Patents by Inventor Seung Sam Baek

Seung Sam Baek has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10174835
    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.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: January 8, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young Min Yoon, Seung Sam Baek
  • Patent number: 9982778
    Abstract: A diagnostic method for shifting an actuator of a transmission may include accumulating, by a controller, a damage index for an applied current when a current is applied to the actuator of the transmission, and determining, by the controller, whether the accumulated damage index exceeds a predetermined reference index and when it is determined that the accumulated damage index exceeds the predetermined reference index, determining the actuator as a failure.
    Type: Grant
    Filed: May 20, 2015
    Date of Patent: May 29, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Young Min Yoon, Seung Sam Baek
  • Publication number: 20180010686
    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.
    Type: Application
    Filed: September 25, 2017
    Publication date: January 11, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Young Min YOON, Seung Sam BAEK
  • Patent number: 9822831
    Abstract: A method for learning a touch point of a clutch in a Dual Clutch Transmission (DCT) vehicle includes a synchronization determination step, a drive shaft slip inducement step in which the controller induces a clutch of the drive shaft to slip, a non-drive shaft torque application step in which the controller applies torque to a clutch of the non-drive shaft, and a touch point learning step in which, while the speed of the non-drive input shaft follows the engine speed in the non-drive shaft torque application step, the controller searches for a certain point at which the speed of the non-drive input shaft changes and differs from the speed of the drive input shaft, and learns the point as the touch point of the clutch of the non-drive shaft.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: November 21, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Sung Hyun Cho, Seung Sam Baek, Ho Young Lee
  • Patent number: 9821797
    Abstract: A control method of a hybrid vehicle includes: confirming whether or not the driving mode of the vehicle is an EV mode when a controller senses shift of the position of a shift lever from the position R to the position D or from the position D to the position R; applying reverse-directional motor torque to a motor through the controller so that a motor speed is synchronized with the speed of an engagement-side clutch, as a result of confirmation of the driving mode, if the driving mode of the vehicle is the EV mode; and executing normal driving of the vehicle by applying regular-directional motor torque to the motor through the controller after synchronization of the motor speed with the engagement-side clutch speed.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: November 21, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Young Min Yoon, Jin Sung Kim, Seung Sam Baek, Seong Hwan Cheong
  • Patent number: 9738275
    Abstract: The present disclosure provides a driving control method for hybrid type vehicles with a DCT. The method includes: receiving the motor speed from a driving motor; when abnormality of the motor speed is detected, requesting driving of an engine and determining whether an engine clutch is engaged; if it is determined that the engine clutch is released, controlling a clutch of a current driving stage using a clutch torque higher than a transmission input torque; controlling the current driving stage to be a limp home driving stage set in advance to be in a limp home driven status.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: August 22, 2017
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Sung Hyun Cho, Ho Young Lee, So Young Lee, Seung Sam Baek, Ho Sung Kim, Seong Hwan Cheong, Young Min Yoon
  • Publication number: 20170158190
    Abstract: The present disclosure provides a driving control method for hybrid type vehicles with a DCT. The method includes: receiving the motor speed from a driving motor; when abnormality of the motor speed is detected, requesting driving of an engine and determining whether an engine clutch is engaged; if it is determined that the engine clutch is released, controlling a clutch of a current driving stage using a clutch torque higher than a transmission input torque; controlling the current driving stage to be a limp home driving stage set in advance to be in a limp home driven status.
    Type: Application
    Filed: April 6, 2016
    Publication date: June 8, 2017
    Applicant: Hyundai Motor Company
    Inventors: Sung Hyun CHO, Ho Young LEE, So Young LEE, Seung Sam BAEK, Ho Sung KIM, Seong Hwan CHEONG, Young Min YOON
  • Publication number: 20170138421
    Abstract: A method for learning a touch point of a clutch in a Dual Clutch Transmission (DCT) vehicle includes a synchronization determination step, a drive shaft slip inducement step in which the controller induces a clutch of the drive shaft to slip, a non-drive shaft torque application step in which the controller applies torque to a clutch of the non-drive shaft, and a touch point learning step in which, while the speed of the non-drive input shaft follows the engine speed in the non-drive shaft torque application step, the controller searches for a certain point at which the speed of the non-drive input shaft changes and differs from the speed of the drive input shaft, and learns the point as the touch point of the clutch of the non-drive shaft.
    Type: Application
    Filed: March 14, 2016
    Publication date: May 18, 2017
    Inventors: Sung Hyun CHO, Seung Sam BAEK, Ho Young LEE
  • Publication number: 20170101084
    Abstract: A control method of a hybrid vehicle includes: confirming whether or not the driving mode of the vehicle is an EV mode when a controller senses shift of the position of a shift lever from the position R to the position D or from the position D to the position R; applying reverse-directional motor torque to a motor through the controller so that a motor speed is synchronized with the speed of an engagement-side clutch, as a result of confirmation of the driving mode, if the driving mode of the vehicle is the EV mode; and executing normal driving of the vehicle by applying regular-directional motor torque to the motor through the controller after synchronization of the motor speed with the engagement-side clutch speed.
    Type: Application
    Filed: March 7, 2016
    Publication date: April 13, 2017
    Applicant: Hyundai Motor Company
    Inventors: Young Min YOON, Jin Sung KIM, Seung Sam BAEK, Seong Hwan CHEONG
  • Publication number: 20160153552
    Abstract: A diagnostic method for shifting an actuator of a transmission may include accumulating, by a controller, a damage index for an applied current when a current is applied to the actuator of the transmission, and determining, by the controller, whether the accumulated damage index exceeds a predetermined reference index and when it is determined that the accumulated damage index exceeds the predetermined reference index, determining the actuator as a failure.
    Type: Application
    Filed: May 20, 2015
    Publication date: June 2, 2016
    Applicants: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Young Min YOON, Seung Sam Baek
  • Publication number: 20160138709
    Abstract: A method of diagnosing a malfunction in a dual clutch transmission may include determining, by a controller, a difference between a first input speed and a wheel speed output by reflecting a transmission gear ratio on the first input speed, and determining by the controller, a difference between a second input speed and a wheel speed output by reflecting the transmission gear ratio on the second input speed, when the difference between the first input speed and the wheel speed output by reflecting the transmission gear ratio on the first input speed is greater than a first reference value and the difference between the second input speed and the wheel speed output by reflecting the transmission gear ratio on the second input speed is equal to or smaller than a second reference value, diagnosing a first input shaft as having a transmission gear synchromesh failure.
    Type: Application
    Filed: May 20, 2015
    Publication date: May 19, 2016
    Applicants: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Young Min YOON, Seung Sam BAEK
  • Patent number: 9285284
    Abstract: A method of estimating a torque of a transmission clutch may include correcting an error by deducing an engine transient torque based on an engine angular velocity measured using a sensor, an engine static torque deduced using a data map, and a load torque depending on a driving load, deducing an engine angular velocity estimation value based on the engine static torque and the engine transient torque, and deducing a clutch torque estimation value depending on a slip in the transmission clutch from a difference between the engine angular velocity estimation value and the measured engine angular velocity.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: March 15, 2016
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Jin Sung Kim, Seung Sam Baek
  • Patent number: 9145933
    Abstract: A method of adjusting the transmission torque characteristics of a dry clutch may include carrying out adjustment based on learning using a T-S curve that indicates the relationship of the transmission torque to the actuator stroke of the dry clutch, a section of the T-S curve in which inclinations change discontinuously is removed, so that the controllability over the dry clutch is reliable and the feeling of shifting can be improved.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: September 29, 2015
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORP.
    Inventors: Ho Young Lee, Seung Sam Baek, Young Min Yoon
  • Publication number: 20150167759
    Abstract: A method of adjusting the transmission torque characteristics of a dry clutch may include carrying out adjustment based on learning using a T-S curve that indicates the relationship of the transmission torque to the actuator stroke of the dry clutch, a section of the T-S curve in which inclinations change discontinuously is removed, so that the controllability over the dry clutch is reliable and the feeling of shifting can be improved.
    Type: Application
    Filed: September 29, 2014
    Publication date: June 18, 2015
    Applicants: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Ho Young LEE, Seung Sam BAEK, Young Min YOON
  • Publication number: 20150167757
    Abstract: A touch point adjusting method for a double clutch transmission, may include determining amounts of individual adjustment of first and second pressure plates and a center plate depending on temperature, determining an amount of final adjustment of a touch point in consideration of the amounts of the individual adjustment determined at the process of determining the amounts of the individual adjustment, and adjusting the touch point of a corresponding clutch based on the amount of the final adjustment of the touch point determined at the process of determining the amount of the final adjustment of the touch point.
    Type: Application
    Filed: August 26, 2014
    Publication date: June 18, 2015
    Applicants: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Ho Young LEE, Seung Sam BAEK
  • Publication number: 20150149029
    Abstract: A method of estimating a torque of a transmission clutch may include correcting an error by deducing an engine transient torque based on an engine angular velocity measured using a sensor, an engine static torque deduced using a data map, and a load torque depending on a driving load, deducing an engine angular velocity estimation value based on the engine static torque and the engine transient torque, and deducing a clutch torque estimation value depending on a slip in the transmission clutch from a difference between the engine angular velocity estimation value and the measured engine angular velocity.
    Type: Application
    Filed: August 15, 2014
    Publication date: May 28, 2015
    Applicants: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Jin Sung KIM, Seung Sam BAEK
  • Publication number: 20150120217
    Abstract: A method for estimating torque transmission characteristics of a dry type clutch may include a data receiving step for receiving information of an estimated point representing torque transmission of the clutch according to an actuator stroke acquired in real time while a vehicle is travelling, a reference points moving step for moving a series of four reference points selected on an existing line representing a change in the torque transmission of the clutch according to the actuator stroke, based on the received information of the estimated point, and an update step for newly plotting a line representing the change in the torque transmission of the clutch according to the actuator stroke, using the four reference points which have been moved.
    Type: Application
    Filed: June 3, 2014
    Publication date: April 30, 2015
    Applicants: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Ho Young Lee, So Young Lee, Young Min Yoon, Jin Sung Kim, Seung Sam Baek
  • Patent number: 9002605
    Abstract: Slipping of a clutch can be minimized with a method of controlling the clutch different, depending on the current traveling status of the vehicle, when reaccelerating the vehicle with both clutches open before stopping the vehicle with a dual clutch transmission (DCT). The method can improve the sense of shifting by optimizing the inclination of an engine speed.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: April 7, 2015
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Young Min Yoon, Sung Hyun Cho, Joung Chul Kim, Seung Sam Baek
  • Patent number: 8972134
    Abstract: A method of searching for the touch point of a clutch includes a gear release determination step of determining whether the gear of a non-drive shaft has been released after a change of speed, a clutch operation step of, if the gear has been released, engaging a clutch connected to the non-drive shaft up to a current touch point, and a learning step of determining and learning the propriety of the current touch point depending on changes in the speed of the non-drive shaft after the clutch operation step.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: March 3, 2015
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Young Min Yoon, Sung Hyun Cho, Joung Chul Kim, Seung Sam Baek
  • Patent number: 8897980
    Abstract: A method of estimating transmission torque of a dry clutch, may include a) slowly releasing a dry clutch until a slip of the dry clutch occurs, b) acquiring and storing stroke of an actuator and torque of an engine at a starting time point at which the slip of the dry clutch occurs at step a), and c) determining the stroke of the actuator and the transmission torque of the dry clutch at the starting time point at which the slip of the dry clutch occurs, by using the stroke of the actuator and the torque of the engine stored at step b).
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: November 25, 2014
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Young Min Yoon, Seung Sam Baek, Sung Hyun Cho, Ho Young Lee, Joung Chul Kim