发明名称 |
Automatic transmission shift control |
摘要 |
An automatic transmission ratio shift control system and method for a powertrain having a throttle-controlled engine and multiple-ratio gearing, torque flow paths through the gearing being established and disestablished by pressure-operated friction elements, an electronic controller for establishing torque transitions between the friction elements as ratio changes occur in the multiple-ratio gearing, the engine throttle being controlled by an electronic throttle control that is decoupled from the driver-controlled accelerator pedal, the transmission torque output being controlled by means of a friction element capacity control strategy including a feed-forward torque term determined by changes in commanded torque, the slip duration during a ratio change being controlled by means of closed-loop engine torque control.
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申请公布号 |
US6449548(B1) |
申请公布日期 |
2002.09.10 |
申请号 |
US20010783116 |
申请日期 |
2001.02.14 |
申请人 |
FORD GLOBAL TECHNOLOGIES, INC. |
发明人 |
JAIN PRAMOD KUMAR;SANKPAL BALARAM G.;RIEDLE BRADLEY DEAN;MERNER JAMES M. |
分类号 |
B60W10/06;B60W10/10;B60W30/18;G06F17/00;G06F19/00;(IPC1-7):G06F17/00 |
主分类号 |
B60W10/06 |
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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