Invention Grant
- Patent Title: System and method for hydraulic energy recovery
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Application No.: US14936137Application Date: 2015-11-09
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Publication No.: US09932993B2Publication Date: 2018-04-03
- Inventor: Jiao Zhang , Dayao Chen , Jeremy T. Peterson , Michael L. Knussman
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Main IPC: F15B11/024
- IPC: F15B11/024 ; F15B11/08 ; F15B1/04 ; F15B1/26 ; F15B21/14 ; F15B1/027 ; F15B1/02 ; F15B13/02

Abstract:
A hydraulic control system for a machine is provided. The hydraulic control system includes a fluid reservoir, a pump motor and an accumulator. The pump motor is configured to provide pressurized fluid and to receive fluid to provide a power output. The hydraulic control system further includes a hydraulic actuator having a first and a second chamber, a first valve, a regenerative valve, and a controller. The controller is in communication with the first valve and the regenerative valve to selectively actuate the regenerative valve to allow flow of a first portion of the fluid from the first chamber to the second chamber. The controller is further configured to selectively actuate the first valve to allow flow of a second portion of the fluid from the first chamber through the pump motor to provide the power output to a shaft of a power source.
Public/Granted literature
- US20170130744A1 SYSTEM AND METHOD FOR HYDRAULIC ENERGY RECOVERY Public/Granted day:2017-05-11
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