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    METHOD OF DIAGNOSING MALFUNCTION IN DUAL CLUTCH TRANSMISSION
    5.
    发明申请
    METHOD OF DIAGNOSING MALFUNCTION IN DUAL CLUTCH TRANSMISSION 审中-公开

    公开(公告)号：US20180010686A1

    公开(公告)日：2018-01-11

    申请号：US15714895

    申请日：2017-09-25

    Applicant: Hyundai Motor Company ,  Kia Motors Corporation

    Inventor： Young Min YOON ,  Seung Sam BAEK

    IPC: F16H61/12 ,  F16H61/688 ,  F16H61/00

    CPC classification number: F16H61/12 ,  F16H61/688 ,  F16H2061/009 ,  F16H2061/1216 ,  F16H2061/1224 ,  F16H2061/1272 ,  F16H2061/1284

    Abstract: Disclosed is a method of diagnosing a malfunction in a dual clutch transmission (DCT) attributable to a gear synchromesh failure, without an output shaft speed sensor. The method includes: calculating, a difference (referred to as a first difference) between a first input shaft speed and the product of a wheel speed and a first gear ratio; a difference (referred to as a second difference) between a second input shaft speed and the product of a wheel speed and a second gear ratio; diagnosing a first input shaft as having a transmission gear synchromesh failure when the first difference is greater than a first reference value and the second difference is equal to or smaller than a second reference value; and performing control such that a gear shifting operation is performed using only a second input shaft when the first input shaft is diagnosed as having a transmission gear synchromesh failure.

    Shift-by-wire control apparatus
    7.
    发明授权
    Shift-by-wire control apparatus 有权
    线控线控制装置

    公开(公告)号：US09574658B2

    公开(公告)日：2017-02-21

    申请号：US14853805

    申请日：2015-09-14

    Applicant: Fuji Jukogyo Kabushiki Kaisha

    Inventor： Koichiro Terai ,  Taichi Tsuji

    IPC: F16H61/12 ,  F16H59/50 ,  F16H63/48

    CPC classification number: F16H61/12 ,  F16H59/50 ,  F16H63/48 ,  F16H2061/1208 ,  F16H2061/1232 ,  F16H2061/1284

    Abstract: A shift-by-wire control apparatus includes: a first detector that detects a first vehicle state; a second detector that detects a second vehicle state; an auto parking controller that executes an auto parking control irrespective of a state of a shift range, on conditions that detection results derived from the first and second detectors satisfy respective predetermined conditions; and a malfunction determining unit that determines that the first detector is malfunctioning, on a condition that the first detector fails to detect a change in the first vehicle state. The auto parking controller executes, based on the detection result derived from the second detector, the auto parking control irrespective of the detection result derived from the first detector, on a condition that the first detector is determined by the malfunction determining unit as malfunctioning.

    Abstract translation: 线控换档控制装置包括：第一检测器，其检测第一车辆状态; 检测第二车辆状态的第二检测器; 在从第一和第二检测器得到的检测结果满足各个预定条件的条件下，执行自动驻车控制而不考虑移动范围的状态的自动停车控制器; 以及在第一检测器不能检测到第一车辆状态的变化的条件下，确定第一检测器发生故障的故障确定单元。 在第一检测器被故障确定单元确定为故障的情况下，自动停车控制器基于从第二检测器导出的检测结果执行自动停车控制，而不管从第一检测器导出的检测结果如何。

    Vehicle
    10.
    发明申请
    Vehicle 有权

    公开(公告)号：US20160076639A1

    公开(公告)日：2016-03-17

    申请号：US14802520

    申请日：2015-07-17

    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

    Inventor： Kenji Uchida ,  Ryoji Sato

    IPC: F16H61/02 ,  B60W20/00 ,  B60W10/10

    CPC classification number: F16H61/0213 ,  B60W10/10 ,  B60W20/30 ,  F16H61/12 ,  F16H2061/0087 ,  F16H2061/0223 ,  F16H2061/1224 ,  F16H2061/1284 ,  Y02T10/7258

    Abstract: A vehicle includes a motor, a resolver which detects a rotation angle of the motor, an automatic transmission which shifts rotation of the motor and transmits the shifted rotation to a drive shaft, and an ECU which performs learning control for correcting an error of the resolver and shift control of the automatic transmission. The ECU controls the automatic transmission such that, when the learning control is performed, a gear ratio becomes higher at a prescribed vehicle speed, than that when the learning control is not performed. By controlling the automatic transmission as described above, even when the vehicle is traveling at a low speed, a rotation speed of the motor easily reaches a rotation speed at and above which the learning control of the resolver can be performed. Accordingly, an opportunity to perform the learning control of the resolver can be obtained early.

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