Valves and valve actuation – Electrically actuated valve – Balanced valve
Patent
1988-09-22
1989-08-22
Michalsky, Gerald A.
Valves and valve actuation
Electrically actuated valve
Balanced valve
25112916, 25112918, F16K 3106
Patent
active
048589560
ABSTRACT:
A high pressure, fast response, pressure balanced reversible flow, solenoid control valve for use in such automotiove applications as electronic valve timing for internal combustion engines and adaptive braking systems. A pressure balanced bearing is connected to a moveable valve member forming a valve cavity therebetween which is at a first pressure. The moveable valve member is also connected to an armature means on the other side of the pressure balanced bearing in an armature cavity. The pressure on the opposite side of the valve member and in the armature cavity is at a second pressure. Thus, the moveable valve member is maintained in a pressure balanced condition and the solenoid then operates against any spring forces, inertia and the viscous effects of the fluid and not the pressure of the fluid. As the solenoid is energized, the armature moves the pressure balance bearing and the valve member to open the valve allowing fluid to flow from a valve inlet to the valve outlet. The control valve may be used in control systems where the fluid flow can be reversible.
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Michalsky Gerald A.
Siemens-Bendix Automotive Electronics L.P.
Wells Russel C.
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