Patents by Inventor Takashi HIBIRA

Takashi HIBIRA 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 control system
    Patent number: 9657661
    Abstract: An engine control system is a system configured to selectively switch between first fuel and second fuel and perform an operation control of a single engine, including: a sensor configured to detect an oxygen concentration of an exhaust gas that is exhausted from the engine; and a control device configured to perform an air-fuel ratio feedback control such that an air-fuel ratio becomes a target air-fuel ratio based on an output signal of the sensor, wherein the control device calculates a correction coefficient of an air-fuel ratio feedback control during an operation with the second fuel, and further stores a fuel composition correction coefficient that is a value in a predetermined range and corrects a difference between the calculated correction coefficient and a targeted correction coefficient arising from a change in composition of the second fuel.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: May 23, 2017
    Assignee: KEIHIN CORPORATION
    Inventors: Takashi Hibira, Shinji Yokoyama, Masaya Ootsuka, Makoto Haruta, Noriaki Sumisya
  • ENGINE CONTROL SYSTEM
    Publication number: 20150308361
    Abstract: An engine control system is a system configured to selectively switch between first fuel and second fuel and perform an operation control of a single engine, including: a sensor configured to detect an oxygen concentration of an exhaust gas that is exhausted from the engine; and a control device configured to perform an air-fuel ratio feedback control such that an air-fuel ratio becomes a target air-fuel ratio based on an output signal of the sensor, wherein the control device calculates a correction coefficient of an air-fuel ratio feedback control during an operation with the second fuel, and further stores a fuel composition correction coefficient that is a value in a predetermined range and corrects a difference between the calculated correction coefficient and a targeted correction coefficient arising from a change in composition of the second fuel.
    Type: Application
    Filed: April 17, 2015
    Publication date: October 29, 2015
    Inventors: Takashi HIBIRA, Shinji YOKOYAMA, Masaya OOTSUKA, Makoto HARUTA, Noriaki SUMISYA