Evaporative emission control system function - GF47.30-P-3013D

Models 124.022 /042 /062 /082 with engine 111.960 

Models 124.008 /028 /029 /088 with engine 104.942 

MODEL 124.032 /052 /066 /092 with ENGINE 104.992 

MODEL 129.058 up to 31.7.96 with ENGINE 104.943 

MODEL 129.063 up to 31.7.96 with ENGINE 104.991 

MODEL 140.028 up to 31.7.96 with ENGINE 104.944 

MODEL 140.032 /033 up to 31.7.96 with ENGINE 104.994 

MODEL 163.136 with ENGINE 111.977 

MODEL 168.031 /131 with ENGINE 166.940 

MODEL 168.031 with ENGINE 166.960 #2 

MODEL 168.032 /132 with ENGINE 166.990 

MODEL 168.033 /133 with ENGINE 166.960 

MODEL 168.035 /135 with ENGINE 166.995 

MODEL 170.435 up to 31.5.98 with ENGINE 111.946 

MODEL 202.020 /080 up to 31.8.98 with ENGINE 111.945 

Model 202.022 with engine 111.961 

MODEL 202.023 /083 with ENGINE 111.974 except CODE (491) as of Model Year 97 U.S. version 

MODEL 202.024 up to 31.7.96 with ENGINE 111.975 

MODEL 202.025 up to 31.7.96 with ENGINE 111.944 

MODEL 202.028 up to 31.7.96 with ENGINE 104.941 

except CODE (498) as of Model Year 97 Japanese version 

except CODE (491) as of Model Year 97 U.S. version 

MODEL 202.018 /078 up to 31.8.98 with ENGINE 111.921 

MODEL 208.335 up to 31.5.98 with ENGINE 111.945 

MODEL 210.035 /235 up to 31.8.98 with ENGINE 111.942 

Models 210.037 /237 with engine 111.970 

Models 210.053 with engine 104.945 

MODEL 210.055 with ENGINE 104.995 

except CODE (491) as of Model Year 97 U.S. version 

except CODE (498) as of Model Year 97 Japanese version 

The evaporative emission control system prevents fuel vapors escaping to atmosphere. This is done by storing the fuel vapors temporarily in the activated charcoal canister.

When the engine is running, the fuel vapors stored in the activated charcoal canister are drawn off through the purge control valve and combusted in the engine.

Purging of the activated charcoal canister takes place at:

- coolant temperature > 70 °C

- > 2 minutes after engine start

- engine not in deceleration mode

The purge control valve is actuated by the engine control module in order to control the purge quantity. The purge quantity is determined by constantly opening and closing the purge control valve for on and off periods of various lengths.

Air admission to fuel tank 

Air is admitted through the activated charcoal canister. This is done by air being drawn through the activated charcoal canister out of the air admission line, or fuel vapors drawn out of the activated charcoal canister into the fuel tank.

Air release from fuel tank 

The fuel tank is vented through the activated charcoal canister. In this case, the fuel vapors flow to the activated charcoal canister where they are stored, or if purging is activated at that moment, they are drawn off into the intake manifold.

On vehicles fitted with a vent valve the fuel tank is vented from a pressure of 30-50 mbar, and air admitted at a vacuum of 1-16 mbar.

	Connection diagram of evaporative emission control system	Model 124, 129, 140 without skibag engine 104, 111	AR47.30-P-8212-01DA
		Model 140 with skibag engine 104, 111	AR47.30-P-8212-01DB
		Model 170 with engine 111, model 210 with engine 104, 111	AR47.30-P-8212-01DE
		Model 202 engine 104, 111	AR47.30-P-8212-01DC
		Model 168 engine 166
	HFM-SFI control module, location/ task/ design/ function		GF07.51-P-4103D
	ECM control module, location/task/design/function	up to 08/01 (hot film mass air flow sensor and intake air temperature sensor integrated)	GF07.53-P-4103GC
		as of 09/01 (throttle valve actuator integrated)	GF07.53-P-4103GD
	Coolant temperature sensor, location/task/design/function	Engine 104/111 (B11/3)	GF07.04-P-5026GA
		Engine 104/111 (B11/4)	GF07.04-P-5026G
		Engine 166	GF07.04-P-5026A
	Purge control valve, location/task/design/function		GF47.30-P-4030L
	Vent valve, location/task/design/function