发明名称 CLUTCH SWITCHING CIRCUIT OF NONSTAGE TRANSMISSION.
摘要 <p>The invention relates to a clutch switching circuit which can be utilised suitably for a multi-stage static hydraulic mechanical nonstage transmission. If pressure regulating valves having good override characteristics are used, slip or breakage of a clutch will occur. Therefore, this invention provides a clutch switching circuit which provides communicating throttle passages (311) in the valve body of the pressure regulating valves (211) so that a working fluid flows towards the clutch when the valves are closed. When the clutch is switched, the working fluid flows in a quantity equivalent at least to the oil leakage flow quantity so that the slip or breakage of the clutch can be prevented while pressure regulating valves having good override characteristics are used. The invention provides also a clutch switching circuit wherein common oil passages leading to a plurality of clutches corresponding to the gears which are not adjacent to one another are provided, and the pressure regulating valves and pressure reducing valves used commonly for a plurality of gears are installed in the common oil passages.</p>
申请公布号 EP0356527(A1) 申请公布日期 1990.03.07
申请号 EP19890902301 申请日期 1989.02.13
申请人 KABUSHIKI KAISHA KOMATSU SEISAKUSHO 发明人 ISHINO, TSUTOMU;MARUYAMA, RYOICHI
分类号 F16D48/02;F16D48/06;F16H61/06 主分类号 F16D48/02
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