发明授权
- 专利标题： System for controlling the pressure of oil in a system for a continuously variable transmission
- 专利标题（中）： 用于控制无级变速器系统中油压的系统
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申请号： US885990申请日： 1986-07-15
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公开(公告)号： US4674363A公开(公告)日： 1987-06-23
- 发明人: Motohisa Miyawaki
- 申请人： Motohisa Miyawaki
- 申请人地址： JPX Tokyo
- 专利权人： Fuji Jukogyo Kabushiki Kaisha
- 当前专利权人： Fuji Jukogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX60-191045 19850830
- 主分类号： B60W10/04
- IPC分类号： B60W10/04 ; B60W10/10 ; B60W10/101 ; B60W10/18 ; B60W10/184 ; F16H9/00 ; F16H61/00 ; F16H61/02 ; F16H61/04 ; F16H61/10 ; F16H61/662 ; B60K41/12 ; B60K41/10 ; B60K41/18
摘要：
A control system for a continuously variable transmission has a line pressure control valve having ports and a spool for controlling the line pressure of oil supplied to a cylinder of a pulley device to change the transmission ratio. The line pressure control valve has chambers. When the transmission ratio reaches a maximum value after disengagement of a clutch, a line pressure reducing signal generates. The signal is applied to the line pressure control valve to shift the spool thereof, so that the line pressure is reduced to a minimum value. By controlling the pressure of oil supplied to the chambers in accordance with a desired line pressure, the spool is shifted, so that the line pressure is controlled.
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