Hydraulic drive system

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

Patent

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Details

F15B 9/00 (2006.01) F15B 1/02 (2006.01)

Patent

CA 2588290

A hydraulic drive system for an actuator uses a pair of pressure compensated hydraulic machines to control flow to and from the drive chambers of the actuator by varying the controlled pressure of one of the machines. The machines are mechanically coupled to permit energy recovery and charge an accumulator to store supplies energy. The drive system may be combined with other services including a transmission for incorporation in a vehicle. The transmission uses a pressure compensated supply and torque control of the wheels.

L'invention concerne un système d'entraînement hydraulique destiné à une commande et mettant en oeuvre deux machines hydrauliques à compensation de pression afin de commander l'écoulement vers les chambres d'entraînement de la commande et à partir de celles-ci, par variation de la pression commandée d'une des machines. Celles-ci sont couplées de manière mécanique afin de pouvoir récupérer de l'énergie et de charger un accumulateur, aux fins de stockage de l'énergie d'alimentation. Le système d'entraînement peut être combiné avec d'autres services, notamment une transmission destinée à être incorporée dans un véhicule. La transmission met en oeuvre une commande d'alimentation et de couple à compensation de pression des roues.

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