Invention Grant
- Patent Title: Energy recovery hydraulic system
- Patent Title (中): 能量回收液压系统
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Application No.: US13693509Application Date: 2012-12-04
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Publication No.: US09086061B2Publication Date: 2015-07-21
- Inventor: Jiao Zhang , Gang Wen , Pengfei Ma , Tonglin Shang , Dayao Chen , Bryan J. Hillman , Vickram Murugesan
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Leydig Voit & Mayer, Ltd.
- Main IPC: F15B21/14
- IPC: F15B21/14 ; F04B7/02 ; F04B49/00 ; F15B1/02

Abstract:
A method and system for accumulating and using recovered hydraulic energy that includes a hydraulic actuator and a pump configured to supply pressurized fluid to the hydraulic actuator. An energy recovery system includes a hydraulic motor, a charge valve and an accumulator configured to store fluid from the hydraulic actuator. The charge valve is operatively connected between the hydraulic actuator and the accumulator and between the accumulator and the hydraulic motor and is configured to place the hydraulic actuator in fluid communication with the accumulator and to place the accumulator in fluid communication with the hydraulic motor. A directional valve is operatively connected between the pump and the hydraulic actuator. The directional valve is configured to place the pump in fluid communication with the hydraulic actuator and to direct the flow of hydraulic fluid exiting the hydraulic actuator to the charge valve in an energy recovery mode.
Public/Granted literature
- US20140150415A1 Energy Recovery Hydraulic System Public/Granted day:2014-06-05
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