Electro-hydraulic control system

Details Electro-hydraulic control system Electro-hydraulic control system

F - Mech Eng,Light,Heat,Weapons

15

B

138/78

F15B 9/17 (2006.01) F16H 61/4192 (2010.01) F16H 61/02 (2006.01)

Patent

CA 1175732

ELECTRO-HYDRAULIC CONTROL SYSTEM Abstract of the Disclosure An electro-hydraulic control system includes a plurality of two-position control valves, each controlling fluid flow into and out of a corresponding one of a plurality of hydraulic functions. First and second pressure responsive servo actuators associated with each control valve operate to move each control valve to first and second positions, respectively. A two-position, solenoid-operated, pilot valve controls fluid flow into and out of a pilot circuit. The pilot circuit communicates fluid to and from the second servo actuator of each control valve and to and from a plurality of two-position, solenoid-operated, pilot valves. Each pilot valve controls fluid flow into and out of the first servo actuator of a corresponding one of the control valves. A detent mechanism holds each control valve in either its first or its second position in the absence of fluid pressure in the servo actuators. A particular hydraulic function may be actuated by momentary energization of particular solenoids of the reset and/or the pilot valves.

388801

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