ME fuel supply function - GF07.61-P-3004P
ENGINE 111.951 /955, 112.912 /916 /946 /953 in MODEL 203
ENGINE 112.913 /917 /949 /954, 113.967 /969 in MODEL 211
ENGINE 112.912 /955, 113.968 in MODEL 209
Shown in Model 203
Shown in Model 203
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 in the delivery module (88) draws the fuel out of the right chamber in the fuel tank (75) and pumps it through the fuel filter with integrated diaphragm pressure regulator (55/1) to the injectors connected to the rail (17) (single-line system).
The fuel in the left chamber is pumped along a connecting line with a suction spray pump to the right chamber.
The diaphragm pressure regulator regulates the fuel pressure to approx. 3.7 to 4.1 bar 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.
Too much delivered fuel flows from diaphragm pressure regulator back into the fuel tank (75).
The ventilation of the diaphragm pressure regulator in the fuel filter is performed on Model 203, 209 through a hose line (48). On Model 211, the fuel filter and diaphragm pressure regulator are mounted in the fuel tank.
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 | ||
| ME-SFI fuel pump actuation function | GF07.61-P-3012F | ||
| Fuel delivery module, location/task/design/function | Model 203, 209 | GF47.20-P-4101P | |
| 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 | ||
| Fuel gage sensor, location/task/design/function | Model 211 | GF47.10-P-3001KE | |
| Fuel tank, location/design/function | Model 203, 209 | GF47.10-P-3000P | |
| Model 211 | GF47.10-P-3000T |