Hydraulic system having a post-pressure compensator

Details Hydraulic system having a post-pressure compensator Hydraulic system having a post-pressure compensator

2007-12-04

2007-12-04

Lazo, Thomas E. (Department: 3745)

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

C091S447000, C091S464000

Reexamination Certificate

active

11139689

ABSTRACT:
A hydraulic system for a work machine is disclosed. The hydraulic system has a reservoir configured to hold a supply of fluid and a source configured to pressurize the fluid. The hydraulic system also has a fluid actuator, a first valve, and a second valve. The first valve is configured to selectively fluidly communicate the source with the fluid actuator to facilitate movement of the fluid actuator in a first direction. The second valve is configured to selectively fluidly communicate the fluid actuator with the reservoir to facilitate movement of the fluid actuator in the first direction. The hydraulic system further has a proportional pressure compensating valve configured to control a pressure of a fluid directed between the fluid actuator and the reservoir.

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