Abstract: An active carbon filter unit for a tank system consists of a housing (13) in which two chambers (31, 32) are formed, carrying an active carbon filling, which form a section of a flow path which at its one end leads via a valve (6) and an air filter (7) into the ambient atmosphere and at its other end leads via a valve (9) and a non-return valve (10) to a connection for producing an underpressure or into the suction region of an internal combustion engine and via a connection (17) into the tank system. The valves (6, 9), the non-return valve (10) and a housing part (27) receiving the electrical connections thereof are part of a uniform control module (15), which is exchangeably inserted into a recess (14) of the housing (13).

Abstract: An active carbon filter unit for a tank system consists of a housing (13) in which two chambers (31, 32) are formed, carrying an active carbon filling, which form a section of a flow path which at its one end leads via a valve (6) and an air filter (7) into the ambient atmosphere and at its other end leads via a valve (9) and a non-return valve (10) to a connection for producing an underpressure or into the suction region of an internal combustion engine and via a connection (17) into the tank system. The valves (6, 9), the non-return valve (10) and a housing part (27) receiving the electrical connections thereof are part of a uniform control module (15), which is exchangeably inserted into a recess (14) of the housing (13).

Abstract: A carbon canister filter box having an integrated cap. The integrated cap incorporates one or more components, such as vent solenoids, pressure sensors, an internal honeycomb feature for assisting in trapping hydrocarbons from the fuel vapor, and purge ports. The integrated cap sealingly attaches to a carbon canister vapor recovery system and can be manufactured to be implemented on existing canister units. The cap connects to the automotive emission storage canister in relation to the fuel tank of the vehicle, used to recapture fuel vapor before it is released into the atmosphere. A sealing means is positioned between the cap and the canister, preventing the leakage of fuel vapor into the outside atmosphere.

Abstract: A filter box having an integrated vent solenoid to connect to the atmospheric port of an automotive emission storage canister in relation to the fuel tank of the vehicle, used to recapture fuel vapor before it is released into the atmosphere. The filter box with integrated vent solenoid is sealed to the atmospheric port of the canister, and consists of a filter housing with an internal feature to house and retain a vent solenoid, an optional foam filter to protect the vent solenoid and the canister against dust, and a filter cap to retain the filter foam. A closed cell foam or rubber O-ring provides a sealing between the filter cap and the filter housing. A labyrinth-type filter means is integrated within the cap of the filter box assembly and provides for separation of the air and dust traveling through the filter box, and a further sealing means provides a leak tight seal between the filter box and the canister.