发明授权
- 专利标题: Hydraulic control apparatus for a multi-stage automatic transmission
- 专利标题(中): 用于多级自动变速器的液压控制装置
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申请号: US11643785申请日: 2006-12-22
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公开(公告)号: US07618344B2公开(公告)日: 2009-11-17
- 发明人: Takayuki Hayashi , Tetsuya Yamaguchi , Kazuyuki Noda , Minoru Todo , Kazuhisa Ozaki , Kazutoshi Nozaki , Atsushi Honda
- 申请人: Takayuki Hayashi , Tetsuya Yamaguchi , Kazuyuki Noda , Minoru Todo , Kazuhisa Ozaki , Kazutoshi Nozaki , Atsushi Honda
- 申请人地址: JP Aichi-ken JP Aichi-ken
- 专利权人: Aisin AW Co., Ltd.,Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Aisin AW Co., Ltd.,Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址: JP Aichi-ken JP Aichi-ken
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2005-378389 20051228; JP2005-378390 20051228; JP2005-378391 20051228
- 主分类号: F16H61/12
- IPC分类号: F16H61/12
摘要:
A hydraulic control apparatus for a multi-stage automatic transmission includes solenoid valves such as the linear solenoid valves that are formed as normally closed valves. A first clutch apply relay valves that outputs a forward range pressure as a reverse input pressure during an all-solenoid-off mode, and a second clutch apply relay valve that switches between a left half position that inputs a reverse input pressure to a discharge port and a right half position that inputs the reverse pressure to the discharge port are provided. The second clutch apply relay valve is set to the right half position during normal engine startup and locked based on the lock pressure by feeding the line pressure as a lock pressure and is set at the left half position that interrupts the lock pressure after the engine is restarted during all-solenoids-off.