Control system for superhigh pressure generation circuit

Details Control system for superhigh pressure generation circuit Control system for superhigh pressure generation circuit

F - Mech Eng,Light,Heat,Weapons

04

B

341/39

F04B 49/06 (2006.01) B21B 37/62 (2006.01) F04B 49/00 (2006.01) G05D 16/00 (2006.01)

Patent

CA 1175126

Abstract of the Disclosure A control system for a superhigh pressure generation circuit includes a hydraulic pump having a usual range of delivery pressure. An electrohydraulic servo valve controls the flow rate of pressurized fluid from the pump and supplies it to a primary side of a boost cylinder. A stepped piston slidably received in the boost cylinder strokes in response to the input fluid to generate a fluid pressure elevated in accordance with an effective sectional area ratio of the stepped piston in a secondary side of the boost cylinder. The fluid pressure in the secondary side is caused to coincide accurately with a reference pressure level on the basis of a feedback control.

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