发明申请
US20070117676A1 Shift control device and shift control method of automatic transmission
有权
变速控制装置和自动变速器的变速控制方法
- 专利标题: Shift control device and shift control method of automatic transmission
- 专利标题(中): 变速控制装置和自动变速器的变速控制方法
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申请号: US11603202申请日: 2006-11-22
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公开(公告)号: US20070117676A1公开(公告)日: 2007-05-24
- 发明人: Atsushi Ayabe , Toshio Sugimura , Ayumu Sagawa , Takahiko Tsutsumi , Hisashi Ishihara , Kazuhiro Iketomi , Yosuke Takaie
- 申请人: Atsushi Ayabe , Toshio Sugimura , Ayumu Sagawa , Takahiko Tsutsumi , Hisashi Ishihara , Kazuhiro Iketomi , Yosuke Takaie
- 专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Toyota Jidosha Kabushiki Kaisha
- 优先权: JP2005-338943 20051124
- 主分类号: B60W10/04
- IPC分类号: B60W10/04
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.