Dual pump dual pressure hydraulic circuit

Details Dual pump dual pressure hydraulic circuit Dual pump dual pressure hydraulic circuit

F - Mech Eng,Light,Heat,Weapons

15

B

F15B 7/06 (2006.01) A01B 76/00 (2006.01) B60K 17/10 (2006.01) F15B 1/26 (2006.01) F15B 21/00 (2006.01) F16H 39/00 (2006.01) F16H 45/00 (2006.01)

Patent

CA 2566115

A hydraulic system is provided for an engine driven vehicle. The hydraulic system includes a higher pressure engine driven pump for supplying pressurized fluid to a higher pressure circuit via a first supply line. The system also includes a lower pressure engine driven pump for supplying lower pressure fluid to a lower pressure circuit via a second supply line. The system also includes a pressure responsive relief valve. The relief valve has a sensing port connected to the first supply line, an inlet connected to the first supply line, and an outlet connected to the second circuit via the second supply line. The relief valve opens when a demand of the higher pressure circuit is satisfied. A cut-off valve controls communication between the high pressure circuit and a reservoir, and a control unit controls the cut--off valve as a function of operation of the high pressure circuit.

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