Patents by Inventor Kiyoshi Naiki

Kiyoshi Naiki 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).

  • Internal combustion engine
    Patent number: 8429895
    Abstract: An internal combustion engine includes: an exhaust heat collector, in which exhaust gas exchanges heat with engine coolant, that heats the engine coolant; an EGR mechanism that recirculates a part of the exhaust gas to an intake passage through an EGR passage that branches from an exhaust passage; and an EGR cooler that cools the exhaust gas flowing through the EGR passage through heat exchange with the engine coolant supplied from the exhaust heat collector.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: April 30, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takanori Kawazu, Toshihiro Kawai, Kiyoshi Naiki, Takashi Tsukiyama
  • Gas introducing structure of intake path
    Patent number: 8011352
    Abstract: A gas introducing structure of an intake path includes a gas introducing path introducing a gas into an intake airflow in the intake path of an internal combustion engine, wherein an inner peripheral surface of the gas introducing path is made of a bottom surface appearing as a straight line at a lower side of a perpendicular cross section of the inner peripheral surface and a curved wall surface appearing as a convex curved line, connecting with each end of the straight line at an angle, at an upper side of the perpendicular cross section of the inner peripheral surface.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: September 6, 2011
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Fumihiro Shinkai, Koichi Maruyama, Toshihiro Kawai, Kiyoshi Naiki, Takanori Kawazu, Takeshi Murakami, Takashi Tsukiyama
  • Gas introducing structure of intake path
    Patent number: 7975677
    Abstract: A gas introducing structure of an intake path includes a gas introducing path introducing a gas into an intake airflow in the intake path of an internal combustion engine, wherein an inner peripheral surface of the gas introducing path is made of a bottom surface appearing as a straight line at a lower side of a perpendicular cross section of the inner peripheral surface and a curved wall surface appearing as a convex curved line, connecting with each end of the straight line at an angle, at an upper side of the perpendicular cross section of the inner peripheral surface.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: July 12, 2011
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Fumihiro Shinkai, Koichi Maruyama, Toshihiro Kawai, Kiyoshi Naiki, Takanori Kawazu, Takeshi Murakami, Takashi Tsukiyama
  • INTERNAL COMBUSTION ENGINE
    Publication number: 20100242452
    Abstract: An internal combustion engine includes: an exhaust heat collector, in which exhaust gas exchanges heat with engine coolant, that heats the engine coolant; an EGR mechanism that recirculates a part of the exhaust gas to an intake passage through an EGR passage that branches from an exhaust passage; and an EGR cooler that cools the exhaust gas flowing through the EGR passage through heat exchange with the engine coolant supplied from the exhaust heat collector.
    Type: Application
    Filed: November 26, 2008
    Publication date: September 30, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takanori Kawazu, Toshihiro Kawai, Kiyoshi Naiki, Takashi Tsukiyama
  • Gas introducing structure of intake path
    Publication number: 20090223476
    Abstract: A gas introducing structure of an intake path includes a gas introducing path introducing a gas into an intake airflow in the intake path of an internal combustion engine, wherein an inner peripheral surface of the gas introducing path is made of a bottom surface appearing as a straight line at a lower side of a perpendicular cross section of the inner peripheral surface and a curved wall surface appearing as a convex curved line, connecting with each end of the straight line at an angle, at an upper side of the perpendicular cross section of the inner peripheral surface.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 10, 2009
    Inventors: Fumihiro Shinkai, Koichi Maruyama, Toshihiro Kawai, Kiyoshi Naiki, Takanori Kawazu, Takeshi Murakami, Takashi Tsukiyama