Patents by Inventor Dai Tanaka

Dai Tanaka 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).

  • Cylinder injection type internal combustion engine
    Patent number: 6637192
    Abstract: When an increase in a temperature of an exhaust-gas purifying catalyst device in an in-cylinder injection type internal combustion engine is demanded, a temperature-increase control section in an electronic control unit accomplishes stratified combustion by causing each fuel injection valve to inject fuel directly into the associated combustion chamber in a compression stroke in such a way that the air-fuel ratio of the internal combustion engine is in a vicinity of a stoichiometric air-fuel ratio. This allows the temperature of the exhaust-gas purifying catalyst device to be maintained or increased without increasing fuel consumption.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: October 28, 2003
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Shigeo Yamamoto, Kazuyoshi Nakane, Hiroaki Miyamoto, Dai Tanaka, Jun Takemura, Hiromitsu Ando
  • Cylinder injection type internal combustion engine
    Publication number: 20020129600
    Abstract: When an increase in a temperature of an exhaust-gas purifying catalyst device in an in-cylinder injection type internal combustion engine is demanded, a temperature-increase control section in an electronic control unit accomplishes stratified combustion by causing each fuel injection valve to inject fuel directly into the associated combustion chamber in a compression stroke in such a way that the air-fuel ratio of the internal combustion engine is in a vicinity of a stoichiometric air-fuel ratio. This allows the temperature of the exhaust-gas purifying catalyst device to be maintained or increased without increasing fuel consumption.
    Type: Application
    Filed: March 28, 2002
    Publication date: September 19, 2002
    Applicant: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Shigeo Yamamoto, Kazuyoshi Nakane, Hiroaki Miyamoto, Dai Tanaka, Jun Takemura, Hiromitsu Ando
  • In-cylinder injection type internal combustion engine
    Patent number: 6438943
    Abstract: When an increase in a temperature of an exhaust-gas purifying catalyst device in an in-cylinder injection type internal combustion engine is demanded, a temperature-increase control section in an electronic control unit accomplishes stratified combustion by causing each fuel injection valve to inject fuel directly into the associated combustion chamber in a compression stroke in such a way that the air-fuel ratio of the internal combustion engine is in a vicinity of a stoichiometric air-fuel ratio. This allows the temperature of the exhaust-gas purifying catalyst device to be maintained or increased without increasing fuel consumption.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: August 27, 2002
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Shigeo Yamamoto, Kazuyoshi Nakane, Hiroaki Miyamoto, Dai Tanaka, Jun Takemura, Hiromitsu Ando
  • In-cylinder injection type internal combustion engine
    Patent number: 6386173
    Abstract: An electronic control unit (40) for controlling an internal combustion engine drive executes a first operation mode for injecting a fuel in a suction stroke while making an air/fuel ratio feedback control, when a demand for improving output characteristics is made in a medium/high load drive state of the engine. In response to a demand for raising the temperature of a catalyst, moreover, the first operation mode is switched to a second operation mode in which the fuel is injected in a compression stroke while making an air/fuel ratio feedback control performing a predetermined air/fuel ratio in the vicinity of a stoichiometric air/fuel ratio as a target value.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: May 14, 2002
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Shigeo Yamamoto, Kazuyoshi Nakane, Hiroaki Miyamoto, Dai Tanaka, Jun Takemura, Hiromitsu Ando