Invention Grant
- Patent Title: Hydraulic system and method for controlling valve phasing
- Patent Title (中): 液压系统及其控制方法
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Application No.: US12422893Application Date: 2009-04-13
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Publication No.: US08226370B2Publication Date: 2012-07-24
- Inventor: Duqiang Wu , G. Clark Fortune , Aaron H. Jagoda , John Ryan Kess , Thomas J. Stoltz , Paul Brenner , Benjamin Morris
- Applicant: Duqiang Wu , G. Clark Fortune , Aaron H. Jagoda , John Ryan Kess , Thomas J. Stoltz , Paul Brenner , Benjamin Morris
- Applicant Address: US OH Cleveland
- Assignee: Eaton Corporation
- Current Assignee: Eaton Corporation
- Current Assignee Address: US OH Cleveland
- Agency: Rader, Fishman & Grauer PLLC
- Main IPC: F04B49/00
- IPC: F04B49/00

Abstract:
An exemplary hydraulic system includes a first digital valve fluidly connectable to a first hydraulic load and a pump. The first valve is operable to fluidly connect the first hydraulic load to the pump. A second digital valve is fluidly connectable to a second hydraulic load and the pump. The second valve is operable to fluidly connect the second hydraulic load to the pump. The system includes a first sensor for detecting a pump discharge pressure and a second sensor for detecting an inlet pressure of the first hydraulic load. A controller is configured to determine a time delay based on the pump discharge pressure and the first hydraulic load inlet pressure and to send a control signal instructing the second valve to commence opening at a time substantially equal to the time delay after commencing closing the first valve.
Public/Granted literature
- US20090257891A1 HYDRAULIC SYSTEM AND METHOD FOR CONTROLLING VALVE PHASING Public/Granted day:2009-10-15
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