ME-SFI start quantity control function - GF07.61-P-3010KE

ENGINE 271.921 in MODEL 203 

ENGINE 271.940 in MODEL 203, 209 

ENGINE 271.941 in MODEL 211 

ENGINE 271.944 in MODEL 171 

ENGINE 271.946 in MODEL 203 

ENGINE 271.948 in MODEL 203 

ENGINE 271.955 in MODEL 209 

ENGINE 271.956 in MODEL 211 

In order to facilitate starting of a cold engine, fuel must also be injected during the starting procedure depending on the coolant temperature.

The increased injection quantity (start quantity) is achieved by extending the injection time.

The start quantity is dependent on:

• Coolant temperature
• Engine speed
• Engine off time

The start quantity control is enabled after start recognition. It remains activated until a temperature-related engine speed is exceeded.

The higher the coolant temperature, the lower is the start quantity enable by the ME-SFI control unit.

The quantity of fuel injected is determined by the opening times of the fuel injection valves. The opening times are dependent on the battery voltage. The ME control unit requests the opening times in order to be able to achieve the start quantity for a lower battery voltage.

No further engine start is possible below approx. 7 V.

	Component description for fuel injection valves	Y62	GF07.03-P-6010KE
	Component description for the crankshaft position sensor	L5	GF07.04-P-6010KE
	Component description for the coolant temperature sensor	B11/4	GF07.04-P-6040KE
	Component description for the ME control unit	N3/10	GF07.61-P-6000KE
	Component description for the throttle valve actuator	M16/6	GF30.20-P-2020KE