Bearing module for an exhaust gas recirculation valve

Details Bearing module for an exhaust gas recirculation valve Bearing module for an exhaust gas recirculation valve

2007-01-09

2007-01-09

Yu, Justine (Department: 3751)

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

C251S213000, C123S568210

Reexamination Certificate

active

10956456

ABSTRACT:
A bearing module for a pintle valve including a pintle bearing, bearing spring, and two-part housing. The bearing has an axial face for sealing against an inner axial surface of the housing. The bearing diameter is less than the diameter of the housing, permitting the bearing to float radially. The housing fits into a port in the valve body and also extends over an axial surface of the body, thus forming a seal against the wall of the port and the surface of the body. The bearing spring, preferably a wave washer, is compressed within the housing as the two housing parts are assembled to form the module. In a currently preferred embodiment, the housing further comprises a coking shield extending along the surface of the pintle shaft within the valve port to reduce the tendency for coking gases to enter the bearing module.

REFERENCES:
patent: 3565496 (1971-02-01), Latussek
patent: 6497226 (2002-12-01), Bircann et al.
patent: 6543746 (2003-04-01), Bircann et al.
patent: 6634346 (2003-10-01), Bircann et al.

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