发明名称 |
Automatic transmission and control method thereof |
摘要 |
An automatic transmission control unit determines whether or not a constantly open failure, in which a switch valve cannot switch a pressure regulating valve and a second hydraulic chamber to a non-communicative state, has occurred on the basis of a parameter (an inertia phase time, for example) representing a dynamic characteristic during a shift from a first gear position to a second gear position. The determination of the constantly open failure is begun after initial variation in the parameter representing the dynamic characteristic during the shift has been eliminated through learning control in which the dynamic characteristic during the shift is caused to approach a target dynamic characteristic. |
申请公布号 |
EP2133598(A3) |
申请公布日期 |
2010.03.17 |
申请号 |
EP20090006876 |
申请日期 |
2009.05.22 |
申请人 |
JATCO LTD |
发明人 |
NAGASHIMA, FUMITAKA;TASAKA, HAJIME;SHINSO, YOSHIHIDE |
分类号 |
F16H61/12;F16H59/68;F16H59/74;F16H61/06;F16H61/68;F16H61/684;F16H61/686 |
主分类号 |
F16H61/12 |
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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