Switching valve and respective manufacturing method

Details Switching valve and respective manufacturing method Switching valve and respective manufacturing method

2007-02-21

2009-12-29

Fristoe, Jr., John K (Department: 3753)

Fluid handling

Processes

Cleaning, repairing, or assembling

C251S305000

Reexamination Certificate

active

07637278

ABSTRACT:
The present invention relates to a switching valve (1) for controlling a gas flow in a gas line of an internal combustion engine, in particular in a motor vehicle, comprising a line section (2) for installation in the gas line, an actuator drive (3) for rotational adjustment of a butterfly valve (11) about an axis of rotation (13) running across the direction of flow inside the line section (2). In the closed position of the butterfly valve (11) a throttle sealing gap (17) is formed radially between a butterfly valve edge (16) and a sealing surface (14) facing the butterfly valve (11) and belonging to a sealing section encompassing the butterfly valve (11) along the butterfly valve edge (16) in the circumferential direction.To simplify the manufacture of a high quality throttle sealing gap (17), the sealing section may be formed by a sealing body (15) which is manufactured separately from the other line section (2) and can be added directly onto the line section (2).

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