- 专利标题: Shift control apparatus for automatic transmission
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申请号: US10015608申请日: 2001-12-17
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公开(公告)号: US06616560B2公开(公告)日: 2003-09-09
- 发明人: Masahiro Hayabuchi , Masaaki Nishida , Hiroshi Tsutsui , Kouichi Kojima , Yutaka Teraoka , Nobuhiro Iwai , Masatake Ichikawa
- 申请人: Masahiro Hayabuchi , Masaaki Nishida , Hiroshi Tsutsui , Kouichi Kojima , Yutaka Teraoka , Nobuhiro Iwai , Masatake Ichikawa
- 优先权: JP2000-399871 20001228
- 主分类号: F16H3100
- IPC分类号: F16H3100
摘要:
A shift control apparatus that advances activation of an engagement element to be engaged during a shift requiring engagement and release of four engagement elements, thereby reducing the shift time. The automatic transmission achieves a sixth-to-fourth-to-third shift by controlling servo pressures for the four engagement elements. The control apparatus starts, during the time of the sixth-to-third shift, supply of the hydraulic pressure for activating the engagement element to be engaged at the time of the fourth-to-third shift, thereby advancing the establishment of the engagement stand-by state at the time of the fourth-to-third shift. Accordingly, the reduction in the servo pressure of the engagement element to be released at the time of the fourth-to-third shift can be advanced, thereby reducing the time for the sixth-to-third shift.
公开/授权文献
- US20020086760A1 Shift control apparatus for automatic transmission 公开/授权日:2002-07-04
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