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    Shift Control Method for Vehicle with DCT
    2.
    发明申请
    Shift Control Method for Vehicle with DCT 有权

    公开(公告)号：US20210172518A1

    公开(公告)日：2021-06-10

    申请号：US16834209

    申请日：2020-03-30

    申请人： Hyundai Motor Company ,  Kia Motors Corporation

    发明人： Sung Hyun Cho

    IPC分类号： F16H61/688 ,  F16H59/18 ,  F16H59/44 ,  F16H59/68

    摘要： A shift control method can be used for a vehicle with a dual-clutch transmission (DCT). A controller determines whether or not a power-on upshift is initiated in a state in which a high performance mode has been selected. The controller performs a torque phase in which a coupling-side clutch torque is gradually increased and a release-side clutch torque is gradually released. The coupling-side clutch torque is gradually increased to a target coupling-side clutch torque corresponding to a value obtained by adding a push feel torque to a base torque. The controller performs an inertia phase in which the coupling-side clutch torque is gradually increased while tracing an engine torque such that an engine speed is synchronized with a coupling-side clutch speed. The controller completes speed change through gradual decrease of the coupling-side clutch torque.

    Vehicle start control method
    3.
    发明授权
    Vehicle start control method 有权

    公开(公告)号：US10723355B1

    公开(公告)日：2020-07-28

    申请号：US16434810

    申请日：2019-06-07

    申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

    发明人： Jin Sung Kim ,  Hwan Hur ,  Sung Hyun Cho

    IPC分类号： B60W10/02 ,  B60W10/06 ,  B60W30/18 ,  B60W50/00

    摘要： A vehicle start control method includes: a condition determination step of determining, by a controller, whether or not it is necessary to control an engine torque in addition to a slip control of a clutch when a vehicle has started moving; and an engine control step of controlling, by the controller, the engine torque according to an engine error revolutions per minute (RPM) which is a difference between a target engine RPM and an actually measured engine RPM, when it is necessary to control the engine torque in addition to the slip control of the clutch.

    Clutch control method for vehicle equipped with dual clutch transmission
    4.
    发明授权
    Clutch control method for vehicle equipped with dual clutch transmission 有权

    公开(公告)号：US10605363B2

    公开(公告)日：2020-03-31

    申请号：US16157578

    申请日：2018-10-11

    申请人： Hyundai Motor Company ,  Kia Motors Corporation

    发明人： Sung Hyun Cho

    IPC分类号： F16H61/688 ,  F16D48/06 ,  F16H59/56 ,  F16H59/14 ,  F16H59/70

    摘要： A clutch control method of the vehicle provided with the double clutch transmission may include determining, by the controller, whether a vehicle is travelling at the lowest shifting stage or the highest shifting stage and the pre-engagement of a proximate shifting stage is completed or not; storing a learned driveshaft clutch torque and a current clutch temperature and initiating a timer when it is determined that the learned driveshaft clutch torque is considered reliable by the controller learning the driveshaft clutch torque; determining, by the controller, a plurality of conditions including the passage of time to determine whether a touch point learning of the non-driveshaft clutch is necessary or not; and disengaging, by the controller, the proximate shifting stage of the non-driveshaft to neutral when it is determined that the touch point learning is necessary and performing the touch point learning of non-driveshaft.

    Upshift control method for DCT vehicle
    5.
    发明授权
    Upshift control method for DCT vehicle 有权

    公开(公告)号：US10508736B2

    公开(公告)日：2019-12-17

    申请号：US15984978

    申请日：2018-05-21

    申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

    发明人： Sung Hyun Cho ,  Dong Hyup Kang

    IPC分类号： F16H61/688 ,  F16H59/18 ,  F16H59/48

    摘要： An upshift control method for a dual clutch transmission (DCT) for a vehicle includes: determining, by a controller, whether or not an inertia phase begins when a driver accelerator pedal depression amount increases during power-on upshifting; calculating, by the controller, a first control amount, which is a first final clutch torque for controlling an engaging clutch, when the inner phase begins, in consideration of a difference between a current accelerator pedal depression amount and an accelerator pedal depression amount at beginning of the inertia phase, a difference between the current accelerator pedal depression amount and a maximum value of an accelerator pedal depression amount during the inertia phase elapsed until a present time, and a target engine torque, and controlling, by the controller, the engaging clutch with the final clutch torque calculated in the calculating.

    Shifting control method for hybrid vehicles
    6.
    发明授权
    Shifting control method for hybrid vehicles 有权

    公开(公告)号：US10293809B2

    公开(公告)日：2019-05-21

    申请号：US15644065

    申请日：2017-07-07

    申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

    发明人： Sung Hyun Cho ,  Ju Hyun Nam

    IPC分类号： B60W10/02 ,  B60W10/06 ,  B60W10/08 ,  B60W10/113 ,  B60W20/15 ,  B60W30/18 ,  B60W30/19

    摘要： The present disclosure relates to a shifting control method that improves driving stability by reducing roll-back of a vehicle during the process of shifting on an uphill slope. The shifting control method for a hybrid vehicle includes: determining a degree of roll-back of the vehicle on the basis of a change in the number of revolutions of a transmission input shaft, when power-off down-shifting into a lowest gear is requested; decreasing a disengaging clutch torque, increasing an engaging clutch torque, and increasing a motor torque so that the motor torque follows a desired motor torque, when the degree of roll-back is equal to or greater than a set value; synchronizing a motor speed with an engaging input shaft speed by decreasing the motor torque, when the disengaging clutch torque is equal to or less than a set torque; and finishing the shifting by increasing the motor torque when the synchronization is finished.

    Shifting control method for hybrid vehicles
    7.
    发明授权
    Shifting control method for hybrid vehicles 有权

    公开(公告)号：US10113640B2

    公开(公告)日：2018-10-30

    申请号：US15332725

    申请日：2016-10-24

    申请人： HYUNDAI MOTOR COMPANY

    发明人： Sung Hyun Cho ,  Ju Hyun Nam

    IPC分类号： F16H61/688 ,  B60W20/00

    摘要： The present disclosure provides a shifting control method for hybrid vehicles to reduce the occurrence of a clutch releasing phenomenon due to an excessive change in input torque of a transmission during shifting of the vehicle, including: an entering step of performing, by a controller, a control to enter a torque hand over control in response to power off down shifting; and a rising control step of controlling, by the controller, an engagement side clutch torque to rise to correspond to a changed input torque of a transmission when a change rate in input torque of the transmission is equal to or more than a reference value during the torque hand over process.