发明授权
- 专利标题： Automatic transmission control system
- 专利标题（中）： 自动变速器控制系统
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申请号： US09449980申请日： 1999-11-26
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公开(公告)号： US06309324B1公开(公告)日： 2001-10-30
- 发明人: Kenji Sawa , Shinya Kamada
- 申请人： Kenji Sawa , Shinya Kamada
- 优先权： JP9-284741 19970930
- 主分类号： F16H6116
- IPC分类号： F16H6116
摘要：
An automatic transmission control system provided with a speed sensor for monitoring an input speed to the automatic transmission, on one hand, prohibits gear shifts only to gears which are provided by alternately locking and unlocking two friction coupling elements at a timing determined essentially based on an input speed when an failure of the speed sensor occurs and, on the other hand, permits gear shifts to gears which are provided in participation of the one-way clutch by alternately locking and unlocking the two friction coupling elements, a timely alternate lock and unlock operation of the two friction coupling elements being spontaneously caused by the unlock operation of one of the two friction coupling elements and gear shifts to gears which are provided by locking one of the two friction coupling elements and unlocking the other with common pressure or unlocking one of the two friction coupling elements and locking the other with common pressure.