公开(公告)号：US20210270332A1

公开(公告)日：2021-09-02

申请号：US16996390

申请日：2020-08-18

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Sung Hyun CHO ,  Dong Hyup KANG

IPC: F16D48/06

Abstract: A clutch control method for a vehicle may include determining, by a controller, whether a tip-in has occurred during an in-gear state of a transmission; increasing the clutch slip rapidly to a first target slip by the controller; feedback-controlling, by the controller, so that the clutch slip is reduced toward a second target slip during a predetermined first control time period after the increasing of the clutch slip; controlling, by the controller, a clutch of the transmission with a first target slip angular acceleration after the predetermined first control time period has elapsed; feedback-controlling by the controller so that target slip angular acceleration of the clutch gradually becomes zero during a predetermined second control time period; and feedback-controlling by the controller so that the clutch slip becomes a third target slip after the predetermined second control time period has elapsed.

公开(公告)号：US20190092311A1

公开(公告)日：2019-03-28

申请号：US15827534

申请日：2017-11-30

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Sung Hyun CHO ,  Seong Hwan CHEONG

IPC: B60W10/02 ,  B60W30/19

Abstract: The present disclosure relates to a technique for improving durability of a clutch and shifting stability. The present disclosure provides a method of controlling a clutch of an automated manual transmission (AMT) vehicle, which reduces a micro-slip control time in order to improve durability of the clutch by performing a full-lock control of the clutch after slip control for learning a clutch characteristic curve. Additionally, the method shortens time to open the clutch for a subsequent shifting by predicting the time when a shift restarts after the full-lock control and by resuming the micro-slip control.

公开(公告)号：US20180163858A1

公开(公告)日：2018-06-14

申请号：US15639359

申请日：2017-06-30

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Sung Hyun CHO

IPC: F16H61/12 ,  F16H61/32

CPC classification number: F16H61/12 ,  F16H61/32 ,  F16H2061/1268

Abstract: A shift control method for a vehicle when CAN communication fails is provided to make a transmission control unit communicate with a motor controller via an LIN communication line. The shift control method includes: a failure sensing step of sensing, by the transmission control unit, whether the CAN communication fails; a shift stage sensing step of sensing, by the transmission control unit, whether a target shift stage is changed when the CAN communication failure is sensed as a performance result of the failure sensing step; and a gear engaging step of controlling, by the transmission control unit, the motor controller to drive a gear actuator through an LIN communication line so as to engage a target stage gear when the target shift stage is changed as the performance result of the shift stage sensing step.

公开(公告)号：US20170356546A1

公开(公告)日：2017-12-14

申请号：US15332725

申请日：2016-10-24

Applicant: HYUNDAI MOTOR COMPANY

Inventor： Sung Hyun CHO ,  Ju Hyun NAM

IPC: F16H61/688 ,  B60W20/00

CPC classification number: F16H61/688 ,  B60K6/48 ,  B60K6/547 ,  B60K2006/4825 ,  B60W10/02 ,  B60W10/113 ,  B60W20/00 ,  B60W20/40 ,  B60W30/18127 ,  B60W2510/0695 ,  B60W2510/088 ,  B60W2510/103 ,  B60W2710/027 ,  Y10S903/945 ,  Y10S903/946

Abstract: 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.

公开(公告)号：US20170122388A1

公开(公告)日：2017-05-04

申请号：US15053753

申请日：2016-02-25

Applicant: HYUNDAI MOTOR COMPANY

Inventor： Sung Hyun CHO ,  Ho Sung KIM ,  Ho Young LEE ,  Jin Woo LEE

IPC: F16D48/08

CPC classification number: F16D48/08 ,  F16D48/06 ,  F16D2500/10412 ,  F16D2500/3026 ,  F16D2500/304 ,  F16D2500/3069 ,  F16D2500/5018 ,  F16D2500/5023 ,  F16D2500/50233 ,  F16D2500/50245 ,  F16D2500/50251 ,  F16D2500/7041

Abstract: A method of preventing a vehicle clutch from sticking includes a wear compensation actuation step of actuating a wear compensation device in conjunction with engagement actuation of a clutch actuator after an ignition is turned off when an actuation condition of the wear compensation device is satisfied, and a clutch control step of controlling a clutch position so that the clutch position returns to a disengaged state of the clutch actuator by reactuating the wear compensation device, when a clutch position based on an amount of variation in an actuation length of the actuation rod fails to return to the disengaged state of the clutch actuator during returning of the engaged clutch actuator.

公开(公告)号：US20160377129A1

公开(公告)日：2016-12-29

申请号：US14937249

申请日：2015-11-10

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Sung Hyun CHO ,  Hwan HUR

IPC: F16D48/06

CPC classification number: F16D48/068 ,  F16D48/06 ,  F16D2500/10412 ,  F16D2500/106 ,  F16D2500/30406 ,  F16D2500/30412 ,  F16D2500/30417 ,  F16D2500/30421 ,  F16D2500/30428 ,  F16D2500/3067 ,  F16D2500/3068 ,  F16D2500/30806 ,  F16D2500/30818 ,  F16D2500/50236 ,  F16D2500/50251 ,  F16D2500/70426 ,  Y02T10/76

Abstract: The present disclosure relates to a method and apparatus for learning a clutch torque of a Dual Clutch Transmission (DCT) The method includes judging whether shifting begins, controlling torque transmission of a coupling-side clutch and a release-side clutch to cross each other while following a coupling-side target clutch torque when shifting begins, and detecting and storing a learning value, after the controlling has begun, using a function determined by the relationship between an average value of an engine angular acceleration and a coupling-side shifter input-shaft angular acceleration, engine rotation inertia, and a torque compensated by slip control of the coupling-side clutch.

Abstract translation: 本离合器技术领域本公开涉及一种用于学习双离合器变速器（DCT）的离合器扭矩的方法和装置。该方法包括判断变速是否开始，控制联轴器侧离合器和释放侧离合器的扭矩传递彼此交叉，同时 在变速开始之后遵循联接侧目标离合器扭矩，并且在开始控制之后，使用由发动机角加速度的平均值和耦合侧换档器输入 - 输出装置之间的关系确定的功能来检测和存储学习值， 轴角加速度，发动机旋转惯量以及通过联轴器侧离合器的滑动控制补偿的扭矩。

公开(公告)号：US20220034378A1

公开(公告)日：2022-02-03

申请号：US17096737

申请日：2020-11-12

Applicant: Hyundai Motor Company ,  Kia Motors Corporation

Inventor： Sung Hyun CHO

IPC: F16D66/00

Abstract: A system and method of accurately evaluating the performance of a vehicle device having a friction component, including a brake disc, a clutch disc, or the like, may be achieved by predicting the accurate friction coefficient of the friction component in consideration of changes in the temperature, rotation speed, and hydraulic pressure of the friction component, and determining the operating torque of the vehicle device or system having the friction component through reflecting the predicted friction coefficient, during the performance evaluation simulation process of the vehicle device including the friction component.

公开(公告)号：US20180015915A1

公开(公告)日：2018-01-18

申请号：US15334098

申请日：2016-10-25

Applicant: Hyundai Motor Company

Inventor： Sung Hyun CHO ,  Ju Hyun NAM ,  Seong Hwan CHEONG

IPC: B60W10/08 ,  B60W30/19 ,  B60W10/02 ,  B60W10/113

CPC classification number: B60W20/15 ,  B60K6/442 ,  B60K6/547 ,  B60K2006/4825 ,  B60W10/02 ,  B60W10/08 ,  B60W10/113 ,  B60W20/30 ,  B60W30/18072 ,  B60W30/181 ,  B60W30/19 ,  B60W2510/0241 ,  B60W2510/081 ,  B60W2510/1015 ,  B60W2520/10 ,  B60W2550/142 ,  B60W2710/021 ,  B60W2710/025 ,  B60W2710/081 ,  B60W2710/083 ,  B60W2710/1005 ,  Y10S903/93 ,  Y10S903/945 ,  Y10S903/946

Abstract: A shifting control method for hybrid vehicles may include shifting request determining, by a controller, of determining whether power off down shifting to a lowest stage is requested, clutch releasing, by the controller, of controlling a release clutch to be released, when it is determined that a gradient of a road exceeds a reference value and a vehicle speed exceeds a reference vehicle speed when the shifting is requested as the shifting request determination result, synchronizing, by the controller, of controlling a motor speed to be synchronized with an applying input shaft speed, and clutch engaging, by the controller, of controlling an applying clutch to be engaged.

公开(公告)号：US20170369068A1

公开(公告)日：2017-12-28

申请号：US15363921

申请日：2016-11-29

Applicant: Hyundai Motor Company

Inventor： Sung Hyun CHO

IPC: B60W30/19 ,  B60W10/113 ,  B60W10/02 ,  B60W10/06

CPC classification number: B60W30/19 ,  B60W10/02 ,  B60W10/06 ,  B60W10/113 ,  B60W2540/10 ,  B60W2710/0644 ,  B60W2710/0661 ,  B60W2710/0666 ,  B60W2710/1005

Abstract: A shift control method for the vehicle with a DCT may include a start determining step of determining, by a TCU, whether the DCT may have entered a power-on down shift inertia phase, a clutch control step of controlling a release-side clutch by determining, by the TCU, a release-side clutch control torque, when the DCT enters the power-on down shift inertia phase, a limit determining step of determining whether the release-side clutch control torque is reduced below a predetermined minimum control torque, while the TCU performs the clutch control step, and an engine-assistance requesting step of requesting an ECU to set an engine-torque rise request amount in proportion to a release-side clutch control torque reduction amount that is additionally required by the TCU, when it is determined in the limit determining step that the release-side clutch control torque is reduced below the minimum control torque.

公开(公告)号：US20170138418A1

公开(公告)日：2017-05-18

申请号：US15067215

申请日：2016-03-11

Applicant: HYUNDAI MOTOR COMPANY

Inventor： Sung Hyun CHO ,  Ho Young LEE

IPC: F16D48/06 ,  F16H63/46

CPC classification number: F16D48/06 ,  F16D13/385 ,  F16D2500/10412 ,  F16D2500/1045 ,  F16D2500/3027 ,  F16D2500/30406 ,  F16D2500/30412 ,  F16D2500/30421 ,  F16D2500/308 ,  F16D2500/30806 ,  F16D2500/30814 ,  F16D2500/30816 ,  F16D2500/3144 ,  F16D2500/31466 ,  F16D2500/50236 ,  F16D2500/50251 ,  F16D2500/70408 ,  F16D2500/7041 ,  F16D2500/70426 ,  F16D2500/7044 ,  F16D2500/70605 ,  F16H3/006 ,  F16H61/0403 ,  F16H61/688 ,  F16H63/46 ,  F16H2061/0087 ,  F16H2061/0459 ,  F16H2061/0462

Abstract: A method for learning a characteristic of a clutch in a DCT vehicle includes a shifting condition determination step for determining whether a shifting condition is satisfied, a synchronization step for partly reducing torque of a disengagement-side clutch in order to synchronize an engine speed with a speed of an engagement-side input shaft when shifting is started when the shifting condition is satisfied, a clutch release determination step for determining whether a slip amount of a disengagement-side clutch exceeds a reference slip amount, and a disengagement-side clutch learning step for updating clutch torque on a characteristic curve of the disengagement-side clutch using the torque of the disengagement-side clutch that is controlled to allow the slip amount of the disengagement-side clutch to exceed the reference slip amount in the clutch release determination step, and for learning the updated clutch torque.