发明授权
- 专利标题： Adaptive pressure control method for synchronous downshifts in a multiple-ratio transmission
- 专利标题（中）： 用于多比率传输中同步降档的自适应压力控制方法
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申请号： US10712861申请日： 2003-11-13
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公开(公告)号： US07216025B2公开(公告)日： 2007-05-08
- 发明人: Brian Keyse , Steve Cicala , Ihab Soliman , Charles Suter , Kurt Nickerson , Bradley Riedle
- 申请人： Brian Keyse , Steve Cicala , Ihab Soliman , Charles Suter , Kurt Nickerson , Bradley Riedle
- 申请人地址： US MI Dearborn
- 专利权人： Ford Global Technologies, LLC
- 当前专利权人： Ford Global Technologies, LLC
- 当前专利权人地址： US MI Dearborn
- 代理机构： Brooks Kushman P.C.
- 代理商 David B. Kelley
- 主分类号： F16H61/00
- IPC分类号： F16H61/00 ; F16H61/38 ; G06F17/00
摘要：
An adaptive pressure control method for synchronous downshifts in an automatic transmission that uses pressure actuated friction elements. The method uses characteristic parameters that determine downshift quality for both power-on downshifts and power-off downshifts. Selected measured variables are monitored to detect changes in the parameters. Adjustments for the friction elements are made in response to changes in the measured variables.
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