Patents by Inventor Sung Chan NA
Sung Chan NA 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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Publication number: 20240001909Abstract: Provided are a hybrid electric vehicle and driving mode control method and apparatus for the same. An engine start request is generated by a heating controller of the vehicle. A second time is determined on basis of a first time between the cancellation of a prevent engine start request and the generation of the engine start request. The engine is controlled so that the engine is further maintained in a started state during the second time after the engine start request is cancelled.Type: ApplicationFiled: October 31, 2022Publication date: January 4, 2024Applicants: Hyundai Motor Company, Kia CorporationInventors: Jin Kyeom CHO, Sung Deok KIM, Ku Young KANG, Seong Wook MOON, Sung Chan NA
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Publication number: 20230119802Abstract: A hybrid vehicle (HEV) provides an improved sensation of acceleration. An example method for controlling an engine of an HEV which includes a first motor directly connected to an engine and a second motor located at an input side of a transmission, may include determining a requested torque, determining a compensation torque for compensating an acceleration loss in a shift process based on the requested torque, a torque of the second motor, a torque of the engine and information on the shift, determining an available torque of the first motor, and determining a final torque of the first motor based on the compensation torque and the available torque.Type: ApplicationFiled: September 16, 2022Publication date: April 20, 2023Inventors: Seong Ik Park, Sung Chan Na
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Publication number: 20220203956Abstract: A method of controlling driving of a hybrid electric vehicle having an engine connected to main drive wheels via a transmission and a motor connected to auxiliary drive wheels includes setting a drive mode, controlling an input torque of the transmission in response to an extent of depression of an accelerator pedal (APS) according to the drive mode, performing distribution of drive power to the main drive wheels and the auxiliary drive wheels and variable shift-pattern control based on a result of a comparison between an amount of slip of the main drive wheels and the amount of slip of the auxiliary drive wheels, and determining whether to perform variable shift-time control in consideration of a type of the variable shift-pattern control or a number of revolutions per minute (RPM) of the engine at beginning of a shift.Type: ApplicationFiled: December 14, 2021Publication date: June 30, 2022Inventors: Sung Chan Na, Seong Ik Park
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Publication number: 20220111833Abstract: A method of controlling a hybrid electric vehicle including an engine and a first motor connected to main drive wheels and a second motor connected to auxiliary drive wheels includes determining a required torque, in response to a predetermined condition being satisfied, determining a first torque that the second motor is to continuously output based on the required torque and a vehicle speed and determining a second torque that the second motor is to discontinuously output in order to compensate for acceleration loss in a situation in which the acceleration loss occurs based on a state of an engine clutch disposed between the engine and the first motor, a state of a transmission, or the required torque, and determining a final torque of the second motor based on the first and second torques.Type: ApplicationFiled: October 12, 2021Publication date: April 14, 2022Inventors: Seong Ik Park, Sung Chan Na, Ku Young Kang, Yong Hoon Lee
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Patent number: 11046316Abstract: A regenerative braking control method of a hybrid vehicle may include: a vehicle condition determination operation of determining, by a controller, whether a vehicle speed and a driving mode satisfy conditions suitable for regenerative braking control of the hybrid vehicle; an accumulated count increasing operation of increasing, by the controller, an accumulated count of a reduction direction signal when the reduction direction signal is input from a two-way input device while the conditions are satisfied; an accumulated count reducing operation of reducing, by the controller, the accumulated count of the reduction direction signal depending on a count of the increase direction signal when the increase direction signal is input from the two-way input device while the conditions are satisfied; and a phased braking operation of increasing, by the controller, regenerative braking torque of a motor in phases depending on the accumulated count of the reduction direction signal.Type: GrantFiled: April 26, 2019Date of Patent: June 29, 2021Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Sung Chan Na, Seong Hwan Cheong
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Patent number: 10752236Abstract: An apparatus and method for controlling gear shift of a hybrid vehicle prevent frequent gear shift by adjusting output of a driving motor or a gear shift time point of a transmission based on road condition or vehicle state while the hybrid vehicle is driven in a specific road condition or a specific vehicle state in a HEV mode. The apparatus includes a driving state detector that detects a road condition and a vehicle state and a controller that receives the road condition and the vehicle state from the driving state detector to differentiate and select a hybrid electric vehicle (HEV) mode into a normal mode and a compensation mode. The controller adjusts the output of a driving motor or a gear shift time point of a transmission according to different conditions from the driving state detector in the compensation mode.Type: GrantFiled: December 5, 2017Date of Patent: August 25, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Seung Han Lee, Jun Geol Song, Sung Chan Na, Yong Kak Choi, Teh Hwan Cho
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Publication number: 20200180631Abstract: A regenerative braking control method of a hybrid vehicle may include: a vehicle condition determination operation of determining, by a controller, whether a vehicle speed and a driving mode satisfy conditions suitable for regenerative braking control of the hybrid vehicle; an accumulated count increasing operation of increasing, by the controller, an accumulated count of a reduction direction signal when the reduction direction signal is input from a two-way input device while the conditions are satisfied; an accumulated count reducing operation of reducing, by the controller, the accumulated count of the reduction direction signal depending on a count of the increase direction signal when the increase direction signal is input from the two-way input device while the conditions are satisfied; and a phased braking operation of increasing, by the controller, regenerative braking torque of a motor in phases depending on the accumulated count of the reduction direction signal.Type: ApplicationFiled: April 26, 2019Publication date: June 11, 2020Inventors: Sung Chan NA, Seong Hwan CHEONG
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Publication number: 20180186363Abstract: An apparatus and method for controlling gear shift of a hybrid vehicle are provided. The apparatus and method prevent frequent gear shift by adjusting output of a driving motor or a gear shift time point of a transmission according to road condition or vehicle state while the hybrid vehicle is driven in a specific road condition or a specific vehicle state in a HEV mode. The apparatus includes a driving state detector that detects a road condition and a vehicle state and a controller that receives the road condition and the vehicle state from the driving state detector to differentiate and select a hybrid electric vehicle (HEV) mode into a normal mode and a compensation mode. The controller adjusts the output of a driving motor or a gear shift time point of a transmission according to different conditions from the driving state detector in the compensation mode.Type: ApplicationFiled: December 5, 2017Publication date: July 5, 2018Inventors: Seung Han Lee, Jun Geol Song, Sung Chan Na, Yong Kak Choi, Teh Hwan Cho
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Patent number: 9796374Abstract: An overheat prevention method includes an rpm comparison step of comparing an engine revolution per minute (rpm) speed with a preset rpm speed by a controller when requiring an engagement of an engine clutch, a temperature comparison step of comparing a temperature of a transmission clutch with a preset temperature by the controller when it is determined that the engine rpm speed is less than the preset rpm speed at the rpm comparison step, and a serial drive mode control step of releasing the engine clutch and engaging the transmission clutch, and controlling a hybrid starter generator (HSG) to charge a battery using engine power to provide driving power to a motor by the controller when it is determined that the temperature of the transmission clutch is higher than the preset temperature at the temperature comparison step.Type: GrantFiled: June 29, 2016Date of Patent: October 24, 2017Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Chang Min Lee, Sung Chan Na, Kwon Chae Chung, Jun Geol Song
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Publication number: 20170259804Abstract: An overheat prevention method includes an rpm comparison step of comparing an engine revolution per minute (rpm) speed with a preset rpm speed by a controller when requiring an engagement of an engine clutch, a temperature comparison step of comparing a temperature of a transmission clutch with a preset temperature by the controller when it is determined that the engine rpm speed is less than the preset rpm speed at the rpm comparison step, and a serial drive mode control step of releasing the engine clutch and engaging the transmission clutch, and controlling a hybrid starter generator (HSG) to charge a battery using engine power to provide driving power to a motor by the controller when it is determined that the temperature of the transmission clutch is higher than the preset temperature at the temperature comparison step.Type: ApplicationFiled: June 29, 2016Publication date: September 14, 2017Inventors: Chang Min LEE, Sung Chan NA, Kwon Chae CHUNG, Jun Geol SONG