Patents by Inventor Dokyung Yim

Dokyung Yim 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: 10247302
    Abstract: A control apparatus of an automatic transmission includes an electric hydraulic pump including a motor and a pump, an actuator for engaging or releasing a friction element by controlling a hydraulic pressure discharged from the pump, and a transmission control unit (TCU) for correcting a control signal to control the actuator depending on a dynamic characteristic coefficient of the friction element and the actuator during shifting when outputting the control signal to the actuator.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: April 2, 2019
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Taehwan Wi, Chang Wook Lee, Dokyung Yim, Chong Tae Yang
  • Publication number: 20170167600
    Abstract: A control apparatus of an automatic transmission includes an electric hydraulic pump including a motor and a pump, an actuator for engaging or releasing a friction element by controlling a hydraulic pressure discharged from the pump, and a transmission control unit (TCU) for correcting a control signal to control the actuator depending on a dynamic characteristic coefficient of the friction element and the actuator during shifting when outputting the control signal to the actuator.
    Type: Application
    Filed: August 23, 2016
    Publication date: June 15, 2017
    Inventors: Taehwan WI, Chang Wook LEE, Dokyung YIM, Chong Tae YANG
  • Patent number: 8147374
    Abstract: A method of controlling a hybrid vehicle including an automatic transmission and a motor generator comprises a pre-gearshift control, a mid-gearshift control, and a post-gearshift control. It is possible to prevent abnormal operations and damage of an automatic transmission due to reverse rotation of the input shaft of the automatic transmission and achieve smooth and stable pre-stop gearshift, by appropriately controlling reverse torque exerted in the input shaft of the automatic transmission, when a vehicle equipped with a hybrid driving apparatus including the automatic transmission performs the pre-stop gearshift.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: April 3, 2012
    Assignees: Kia Motors Corporation, Hyundai Motor Company
    Inventors: Dokyung Yim, Joungchul Kim
  • Publication number: 20100137097
    Abstract: A method of controlling a hybrid vehicle including an automatic transmission and a motor generator comprises a pre-gearshift control, a mid-gearshift control, and a post-gearshift control. It is possible to prevent abnormal operations and damage of an automatic transmission due to reverse rotation of the input shaft of the automatic transmission and achieve smooth and stable pre-stop gearshift, by appropriately controlling reverse torque exerted in the input shaft of the automatic transmission, when a vehicle equipped with a hybrid driving apparatus including the automatic transmission performs the pre-stop gearshift.
    Type: Application
    Filed: November 18, 2009
    Publication date: June 3, 2010
    Applicants: KIA MOTORS CORPORATION, HYUNDAI MOTOR COMPANY
    Inventors: Dokyung Yim, Joungchul Kim
  • Publication number: 20090280958
    Abstract: A shift control system for an automatic transmission may include: a shift speed detector for detecting a current shift speed; a kick-down switch for detecting demand for a kick-down shift; and a control portion completing a shift to a target shift speed according to a predetermined shift pattern before a shift finish point by modifying control duties of off-going and on-coming elements if a shift pattern of a lower shift speed, a gear ratio of which is higher than that of the target shift speed, is passed during the kick-down shift, and then performing a shift to the lower shift speed.
    Type: Application
    Filed: November 20, 2008
    Publication date: November 12, 2009
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Dokyung Yim, Joung Chul Kim