Patents by Inventor Kouhei Toma

Kouhei Toma 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 system
    Patent number: 11629671
    Abstract: An engine system includes a combustion chamber and an air supplier. The combustion chamber is formed in a cylinder. The air supplier is configured to supply air to a circumferential area of the combustion chamber. The circumferential area is near an inner circumferential surface of the cylinder. The air supplier is configured to supply air to the circumferential area before ignition to gather a rich air-fuel mixture that is present in the combustion chamber to a central area of the combustion chamber such that a stratified body consisting of a layer of the air-fuel mixture in the central area and a layer of the air in the circumferential area is formed.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: April 18, 2023
    Assignee: SUBARU CORPORATION
    Inventors: Kouhei Toma, Takeshi Tsuda, Ryo Adachi