Plug neck for a filler neck of a fuel tank
AssigneeMannesmann VDO AG
InventorsThomas Zapp, Frank Reiter
Life of this patent
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Abstract
A plug neck for a filler neck of a motor vehicle has exchanging means for refueling-venting adaptation to different refueling devices. In the case of a refueling device which removes gases from a refueling channel by suction, a compensation chamber is connected permanently to the refueling channel via a connecting channel. For adaptation to a refueling device without suction removal, the connecting channel is closed and the vent valve is provided with a cap which has a connection neck for a line leading to an activated carbon filter. This allows tool costs for producing the plug neck to be kept particularly low.
Claims7
A plug neck for a filler neck of a fuel tank of a motor vehicle, comprising:
- a flap arranged in a refueling channel such that it is movable during refueling and for switching a vent valve;
- a first compensation chamber connected to the vent valve for refueling venting;
- a second compensation chamber connected to the vent valve for operational venting;
- wherein the vent valve connects the second compensation chamber to the refueling channel during operation;
- and further comprising an exchanging means for alternate connection of the first compensation chamber via a switchover valve to a filter when used with a non-suction fueling device or the refueling channel when used with a suction refueling device for removing vapors.
Dependencies are inferred from the claim text.