Evaporative Emission Control Canister: Description and Operation

GF47.30-P-2010SM Component Description Of Activated Charcoal Canister
- MODEL 171 with ENGINE 113.989 up to Model Year 8
- MODEL 203 with ENGINE 113.988 up to Model Year 8
- MODEL 209 with ENGINE 113.987
- MODEL 215 with ENGINE 113.986 MODEL 220 with ENGINE 113.986





Type 171
77 Activated charcoal canister

The activated charcoal canister is located on the vehicle underfloor, right behind the rear axle.





Model 203, 209
77 Activated charcoal canister





Model 215, 220
77 Activated charcoal canister

The activated charcoal canister is located in the rear left wheelhouse.

Task
- Temporary storage of fuel vapors (for subsequent regeneration)
- Ventilation and purging of the fuel tank

Design
The activated charcoal canister consists of a plastic housing filled with activated charcoal granulates.
It is subdivided in different chambers by means of partitions, in order to achieve an optimal flow of the activated charcoal granulates.

Function
Fuel vapors to be released from the fuel tanks are combined with the activated charcoal granules.
Fuel vapors (United States of America) that have collected at the time of refueling are also combined with the activated charcoal granules.
When regeneration is activated, the fuel vapors are drawn in by the engine and combusted.
The activated charcoal granulates are completely regenerated in the ideal case.

Ventilation of the fuel tank (in the event of a vacuum) and purging of the fuel tank (in the event of an overpressure) is carried out via the activated charcoal canister.