发明授权
- 专利标题: Shift actuator valve having a pressure dead band
- 专利标题(中): 换档执行器阀具有压力死区
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申请号: US12611669申请日: 2009-11-03
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公开(公告)号: US08371552B2公开(公告)日: 2013-02-12
- 发明人: Philip C. Lundberg , Bret M. Olson
- 申请人: Philip C. Lundberg , Bret M. Olson
- 申请人地址: US MI Detroit
- 专利权人: GM Global Technology Operations LLC
- 当前专利权人: GM Global Technology Operations LLC
- 当前专利权人地址: US MI Detroit
- 主分类号: F16K31/122
- IPC分类号: F16K31/122
摘要:
A valve assembly having a pressure dead band includes a first valve or sleeve slidably disposed within a valve body. A second valve is partially slidably disposed within the first valve and partially slidably disposed in the valve body. A plurality of fluid passages communicate with the valve assembly and provide a first flow of hydraulic fluid and a second flow of hydraulic fluid. A lower threshold of the pressure dead band is defined by the pressure on the combination of the first area of the first valve and the first area of the second valve required to balance the resultant force developed on the second area of the second valve. An upper threshold of the pressure dead band is defined by the pressure on the first area of the second valve required to balance the resultant force developed on the second area of the second valve.
公开/授权文献
- US20100148099A1 SHIFT ACTUATOR VALVE HAVING A PRESSURE DEAD BAND 公开/授权日:2010-06-17
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