Patents by Inventor Daekyun Kim

Daekyun Kim 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).

  • Method for adapting shift schedule of an automatic transmission based on GPS/map information
    Patent number: 8099220
    Abstract: A powertrain control includes monitoring map preview information, determining a road gradient factor based upon the map preview information, and adapting a transmission shift schedule based upon the road gradient factor.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: January 17, 2012
    Assignee: GM Global Technology Operations LLC
    Inventors: Daekyun Kim, Kumaraswamy V. Hebbale, Chunhao J. Lee
  • Driver intention detection algorithm for transmission control
    Patent number: 7976430
    Abstract: A system and method for providing TCC control and/or transmission gear shift control by considering the rate of change of the accelerator pedal or throttle position. The method determines whether the rate of change of the throttle position exceeds a predetermined positive rate of change or a predetermined negative rate of change and, if so, releases the TCC to provide TCC control. Alternatively, or additionally, the method can provide a transmission gear down-shift or up-shift depending on which direction the throttle position is changing. Once the TCC and/or gear shift control has been initiated, the method can start a timer and then return to normal TCC and/or gear shift control after the timer has expired. The TCC and/or gear shift control can also return to normal if the rate of change of the throttle position indicates that the throttle is being returned to its previous position.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: July 12, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Chunhao J. Lee, Kumaraswamy V. Hebbale, Paul G. Otanez, Daekyun Kim
  • METHOD FOR ADAPTING SHIFT SCHEDULE OF AN AUTOMATIC TRANSMISSION BASED ON GPS/MAP INFORMATION
    Publication number: 20100030437
    Abstract: A powertrain control includes monitoring map preview information, determining a road gradient factor based upon the map preview information, and adapting a transmission shift schedule based upon the road gradient factor.
    Type: Application
    Filed: July 29, 2008
    Publication date: February 4, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Daekyun Kim, Kumaraswamy V. Hebbale, Chunhao J. Lee
  • Driver Intention Detection Algorithm for Transmission Control
    Publication number: 20090192015
    Abstract: A system and method for providing TCC control and/or transmission gear shift control by considering the rate of change of the accelerator pedal or throttle position. The method determines whether the rate of change of the throttle position exceeds a predetermined positive rate of change or a predetermined negative rate of change and, if so, releases the TCC to provide TCC control. Alternatively, or additionally, the method can provide a transmission gear down-shift or up-shift depending on which direction the throttle position is changing. Once the TCC and/or gear shift control has been initiated, the method can start a timer and then return to normal TCC and/or gear shift control after the timer has expired. The TCC and/or gear shift control can also return to normal if the rate of change of the throttle position indicates that the throttle is being returned to its previous position.
    Type: Application
    Filed: January 30, 2008
    Publication date: July 30, 2009
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Chunhao J. Lee, Kumaraswamy V. Hebbale, Paul G. Otanez, Daekyun Kim