Patents by Inventor Kyun Ill Lee

Kyun Ill Lee 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 AND SYSTEM FOR MAINTAINING STABILITY OF SYSTEM OF FUEL CELL VEHICLE
    Publication number: 20160335815
    Abstract: A method and system for maintaining stability of a system of a fuel cell vehicle are provided to prevent malfunction of sensors of a low voltage DC-DC converter and the respective controllers. A start timing of a fault diagnosis for the low voltage DC-DC converter and the respective controllers is determined and a deviation between voltages of the sensors of the low voltage DC-DC converter and the respective controllers is detected to determine whether the low voltage DC-DC converter and the respective controllers fail.
    Type: Application
    Filed: December 3, 2015
    Publication date: November 17, 2016
    Inventors: Seong Pil Ryu, Sung Suk Ok, Ji Tae Kim, Kyun Ill Lee