发明名称 |
RATIO SHIFT CONTROL FOR A MULTIPLE RATIO AUTOMATIC TRANSMISSION |
摘要 |
A gear ratio shift control and control method controls gear ratio upshifts in a multiple-ratio transmission for an automotive vehicle. Pressure actuated friction elements establish torque flow paths in transmission gearing as they are selectively engaged and released. A net torque reduction at a transmission torque output shaft during an upshift event is reduced by increasing transmission input torque prior to the start of the inertia phase of the upshift event.
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申请公布号 |
US2008139362(A1) |
申请公布日期 |
2008.06.12 |
申请号 |
US20080032852 |
申请日期 |
2008.02.18 |
申请人 |
FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
FUJII YUJI;KRASKA MARVIN PAUL;PLETRON GREGORY MICHAEL;TOBLER WILLIAM EMIL;ORTMANN WALTER JOSEPH;RIEDLE BRADLEY DEAN;COWAN RONALD THOMAS;HROVAT DAVORIN DAVID |
分类号 |
B60W10/10;G06F17/00 |
主分类号 |
B60W10/10 |
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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