Force emission control valve

Details Force emission control valve Force emission control valve

2005-01-25

2005-01-25

Wolfe, Willis R. (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

C335S219000, C335S255000, C335S261000, C251S129150

Reexamination Certificate

active

06845762

ABSTRACT:
An automotive emission control valve, an EGR valve in particular, has a solenoid as the actuator for a valve element. The solenoid has a stator and an armature. Various features in construction of the armature and stator pole pieces improve magnetic efficiency to provide increased armature force per unit of solenoid current.

REFERENCES:
patent: 5435519 (1995-07-01), Everingham
patent: 5460146 (1995-10-01), Frankenberg
patent: 5669364 (1997-09-01), Everingham
patent: 5687698 (1997-11-01), Mastro et al.
patent: 5779220 (1998-07-01), Nehl et al.
patent: 5957117 (1999-09-01), Everingham
patent: 6062536 (2000-05-01), Bircann
patent: 6247461 (2001-06-01), Smith et al.

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