Bearing porosity control in an exhaust gas recirculation valve

Details Bearing porosity control in an exhaust gas recirculation valve Bearing porosity control in an exhaust gas recirculation valve

2005-06-14

2005-06-14

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C123S568210, C251S129150

Reexamination Certificate

active

06904897

ABSTRACT:
A powdered metal bearing (40) that guides a pintle (42) in an EGR valve (20) is sealed against infiltration of exhaust gases by mechanical processing or by applying a sealant.

REFERENCES:
patent: 4044737 (1977-08-01), Nishimura
patent: 4898393 (1990-02-01), Rollins
patent: 5052363 (1991-10-01), Stiles
patent: 6053473 (2000-04-01), Shinobu et al.
patent: 6135415 (2000-10-01), Kloda et al.

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