发明申请
- 专利标题: SHIFT CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION
- 专利标题(中): 自动变速箱换档控制装置
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申请号: US12254481申请日: 2008-10-20
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公开(公告)号: US20090170650A1公开(公告)日: 2009-07-02
- 发明人: Takahiro MORIMOTO , Haruki Sato , Masatake Ichikawa , Hiroshi Tsutsui
- 申请人: Takahiro MORIMOTO , Haruki Sato , Masatake Ichikawa , Hiroshi Tsutsui
- 申请人地址: JP Anjo-shi
- 专利权人: AISIN AW CO., LTD.
- 当前专利权人: AISIN AW CO., LTD.
- 当前专利权人地址: JP Anjo-shi
- 优先权: JP2007-339366 20071228
- 主分类号: F16H61/04
- IPC分类号: F16H61/04
摘要:
A shift control apparatus that disconnects and connects respective pairs of friction engagement elements during downshift to a speed spaced apart by two or more steps through an intermediate shift speed. A shift controller controls a hydraulic pressure of a second shift release element by feedback control, and in accordance with the increase in the torque capacity of the second shift release element, also controls the torque capacity of a first shift engagement element so as to be sufficiently higher than the amount of change in the torque capacity of the second shift release element. The occurrence of adverse consequences in which a shift shock is generated is effectively suppressed because a sufficient reaction force cannot be ensured during engagement switching due to insufficient torque capacity of the first shift engagement element, and since the second shift release element cannot be appropriately feedback-controlled, difficulty in control of rotation change results.
公开/授权文献
- US08142320B2 Shift control apparatus for automatic transmission 公开/授权日:2012-03-27
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