Patents by Inventor Dong Uk Oh

Dong Uk Oh 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: 11873777
    Abstract: A start-up method of a mild hybrid system determines whether start-up is attempted through an MHSG in accordance with a request for start-up from a driver, compares an engine rpm at the end of cranking with a reference rpm in start-up using the MHSG, determines whether an engine rpm immediately after start-up follows an idle target rpm when the engine rpm at the end of cranking exceeds the reference rpm, checks whether there is an error in a cam angle sensor when poor following in which the engine rpm immediately after start-up does not follow the idle target rpm is generated, forcibly changes an engine state into cranking when the cam angle sensor has an error, and executes an existing backup crank logic that decreases a target rpm of the MHSG and finds out a fuel injection time while performing test injection using a signal from an crank angle sensor.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: January 16, 2024
    Assignee: Hyundai Kefico Corporation
    Inventor: Dong Uk Oh
  • Publication number: 20220307440
    Abstract: A start-up method of a mild hybrid system determines whether start-up is attempted through an MHSG in accordance with a request for start-up from a driver, compares an engine rpm at the end of cranking with a reference rpm in start-up using the MHSG, determines whether an engine rpm immediately after start-up follows an idle target rpm when the engine rpm at the end of cranking exceeds the reference rpm, checks whether there is an error in a cam angle sensor when poor following in which the engine rpm immediately after start-up does not follow the idle target rpm is generated, forcibly changes an engine state into cranking when the cam angle sensor has an error, and executes an existing backup crank logic that decreases a target rpm of the MHSG and finds out a fuel injection time while performing test injection using a signal from an crank angle sensor.
    Type: Application
    Filed: March 28, 2022
    Publication date: September 29, 2022
    Inventor: Dong Uk Oh
  • Patent number: D1001841
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: October 17, 2023
    Inventors: Sang Il Ahn, Dong Uk Oh, Moon Hwan Lee, Jeong Eun Lee, Yu Jin Chung
  • Patent number: D1012969
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: January 30, 2024
    Inventors: Sang Il Ahn, Dong Uk Oh, Moon Hwan Lee, Jeong Eun Lee, Yu Jin Chung