Purge control valve actuation function - GF07.61-P-3013F

ENGINE 104.941 /943 /944 /991 /994as of 1.8.96 

ENGINE 104.995 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998 with CODE (498) as of Model year 97 Japanese version 

ENGINE 111.921 /942 as of 1.9.98, 111.943, 111.944 as of 1.8.96, 111.946 as of 1.6.98, 111.947 /973, 111.975 as of 1.8.96 

ENGINE 111.945 in MODEL 208.335/435 as of 1.6.98, 202.020 /080 as of 1.9.98 

ENGINE 111.974 with CODE (494a) USA version with CODE (807) Model year 1997 with CODE (808) Model year 1998 

ENGINE 112.910 /911 /912 /913 /914 /916 /917 /920 /921 /922 /923 /940 /941 /942 /943 /944 /946 /947 /949 /953 /954 /955 /970 /972 /973 /975 

ENGINE 113.940 /941 /942 /943 /948 /960 /961 /963 /965 /966 /967 /968 /969 

ENGINE 119.980 /981 /982 /985 

ENGINE 120.982/ 983 

ENGINE 137.970 

Shown on engine 119 in model 129, 140 

For controlling the purge quantity the purge control valve is actuated at the ground side by the ME-SFI control unit by means of a pulse width-modulated signal. The purge quantity is determined by constantly opening and closing the purge control valve for on and off periods of various lengths.

The frequency of the pulse width modulation signal is selected from a speed-dependent characteristic in such a way, that all cylinders are uniformly supplied with fuel vapors.

The purge control valve is actuated when the engine is at operating temperature, but not in the deceleration mode.

The following information is processed in the ME-SFI control unit:

• Engine speed
• Air mass (boost pressure in supercharged engines)
• Coolant temperature
• Intake air temperature (charge air temperature in supercharged engines)

	Motor electronics control unit, location/task/design/function		GF07.61-P-5000F
	Coolant temperature sensor, location/task/design/function	Engine 119, 120	GF07.04-P-5026F
		Engine 104, 111	GF07.04-P-5026G
		Engine 112, 113, 137	GF07.04-P-5026A
	Purge control valve, location/task/design/function		GF47.30-P-4030L
	Hot film mass air flow sensor, location/task/design/function	Engine 119, 120 (round connector)	GF07.07-P-4118E
		Engine 104, 111, 112, 113, 137	GF07.07-P-4118G
	Crankshaft position sensor, location/task/design/function		GF07.04-P-4116F
	Intake air temperature sensor, location/task/design/function		GF07.04-P-2100F
	Voltage supply of ME-SFI control unit function		GF07.61-P-5001F