relay (K40/8kX, K27/5) directly by the ME-SFI [ME] control unit.

In case of model 230 up to 06/2002, the intank fuel pump is actuated via the intank fuel pump control unit (N118/1) from an engine speed of around 5000 rpm.