- Patent Title: Independent metering valve priority in open center hydraulic system
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Application No.: US14713737Application Date: 2015-05-15
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Publication No.: US10001147B2Publication Date: 2018-06-19
- Inventor: Andrew J. Kleitsch
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Deerfield
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Deerfield
- Agency: Baker Hostetler
- Agent William R. Tinker
- Main IPC: F15B11/16
- IPC: F15B11/16

Abstract:
An IMV circuit includes a set of IMVs, an IMV resolver, an on/off bypass valve, and a bypass valve. The set of IMVs is fluidly coupled to an actuator to independently control a flow of a hydraulic fluid to the actuator. The IMV resolver is configured to receive a first pressure signal and a second pressure signal and output a third pressure signal. The on/off bypass valve is configured to control the flow of the hydraulic fluid to the set of IMVs in response to the third pressure signal. The bypass valve is fluidly coupled to a hydraulic fluid supply conduit downstream of an IMV circuit supply. The bypass valve is fluidly coupled to the IMV resolver and is configured to reduce the flow of hydraulic fluid through the hydraulic fluid supply conduit in response to an increase in pressure in the third pressure signal.
Public/Granted literature
- US20160333897A1 INDEPENDENT METERING VALVE PRIORITY IN OPEN CENTER HYDRAULIC SYSTEM Public/Granted day:2016-11-17
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