Invention Grant
- Patent Title: Boom cylinder dig flow regeneration
- Patent Title (中): 动臂缸挖流再生
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Application No.: US14155587Application Date: 2014-01-15
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Publication No.: US09261118B2Publication Date: 2016-02-16
- Inventor: Jiao Zhang , Pengfei Ma , Vickram Murugesan , Tonglin Shang , Bryan Jacob Hillman
- Applicant: Caterpillar, Inc.
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Miller, Matthias & Hull LLP
- Agent M. Daniel Spillman
- Main IPC: F16B21/14
- IPC: F16B21/14 ; E02F3/43 ; F15B21/14 ; E02F9/22

Abstract:
A hydraulic system and methods for conserving energy in such system is disclosed. The hydraulic system includes a hydraulic actuator having a head end, a rod end and a piston disposed therebetween. The system also includes a pump that pumps fluid to the actuator, a first valve disposed downstream of the rod end, and a second valve disposed between the pump and the head end of the actuator. When the system is in a load overrunning condition, the second valve is partially closed to restrict the flow of a combined fluid. The combined fluid including fluid received from the pump and fluid received from the rod end of the actuator. When the system is in the light resistive load condition, the second valve is open to allow the combined fluid to flow through the second valve.
Public/Granted literature
- US20150197915A1 Boom Cylinder Dig Flow Regeneration Public/Granted day:2015-07-16
Information query
IPC分类: