Patents by Inventor Jung-Whun Kang

Jung-Whun Kang 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).

  • Needle lift estimation system of common-rail injector
    Patent number: 6513502
    Abstract: The present invention provides a needle lift estimation system of a common-rail injector on the basis of solenoid voltage and measured current. In addition, the present invention provides a method for estimating a needle lift that comprises: measuring a current that is supplied to a solenoid; estimating an armature lift and an armature speed on the basis of the current of the solenoid; and estimating a needle lift from a state equation having the measured solenoid current, the estimated armature lift, and the estimated armature as state variables.
    Type: Grant
    Filed: May 7, 2002
    Date of Patent: February 4, 2003
    Assignee: Hyundai Motor Company
    Inventors: Myoung-Ho Sunwoo, Jung-Whun Kang