Invention Grant
- Patent Title: Hydraulic control system having energy recovery
- Patent Title (中): 具有能量回收的液压控制系统
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Application No.: US12968975Application Date: 2010-12-15
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Publication No.: US08726645B2Publication Date: 2014-05-20
- Inventor: Tonglin Shang , Jiao Zhang , Pengfel Ma
- Applicant: Tonglin Shang , Jiao Zhang , Pengfel Ma
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Main IPC: F15B21/14
- IPC: F15B21/14

Abstract:
A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, a swing motor configured to receive the pressurized fluid and swing a body of the machine relative to an undercarriage, and a tool actuator configured to receive the pressurized fluid and move a tool relative to the body. The hydraulic control system may also have an energy recovery device configured to convert hydraulic energy to mechanical energy, a first accumulator configured to store waste fluid received from the swing motor, and a second accumulator configured to store waste fluid received from the tool actuator. Stored waste fluid from at least one of the first and second accumulators may be selectively discharged into the energy recovery device.
Public/Granted literature
- US20120151904A1 HYDRAULIC CONTROL SYSTEM HAVING ENERGY RECOVERY Public/Granted day:2012-06-21
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