Patents by Inventor Shuhei Kawaoka

Shuhei Kawaoka 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).

  • Regeneration control device and regeneration control method of diesel particulate filter
    Patent number: 9046017
    Abstract: A regeneration control device of a diesel particulate filter, includes: a regeneration control unit configured to combust particulate matter accumulated in a diesel particulate filter that removes the particulate matter from exhaust gas of an engine and regenerate the diesel particulate filter when an accumulation amount of the particulate matter accumulated in the diesel particulate filter exceeds a predetermined value, wherein the regeneration control unit is configured to perform lower limit control in which a lower limit of an engine speed is set to a value greater than or equal to a predetermined threshold value during the regeneration.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: June 2, 2015
    Assignee: Komatsu Ltd.
    Inventors: Tatsuro Nakazato, Shuhei Kawaoka
  • REGENERATION CONTROL DEVICE AND REGENERATION CONTROL METHOD OF DIESEL PARTICULATE FILTER
    Publication number: 20140116247
    Abstract: A regeneration control device of a diesel particulate filter, includes: a regeneration control unit configured to combust particulate matter accumulated in a diesel particulate filter that removes the particulate matter from exhaust gas of an engine and regenerate the diesel particulate filter when an accumulation amount of the particulate matter accumulated in the diesel particulate filter exceeds a predetermined value, wherein the regeneration control unit is configured to perform lower limit control in which a lower limit of an engine speed is set to a value greater than or equal to a predetermined threshold value during the regeneration.
    Type: Application
    Filed: April 16, 2012
    Publication date: May 1, 2014
    Applicant: KOMATSU LTD.
    Inventors: Tatsuro Nakazato, Shuhei Kawaoka