Patents by Inventor Woo Il CHANG

Woo Il CHANG 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: 10731755
    Abstract: A method of controlling driving of a CVT vehicle during cornering performed by a controller, may include determining whether it is necessary to perform an auxiliary control process to enhance a re-acceleration response after entering the corner, by determining a travelling state of the vehicle; setting a target gear ratio instead of a gear ratio obtained based on a shift pattern when the determining produces an affirmative result indicating that it is necessary to perform the auxiliary control process; and performing gear shifting of a CVT to follow the target gear ratio set in the setting of the gear ratio.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: August 4, 2020
    Assignees: Hyundai Motor Company, Kia Motors Corp.
    Inventors: Chan Hee Won, Sung Hwa Jeong, Woo Il Chang, Hyung Hee Lee, Jun Sung Park, Ho Young Kim
  • Patent number: 10352441
    Abstract: A method for controlling a gear ratio of a continuously variable transmission vehicle includes: a step of detecting a position of a shift lever by a controller; a step of checking, by the controller, a gear ratio variation based on a difference between a desired stage gear ratio and a current gear ratio in a continuously variable transmission when the shift lever is detected to be positioned in a manual range; a step of calculating, by the controller, a gear ratio correction value based on a rate of change of engine RPM when the gear ratio variation is checked as being other than zero after the step of checking the gear ratio variation; and a step of correcting, by the controller, the gear ratio variation in response to the calculated gear ratio correction value after the calculation step.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 16, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Chan Hee Won, Hyung Hee Lee, Woo Il Chang, Jun Sung Park, Ho Young Kim
  • Patent number: 10328943
    Abstract: An integrated control method is provided for an engine and a transmission and the method is capable of integrally controlling the engine and the transmission, based on a control correlation between the engine and the transmission. This method determines a target engine operating point reflecting a driving state of a vehicle and a driver's intention to accelerate, in an integrated control map having an engine control area and a transmission control area. The method calculates a target shift ratio based on the target engine operating point, thus being capable of significantly saving a man-hour required to set a map as compared to a conventional control method in which an engine torque map and a shift pattern map are individually set, and improving fuel efficiency.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: June 25, 2019
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Woo Il Chang, Joon Bae Kim, Chan Hee Won
  • Publication number: 20180372218
    Abstract: A method for controlling a gear ratio of a continuously variable transmission vehicle includes: a step of detecting a position of a shift lever by a controller; a step of checking, by the controller, a gear ratio variation based on a difference between a desired stage gear ratio and a current gear ratio in a continuously variable transmission when the shift lever is detected to be positioned in a manual range; a step of calculating, by the controller, a gear ratio correction value based on a rate of change of engine RPM when the gear ratio variation is checked as being other than zero after the step of checking the gear ratio variation; and a step of correcting, by the controller, the gear ratio variation in response to the calculated gear ratio correction value after the calculation step.
    Type: Application
    Filed: November 16, 2017
    Publication date: December 27, 2018
    Applicants: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Chan Hee WON, Hyung Hee LEE, Woo Il CHANG, Jun Sung PARK, Ho Young KIM
  • Publication number: 20180273038
    Abstract: Disclosed is an integrated control method for an engine and a transmission, which is capable of integrally controlling the engine and the transmission, based on a control correlation between the engine and the transmission. This method determines a target engine operating point reflecting a driving state of a vehicle and a driver's intention to accelerate, in an integrated control map having an engine control area and a transmission control area. The method calculates a target shift ratio based on the target engine operating point, thus being capable of significantly saving a man-hour required to set a map as compared to a conventional control method in which an engine torque map and a shift pattern map are individually set, and improving fuel efficiency.
    Type: Application
    Filed: October 27, 2017
    Publication date: September 27, 2018
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Woo Il CHANG, Joon Bae KIM, Chan Hee WON