Patents by Inventor Kouzo Katougi

Kouzo Katougi 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).

  • Control device for engine
    Patent number: 8463532
    Abstract: Provided is a control device for an engine which is capable of purifying NOx with high efficiency at a restart after an idle stop without deteriorating purification efficiency of HC and CO. At the restart after the idle stop, an air-fuel ratio is controlled to be rich, and an atmosphere inside of a catalyst is estimated on the basis of a required time ?T from a time point at which an output value (VO2—2) of first oxygen concentration detection means upstream of the catalyst exceeds a predetermined value A1 to a time point at which an output value (VO2—2) of second oxygen concentration detection means downstream of the catalyst exceeds a predetermined value A2, whereby an air-fuel ratio at next and subsequent restarts is corrected so that the atmosphere inside of the catalyst is optimized at the next and subsequent restarts.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: June 11, 2013
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji Nakagawa, Kazuhiko Kanetoshi, Kouzo Katougi, Takanobu Ichihara, Minoru Ohsuga, Hiroyuki Takamura
  • Control Device for Engine
    Publication number: 20110315108
    Abstract: Provided is a control device for an engine which is capable of purifying NOx with high efficiency at a restart after an idle stop without deteriorating purification efficiency of HC and CO. At the restart after the idle stop, an air-fuel ratio is controlled to be rich, and an atmosphere inside of a catalyst is estimated on the basis of a required time ?T from a time point at which an output value (VO2—2) of first oxygen concentration detection means upstream of the catalyst exceeds a predetermined value A1 to a time point at which an output value (VO2—2) of second oxygen concentration detection means downstream of the catalyst exceeds a predetermined value A2, whereby an air-fuel ratio at next and subsequent restarts is corrected so that the atmosphere inside of the catalyst is optimized at the next and subsequent restarts.
    Type: Application
    Filed: February 4, 2010
    Publication date: December 29, 2011
    Applicant: Hitachi Automotive Systems, Ltd.
    Inventors: Shinji Nakagawa, Kazuhiko Kanetoshi, Kouzo Katougi, Takanobu Ichihara, Minoru Ohsuga, Hiroyuki Takamura