| GF07.61-P-3004A | ME fuel supply function | 13.10.96 |
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| Shown on model 210
17 Fuel rail 51 Pressure gauge connection 55/1 Fuel filter with integrated diaphragm pressure regulator 75 Fuel tank B4 Fuel gage sensor B4/3 Fuel tank pressure sensor 
M3 Fuel pump (FP) Y62 Injectors (LH-SFI, HFM-SFI, PEC [LH, HFM, PMS]) A To activated charcoal canister B Air admission line for diaphragm pressure regulator |
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| P07.61-0518-06 |
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| P07.61-2583-09 |
| Model 230 shown with Engine 113
17 Fuel rail 45 Filler neck 55/1 Fuel filter with integrated diaphragm pressure regulator 75 Fuel tank 77 Activated charcoal canister 92 Fuel pressure line to engine |
93 Purge line M3 Fuel pump (FP) Y58/1 Purge control valve Y62 Injectors (LH-SFI, HFM-SFI, PEC [LH, HFM, PMS]) |
| 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 filter with integrated fuel pressure regulator, location/task/design/function | Engine 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 | ||
| Voltage supply of ME-SFI control unit function | GF07.61-P-5001F | ||
| Fuel tank, location/design/function | GF47.10-P-3000K | ||
| On-board refueling vapor recovery function | as of 9/00
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GF47.10-P-3004B | |
| up to 8/00 | GF47.10-P-3004A |