Patents by Inventor Takashi Kagoshima

Takashi Kagoshima 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).

  • Controller for vehicle including computation of a feedback amount based on a filtered input signal
    Patent number: 9206750
    Abstract: When an idle speed control is implemented, an engine speed is computed based on an output signal of a crank angle sensor at a specified processing angle interval, and a time interval corresponding to the specified processing angle interval is computed. Then, the engine speed is filtered at a specified processing time interval, and a feedback amount (throttle opening correction amount) is computed based on a deviation of an engine speed filtered by a filter portion from a target engine speed. A time constant of a filtering processing is established according to the processing angle interval. Therefore, a filtering processing and a feedback control processing are performed in synchronization with each other, and an instability of an output of the feedback control (feedback amount) can be reduced.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: December 8, 2015
    Assignee: DENSO CORPORATION
    Inventors: Takashi Kagoshima, Tokutada Takahashi
  • CONTROLLER FOR VEHICLE
    Publication number: 20130131889
    Abstract: When an idle speed control is implemented, an engine speed is computed based on an output signal of a crank angle sensor at a specified processing angle interval, and a time interval corresponding to the specified processing angle interval is computed. Then, the engine speed is filtered at a specified processing time interval, and a feedback amount (throttle opening correction amount) is computed based on a deviation of an engine speed filtered by a filter portion from a target engine speed. A time constant of a filtering processing is established according to the processing angle interval. Therefore, a filtering processing and a feedback control processing are performed in synchronization with each other, and an instability of an output of the feedback control (feedback amount) can be reduced.
    Type: Application
    Filed: September 6, 2012
    Publication date: May 23, 2013
    Applicant: DENSO CORPORATION
    Inventors: Takashi KAGOSHIMA, Tokutada TAKAHASHI
  • Fluid heater with spiral hot gas flow
    Patent number: 4357909
    Abstract: A fluid heater embodies an upright shell with discs vertically arrayed in the shell interior. The discs are angled and configured induce spiral upward flow of hot gases, in external contact with the discs which themselves contain or pass fluid to be heated.
    Type: Grant
    Filed: February 13, 1981
    Date of Patent: November 9, 1982
    Inventor: Takashi Kagoshima