发明授权
- 专利标题: Vehicular shift control apparatus
- 专利标题(中): 车辆换挡控制装置
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申请号: US13683547申请日: 2012-11-21
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公开(公告)号: US08849524B2公开(公告)日: 2014-09-30
- 发明人: Kunio Hattori , Shinya Toyoda , Taira Iraha
- 申请人: Kunio Hattori , Shinya Toyoda , Taira Iraha
- 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, L.L.P.
- 主分类号: G06F7/00
- IPC分类号: G06F7/00 ; F16H61/00 ; F16H61/662
摘要:
A vehicular shift control apparatus configured to control a speed ratio of a belt-type transmission having first and second variable-diameter pulleys, and a transmission belt wound between the first and second variable-diameter pulleys, by controlling hydraulic pressures to be applied to respective hydraulic cylinders of said first and second variable-diameter pulleys, according to respective commanded hydraulic pressure values of the first and second variable-diameter pulleys, such that the speed ratio coincides with a target value, the vehicular shift control apparatus includes a shift control portion configured to be operable, when a first-variable-diameter-pulley hold pressure which permits the speed ratio of said belt-type transmission to be held at the target value in a shift-down action is determined as said commanded hydraulic pressure value of the first variable-diameter pulley, to temporarily reduce said commanded hydraulic pressure value with respect to said first-variable-diameter-pulley hold pressure in an initial period of said shift-down action.
公开/授权文献
- US20130080004A1 VEHICULAR SHIFT CONTROL APPARATUS 公开/授权日:2013-03-28
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