Patents by Inventor Kei Hiramatsu

Kei Hiramatsu 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).

  • Engine drive system
    Patent number: 10895210
    Abstract: Disclosed is an engine drive system that uses an open-type regulator as a regulator that rectifies an output and adjusts a voltage of a magneto AC generator driven by an engine. A means is provided that performs a process of increasing an opening degree of an ISC valve for a limited amount of time when a load of the generator is applied, while the engine is idling. Temporarily increasing an output torque of the engine prevents a rotational speed of the engine from dramatically decreasing, or the engine from stalling, during idling.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: January 19, 2021
    Assignee: MAHLE ELECTRIC DRIVES JAPAN CORPORATION
    Inventor: Kei Hiramatsu
  • ENGINE DRIVE SYSTEM
    Publication number: 20210010435
    Abstract: Disclosed is an engine drive system that uses an open-type regulator as a regulator that rectifies an output and adjusts a voltage of a magneto AC generator driven by an engine. A means is provided that performs a process of increasing an opening degree of an ISC valve for a limited amount of time when a load of the generator is applied, while the engine is idling. Temporarily increasing an output torque of the engine prevents a rotational speed of the engine from dramatically decreasing, or the engine from stalling, during idling.
    Type: Application
    Filed: December 14, 2016
    Publication date: January 14, 2021
    Inventor: KEI HIRAMATSU
  • Control device for internal combustion engine
    Patent number: 9328712
    Abstract: Provided is a control device for an internal combustion engine, employing a microprocessor to control a load other than an ignition device, the control device being provided to an internal combustion engine in which is installed a magnet generator that has a magneto coil for successively generating, in association with revolution of the internal combustion engine, a first half wave voltage, a second half wave voltage of different polarity than the first half wave voltage, and a third half wave voltage of identical polarity to the first half wave voltage; and the magnet generator employing the second half wave voltage to drive the ignition device.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 3, 2016
    Assignee: KOKUSAN DENKI CO., LTD.
    Inventors: Jun Kawagoe, Hidetoshi Suzuki, Kei Hiramatsu
  • CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
    Publication number: 20140318488
    Abstract: Provided is a control device for an internal combustion engine, employing a microprocessor to control a load other than an ignition device, the control device being provided to an internal combustion engine in which is installed a magnet generator that has a magneto coil for successively generating, in association with revolution of the internal combustion engine, a first half wave voltage, a second half wave voltage of different polarity than the first half wave voltage, and a third half wave voltage of identical polarity to the first half wave voltage; and the magnet generator employing the second half wave voltage to drive the ignition device.
    Type: Application
    Filed: September 14, 2012
    Publication date: October 30, 2014
    Applicant: KOKUSAN DENKI CO., LTD.
    Inventors: Jun Kawagoe, Hidetoshi Suzuki, Kei Hiramatsu