Rotary diesel electric EGR valve

Details Rotary diesel electric EGR valve Rotary diesel electric EGR valve

1995-03-31

1996-07-02

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

123569, 123571, 251306, F02M 2507

Patent

active

055312055

ABSTRACT:
An EGR valve is well-suited for use in a diesel engine by employing a butterfly-type valve operated by a torque motor. Sealing of the butterfly blade to the wall of the passage through the valve body utilizes a sealing ring that is mounted in a groove of the passage wall. The blade and the sealing ring are self-aligned at assembly, and the groove is cooperatively defined by two body segments that are fitted axially together to capture the sealing ring. Two additional rings are used between the sealing ring and the sides of the groove. In certain embodiments, the axis of the passage in the vicinity of the groove is straight; in others, it has a 45 degree offset so that portions of the axis to opposite sides of the groove are non-collinear.

REFERENCES:
patent: 3882837 (1975-05-01), Horie et al.
patent: 3916857 (1975-11-01), Naito et al.
patent: 4020809 (1977-05-01), Kern et al.
patent: 4290615 (1981-09-01), Etcheverry
patent: 4475524 (1984-10-01), Eckert et al.
patent: 4770393 (1988-09-01), Hubertson
patent: 4836500 (1989-06-01), Pupillo et al.
patent: 4924840 (1990-05-01), Wade
patent: 5388806 (1995-02-01), Kusmer et al.

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