Valves and valve actuation – Fluid actuated or retarded – Pilot or servo type motor
Patent
1990-06-07
1991-12-03
Rosenthal, Arnold
Valves and valve actuation
Fluid actuated or retarded
Pilot or servo type motor
25112908, 1374545, F16K 3140
Patent
active
050694200
ABSTRACT:
A two-stage, proportional pressure control valve is disclosed which may be used for uni-directional fluid flow. A poppet is movably positioned within a body of the valve. Pressure forces acting on the poppet affect the position of the poppet and thus the magnitude of fluid flow through the valve. A control pressure chamber is defined by the poppet and an orifice plate. The orifice plate includes an passage which may be blocked by an armature. An electromagnetic driver produces a magnetic flux path that is substantially proportional to a variable input current. The electromagnetic driver is operable to move the armature and thereby allow fluid in the control pressure chamber to exit through the passage. The proportional pressure control valve can be incorporated into a damper of a vehicle suspension system where the input current is governed by an electronic control unit of the vehicle. The electronic control unit may be responsive, in part, to the position of the suspension system through the use of a position feedback sensor.
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Patel Kishor J.
Stobbs Thomas J.
Applied Power Inc.
Rosenthal Arnold
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