发明名称 |
Lockup control apparatus |
摘要 |
A lockup control apparatus for use with an automotive vehicle having an engine, an automatic transmission and a torque converter operable in a coast lockup mode having a lockup capacity to provide a controlled degree of mechanical connection between the engine and the automatic transmission when the vehicle is coasting. The apparatus employs a memory having a desired value for the lockup capacity stored therein. A first signal is produced when a slip rotation occurs in the torque converter and a second signal is produced when the coast lockup mode is released. The desired lockup capacity value is updated with a greater value in response to the first signal. A frequency at which either of the first and second signals occurs is measured. The desired lockup capacity value is updated with a smaller value when the measured frequency exceeds a reference value. The lockup capacity is controlled based on the desired lockup capacity value stored in the memory to retain the frequency of occurrence of the first signal in a predetermined range. |
申请公布号 |
US5916293(A) |
申请公布日期 |
1999.06.29 |
申请号 |
US19970789613 |
申请日期 |
1997.01.24 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
KATAKURA, SHUSAKU;TAKIZAWA, SATOSHI;TOUJIMA, HISAAKI;TOUKURA, NOBUSUKE;SHIMIZU, HIROFUMI |
分类号 |
F16H59/18;F16H59/22;F16H61/14;(IPC1-7):G06G7/70;F16D33/00 |
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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