Siemens Aktiengesellschaft

Stefan Schmid

Peter Heinz Fischer

Werner Happenhofer

Mathias Scheytt

Carsten Espe

Helmut Schwaiger

Michael Lutz

A first sleeve and a second sleeve are put onto the shaft at a predetermined axial distance apart and are pressed radially. The shaft is encapsulated between the first and the second sleeve with a thermoplastic in such a way that a vane body, which has at least one aperture, is formed. The vane body is encapsulated with a sealing compound in such a way that a sealing lip is formed on the vane body at the margins.

Method of manufacturing a control flap

An air-intake device having a variable induction-pipe length for an internal combustion engine includes a cylindrical collector. Induction pipes extend from inlets on the collector along a periphery of the collector up to inlet ducts of an internal combustion engine. A switching device in the shape of a cylinder sector is pivotably mounted in the collector. In a first rotary position, the switching device closes lead-in ports which connect the induction pipes to the collector. Therefore, the switching device has elevations on its lateral surface. The elevations have a front surface and adjoining side walls together forming a first contact surface in a closing direction, and an end region opposite the front surface forming a second contact surface. The first and second contact surfaces have a seal and bear against first and second bearing surfaces of the lead-in ports in the first rotary position, for tightly closing the lead-in ports.

Air-intake device having variable induction-pipe length for an internal

Growing community of inventors

Obertraubling, Germany

Stefan Schmid