Patents by Inventor Sung Oh Ra

Sung Oh Ra 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: 20200182190
    Abstract: A piston combustion chamber structure of an engine includes two or more independent combustion chambers separated from each other and dented on an upper portion of a piston head in axial and circumferential directions. Each of the two or more independent combustion chambers comprises an outer wall and a bottom surface. Independent combustion chambers adjacent to each other among the two or more independent combustion chambers are partitioned by a partition wall. The partition wall has a slant surface such that a squish flowing in the circumferential direction can be generated.
    Type: Application
    Filed: June 6, 2019
    Publication date: June 11, 2020
    Inventors: Sung Oh RA, Kyung Beom KIM, Dong-Hyun CHO, Young Hoon SONG, Joon Kyu LEE, Hyuckmo KWON
  • Patent number: 9932925
    Abstract: A method of improving fuel efficiency and an apparatus for operating a vehicle that performs the method are provided. The apparatus includes a storing unit that stores control plans for a fuel injection system and an intake/exhaust system that optimize responsiveness of an engine for a plurality of driving modes. A catalyst temperature obtaining unit obtains a catalyst temperature and an operation period determining unit determines an operation period of an engine based on rpm of the engine and an amount of fuel consumption. A driving mode determining unit determines any one of the driving modes as a current driving mode based on the catalyst temperature, the operation period, and present time. Additionally, a controller is configured to access a control plan that corresponds to the current driving mode and operate the fuel injection system and the intake/exhaust system based on the control plan corresponding to the current driving mode.
    Type: Grant
    Filed: July 26, 2015
    Date of Patent: April 3, 2018
    Assignee: Hyundai Motor Company
    Inventor: Sung Oh Ra
  • Publication number: 20160160786
    Abstract: A method of improving fuel efficiency and an apparatus for operating a vehicle that performs the method are provided. The apparatus includes a storing unit that stores control plans for a fuel injection system and an intake/exhaust system that optimize responsiveness of an engine for a plurality of driving modes. A catalyst temperature obtaining unit obtains a catalyst temperature and an operation period determining unit determines an operation period of an engine based on rpm of the engine and an amount of fuel consumption. A driving mode determining unit determines any one of the driving modes as a current driving mode based on the catalyst temperature, the operation period, and present time. Additionally, a controller is configured to access a control plan that corresponds to the current driving mode and operate the fuel injection system and the intake/exhaust system based on the control plan corresponding to the current driving mode.
    Type: Application
    Filed: July 26, 2015
    Publication date: June 9, 2016
    Inventor: Sung Oh Ra