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).
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Patent number: 10174835Abstract: 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: GrantFiled: September 25, 2017Date of Patent: January 8, 2019Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Young Min Yoon, Seung Sam Baek
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Patent number: 9982778Abstract: 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: GrantFiled: May 20, 2015Date of Patent: May 29, 2018Assignees: Hyundai Motor Company, Kia Motors Corp.Inventors: Young Min Yoon, Seung Sam Baek
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Publication number: 20180010686Abstract: 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: ApplicationFiled: September 25, 2017Publication date: January 11, 2018Applicants: Hyundai Motor Company, Kia Motors CorporationInventors: Young Min YOON, Seung Sam BAEK
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Patent number: 9822831Abstract: 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: GrantFiled: March 14, 2016Date of Patent: November 21, 2017Assignee: HYUNDAI MOTOR COMPANYInventors: Sung Hyun Cho, Seung Sam Baek, Ho Young Lee
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Patent number: 9821797Abstract: 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: GrantFiled: March 7, 2016Date of Patent: November 21, 2017Assignee: HYUNDAI MOTOR COMPANYInventors: Young Min Yoon, Jin Sung Kim, Seung Sam Baek, Seong Hwan Cheong
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Patent number: 9738275Abstract: 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: GrantFiled: April 6, 2016Date of Patent: August 22, 2017Assignee: HYUNDAI MOTOR COMPANYInventors: Sung Hyun Cho, Ho Young Lee, So Young Lee, Seung Sam Baek, Ho Sung Kim, Seong Hwan Cheong, Young Min Yoon
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Publication number: 20170158190Abstract: 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: ApplicationFiled: April 6, 2016Publication date: June 8, 2017Applicant: Hyundai Motor CompanyInventors: Sung Hyun CHO, Ho Young LEE, So Young LEE, Seung Sam BAEK, Ho Sung KIM, Seong Hwan CHEONG, Young Min YOON
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Publication number: 20170138421Abstract: 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: ApplicationFiled: March 14, 2016Publication date: May 18, 2017Inventors: Sung Hyun CHO, Seung Sam BAEK, Ho Young LEE
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Publication number: 20170101084Abstract: 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: ApplicationFiled: March 7, 2016Publication date: April 13, 2017Applicant: Hyundai Motor CompanyInventors: Young Min YOON, Jin Sung KIM, Seung Sam BAEK, Seong Hwan CHEONG
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Publication number: 20160153552Abstract: 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: ApplicationFiled: May 20, 2015Publication date: June 2, 2016Applicants: Hyundai Motor Company, Kia Motors Corp.Inventors: Young Min YOON, Seung Sam Baek
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Publication number: 20160138709Abstract: 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: ApplicationFiled: May 20, 2015Publication date: May 19, 2016Applicants: Hyundai Motor Company, Kia Motors Corp.Inventors: Young Min YOON, Seung Sam BAEK
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Patent number: 9285284Abstract: 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: GrantFiled: August 15, 2014Date of Patent: March 15, 2016Assignees: Hyundai Motor Company, Kia Motors Corp.Inventors: Jin Sung Kim, Seung Sam Baek
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Patent number: 9145933Abstract: 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: GrantFiled: September 29, 2014Date of Patent: September 29, 2015Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORP.Inventors: Ho Young Lee, Seung Sam Baek, Young Min Yoon
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Publication number: 20150167757Abstract: 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: ApplicationFiled: August 26, 2014Publication date: June 18, 2015Applicants: Hyundai Motor Company, Kia Motors Corp.Inventors: Ho Young LEE, Seung Sam BAEK
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Publication number: 20150167759Abstract: 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: ApplicationFiled: September 29, 2014Publication date: June 18, 2015Applicants: Hyundai Motor Company, Kia Motors Corp.Inventors: Ho Young LEE, Seung Sam BAEK, Young Min YOON
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Publication number: 20150149029Abstract: 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: ApplicationFiled: August 15, 2014Publication date: May 28, 2015Applicants: Hyundai Motor Company, Kia Motors Corp.Inventors: Jin Sung KIM, Seung Sam BAEK
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Publication number: 20150120217Abstract: 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: ApplicationFiled: June 3, 2014Publication date: April 30, 2015Applicants: Hyundai Motor Company, Kia Motors Corp.Inventors: Ho Young Lee, So Young Lee, Young Min Yoon, Jin Sung Kim, Seung Sam Baek
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Patent number: 9002605Abstract: 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: GrantFiled: December 18, 2012Date of Patent: April 7, 2015Assignees: Hyundai Motor Company, Kia Motors Corp.Inventors: Young Min Yoon, Sung Hyun Cho, Joung Chul Kim, Seung Sam Baek
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Patent number: 8972134Abstract: 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: GrantFiled: March 13, 2013Date of Patent: March 3, 2015Assignees: Hyundai Motor Company, Kia Motors Corp.Inventors: Young Min Yoon, Sung Hyun Cho, Joung Chul Kim, Seung Sam Baek
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Patent number: 8897980Abstract: 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: GrantFiled: March 11, 2013Date of Patent: November 25, 2014Assignees: Hyundai Motor Company, Kia Motors Corp.Inventors: Young Min Yoon, Seung Sam Baek, Sung Hyun Cho, Ho Young Lee, Joung Chul Kim