Force balanced EGR valve with position feedback

Details Force balanced EGR valve with position feedback Force balanced EGR valve with position feedback

1985-05-30

1987-05-05

Green, Randall L.

Valves and valve actuation

Electrically actuated valve

Balanced valve

25112917, 251282, 123568, 123571, F16K 3104, F16K 3900

Patent

active

046626042

ABSTRACT:
An EGR valve for an engine comprising: a housing including a plurality of passages for communicating exhaust gas and engine vacuum thereto, for supporting a movable diaphragm-piston assembly, a diaphragm-piston assembly for dividing the housing into an atmospheric chamber and a vacuum chamber, including a user cleanable, outwardly movable valve closure element for selectively sealing one of said passages and means for sensing the position of the assembly.

REFERENCES:
patent: 2197352 (1940-04-01), Terkel
patent: 3336940 (1967-08-01), Fitzpatrick
patent: 4122810 (1978-10-01), Berriman
patent: 4256076 (1981-03-01), Bradshaw
patent: 4300515 (1981-11-01), Straubel et al.
patent: 4333440 (1982-06-01), Eheim
patent: 4342331 (1982-08-01), Bartholomaus et al.
patent: 4366799 (1983-01-01), Suda
patent: 4442820 (1984-04-01), Ina et al.

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