Patents by Inventor Kiyoka TSUNEKAWA

Kiyoka TSUNEKAWA 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).

  • Device and method of determining deterioration of catalyst
    Patent number: 8739615
    Abstract: A catalyst determining device includes an oxidation catalyst disposed in an outlet passage in an engine, the oxidation catalyst including an adsorption substance for adsorbing and desorbing an exhaust component in exhaust and a catalytic substance capable of oxidizing the exhaust component, a calculating unit for calculating a difference in oxygen concentration between upstream and downstream of the oxidation catalyst, and a determination unit for determining the deterioration of the oxidation catalyst through comparison of a plurality of the differences in oxygen concentration obtained at different temperatures of the oxidation catalyst by the calculating unit.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: June 3, 2014
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventor: Kiyoka Tsunekawa
  • DEVICE AND METHOD OF DETERMINING DETERIORATION OF CATALYST
    Publication number: 20130228008
    Abstract: A catalyst determining device includes an oxidation catalyst disposed in an outlet passage in an engine, the oxidation catalyst including an adsorption substance for adsorbing and desorbing an exhaust component in exhaust and a catalytic substance capable of oxidizing the exhaust component, a calculating unit for calculating a difference in oxygen concentration between upstream and downstream of the oxidation catalyst, and a determination unit for determining the deterioration of the oxidation catalyst through comparison of a plurality of the differences in oxygen concentration obtained at different temperatures of the oxidation catalyst by the calculating unit.
    Type: Application
    Filed: January 17, 2013
    Publication date: September 5, 2013
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventor: Kiyoka TSUNEKAWA