Linear EGR tri-bearing

Details Linear EGR tri-bearing Linear EGR tri-bearing

1991-12-06

1992-07-14

Schwadron, Martin P.

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

251324, 384 16, 384138, 277 53, 123571, F16K 3144, F16K 4100

Patent

active

051296233

ABSTRACT:
An exhaust gas recirculation valve assembly for controlling the recirculation of exhaust gas in an internal combustion engine having a base with an exhaust gas chamber formed therein, a valve assembly having a valve member mounted within the exhaust gas chamber for metering the flow of exhaust gas therethrough, and a valve stem extending out of the chamber through an opening therein, a one piece bearing having upper, intermediate, and lower bearing members for precise positioning of the valve member within the exhaust gas chamber, and a valve stem support assembly for mounting the valve stem relative to an actuator. The intermediate and upper bearing portions operate to deflect exhaust gas, escaping from the exhaust gas chamber and traveling along the valve stem of the valve member, from impinging on the actuator.

REFERENCES:
patent: 2448717 (1948-09-01), Jeffcock
patent: 4262690 (1981-04-01), Binegar
patent: 4725040 (1988-02-01), Fornuto et al.
patent: 4773440 (1988-09-01), Yanagawa et al.
patent: 4782811 (1988-11-01), Hewette et al.
patent: 4881829 (1989-11-01), Koelsch
patent: 5064204 (1991-11-01), Jarvinen et al.

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