ME fuel supply function - GF07.61-P-3004A
ENGINE 112.910 /911 /914 /920 /921 /922 /923 /940 /941 /942 /943 /944 /947 /970 /972 /973
ENGINE 113.940 /941 /942 /943 /960 /961 /963 /965
ENGINE 137.970
Shown on model 210
Model 230 shown with Engine 113
The fuel supply system must make available to the fuel injectors an adequate quantity of filtered fuel from the fuel tank, and at an adequate pressure (injection pressure), in all operating conditions.
Function
The fuel pump (M3) draws the fuel out of the fuel tank (75) and pumps it through the fuel filter with integrated diaphragm pressure regulator (55/1) to the injectors connected to the fuel rail (17) (single-line system).
The fuel pressure is controlled to approx. 3.7 to 4.1 bar by the diaphragm pressure regulator. The fuel pressure is controlled independently of the intake manifold pressure. When the throttle is depressed sharply, fuel supply is assured by means of the acceleration enrichment. The large-volume fuel rail prevents the formation of vapor bubbles.
Excess delivered fuel flows back unpressurized from the diaphragm pressure regulator in the fuel filter to the fuel tank (75).
Air is admitted to the diaphragm pressure regulator in the fuel filter by means of a hose line to the fuel evaporation control system.
The fuel injectors operated by the ME-SFI control unit, inject the fuel as a finely atomized spray into the intake passage.
| Motor electronics control unit, location/task/design/function | GF07.61-P-5000F | ||
| Fuel pump location/task/design/function | GF47.20-P-4003L | ||
| ME-SFI fuel pump actuation function | GF07.61-P-3012F | ||
| Fuel delivery module, location/task/design/function | Model 163 | GF47.20-P-4101GH | |
| Fuel filter with integrated fuel pressure regulator, location/task/design/function | Engine 112, 113, 137 | GF47.20-P-4100A | |
| ME fuel rail, location/task/design/function | GF07.61-P-3101A | ||
| Fuel injector, location/task/design/function | GF07.03-P-5004F | ||
| Fuel pump relay, location/task/design/function | GF54.15-P-4105L | ||
| Relay module position / task / design / function | Model 210 up to 2/97 Model 170 Fuel pump relay integrated |
GF54.10-P-4033K | |
| Voltage supply of ME-SFI control unit function | GF07.61-P-5001F | ||
| Fuel tank, location/design/function | Model 210 | GF47.10-P-3000B | |
| Model 202, 208 | GF47.10-P-3000E | ||
| Model 163 | GF47.10-P-3000GH | ||
| Model 215, 220 | GF47.10-P-3000K | ||
| Model 230 | GF47.10-P-3000R | ||
| On-board refueling vapor recovery function | Model 202, 203, 208, 209, 211, 230 Model 170 as of 9/00 Model 210.0 as of 6/01 Model 215, 220 as of 9/00 |
GF47.10-P-3004B | |
Model 129 Model 170 up to 8/00 Model 210.2 Model 210.0 up to 5/01 Model 215, 220 up to 8/00 |
GF47.10-P-3004A |