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    CONTROL DEVICE OF POWER TRANSMISSION DEVICE, POWER TRANSMISSION DEVICE, AND CONTROL METHOD FOR POWER TRANSMISSION DEVICE
    1.
    发明申请
    CONTROL DEVICE OF POWER TRANSMISSION DEVICE, POWER TRANSMISSION DEVICE, AND CONTROL METHOD FOR POWER TRANSMISSION DEVICE 有权

    公开(公告)号：US20220196148A1

    公开(公告)日：2022-06-23

    申请号：US17603713

    申请日：2020-06-08

    申请人： KOMATSU LTD.

    发明人： Shogo MIYAZAKI ,  Shinya KAWAKITA ,  Kenichi YAMADA

    IPC分类号： F16H61/475 ,  F16H61/00 ,  F16H61/4017

    摘要： A power transmission device includes an input shaft, an output shaft, a differential device, a continuously variable transmission unit, and a control device. The differential device includes a first rotation element connected to the input shaft, a second rotation element connected to the output shaft, and a third rotation element. The continuously variable transmission unit includes a conversion unit configured to convert rotational power of the third rotation element into an other power, and a reconversion unit configured to reconvert the converted other power into the rotational power and supply the reconverted rotational power to the output shaft. The control device includes a continuously variable transmission control unit configured to generate a control signal of the continuously variable transmission unit such that the other power generated by the conversion unit exceeds the other power input to the reconversion unit.

    Hydrostatic transmission and method for braking using the same
    2.
    发明授权
    Hydrostatic transmission and method for braking using the same 有权

    公开(公告)号：US10550934B2

    公开(公告)日：2020-02-04

    申请号：US15895177

    申请日：2018-02-13

    申请人： Robert Bosch GmbH

    发明人： Bernhard Kuemmel ,  Martin Behm ,  Michael Mast

    IPC分类号： F16H61/4157 ,  F16H39/10 ,  F16H61/4017 ,  F16H61/433 ,  F16H61/47 ,  F16H59/44 ,  F16H59/36

    摘要： A hydrostatic transmission is configured to realize a braking operation in which at least one adjustable traction motor, which acts as a pump, is supported via a closed circuit on an adjustable axial piston pump, which acts as a motor, and which in turn is supported on an internal combustion engine. Since overspeeding of the latter should be avoided, a control unit adjusts the pivot angle of the pump in accordance with a characteristic map which represents a relationship between a setting force and a pressure difference of two working lines of a closed circuit, a pump rotational speed, and the pivot angle. Thus, characteristic-map-based pilot control of the pivot angle of the pump is possible and feedback of the present pivot angle is omitted.

    Hydrostatic breaking concept
    5.
    发明授权
    Hydrostatic breaking concept 有权

    公开(公告)号：US10281034B2

    公开(公告)日：2019-05-07

    申请号：US14919832

    申请日：2015-10-22

    申请人： Danfoss Power Solutions GmbH & Co OHG

    发明人： Andreas Schumacher

    IPC分类号： F16H61/421 ,  F16H61/431 ,  F16H61/4157 ,  F16H39/02 ,  F16H61/4017 ,  F16H59/68

    摘要： Hydrostatic transmission and method for decelerating a hydrostatic transmission with a closed hydraulic fluid circuit, in which a hydraulic pump drivable by a drive engine and a hydraulic motor are arranged and connected fluidly to one another through two working lines. Alternately depending on the operational mode and on the conveying direction of the hydraulic pump, one working line is the low pressure line and the other one is the high pressure line. The hydraulic pump as well as the hydraulic motor are adjustable in their respective displacement volumes by means of a control unit. The hydraulic motor comprises a housing in which a hydrostatic drive mechanism having an inlet and an outlet is arranged. In a connecting line connecting the outlet and the inlet a pressure control valve is arranged, which can be flown through in direction to the inlet. The pressure control valve opens if the high pressure present at the outlet exceeds a predetermined pressure limit of the pressure relief valve. During the coasting operation of the hydrostatic transmission the displacement of the hydraulic pump and/or of the hydraulic motor are adjustable by means of the control unit in function of the speed of the drive motor or of the speed of the hydraulic pump.

    METHOD AND ARRANGEMENT FOR THE DECELERATION OF A HYDROSTATIC TRANSMISSION
    7.
    发明申请
    METHOD AND ARRANGEMENT FOR THE DECELERATION OF A HYDROSTATIC TRANSMISSION 有权
    降水传播的方法和布置

    公开(公告)号：US20160025215A1

    公开(公告)日：2016-01-28

    申请号：US14803508

    申请日：2015-07-20

    申请人： Danfoss Power Solutions GmbH & Co. OHG

    发明人： Reinhardt Thoms ,  Martin Wuestefeld

    IPC分类号： F16H61/4017 ,  F16H61/475

    CPC分类号： F16H61/4017 ,  F16H61/4157 ,  F16H61/475

    摘要： Method for deceleration of a hydrostatic transmission 3 driven by a drive motor 2 comprising a closed hydraulic fluid circuit, in which a hydraulic pump 4 coupled mechanically with the drive motor 2 and a hydraulic motor 5 are arranged. Two hydraulic lines 6, 7 connect the hydraulic pump 4 and the hydraulic motor 5 and constitute for the hydraulic motor 5 according to the drive direction of the hydrostatic transmission 3 a supply line 6 and a return line 7. In at least one of the two hydraulic lines 6, 7 a throttle valve 16 is arranged being adjustable in its throttle cross section which, if the corresponding hydraulic line 7 is a return line 7 for hydraulic fluid under high pressure towards the hydraulic pump 4 is being adaptable in its throttle cross section dynamically such that the adjustable hydraulic power in return line 7 downstream of throttle valve 16 at any time during a coasting mode corresponds to the maximum power being supportable at the drive motor 2 in consideration of the power consumption of auxiliary consumers 100 and power losses.

    摘要翻译： 由驱动电动机2驱动的静液压变速器3的减速方法，该驱动电动机2包括闭合液压回路，其中配置有与驱动电机2机械连接的液压泵4和液压马达5。 两个液压管线6,7连接液压泵4和液压马达5，并根据静液压传动装置3的供给管线6和返回管线7的驱动方向构成液压马达5.在两个液压马达5中的至少一个 液压管路6,7在其节流横截面上布置节流阀16，如果对应的液压管路7是液压泵4在高压下的液压流体的回流管线7，其节气门截面可适应 动态地使得在滑行模式期间的任何时间在节流阀16的下游的返回管线7中的可调节液压功率对应于考虑到辅助消耗器100的功率消耗和功率损耗的驱动电机2可支持的最大功率。