Activated charcoal canister, component description - GF47.30-P-2010V

MODEL 203 with ENGINE 272.920 up to Model Year 8

MODEL 211 with ENGINE 272.922

MODEL 203 with ENGINE 272.940 up to Model Year 8

MODEL 203 with ENGINE 272.941 up to Model Year 8

MODEL 171 with ENGINE 272.942 up to Model Year 8

MODEL 211, 219 with ENGINE 272.943

MODEL 211 with ENGINE 272.944

MODEL 251 with ENGINE 272.945 up to Model Year 8

MODEL 221 with ENGINE 272.946 up to Model Year 8

MODEL 203 with ENGINE 272.960 up to Model Year 8

MODEL 171 with ENGINE 272.963 up to Model Year 8

MODEL 211, 219 with ENGINE 272.964

MODEL 221 with ENGINE 272.965 up to Model Year 8

MODEL 230 with ENGINE 272.966 up to Model Year 8

MODEL 164, 251 with ENGINE 272.967 up to Model Year 8

MODEL 203 with ENGINE 272.970 up to Model Year 8

MODEL 211 with ENGINE 272.972

MODEL 221 with ENGINE 272.975 up to Model Year 8

MODEL 211, 219 with ENGINE 272.985

MODEL 221 with ENGINE 273.922 up to Model Year 8

MODEL 164 with ENGINE 273.923 up to Model Year 8

MODEL 221 with ENGINE 273.924 up to Model Year 8

MODEL 211, 219 with ENGINE 273.960

MODEL 216, 221 with ENGINE 273.961 up to Model Year 8

MODEL 211 with ENGINE 273.962

MODEL 164, 251 with ENGINE 273.963 up to Model Year 8

MODEL 230 with ENGINE 273.965 up to Model Year 8

MODEL 209 with ENGINE 273.967

MODEL 221 with ENGINE 273.968 up to Model Year 8

MODEL 209 with ENGINE 272.940

MODEL 209 with ENGINE 272.960

Shows model 211

Location

Model 203, 209, 211, 219, 221,164, 251, 230: in rear right wheelhouse
Model 171: at frame floor under fuel tank.

Task

Temporarily storing fuel vapors
Ventilation and purging of fuel tank.

Fig 1: Identifying Activated Charcoal Canister
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Design

The activated charcoal canister consists of a plastic housing filled with activated charcoal granulates.

The activated charcoal canister is divided into various chambers by partitions to achieve an optimal flow of the activated charcoal granulates.

The activated charcoal canister is larger (contents approx. 3.5 liter, usually approx. 1.5 liter), filled with a different activated charcoal and equipped with the activated charcoal canister shutoff valve.

Function

The fuel vapors released from the fuel tank ( also when refueling) are bonded to the activated charcoal. When purging is activated, they are drawn in again by the engine and combusted. The activated charcoal is completely regenerated in the ideal case.

The ventilation of the fuel tank (under vacuum) and the deventilation of the fuel tank (at excess pressure) take place through the activated charcoal canister.

Shows model 171

Fig 2: Identifying Activated Charcoal Canister Components - Shows Model 171

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Design

Housing filled with activated charcoal granulate. Divided into different chambers by intermediate walls in order to achieve optimal flow through the activated charcoal.

with ORVR: Quantities of around 2.7 to 3.5 l

Function

The fuel vapors released from the fuel tank ( with ORVR or when refueling) are bonded to the activated charcoal. When purging is activated, they are drawn in again by the engine and combusted.

The activated charcoal is completely regenerated in the ideal case. The pressurization and depressurization of the fuel tank is performed via the activated charcoal canister.