发明授权
- 专利标题: Hydraulic control device for automatic transmission
- 专利标题(中): 液压控制装置自动变速器
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申请号: US181149申请日: 1988-03-01
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公开(公告)号: US4903550A公开(公告)日: 1990-02-27
- 发明人: Yoshinari Kuwayama , Fumitomo Yokoyama , Masakatsu Miura
- 申请人: Yoshinari Kuwayama , Fumitomo Yokoyama , Masakatsu Miura
- 申请人地址: JPX Anjo
- 专利权人: Aisin-Warner Kabushiki Kaisha
- 当前专利权人: Aisin-Warner Kabushiki Kaisha
- 当前专利权人地址: JPX Anjo
- 优先权: JPX61-154693 19860701
- 主分类号: B60K20/00
- IPC分类号: B60K20/00 ; F16H59/08 ; F16H61/00 ; F16H61/02
摘要:
A hydraulic control device for an automatic transmission, having a gear ratio different from that of usual D range by a manual shift down from the D range to range 3 or 2, is mounted on an automobile. A first solenoid valve, a first shift valve and a second shift valve are connected so that the first solenoid valve controls the first and second shift valves. A second solenoid valve, a third shift valve and a down shift control valve are connected so that the second solenoid valve controls the third shift valve and the down shift control valve. Oil paths through which line pressure is applied in accordance with the range at which the manual valve is set are connected to certain shift valves, so that motions of the valves in the shift valves and the down shift control valve are constrained in accordance with the set range of the manual valve.
公开/授权文献
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