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 

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 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