Invention Grant
- Patent Title: Hydraulic control system having swing motor energy recovery
- Patent Title (中): 具有摆动电机能量回收的液压控制系统
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Application No.: US13171110Application Date: 2011-06-28
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Publication No.: US08850806B2Publication Date: 2014-10-07
- Inventor: Jiao Zhang , Tonglin Shang , Peter Spring , Pengfei Ma , Randal N. Peterson
- Applicant: Jiao Zhang , Tonglin Shang , Peter Spring , Pengfei Ma , Randal N. Peterson
- 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: F16D31/02
- IPC: F16D31/02 ; F16D31/00 ; F16D33/00 ; F16D37/00 ; F15B1/02 ; F15B21/14 ; E02F9/20 ; E02F9/22 ; E02F9/12

Abstract:
A hydraulic control system for a machine is disclosed. The hydraulic control system may have a work tool movable through segments of an excavation cycle, a motor configured to swing the work tool during the excavation cycle, at least one accumulator configured to selectively receive fluid discharged from the motor and to discharge fluid to the motor during the excavation cycle, and a controller. The controller may be configured to receive input regarding a current excavation cycle of the work tool, and make a determination based on the input that the current excavation cycle is associated with one of a set of known modes of operation. The controller may be further configured to cause the at least one accumulator to receive fluid and discharge fluid during different segments of the excavation cycle based on the determination.
Public/Granted literature
- US20130004280A1 HYDRAULIC CONTROL SYSTEM HAVING SWING MOTOR ENERGY RECOVERY Public/Granted day:2013-01-03
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