发明名称 |
Shift control device and shift control method of automatic transmission |
摘要 |
A shift control device of a vehicular automatic transmission that establishes a plurality of gear steps of different speed change ratios by selectively engaging a plurality of friction engagement devices ends the shift control by making an engagement end determination regarding an engagement-side friction engagement device if it has been determined continuously for a predetermined time that the input shaft rotation speed of the automatic transmission is in the vicinity of the synchronous rotation speed of the post-shift gear step. The predetermined time is set at a first time if the downshift is a power-on downshift due to a shift judgement in a power-on state, and is set at a second time that is shorter than the first time if the downshift is a power-off->on downshift selected in connection with a change to the power-on state during a power-off shift due to the shift judgment in a power-off state. |
申请公布号 |
US7563198(B2) |
申请公布日期 |
2009.07.21 |
申请号 |
US20060603202 |
申请日期 |
2006.11.22 |
申请人 |
TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
AYABE ATSUSHI;SUGIMURA TOSHIO;SAGAWA AYUMU;TSUTSUMI TAKAHIKO;ISHIHARA HISASHI;IKETOMI KAZUHIRO;TAKAIE YOSUKE |
分类号 |
F16H61/26 |
主分类号 |
F16H61/26 |
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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