发明名称 |
Überbrückungssteuervorrichtung für eine Überbrückungskupplung eines Drehmomentwandlers für ein Automatikgetriebe |
摘要 |
In response to a signal indicating the present throttle valve opening degree detected by a throttle valve sensor and a signal indicating the present vehicle speed detected by a vehicle speed sensor, a lock-up controller determines whether a lock-up clutch should be brought into the operatively connected state or it should be released from the operatively connected state, and on completion of the foregoing determination, the controller outputs a certain signal to a solenoid valve. In the case that the lock-up clutch has been released, this state is maintained. On the contrary, in the case that the lock-up clutch has been in the operatively connected state, the controller determines whether maintains this state or selects a lock-up clutch releasing pattern depending on the present throttle valve opening degree. Specifically, the controller selects a pattern in such a manner that the operative connecting force of the lock-up clutch is quickly reduced at the time of coasting of a vehicle, it is slowly reduced at the time of an intermediate throttle valve opening degree, and it is appreciably slowly reduced at the time of a large throttle valve opening degree. With such control, a driver does not unpleasantly feel a stifling shock at the time of coasting, and moreover, acceleration behavior of the vehicle is enhanced at the time of a large throttle valve opening degree. |
申请公布号 |
DE4416701(C2) |
申请公布日期 |
1998.03.12 |
申请号 |
DE19944416701 |
申请日期 |
1994.05.11 |
申请人 |
JATCO CORP., FUJI, SHIZUOKA, JP |
发明人 |
IIZUKA, NONORI, FUJI, SHIZUOKA, JP |
分类号 |
F16H59/18;F16H59/24;F16H61/14;(IPC1-7):F16H61/14 |
主分类号 |
F16H59/18 |
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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