Part description of activated charcoal canister - GF47.30-P-2010BK

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MODEL 219 with ENGINE 113.967

MODEL 164.1 with ENGINE 113.964

MODEL 251 with ENGINE 113.971

Shows model 219

Fig 1: Identifying Activated Charcoal Canister

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

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

Task

Temporarily storing fuel vapors
Ventilation and purging of fuel tank.

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 liters, otherwise approx. 1.5 liters) and filled with a different activated charcoal and fitted with the activated charcoal canister shutoff valve.

Function

The fuel vapors released from the fuel tank ( even 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 de-ventilation of the fuel tank (at excess pressure) take place through the activated charcoal canister.