Patents by Inventor Eui Joon SHIM

Eui Joon SHIM 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 apparatus for controlling EGR
    Patent number: 9790877
    Abstract: A method of controlling exhaust gas recirculation (EGR) for controlling recirculation of exhaust gas discharged from a combustion chamber of an engine includes: a data obtaining operation of obtaining data about an engine state and a gas supply state; a current EGR rate calculating operation of calculating a current EGR rate of supply gas based on the data; a demand EGR rate setting operation of setting a demand EGR rate matched with the data in a pre-made target EGR rate map; an error calculating operation of calculating a difference between the demand EGR rate and the current EGR rate; and a control operation of making the current EGR rate follow the demand EGR rate by changing a recirculation rate of the exhaust gas by adjusting an inhalation side pressure of the supply gas according to the difference.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: October 17, 2017
    Assignee: Doosan Infracore Co., Ltd.
    Inventors: Eui Joon Shim, Young Deok Han, Seung Hyup Shin
  • METHOD AND APPARATUS FOR CONTROLLING EGR
    Publication number: 20150345415
    Abstract: A method of controlling exhaust gas recirculation (EGR) for controlling recirculation of exhaust gas discharged from a combustion chamber of an engine includes: a data obtaining operation of obtaining data about an engine state and a gas supply state; a current EGR rate calculating operation of calculating a current EGR rate of supply gas based on the data; a demand EGR rate setting operation of setting a demand EGR rate matched with the data in a pre-made target EGR rate map; an error calculating operation of calculating a difference between the demand EGR rate and the current EGR rate; and a control operation of making the current EGR rate follow the demand EGR rate by changing a recirculation rate of the exhaust gas by adjusting an inhalation side pressure of the supply gas according to the difference.
    Type: Application
    Filed: December 13, 2013
    Publication date: December 3, 2015
    Inventors: Eui Joon SHIM, Young Deok HAN, Seung Hyup SHIN