发明申请

  • 专利标题: HYDRAULIC PRESSURE CONTROLLER FOR CONTINUOUSLY VARIABLE TRANSMISSION
  • 专利标题(中): 液压控制器连续可变传动
  • 申请号: US13581936
    申请日: 2010-04-26
  • 公开(公告)号: US20120317969A1
    公开(公告)日: 2012-12-20
  • 发明人: Naofumi Nishida
  • 申请人: Naofumi Nishida
  • 申请人地址: JP Aichi-ken
  • 专利权人: Toyota Jidosha Kabushiki Kaisha
  • 当前专利权人: Toyota Jidosha Kabushiki Kaisha
  • 当前专利权人地址: JP Aichi-ken
  • 国际申请: PCT/JP2010/057391 WO 20100426
  • 主分类号: F16D31/02
  • IPC分类号: F16D31/02
HYDRAULIC PRESSURE CONTROLLER FOR CONTINUOUSLY VARIABLE TRANSMISSION
摘要:
Disclosed is a hydraulic control device for a continuously variable transmission which changes the transmission gear ratio by changing the hydraulic pressure (Pin, Pout) supplied to hydraulic pressure chambers (134, 154) for pulleys in the continuously variable transmission via control valves (217, 218) is changed. In this hydraulic control device, line pressure regulation hydraulic pressure (Psrv) which corresponds to the magnitudes of the oil pressure (Pin, Pout) supplied to the hydraulic pressure chambers (134, 154) is introduced into a regulator valve (212), and line pressure (P1) which is input into the control valves (217, 218) according to the magnitudes of the oil pressure (Pin, Pout) is subjected to feedback regulation. In the hydraulic control device for the continuously variable transmission, after the valve element (217a) of the control valve (217) is driven in the valve opening direction, a vibration restriction control operation which temporarily restricts the displacement of the valve element (217a) is executed.
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