Valves and valve actuation – Electrically actuated valve – Including solenoid
Patent
1998-11-19
2000-05-02
Lee, Kevin
Valves and valve actuation
Electrically actuated valve
Including solenoid
25112915, 25112921, F16K 3102
Patent
active
060562641
ABSTRACT:
A solenoid actuated valve assembly is provided which achieves accurate control of valve movement while maximizing valve seat life. Specifically, the solenoid actuated flow control valve assembly includes a valve plunger, a solenoid actuator including a coil and an armature, and an armature overtravel feature for permitting continued movement of the armature relative to the valve plunger from an engaged position into a disengaged position when the valve plunger reaches a closed position. The armature overtravel feature includes an overtravel biasing spring for returning the armature from the disengaged position to the engaged position prior to subsequent energization of the actuator coil. As a result, the overtravel feature minimizes the mass impacting the valve seat thereby extending valve seat life while, importantly, avoiding lost motion in the armature during the next actuation cycle thereby minimizing valve response time. The flow control valve also includes an armature protecting feature for minimizing armature wear by preventing the armature from contacting the valve plunger and an armature stop.
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Benson Donald J.
Buchanan David L.
Bunker Byron J.
Tikk Laszlo D.
Brackett Jr. Tim L.
Cummins Engine Company, Inc.
Lee Kevin
Leedom Jr. Charles M.
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