Magna Steyr Fuel Systems Gesmbh

Magna Steyr Fuel Systems Gesmgh

Stefan Feichtinger

Eduard Eggenreich

A closure cover for tanks under internal pressure, with a cover body () which can be fixed in a tank neck by rotation, and with a cover () which is provided with a handle () and is operatively connected to the cover body (), and with a pressure control valve (). A coupling device (-) is arranged between the cover body () and the cover () and, during the positive pressure which prevails in the fuel tank during normal operation, releases the rotational connection between the cover body () and the cover () such that the fuel tank cannot be opened, and in that a pressure control valve () is provided which opens when the positive pressure prevailing during normal operation is exceeded.

Closure cover for tanks under internal pressure, with a safety function, and closure cover for a fuel tank

A tank filler neck comprises an outer wall (), an inner wall () and an inner space () closed off from the environment during operation. In order to enable the pressure in this space () to be equalized in both directions, a negative and positive pressure relief valve () is provided in the annular space () between outer wall () and inner wall (). The valve comprises a partition () with holes () distributed over the circumference, said partition dividing the annular space () between outer wall () and inner wall () into a first annular space () connected to the atmosphere and a second annular space () connected to the inner space (), a first valve ring () in the first annular space () and a second valve ring () in the second annular space (), which valve rings have first zones () and second offset zones () alternating in the circumferential direction, see FIG.

Tank filler neck with a negative and positive pressure relief valve

The filler neck of a fuel tank with an arrangement for preventing incorrect fueling has a rotatable ring and closing elements which are actuated by said ring, with a transmission device having the following features being arranged between the movable part and the rotatable ring:

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Büchl, Austria

Stefan Feichtinger