Patents by Inventor Sotaro Yoshii

Sotaro Yoshii 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).

  • Intake and exhaust system
    Patent number: 11692499
    Abstract: An intake and exhaust system includes an engine, an intake air channel, an exhaust gas channel, an EGR channel, an EGR valve, and a control device. By adjusting an opening degree of the EGR valve, the control device executes EGR control processing to control a flowrate of a recirculating exhaust gas. An isolation valve is disposed in the EGR channel closer to the exhaust gas channel than the EGR valve is. An air admittance valve is disposed in the EGR channel closer to the exhaust gas channel than the EGR valve is and closer to the intake air channel than the isolation valve is. The control device executes learning processing to learn a relationship between an actual flowrate and a reference flowrate while the isolation valve is closed and the air admittance valve is opened. The control device executes the EGR control processing based on a learning processing result.
    Type: Grant
    Filed: September 22, 2022
    Date of Patent: July 4, 2023
    Assignee: SUBARU CORPORATION
    Inventors: Tomonori Kashiwadate, Susumu Shimura, Seita Nakano, Sotaro Yoshii, Kenta Hoshi
  • INTAKE AND EXHAUST SYSTEM
    Publication number: 20230103749
    Abstract: An intake and exhaust system includes an engine, an intake air channel, an exhaust gas channel, an EGR channel, an EGR valve, and a control device. By adjusting an opening degree of the EGR valve, the control device executes EGR control processing to control a flowrate of a recirculating exhaust gas. An isolation valve is disposed in the EGR channel closer to the exhaust gas channel than the EGR valve is. An air admittance valve is disposed in the EGR channel closer to the exhaust gas channel than the EGR valve is and closer to the intake air channel than the isolation valve is. The control device executes learning processing to learn a relationship between an actual flowrate and a reference flowrate while the isolation valve is closed and the air admittance valve is opened. The control device executes the EGR control processing based on a learning processing result.
    Type: Application
    Filed: September 22, 2022
    Publication date: April 6, 2023
    Inventors: Tomonori KASHIWADATE, Surumu Shimura, Seita Nakano, Sotaro Yoshii, Kenta Hoshi