发明授权
US07544149B2 Shift control apparatus and shift control method of automatic transmission of vehicle
失效
车辆自动变速器的换档控制装置和变速控制方法
- 专利标题: Shift control apparatus and shift control method of automatic transmission of vehicle
- 专利标题(中): 车辆自动变速器的换档控制装置和变速控制方法
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申请号: US11490070申请日: 2006-07-21
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公开(公告)号: US07544149B2公开(公告)日: 2009-06-09
- 发明人: Atsushi Ayabe , Toshio Sugimura , Toshinari Suzuki , Hisashi Ishihara , Yosuke Takaie
- 申请人: Atsushi Ayabe , Toshio Sugimura , Toshinari Suzuki , Hisashi Ishihara , Yosuke Takaie
- 申请人地址: JP Toyota-shi
- 专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址: JP Toyota-shi
- 代理机构: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- 优先权: JP2005-223351 20050801
- 主分类号: B60W10/04
- IPC分类号: B60W10/04 ; B60W10/10
摘要:
The invention relates to a shift control apparatus for an automatic transmission that executes a torque reduction control when the transmission downshifts in response to a downshift determination made during an upshift. The shift control apparatus includes a multiple shift execution unit that starts the downshift in response to the downshift determination, and a torque reduction control execution unit that determines whether the rotational speed of the input member is at least a control start-up rotational speed, after the downshift operation starts, and executes a torque reduction control of the power source when the rotational speed of the input member is increased to at least the control start-up rotational speed. This allows the rotational speed of the input shaft to be quickly changed to the appropriate synchronous rotational speed. Thus, the desired driving force is provided upon completion of the downshift without overspeeding the engine.