发明名称 |
Ratio Shift Control System And Method For A Multiple-Ratio Automatic Transmission |
摘要 |
A control system and method for controlling a multiple gear ratio automatic transmission in a powertrain for an automatic transmission having pressure activated friction torque elements to effect gear ratio upshifts. The friction torque elements are synchronously engaged and released during a torque phase of an upshift event as torque from a powertrain source is increased while allowing the off-going friction elements to slip, followed by an inertia phase during which torque from a powertrain source is modulated. A perceptible transmission output torque reduction during an upshift is avoided. |
申请公布号 |
US2013085034(A1) |
申请公布日期 |
2013.04.04 |
申请号 |
US201213686144 |
申请日期 |
2012.11.27 |
申请人 |
FORD GLOBAL TECHNOLOGIES, LLC;FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
FUJII YUJI;ASGARI JAHAN;HROVAT DAVORIN DAVID;JIANG HONG;PIETRON GREGORY MICHAEL;RIEDLE BRADLEY DEAN;TESLAK CHRISTOPHER JOHN;TSENG HONGTEI ERIC |
分类号 |
B60W10/04;B60W10/02 |
主分类号 |
B60W10/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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