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    Hydraulic transmission control device
    1.
    发明授权
    Hydraulic transmission control device 失效
    液压传动控制装置

    公开(公告)号：US4068543A

    公开(公告)日：1978-01-17

    申请号：US619966

    申请日：1975-10-06

    申请人： Toshimitsu Sakai ,  Mitsuo Kawai ,  Kiyohumi Mizuno

    发明人： Toshimitsu Sakai ,  Mitsuo Kawai ,  Kiyohumi Mizuno

    IPC分类号： B60K17/10 ,  F16H47/04 ,  F16H61/06 ,  B60K41/04

    CPC分类号： F16H61/061 ,  F16H47/04 ,  F16H2037/0886 ,  Y10T477/637

    摘要： A control system for a power dividing type hydraulic transmission in which the motive power supplied from an engine is transmitted mechanically. Part of the motive power is converted to hydraulic power by hydraulic pump motors to obtain infinitely variable speed ratios. The transmission includes a hydraulic pressure control system that operates by the use of electrically controlled solenoid valves. The control system detects the rotational speeds of an input and an output shaft, and when the speed ratio between the shafts is smaller than the mode converting speed ratio, a first solenoid valve is operated to engage a first clutch. When the speed ratio is greater than the mode converting speed ratio, a second solenoid valve is operated to engage a second clutch. The engagement of the clutches is timed so that both clutches are not coincidentally disengaged.

    摘要翻译： 用于动力分配式液压变速器的控制系统，其中从发动机供应的动力机械地传递。 动力的一部分由液压泵马达转换为液压动力，以获得无级变速。 变速器包括通过使用电控电磁阀操作的液压控制系统。 控制系统检测输入轴和输出轴的转速，并且当轴之间的速比小于模式转换速度比时，操作第一电磁阀以接合第一离合器。 当速比大于模式转换速比时，第二电磁阀被操作以接合第二离合器。 离合器的啮合是定时的，使得两个离合器不会巧合地脱开。

    Hydromechanical transmission
    2.
    发明授权
    Hydromechanical transmission 失效
    液压机械传动

    公开(公告)号：US4131035A

    公开(公告)日：1978-12-26

    申请号：US789739

    申请日：1977-04-21

    申请人： Kiyohumi Mizuno ,  Hiroaki Maeda ,  Shigeo Takahashi ,  Tsukasa Watanabe

    发明人： Kiyohumi Mizuno ,  Hiroaki Maeda ,  Shigeo Takahashi ,  Tsukasa Watanabe

    IPC分类号： F16H47/04 ,  F16H59/24 ,  F16H59/42 ,  F16H59/44 ,  F16H61/02 ,  B60K41/04

    CPC分类号： F16H47/04 ,  F16H2037/0886 ,  Y10T477/636 ,  Y10T477/637

    摘要： In a hydromechanical transmission, low and high range clutches are selectively operated in response to variation of an actual speed ratio between an input shaft and an output shaft to complete low or high speed drive power train. The transmission comprises a speed ratio detecting valve for detecting lower and higher limits of a predetermined speed ratio and a clutch control valve for selectively operating the low and high range clutches when the actual speed ratio reaches in a range defined by the lower and higher limits of the predetermined speed ratio. The operation of the clutch control valve is controlled by a pressure control valve in accordance with a difference in value between a first signal responsive to a throttle opening angle and a second signal responsive to the rotation speed of the input shaft such that the low and high range clutches are selectively operated only when the difference between the first and second signals becomes a predetermined value.

    摘要翻译： 在液力机械变速器中，响应于输入轴和输出轴之间的实际速比的变化选择性地操作低档和高档离合器以完成低速或高速驱动动力传动系。 变速器包括用于检测预定速比的下限和上限的速比检测阀和用于选择性地操作低档和高档离合器的离合器控制阀，当实际速比达到由下限和上限限定的范围时 预定速比。 离合器控制阀的操作由压力控制阀根据响应于节气门开度的第一信号与响应于输入轴的转速的第二信号之间的差异值来控制，使得低和高 仅当第一和第二信号之间的差成为预定值时，选择性地操作范围离合器。

    Hydromechanical transmission
    4.
    发明授权
    Hydromechanical transmission 失效
    液压机械传动

    公开(公告)号：US4170153A

    公开(公告)日：1979-10-09

    申请号：US787931

    申请日：1977-04-15

    申请人： Kiyohumi Mizuno ,  Hiroaki Maeda ,  Shigeo Takahashi

    发明人： Kiyohumi Mizuno ,  Hiroaki Maeda ,  Shigeo Takahashi

    IPC分类号： F16H47/04 ,  F16H61/42 ,  F16H61/46 ,  F16H61/462 ,  B60K21/00 ,  B60K41/04

    CPC分类号： F16H61/42 ,  F16H47/04 ,  F16H61/46 ,  F16H61/462 ,  F16H2037/0886 ,  Y10T477/637

    摘要： In a hydromechanical transmission, low and high speed drive power trains are selectively completed in response to variation of the speed ratio between an input shaft and an output shaft. The transmission comprises a speed ratio detecting valve for detecting lower and higher limits of a predetermined speed ratio and a clutch control valve for conducting the switchover between the low and high speed drive power trains with a predetermined time lag after the actual speed ratio reaches a range defined by the lower and higher limits of the predetermined speed ratio.

    摘要翻译： 在液压机械变速器中，响应于输入轴和输出轴之间的速比的变化，选择性地完成低速和高速驱动动力系。 变速器包括用于检测预定速比的下限和上限的变速比检测阀和用于在实际变速比达到范围之后以预定的时间滞后在低速和高速驱动功率列之间进行切换的离合器控制阀 由预定速比的下限和上限定义。