Patents by Inventor Yoshihumi Hanamura

Yoshihumi Hanamura 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).

  • Internal combustion engine and control method therefor
    Patent number: 9528455
    Abstract: An internal combustion engine includes an Exhaust Gas Recirculation (EGR) system having an EGR valve and a reed valve in an EGR passage, and a control device that expresses a relationship between an opening degree of the EGR valve and a mass flow rate of an EGR gas by using a first volume flow rate of the EGR gas that can be expressed by using an isentropic flow equation of a nozzle of the EGR valve and a second volume flow rate of the EGR gas pumped out by the reed valve. Even if the reed valve (check valve) is provided in the EGR passage, the mass flow rate of the EGR gas can be calculated accurately.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: December 27, 2016
    Assignee: ISUZU MOTORS LIMITED
    Inventors: Yoshihumi Hanamura, Mitsuhiro Aso
  • INTERNAL COMBUSTION ENGINE AND CONTROL METHOD THEREFOR
    Publication number: 20150083095
    Abstract: An internal combustion engine includes an Exhaust Gas Recirculation (EGR) system having an EGR valve and a reed valve in an EGR passage, and a control device that expresses a relationship between an opening degree of the EGR valve and a mass flow rate of an EGR gas by using a first volume flow rate of the EGR gas that can be expressed by using an isentropic flow equation of a nozzle of the EGR valve and a second volume flow rate of the EGR gas pumped out by the reed valve. Even if the reed valve (check valve) is provided in the EGR passage, the mass flow rate of the EGR gas can be calculated accurately.
    Type: Application
    Filed: May 2, 2013
    Publication date: March 26, 2015
    Applicant: ISUZU MOTORS LIMITED
    Inventors: Yoshihumi Hanamura, Mitsuhiro Aso