发明授权
- 专利标题： Method and apparatus to monitor a valve adapted to control mode to gear transitions during operation of an electro-mechanical transmission
- 专利标题（中）： 用于监测适于在机电变速器运行期间控制模式以转换档位的阀的方法和装置
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申请号： US11854566申请日： 2007-09-13
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公开(公告)号： US07878932B2公开(公告)日： 2011-02-01
- 发明人: Ryan D. Martini , Charles J. Van Horn , Peter E. Wu , Andrew M. Zettel , Thomas E. Mathews , Jy-Jen F. Sah , Syed Naqi , Darren Crewes
- 申请人： Ryan D. Martini , Charles J. Van Horn , Peter E. Wu , Andrew M. Zettel , Thomas E. Mathews , Jy-Jen F. Sah , Syed Naqi , Darren Crewes
- 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： F16H3/72
- IPC分类号： F16H3/72
摘要：
Monitoring operation of an electro-mechanical transmission having a hydraulic circuit with flow management valves and pressure control solenoids to actuate clutches and pressure monitoring devices to monitor the hydraulic circuit is provided. The transmission operates in fixed gear and continuously variable operating range states. The method comprises controlling position of one of the flow management valves to control operation in one of the operating range states. A fault is detected in the one of the flow management valves based upon outputs of the pressure monitoring devices during steady state operation in one of the continuously variable operating range states. A fault is detected in the one of the flow management valves based upon the output of one of the pressure monitoring devices during a transition in the flow management valve.