Patents by Inventor Hideaki Yokohata

Hideaki Yokohata 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).

  • Patent number: 11168628
    Abstract: Disclosed is a control device of an engine 1 including an injector. The injector has a needle which is displaced between a close position where no fuel is allowed to flow into a sac portion and an open position where the fuel is allowed to flow into the sac portion. The control device has a fuel injection controller controlling a fuel injection period and an injector controller controlling a motion of the needle. The injector controller executes control to reduce a moving speed of the needle before the needle reaches the closed position when the injection period ends.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: November 9, 2021
    Assignee: Mazda Motor Corporation
    Inventors: Yoshitaka Wada, Hideaki Yokohata, Yoshiharu Ueki, Kentaro Nomura
  • Publication number: 20200011256
    Abstract: Disclosed is a control device of an engine 1 including an injector. The injector has a needle which is displaced between a close position where no fuel is allowed to flow into a sac portion and an open position where the fuel is allowed to flow into the sac portion. The control device has a fuel injection controller controlling a fuel injection period and an injector controller controlling a motion of the needle. The injector controller executes control to reduce a moving speed of the needle before the needle reaches the closed position when the injection period ends.
    Type: Application
    Filed: January 29, 2018
    Publication date: January 9, 2020
    Inventors: Yoshitaka Wada, Hideaki Yokohata, Yoshiharu Ueki, Kentaro Nomura
  • Publication number: 20070106453
    Abstract: Disclosed is an internal-combustion engine design support system for presenting a combination of functional specification types or the like of a design-target engine in connection with a target performance parameter value set out in a new vehicle.
    Type: Application
    Filed: November 3, 2006
    Publication date: May 10, 2007
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hideaki Yokohata, Yasutomo Kusunoki
  • Patent number: 7017399
    Abstract: In a computer system for analyzing the flow of an intake/exhaust gas of, for example, a four-cycle multi-cylinder engine through application of CFD, the dimension of a space where the flow of the intake/exhaust gas is analyzed can be selected with respect to each of four processes, that is, intake, compression, expansion and exhaust processes, of each cylinder (in selecting step S1), and a physical model for simulating the flow of the intake/exhaust gas from a part of an intake system to a part of an exhaust system of the engine in the dimension selected with respect to each of the four processes is set (in model setting steps S2, S31, S41 and S51). The flow of the intake/exhaust gas is subjected to a CFD operation using the physical model, and chemical reactions caused in combustion is simulated (in operating steps S33, S43 and S53), so as to output an output about engine performance on the basis of the results of these simulation operations.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: March 28, 2006
    Assignee: Mazda Motor Corporation
    Inventors: Hideaki Yokohata, Yoshiharu Ueki
  • Publication number: 20040220716
    Abstract: In a computer system for analyzing the flow of an intake/exhaust gas of, for example, a four-cycle multi-cylinder engine through application of CFD, the dimension of a space where the flow of the intake/exhaust gas is analyzed can be selected with respect to each of four processes, that is, intake, compression, expansion and exhaust processes, of each cylinder (in selecting step S1), and a physical model for simulating the flow of the intake/exhaust gas from a part of an intake system to a part of an exhaust system of the engine in the dimension selected with respect to each of the four processes is set (in model setting steps S2, S31, S41 and S51). The flow of the intake/exhaust gas is subjected to a CFD operation using the physical model, and chemical reactions caused in combustion is simulated (in operating steps S33, S43 and S53), so as to output an output about engine performance on the basis of the results of these simulation operations.
    Type: Application
    Filed: February 3, 2004
    Publication date: November 4, 2004
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hideaki Yokohata, Yoshiharu Ueki