Patent ID: 7044111
Filing Date: 2006-05-16
Classification: F02M,F16K

Abstract:
1. A purge valve for an evaporative emission control system, comprising: a housing disposed along a longitudinal axis, the housing including a first housing wall defining a first chamber; an actuator disposed in the first chamber, the actuator including: a valve body disposed proximate the housing, the valve body defining a first flow passage extending along the longitudinal axis; a valve closure member disposed in the valve body, the valve closure member including a pin extended along the longitudinal axis, a distal end of the pin is spaced from the armature by a lost motion distance, the valve closure member forms a seal with a valve seat, and the permanent magnet armature is magnetically attracted to the stator when the coil is unenergized; a second housing wall defining a second chamber, the armature being disposed in the second chamber: a cap, the cap including; a strap completing an electromagnetic circuit with the first end and a second end of the stator; an intermediate housing wall connecting a second end of the first housing wall with the second housing wall, the intermediate wall being disposed in a generally radial direction, the intermediate wall including a second protrusion contacting the strap proximate the second end of the stator; an annular spring washer proximate the first protrusion of the stator and biasing the actuator against the second protrusion of the intermediate housing wall to axially position the actuator in the housing; and a third protrusion formed on the strap, the third protrusion contacting the first housing wall to radially position the actuator in the housing.