Patents by Inventor Ryuta Matsui

Ryuta Matsui 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).

  • Control system and method for internal combustion engine
    Patent number: 7331171
    Abstract: A control system for an internal combustion engine that executes post injection, which is capable of accurately estimating the state of dilution of engine oil, thereby properly controlling the amount of oil dilution such that it does not become too large. In an internal combustion engine having an injector that injects fuel into a combustion chamber, post injection is executed in which fuel is injected from the injector during the expansion stroke or the exhaust stroke of the engine, based on a detected operating condition of the engine. The amount of dilution of engine oil diluted with fuel injected by post injection is calculated. The amount of fuel evaporated from the engine oil is calculated. A state of dilution of the engine oil is estimated based on the calculated engine dilution amount and the calculated fuel evaporation amount.
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: February 19, 2008
    Assignee: Honda Motor Co., Ltd.
    Inventors: Isao Chiba, Ryuji Matsukado, Ryuta Matsui, Yoshinori Ishihara, Isao Kaneko
  • Control system and method for internal combustion engine
    Publication number: 20060283421
    Abstract: A control system for an internal combustion engine that executes post injection, which is capable of accurately estimating the state of dilution of engine oil, thereby properly controlling the amount of oil dilution such that it does not become too large. In an internal combustion engine having an injector that injects fuel into a combustion chamber, post injection is executed in which fuel is injected from the injector during the expansion stroke or the exhaust stroke of the engine, based on a detected operating condition of the engine. The amount of dilution of engine oil diluted with fuel injected by post injection is calculated. The amount of fuel evaporated from the engine oil is calculated. A state of dilution of the engine oil is estimated based on the calculated engine dilution amount and the calculated fuel evaporation amount.
    Type: Application
    Filed: June 20, 2006
    Publication date: December 21, 2006
    Inventors: Isao Chiba, Ryuji Matsukado, Ryuta Matsui, Yoshinori Ishihara, Isao Kaneko