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1.发明授权公开(公告)号：US11692625B2
公开(公告)日：2023-07-04
申请号：US17433094
申请日：2019-11-01
申请人： JATCO Ltd
发明人： Masanori Yamazaki , Kouhei Toyohara , Yoshiteru Kanayama , Takashi Saitou , Tadaaki Hiraoka , Satoshi Ohata
CPC分类号： F16H61/66272 , F16H9/18 , F16H59/48 , F16H59/58 , F16H59/66 , F16H61/12 , F16H2061/124 , F16H2061/1272 , F16H2061/6607 , F16H2061/66277
摘要： A continuously variable transmission includes a primary pulley, a secondary pulley, a metal belt and a controller. The metal ring includes a ring and a plurality of elements bundled by the ring. The elements have respective receiving portions opening in a radial direction of the metal belt and receive the ring in the receiving portions. Assuming a direction perpendicular to a circumferential direction and a radial direction of the metal belt as a lateral direction L, the controller executes a falling-off countermeasure control of the element when a relative movement of the element in the lateral direction L with respect to the ring is detected or a presence of an action of a force on the element which causes such relative movement is detected.
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公开(公告)号：US10001199B2
公开(公告)日：2018-06-19
申请号：US15557612
申请日：2015-03-18
发明人： Chengwu Duan , Ying Huang
IPC分类号： F16H9/12 , F16H61/662
CPC分类号： F16H9/125 , F16H9/12 , F16H61/66272 , F16H2061/66277
摘要： A continuously variable transmission (CVT) (14) includes a drive pulley (18), a driven pulley (20), and an endless rotatable device (22) coupled between the drive and driven pulleys (18, 20). The drive pulley (18) and the driven pulley (20) each include pulley teeth (19T, 21T), and the endless rotatable device (22) includes device teeth (22T). A controller (50) can control the operation of the CVT and can execute the following instructions: (a) receiving a torque request while the device teeth (22T) are mating with the pulley teeth (19T, 21T); (b) determining whether the torque request direction is opposite to the input torque direction; (c) determining whether a current clamping force applied by an actuator (28, 30) to the drive pulley (18) is sufficient to change the direction of the torque transmitted by the drive pulley (18); and (d) commanding the actuator (28; 30) to increase the current clamping force when the current clamping force is not sufficient to change the direction of the torque transmitted by the drive pulley (18).
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公开(公告)号：US20170219096A1
公开(公告)日：2017-08-03
申请号：US15329726
申请日：2015-06-24
申请人： JATCO LTD , NISSAN MOTOR CO., LTD.
发明人： Kosuke ABE , Tomoyuki SUWABE , Shin TSUKAMOTO
IPC分类号： F16H61/662 , F16H61/12 , F16H59/48 , F16H59/46 , F16H59/42
CPC分类号： F16H61/66272 , F16H59/40 , F16H59/42 , F16H59/46 , F16H59/48 , F16H61/12 , F16H2059/405 , F16H2061/1284 , F16H2061/66277
摘要： A control device for a continuously variable transmission includes a wheel speed difference sensing section configured to sense a wheel speed difference between the driving wheel and the driven wheel from a detection value of the first rotation speed sensor and a detection value of the second rotation speed sensor; and a clamping force increasing section configured to increase a clamping force for sandwiching a belt of the continuously variable transmission by a pulley when the wheel speed difference becomes equal to or greater than a first predetermined value, relative to a case where the wheel speed difference is smaller than the first predetermined value.
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公开(公告)号：US09618114B2
公开(公告)日：2017-04-11
申请号：US14773021
申请日：2013-06-05
发明人： Kyohei Suzumura , Shinya Toyoda , Kazuya Ishiizumi , Akira Hino , Sei Kojima
IPC分类号： F16H61/662 , F16H61/00 , F16D48/06 , F16H61/688 , F16H61/66 , F16H61/02
CPC分类号： F16H61/66272 , F16D48/066 , F16D2500/1026 , F16D2500/10412 , F16D2500/1088 , F16D2500/30426 , F16D2500/30816 , F16D2500/30825 , F16D2500/3101 , F16D2500/3127 , F16D2500/50236 , F16D2500/50858 , F16D2500/70252 , F16D2500/70282 , F16D2500/70406 , F16H61/0031 , F16H61/0262 , F16H61/688 , F16H2061/6618 , F16H2061/66277
摘要： A hydraulic control system for a vehicle having a continuously variable transmission in which a torque transmitting capacity thereof is changed hydraulically, and an engagement device which is connected to the continuously variable transmission in series and in which a torque transmitting capacity thereof is changed hydraulically. The hydraulic control system comprises a selecting means that selects a command pattern for setting an engagement pressure of the engagement device out of a plurality of patterns when an initial pressure is lower than a steady pressure for a normal running of the vehicle. The selecting means is configured to select the command pattern in such a manner that the torque transmitting capacity of the engagement device does not exceeds the torque transmitting capacity of the continuously variable transmission, based on at least any of conditions of the initial pressure that is lowered to be lower than the steady pressure, and a rotational speed of the continuously variable transmission.
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公开(公告)号：US09556953B2
公开(公告)日：2017-01-31
申请号：US14655896
申请日：2013-12-24
申请人： ROBERT BOSCH GMBH
CPC分类号： F16H61/0206 , F16H61/66272 , F16H63/065 , F16H2061/66277
摘要： A hydraulically actuated continuously variable transmission (1) with two pulleys (5, 6), a drive belt (4) in frictional contact with these pulleys (5, 6) and a control device that includes at least two pressure chambers (8, 9) that are both associated with one pulley (6) and that are arranged such that a clamping force (Fs) that is exerted on the drive belt (4) by that one pulley (6) during operation of the transmission 1 is determined by the difference between the two pressures (Pline, Pcomp) that are respectively exerted therein and that are respectively actively controlled by a respective pressure control valve (13; 40) of the control device.
摘要翻译： 一种具有两个滑轮（5,6）的液压致动无级变速器（1），与这些滑轮（5,6）摩擦接触的驱动皮带（4）和包括至少两个压力室（8,9）的控制装置 ），其与一个滑轮（6）相关联，并且被布置成使得在变速器1的操作期间由该一个滑轮（6）施加在驱动皮带（4）上的夹紧力（Fs）由 分别施加在其中并分别由控制装置的相应压力控制阀（13; 40）主动控制的两个压力（Pline，Pcomp）之间的差异。
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6.发明申请公开(公告)号：US20160363219A1
公开(公告)日：2016-12-15
申请号：US15121453
申请日：2015-02-17
申请人： JATCO Ltd , NISSAN MOTOR CO., LTD.
发明人： Kiyofumi SASAKI , Youji ITOU , Kosuke ABE
IPC分类号： F16H61/662 , F16H61/00 , F16H9/18 , F16H59/66 , F16H59/72
CPC分类号： F16H61/66272 , F16H9/18 , F16H59/66 , F16H59/72 , F16H61/0021 , F16H61/66259 , F16H2061/66277
摘要： A control device for a continuously variable transmission of a vehicle includes a shift control section being configured to perform a rough road corresponding control to increase the hydraulic pressure to a value larger than the hydraulic pressure at a smooth road judgment at which the smooth road is judged, at a rough road judgment at which the rough road is judged, and when a line-pressure-up control condition is satisfied at the rough road judgment, the line pressure control section being configured to increase the line pressure to be greater than the line pressure when the line-pressure-up control condition is not satisfied.
摘要翻译： 一种用于车辆的无级变速器的控制装置，包括变速控制部，该变速控制部被配置为在平滑的道路判断处判定平滑道路判断时，进行粗路对应的控制，以将液压增加到大于液压的值 在粗暴道路被判断的粗糙道路判断中，并且当在粗暴道路判断下满足线路压力控制条件时，线路压力控制部分被配置为将线路压力增加到大于线路 当线路压力上升控制条件不满足时的压力。
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公开(公告)号：US09441733B2
公开(公告)日：2016-09-13
申请号：US14405289
申请日：2013-05-28
申请人： JATCO LTD , NISSAN MOTOR CO., LTD.
发明人： Seiichiro Takahashi , Takashi Eguchi , Tomohiro Utagawa , Tomoyuki Mizuochi , Hisao Nobu , Kenji Sakakibara , Takahiro Ikeda , Masayuki Shimizu
CPC分类号： F16H61/66272 , F16H9/125 , F16H59/20 , F16H2061/66277
摘要： A transmission controller determines whether a shift is a kickdown, and when the shift is determined as the kickdown, the target line pressure is increased to a first target pressure corresponding to an input torque to a continuously variable transmission increased by the kickdown; the transmission controller then determines whether the line pressure has reached the first target pressure, and if determined that the line pressure has reached the first target pressure, the target line pressure is increased to a second target pressure higher than the first target pressure.
摘要翻译： 变速器控制器确定变速是否是减速，并且当换档被确定为减速时，目标行压力增加到对应于输入扭矩的第一目标压力，所述第一目标压力增加到降档时增加到无级变速器; 变速器控制器然后确定管路压力是否已经达到第一目标压力，并且如果确定管路压力已经达到第一目标压力，则目标管路压力增加到高于第一目标压力的第二目标压力。
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公开(公告)号：US20150240941A1
公开(公告)日：2015-08-27
申请号：US14187365
申请日：2014-02-24
发明人： Zhen J. Zhang , Jesse B. Bradley , Jing Zhou , John E. Marano
IPC分类号： F16H61/662 , F16H61/12
CPC分类号： F16H61/66272 , B60W10/107 , F16H61/12 , F16H61/66259 , F16H2061/66277 , F16H2061/66295 , Y10T477/6237
摘要： A vehicle includes an engine, drive wheels, a continuously variable transmission (CVT), and a controller. The CVT includes an input member connected to the engine, an output member delivering output torque to the wheels, and a variator assembly connecting the input and output members. The controller determines, via a method, an input and output speed of the variator assembly, converts the output speed to an equivalent input speed using a calibrated variator speed ratio, and calculates a gross slip of the variator assembly using the input and equivalent input speeds. A gross slip flag is set only when the gross slip exceeds a calibrated slip value for a predetermined duration. A CVT assembly includes the controller, input and output members, and variator assembly. The variator assembly may include drive and driven pulleys, a drive mechanism connecting the pulleys, and an actuator applying a clamping force to one of the pulleys.
摘要翻译： 车辆包括发动机，驱动轮，无级变速器（CVT）和控制器。 CVT包括连接到发动机的输入构件，向车轮输出扭矩的输出构件以及连接输入和输出构件的变速组件。 控制器通过方法确定变换器组件的输入和输出速度，使用校准的变速器速比将输出速度转换为等效输入速度，并使用输入和等效输入速度计算变速组件的总滑动 。 只有当毛滑差超过预定持续时间的校准滑差值时，才设置毛滑标志。 CVT组件包括控制器，输入和输出构件以及变速器组件。 变速器组件可以包括驱动和从动皮带轮，连接皮带轮的驱动机构和向其中一个滑轮施加夹紧力的致动器。
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公开(公告)号：US09080644B2
公开(公告)日：2015-07-14
申请号：US13948212
申请日：2013-07-23
发明人： Shigeru Kanehara
IPC分类号： F16H9/12 , F16H61/662
CPC分类号： F16H9/125 , F16H61/66272 , F16H2061/66277
摘要： In an apparatus for controlling a continuously variable transmission, a transmission ratio, an input shaft rotational speed and an input torque, etc., are detected, an axial thrusts of the drive and driven pulleys are detected therefrom, an inter-shaft force is detected, a friction coefficient of the driven pulley including at least a radial component of the friction coefficient μRDN is calculated in accordance with predetermined relational equations, a target axial thrust of the driven pulley is calculated based on at least the friction coefficient and the axial thrust of the driven pulley is controlled based on the calculated target axial thrust.
摘要翻译： 在用于控制无级变速器的装置中，检测传动比，输入轴转速和输入转矩等，检测驱动和从动皮带轮的轴向推力，检测到轴间力 根据预定的关系式计算包括至少摩擦系数μRDN的径向分量的从动皮带轮的摩擦系数，至少基于摩擦系数和轴向推力来计算从动皮带轮的目标轴向推力 基于所计算的目标轴向推力来控制从动皮带轮。
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10.发明授权公开(公告)号：US09046174B2
公开(公告)日：2015-06-02
申请号：US14391370
申请日：2013-01-25
发明人： Shigeru Kanehara , Atsushi Fujikawa
IPC分类号： F16H61/662 , F16H61/66
CPC分类号： F16H61/66272 , F16H2061/6604 , F16H2061/66277
摘要： A coefficient of friction correction device for a belt-type continuously variable transmission is provided in which the coefficient of friction corrector calculates a coefficient of friction correction factor from the coefficient of friction calculated by the coefficient of friction calculator for a predetermined gear ratio and the default value of the coefficient of friction stored in the coefficient of friction map for the predetermined gear ratio, and uniformly corrects the default value of the coefficient of friction stored in the coefficient of friction map for each gear ratio using the coefficient of friction correction factor. This enables the default values of the coefficient of friction of all the coefficient of friction maps to be corrected by calculating just one coefficient of friction correction factor, and enables the reliability of the corrected default value of the coefficient of friction to be ensured.
摘要翻译： 提供了一种用于带式无级变速器的摩擦系数修正装置，其中摩擦系数校正器根据由摩擦系数计算器计算的预定齿轮比和默认值的摩擦系数计算摩擦系数 存储在摩擦系数中的摩擦系数的值为预定的齿轮比，并且使用摩擦系数修正系数均匀地校正存储在摩擦系数的摩擦系数的默认值。 这使得通过仅计算一个摩擦系数修正系数来校正所有摩擦系数的摩擦系数的默认值，并且能够确保修正的摩擦系数的默认值的可靠性。
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