发明公开
EP0585107A1 Steering control valve with contoured control surfaces
失效
Steuerventil mit gekerbtenSteuerflächenfüreine Lenkung。
- 专利标题： Steering control valve with contoured control surfaces
- 专利标题（中）： Steuerventil mit gekerbtenSteuerflächenfüreine Lenkung。
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申请号： EP93306706.8申请日： 1993-08-24
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公开(公告)号： EP0585107A1公开(公告)日： 1994-03-02
- 发明人: Harpole, George M. , Behrens, Herman W. , Wolff, Michael F. , Lin, Jane Ming-Chin
- 申请人： TRW INC.
- 申请人地址： 1900 Richmond Road Lyndhurst Ohio 44124 US
- 专利权人： TRW INC.
- 当前专利权人： TRW INC.
- 当前专利权人地址： 1900 Richmond Road Lyndhurst Ohio 44124 US
- 代理机构： Walters, Frederick James
- 优先权： US936135 19920827
- 主分类号： B62D5/083
- IPC分类号： B62D5/083
摘要：
A valve for controlling flow of hydraulic fluid. The valve includes a valve sleeve (82) and a valve core (80). The core (80) is disposed within the sleeve (82). The core (80) and sleeve (82) are relatively rotatable. Each of said core (80) and sleeve (82) has an axially extending land (192,220) and an axially extending groove (110,122).
The core (80) and sleeve (82) have relative rotational positions such that the lands (192,220) overlap to define a flow gap for flow of hydraulic fluid from the groove (110) in the sleeve (82) to the groove (122) in the core (80). The flow gap has a minimum cross-sectional flow area adjacent to the groove (122) in the core (80). The minimum cross-sectional flow area constantly varies as the core (80) and sleeve (82) relatively rotate. The land (192) on the sleeve (82) has a notch (202) immediately adjacent to, and downstream of the minimum cross-sectional flow area which provides an abrupt increase in cross-sectional flow area for suppressing valve noise due to cavitation.
The core (80) and sleeve (82) have relative rotational positions such that the lands (192,220) overlap to define a flow gap for flow of hydraulic fluid from the groove (110) in the sleeve (82) to the groove (122) in the core (80). The flow gap has a minimum cross-sectional flow area adjacent to the groove (122) in the core (80). The minimum cross-sectional flow area constantly varies as the core (80) and sleeve (82) relatively rotate. The land (192) on the sleeve (82) has a notch (202) immediately adjacent to, and downstream of the minimum cross-sectional flow area which provides an abrupt increase in cross-sectional flow area for suppressing valve noise due to cavitation.
公开/授权文献
- EP0585107B1 Steering control valve with contoured control surfaces 公开/授权日：1995-11-29
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