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    Control device of vehicle power transmission device
    1.
    发明授权
    Control device of vehicle power transmission device 有权

    公开(公告)号：US10451126B2

    公开(公告)日：2019-10-22

    申请号：US15974742

    申请日：2018-05-09

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Yusuke Ohgata ,  Hiroki Kondo ,  Makoto Sawada ,  Shinya Toyoda ,  Shuji Moriyama ,  Kyohei Suzumura ,  Hiroki Takeda

    IPC分类号： F16D48/10 ,  F16H61/02 ,  F16D48/06 ,  F16H61/66 ,  F16H59/70 ,  F16D48/02 ,  F16H61/12 ,  F16H37/02

    摘要： A control device of a vehicle power transmission device including a first power transmission path transmitting power by engaging a first clutch, a sub-clutch and a second power transmission path transmitting power by engaging a second clutch each disposed between an engine and drive wheels and parallel to each other, the device including a fail-safe valve for preventing simultaneous engagement of the first and second clutches, the fail-safe valve configured to be switched to a fail-safe spool position preventing simultaneous engagement of the first and second clutches by a hydraulic pressure of a hydraulic fluid supplied to the first clutch or an output pressure of a first electromagnetic valve controlling the hydraulic pressure and the hydraulic pressure of the hydraulic fluid supplied to the second clutch or an output pressure of a second electromagnetic valve controlling the hydraulic pressure, the second electromagnetic valve configured to increase the output pressure.

    Control apparatus for vehicle transmission
    2.
    发明授权
    Control apparatus for vehicle transmission 有权

    公开(公告)号：US10047859B2

    公开(公告)日：2018-08-14

    申请号：US15313647

    申请日：2015-05-27

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Kunio Hattori ,  Daisuke Inoue ,  Hiroki Kondo ,  Kenji Matsuo ,  Mitsuhiro Fukao

    IPC分类号： F16H61/662 ,  F16H37/02 ,  F16H37/08

    摘要： When a line pressure is dominated (determined) by at least one of a primary pressure and a secondary pressure during idling of a continuously variable transmission, the hydraulic pressure that is applied to at least one of pulleys, to which the hydraulic pressure larger than a clutch pressure is applied, is reduced. On the other hand, when the line pressure is dominated by the clutch pressure during idling of the continuously variable transmission, the speed gear ratio of the continuously variable transmission is controlled to a lowest speed gear ratio.

    Control apparatus for power transmission system
    5.
    发明授权
    Control apparatus for power transmission system 有权

    公开(公告)号：US10539229B2

    公开(公告)日：2020-01-21

    申请号：US15526425

    申请日：2015-11-17

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Daisuke Inoue ,  Akihide Ito ,  Kazuya Sakamoto ,  Hiroki Kondo ,  Mitsuhiro Fukao ,  Kenji Matsuo

    IPC分类号： F16H61/04 ,  F16H61/70 ,  F16H37/02 ,  F16H37/08

    摘要： An engagement operation of a dog clutch is carried out while an engagement operation of a second clutch is being carried out, that is, during a situation that an uplock is hard to occur because of a phase shift generated between meshing counterpart members of the dog clutch. Thus, the dog clutch is easily engaged, and it is possible to facilitate preparation for transmission of power through a first power transmission path. If the dog clutch is not engaged, the second clutch is engaged and a second power transmission path is established, so it is possible to start moving a vehicle by transmitting power through the second power transmission path. Thus, when the dog clutch is in a non-engaged state at the time of an N-to-D shift during a stop of the vehicle, it is possible to ensure the startability of the vehicle.

    Vehicle control system and vehicle control method
    6.
    发明授权
    Vehicle control system and vehicle control method 有权
    车辆控制系统和车辆控制方法

    公开(公告)号：US09540012B2

    公开(公告)日：2017-01-10

    申请号：US14785260

    申请日：2013-04-16

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Kenji Matsuo ,  Yusuke Ohgata ,  Daisuke Inoue ,  Atsushi Ayabe ,  Motonori Kimura ,  Shuhei Ishikawa ,  Akira Hino ,  Hiroki Kondo

    IPC分类号： B60W10/107 ,  B60W10/11 ,  B60W30/188 ,  F16H61/662 ,  F16H37/02 ,  B60W10/02 ,  B60W10/10 ,  F16H61/66

    CPC分类号： B60W30/188 ,  B60W10/02 ,  B60W10/10 ,  F16H37/022 ,  F16H61/66259 ,  F16H2037/026 ,  F16H2061/6603

    摘要： A vehicle control system and method is applied to a vehicle including: a continuously variable transmission for changing a speed ratio continuously that is disposed between an input shaft and an output shaft; a geared transmission that is disposed parallel to the continuously variable transmission, and that is adapted to establish a speed ratio that cannot be established by the continuously variable transmission; and a friction clutch that is brought into engagement to switch a torque transmission route from a route including the geared transmission to a route including the continuously variable transmission. The vehicle control system is configured to start a speed change operation of the continuously variable transmission before a commencement of clutch-to-clutch shifting between the friction clutches when switching the torque transmission route from the route including the geared transmission to the route including the continuously variable transmission.

    摘要翻译： 一种车辆控制系统和方法应用于车辆，包括：无级变速器，用于连续地改变设置在输入轴和输出轴之间的速比; 与所述无级变速器平行配置的齿轮传动装置，其适于建立由所述无级变速器不能建立的速比; 以及摩擦离合器，其接合以将扭矩传递路线从包括所述齿轮传动的路线切换到包括所述无级变速器的路线。 车辆控制系统被配置为在将转矩传递路径从包括齿轮传动的路线切换到包括连续的路线的路线之前，在摩擦离合器之间的离合器离合器转换开始之前开始无级变速器的变速操作 变速传动。