Patents by Inventor Wonjoon CHUNG

Wonjoon CHUNG 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).

  • Publication number: 20210324954
    Abstract: A transmission control device of a continuously variable transmission provided in a vehicle includes a continuously variable transmission and a transmission controller. When the pseudo stepped transmission mode is selected, the transmission controller is configured to perform pseudo stepped upshift which repeats a transmission ratio suppression phase in which changes in the transmission ratio of the continuously variable transmission are suppressed, and an upshift phase in which the transmission ratio of the continuously variable transmission is upshifted. When performing the pseudo stepped upshift, the transmission controller is configured to determine an acceleration intention based on an accelerator opening degree and a vehicle speed, and to set upshift time required to pass through the upshift phase so that the larger the acceleration intention, the shorter the upshift time, and so that, for the same accelerator opening degree, the higher the vehicle speed, the shorter the upshift time.
    Type: Application
    Filed: December 11, 2017
    Publication date: October 21, 2021
    Inventors: Jaeseok LIM, Wonjoon CHUNG, Youngkwang KIM, Sungyub HAN