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    • 10. 发明授权
    • Power transmission device
    • 动力传动装置
    • US09086140B2
    • 2015-07-21
    • US13281998
    • 2011-10-26
    • Tetsuya ShimizuTomomi IshikawaTomoya JinnoKenichi TsuchidaKazunori Ishikawa
    • Tetsuya ShimizuTomomi IshikawaTomoya JinnoKenichi TsuchidaKazunori Ishikawa
    • F16H61/00F16H61/02
    • F16H61/0021F16H61/0031F16H61/0206F16H2312/14F16H2312/20
    • A power transmission device that transmits power from a motor to a wheel via a hydraulically driven friction engagement element and that includes a mechanical pump driven by the motor to produce a hydraulic pressure that is regulated by a pressure regulating valve; an electric pump that produces a hydraulic pressure; a switching mechanism that either switches an output pressure of the regulating valve or an output pressure of the electric pump to a servo of the engagement element based upon a signal pressure; a passage to supply pressure from the mechanical pump to the hydraulic servo; a check valve in the passage that allows supply of the pressure from the mechanical pump to the hydraulic servo and prohibits supply of the pressure from the electric pump to the mechanical pump, and the switching mechanism either shuts off or allows communication through the passage based upon the signal pressure.
    • 一种动力传递装置,其通过液压驱动的摩擦接合元件将电动机从电动机传递到车轮,并且包括由电动机驱动的机械泵,以产生由压力调节阀调节的液压; 产生液压的电动泵; 切换机构,其基于信号压力将调节阀的输出压力或电动泵的输出压力切换到接合元件的伺服机构; 从机械泵向液压伺服提供压力的通道; 通道中的止回阀,其允许将来自机械泵的压力提供给液压伺服机构,并禁止从电动泵向机械泵供给压力,并且切换机构关闭或允许通过通道的连通基于 信号压力。