EGR system having fast-acting EGR valve

Details EGR system having fast-acting EGR valve EGR system having fast-acting EGR valve

1994-03-31

1995-07-25

Wolfe, Willis R.

Valves and valve actuation

Electrically actuated valve

Including solenoid

F02M 2507, F16K 3106

Patent

active

054355192

ABSTRACT:
The magnetic circuit has an air gap on the interior of the bobbin-mounted coil. A non-ferromagnetic cylindrical sleeve lines the interior of the coil. The armature is disposed within the sleeve and has a cylindrical wall with an axial taper proximate the air gap. The sleeve extends to seal against a bushing that guides a portion of the valve member between the solenoid and the valve head so that any exhaust gases that infiltrate through the bushing to the solenoid are confined within the sleeve.

REFERENCES:
patent: 4518938 (1985-05-01), Bartholomaus et al.
patent: 5056556 (1991-10-01), Nishimoto et al.
patent: 5144272 (1992-09-01), Nishimura
patent: 5217200 (1993-06-01), Hutchings et al.
patent: 5218999 (1993-06-01), Tanimoto
patent: 5302930 (1994-04-01), Brehm et al.
patent: 5307991 (1994-05-01), Hanson et al.
patent: 5328151 (1994-07-01), Hashida
patent: 5346176 (1994-09-01), Fujimoto et al.

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