发明名称 |
Method and an apparatus for controlling a car equipped with an automatic transmission having a lockup clutch |
摘要 |
The present invention relates to a method and an apparatus for controlling a car equipped with an automatic transmission having a lockup clutch. According to the control method of the present invention, when the lockup clutch is in the lockup state, a variation of a generated torque is detected. When the range of the torque variation detected exceeds a predetermined value, an engine torque is reduced by controlling the engine, and the automatic transmission is controlled to compensate for a reduction of the driving torque due to a reduction of the engine torque. Thus, the speed change ratio is changed to the low gear side. The control unit of the present invention includes a unit for controlling an output torque of an engine according to a command value, a unit for changing the transmission ratio of the automatic transmission, a unit for detecting a variation of the engine torque, a unit for deciding a target driving torque, a unit for reducing a torque command value when the range of a detected variation of the torque has exceeded a predetermined value when the lockup clutch was in the lockup state, and a unit for deciding a transmission ratio at which the reduction of the driving torque due to the reduction of the engine torque is compensated for.
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申请公布号 |
US6095117(A) |
申请公布日期 |
2000.08.01 |
申请号 |
US19990236483 |
申请日期 |
1999.01.25 |
申请人 |
HITACHI, LTD. |
发明人 |
MINOWA, TOSHIMICHI;NISHIMURA, YUTAKA;KAWASHIMA, KEN`ICHI;KUROIWA, HIROSHI;IBAMOTO, MASAHIKO |
分类号 |
F02D29/00;B60W10/00;B60W10/02;B60W10/06;B60W10/08;B60W10/10;B60W30/18;F02D41/04;F02D45/00;F16H59/14;F16H59/18;F16H59/34;F16H59/36;F16H59/74;F16H61/00;F16H61/02;F16H61/12;F16H61/14;F16H61/66;F16H61/662;(IPC1-7):F02D41/00 |
主分类号 |
F02D29/00 |
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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