Independent Metering Valves with Flow Sharing

摘要

A hydraulic system includes a source of pressurized fluid, a plurality of fluid actuators, each fluid actuator associated with an implement control system for hydraulically controlling the fluid actuator, and a load sense signal conditioning passageway fluidly connecting each of the implement control systems and configured to facilitate flow sharing between each of the implement control systems. Each of the fluid actuators includes a first chamber and a second chamber, and each of the implement control systems includes: a head-end IM supply valve configured to selectively fluidly connect the source with the first chamber; a rod-end IM supply valve configured to selectively fluidly connect the source with the second chamber; and a load compensating valve configured to control a pressure of a fluid directed between the source and the head-end IM supply and rod-end IM supply valves in response to a load acting on the fluid actuator.

主权项

1. A hydraulic system, comprising:
a source of pressurized fluid; a plurality of fluid actuators having a first chamber and a second chamber, each of the plurality of fluid actuators comprising an implement control system for hydraulically controlling the fluid actuator, each implement control system comprising:
a head-end independent metering (IM) supply valve configured to selectively fluidly connect the source with the first chamber;a rod-end IM supply valve configured to selectively fluidly connect the source with the second chamber; anda load compensating valve configured to control a pressure of a fluid directed between the source and the head-end IM supply and rod-end IM supply valves in response to a load acting on the fluid actuator; and a load sense signal conditioning passageway fluidly connecting each implement control system and configured to facilitate flow sharing between each implement control system.