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    Working machine
    5.
    发明授权
    Working machine 有权

    公开(公告)号：US11635141B2

    公开(公告)日：2023-04-25

    申请号：US17394612

    申请日：2021-08-05

    申请人： KUBOTA CORPORATION

    发明人： Ryota Hamamoto ,  Kazuki Ueda ,  Daiki Abe ,  Kohei Nagao

    IPC分类号： F16H61/47 ,  F16H61/421 ,  E02F9/22 ,  F16H61/66

    摘要： In a working machine, a traveling pump is driven by a prime mover to rotate a traveling motor by fluid therefrom. The traveling motor has a rotation speed shiftable between a lower first speed and a higher second speed. A traveling change-over valve is shiftable between a first state where the rotation speed of the traveling motor is set to the first speed and a second state where the rotation speed of the traveling motor is set to the second speed. A controller performs a shock-mitigation for reducing a rotation speed of the prime mover when the traveling change-over valve is shifted from the second state to the first state. The controller determines a reduction amount of rotation speed of the prime mover reduced by the shock mitigation based on a difference between a target rotation speed of the prime mover and an actual rotation speed of the prime mover.

    Hydraulic control device
    6.
    发明授权
    Hydraulic control device 有权

    公开(公告)号：US11608887B2

    公开(公告)日：2023-03-21

    申请号：US17094832

    申请日：2020-11-11

    申请人： Honda Motor Co., Ltd.

    发明人： Makito Nakasone ,  Koji Nakamura ,  Norihiro Akiyoshi

    IPC分类号： F16H61/00 ,  F16H57/04 ,  F16H61/02 ,  F16H61/4008 ,  F16H61/66

    摘要： In a hydraulic control device switchable between a first state in which a first oil is supplied from a first pump to a hydraulic operation part via a bypass valve and a second state in which the first oil supplied from the first pump is pressurized by using the second pump and the pressurized first oil is supplied, as a second oil, to the hydraulic operation part, control that adds a correction hydraulic pressure of a predetermined amount to the hydraulic pressure of the oil discharged from a valve for adjusting the pressure of the oil supplied to the hydraulic operation part is performed when the second state is switched to the first state due to a stop or a low rotation state of the second pump.

    Method for controlling power transmission device and power transmission device
    8.
    发明授权
    Method for controlling power transmission device and power transmission device 有权

    公开(公告)号：US11454317B2

    公开(公告)日：2022-09-27

    申请号：US16957740

    申请日：2017-12-28

    申请人： Nissan Motor Co., Ltd.

    发明人： Ryohey Toyota

    IPC分类号： F16H61/662 ,  F16H9/18 ,  F16H61/00 ,  F16H61/66

    摘要： A method controls a power transmission device including a continuously variable transmission, an electric oil pump provided in a first oil passage connecting primary and secondary pulley oil chambers of the continuously variable transmission, and a switching valve provided at a branch point between the first oil passage and a second oil passage that branches from the first oil passage between the electric oil pump and the primary pulley oil chamber and that is connected to an oil reservoir. A third oil passage branches from the first oil passage between the electric oil pump and the secondary pulley oil chamber. The method makes a magnitude of a hydraulic pressure difference between the third oil passage and the first oil passage one the side of the primary pulley oil chamber smaller than a prescribed threshold value when the switching valve switches between a first position and a second position.