Patents by Inventor Tomoyuki Shigefuji

Tomoyuki Shigefuji 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).

  • Combustion control apparatus for direct-injection spark-ignition internal combustion engine
    Patent number: 7958720
    Abstract: A combustion control apparatus is configured for a direct-injection spark-ignition internal combustion engine. The combustion control apparatus selects an extremely retarded combustion mode while the internal combustion engine is in a predetermined operating state. In the extremely retarded combustion mode, the combustion control apparatus sets ignition timing to be after compression top dead center, and sets fuel injection timing to be before the ignition timing and after compression top dead center. The combustion control apparatus inhibits the extremely retarded combustion mode while an exhaust purifier of the internal combustion engine is in a predetermined cold state.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: June 14, 2011
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Shinichi Okamoto, Masayuki Tomita, Taizo Horikomi, Taro Sakai, Akira Nakajima, Hitoshi Ishii, Mitsuhiro Akagi, Takao Maitani, Tomoyuki Takeda, Masatoshi Hidaka, Tomoyuki Shigefuji
  • Control apparatus and method for inner cylinder direct injection spark ignited internal combustion engine
    Patent number: 7350504
    Abstract: In control apparatus and method for an inner cylinder spark ignited internal combustion engine having a fuel injection valve configured to directly inject fuel into an inside of an engine cylinder and a spark plug, a super retard combustion is executed to set an ignition timing after a compression stroke top dead center and to inject fuel before the ignition timing and after the compression stroke top dead center during a predetermined engine driving condition and at least part of fuel is injected before the compression stroke top dead center to decrease a fuel injection quantity after the compression stroke top dead center during an interval which is immediately after an engine start and in which a pressure of fuel is relatively low.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: April 1, 2008
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Makoto Yasunaga, Tomoyuki Takeda, Akira Nakajima, Taizo Horikomi, Daisuke Takaki, Katsuaki Uchiyama, Masatoshi Hidaka, Hitoshi Ishii, Tomoyuki Shigefuji, Masayuki Tomita, Mitsuhiro Akagi
  • Combustion control apparatus for direct-injection spark-ignition internal combustion engine
    Publication number: 20060266020
    Abstract: A combustion control apparatus is configured for a direct-injection spark-ignition internal combustion engine. The combustion control apparatus selects an extremely retarded combustion mode while the internal combustion engine is in a predetermined operating state. In the extremely retarded combustion mode, the combustion control apparatus sets ignition timing to be after compression top dead center, and sets fuel injection timing to be before the ignition timing and after compression top dead center. The combustion control apparatus inhibits the extremely retarded combustion mode while an exhaust purifier of the internal combustion engine is in a predetermined cold state.
    Type: Application
    Filed: May 31, 2006
    Publication date: November 30, 2006
    Inventors: Shinichi Okamoto, Masayuki Tomita, Taizo Horikomi, Taro Sakai, Akira Nakajima, Hitoshi Ishii, Mitsuhiro Akagi, Takao Maitani, Tomoyuki Takeda, Masatoshi Hidaka, Tomoyuki Shigefuji
  • Control apparatus and method for inner cylinder direct injection spark ignited internal combustion engine
    Publication number: 20060266326
    Abstract: In control apparatus and method for an inner cylinder spark ignited internal combustion engine having a fuel injection valve configured to directly inject fuel into an inside of an engine cylinder and a spark plug, a super retard combustion is executed to set an ignition timing after a compression stroke top dead center and to inject fuel before the ignition timing and after the compression stroke top dead center during a predetermined engine driving condition and at least part of fuel is injected before the compression stroke top dead center to decrease a fuel injection quantity after the compression stroke top dead center during an interval which is immediately after an engine start and in which a pressure of fuel is relatively low.
    Type: Application
    Filed: May 31, 2006
    Publication date: November 30, 2006
    Inventors: Makoto Yasunaga, Tomoyuki Takeda, Akira Nakajima, Taizo Horikomi, Daisuke Takaki, Katsuaki Uchiyama, Masatoshi Hidaka, Hitoshi Ishii, Tomoyuki Shigefuji, Masayuki Tomita, Mitsuhiro Akagi