Control system for hydraulic circuit

F - Mech Eng,Light,Heat,Weapons – 15 – B

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F15B 11/02 (2006.01) E02F 9/22 (2006.01) F15B 11/16 (2006.01) F15B 11/17 (2006.01) E02F 3/96 (2006.01)

Patent

CA 2419288

A fluid pressure circuit control system, wherein the hydraulic oil fed from pumps (12) and (13) to an attachment actuator (60) is controlled by attachment control valves (27) and (28), the hydraulic oil fed from the pumps (12) and (13) to the other actuators (52), (54), (56), and (58) is controlled by the other control valves (21) to (26), the control conditions when the attachment actuator (60) is operated independently and the attachment actuator (60) and the other actuators (52), (54), (56), and (58) are operated interlockingly with each other are identified by the pilot pressure sensors (32), (34), (36), and (38) and, according to the identified control conditions, the control characteristics of the attachment control valves (27) and (28) are controlled by a controller (43).

Système de régulation de circuit de pression de fluide, dans lequel l'huile hydraulique refoulée par des pompes (12 et 13) vers un actionneur d'attache (60) est régulée par des valves de régulation d'attache (27 et 28). L'huile hydraulique refoulée par les pompes (12 et 13) vers les autres actionneurs (52, 54, 56, 58) est régulée par les autres valves de régulation (21 à 26). Les conditions de régulation lorsque l'actionneur d'attache (60) fonctionne de manière indépendante et lorsque l'actionneur d'attache (60) et les autres actionneurs (52, 54, 56, 58) fonctionnent de manière imbriquée sont identifiées par les capteurs (32, 34, 36, 38) de pression pilote et en fonction des conditions de régulation identifiées, les caractéristiques de régulation des valves de régulation d'attache (27 et 28) sont régulées par un dispositif de régulation (43).

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