Patents by Inventor Takayuki Fuyuto

Takayuki Fuyuto 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).

  • Patent number: 10247163
    Abstract: An ignition device for an internal combustion engine is provided which improves ignition while reducing electric power consumption. An ignition device for an internal combustion engine includes an ignition plug that is placed with a tip exposed on an end in an axial direction of a combustion chamber formed in a cylinder and that includes a central electrode and a grounding electrode provided opposing each other at the tip, and a magnetic field former that forms a magnetic field in a direction in which a magnetic field vector substantially vertically passes through an approximate two-dimensional plane including a spark discharge path formed, by a gas flow ejected to the end in the axial direction of the combustion chamber, between the central electrode and the grounding electrode, and extending in an approximate U shape in a direction orthogonal to the opposing direction of the electrodes.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: April 2, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masao Kinoshita, Takayuki Fuyuto, Ryou Masuda, Yoshihiro Hotta
  • Patent number: 10208730
    Abstract: An ignition device for an internal combustion engine is provided which improves ignition while reducing electric power consumption. An ignition device for an internal combustion engine includes an ignition plug that is placed with a tip exposed on an end in an axial direction of a combustion chamber formed in a cylinder and that includes a central electrode and a grounding electrode provided opposing each other at the tip, and a magnetic field former that forms a magnetic field in a direction in which a magnetic field vector substantially vertically passes through an approximate two-dimensional plane including a spark discharge path formed, by a gas flow ejected to the end in the axial direction of the combustion chamber, between the central electrode and the grounding electrode, and extending in an approximate U shape in a direction orthogonal to the opposing direction of the electrodes.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: February 19, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masao Kinoshita, Takayuki Fuyuto, Ryou Masuda, Yoshihiro Hotta
  • Publication number: 20180238293
    Abstract: An ignition device for an internal combustion engine with an ignition plug that ignites an air-fuel mixture in a combustion chamber, wherein a discharge current i provided by the ignition plug to the air-fuel mixture is controlled to be greater than a discharge current reference value ibf, which is a minimum current value at which a spark discharge blow-out phenomenon does not arise.
    Type: Application
    Filed: February 9, 2018
    Publication date: August 23, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Shogo SAYAMA, Ryou MASUDA, Takayuki FUYUTO, Masao KINOSHITA, Yoshihiro NOMURA
  • Publication number: 20180128233
    Abstract: An ignition device for an internal combustion engine is provided which improves ignition while reducing electric power consumption. An ignition device for an internal combustion engine includes an ignition plug that is placed with a tip exposed on an end in an axial direction of a combustion chamber formed in a cylinder and that includes a central electrode and a grounding electrode provided opposing each other at the tip, and a magnetic field former that forms a magnetic field in a direction in which a magnetic field vector substantially vertically passes through an approximate two-dimensional plane including a spark discharge path formed, by a gas flow ejected to the end in the axial direction of the combustion chamber, between the central electrode and the grounding electrode, and extending in an approximate U shape in a direction orthogonal to the opposing direction of the electrodes.
    Type: Application
    Filed: November 6, 2017
    Publication date: May 10, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Masao KINOSHITA, Takayuki FUYUTO, Ryou MASUDA, Yoshihiro HOTTA
  • Publication number: 20170234287
    Abstract: An internal combustion engine includes a spark plug which protrudes into a combustion chamber. The spark plug has a central electrode and a ground electrode, and is configured such that a spark is generated between the central electrode and the ground electrode by electrical discharge. The spark plug has a vortex generator that separates an air flow near the ground electrode from the ground electrode and generates a vortex at a downstream side. The central electrode and the ground electrode are placed in a manner such that a spark or a flame deformed by an air flow flowing between the central electrode and the ground electrode enters the trailing vortex, or the spark penetrates through the inside of the trailing vortex.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 17, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO
    Inventors: Ryou MASUDA, Takayuki FUYUTO, Makoto NAGAOKA
  • Patent number: 9677497
    Abstract: A fuel injection control apparatus of a compression ignition type internal combustion engine includes a controller adapted to control an injector so that pre-stage injection and post-stage injection are performed as fuel injection during one cycle. The controller controls an interval between the timing of the pre-stage injection and the timing of the post-stage injection so that an interval ?t1 between the timing of the pre-stage peak and the timing of the post-stage peak approximately satisfies a condition. The condition is that the interval ?t1 is 0.5 times an inverse number of the frequency f0 at which a combustion noise level becomes the maximum.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: June 13, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi Kuzuyama, Tsutomu Umehara, Takayuki Fuyuto, Masahiro Taki
  • Publication number: 20150090217
    Abstract: A fuel injection control apparatus of a compression ignition type internal combustion engine includes a controller adapted to control an injector so that pre-stage injection and post-stage injection are performed as fuel injection during one cycle. The controller controls an interval between the timing of the pre-stage injection and the timing of the post-stage injection so that an interval ?t1 between the timing of the pre-stage peak and the timing of the post-stage peak approximately satisfies a condition. The condition is that the interval ?t1 is 0.5 times an inverse number of the frequency f0 at which a combustion noise level becomes the maximum.
    Type: Application
    Filed: September 29, 2014
    Publication date: April 2, 2015
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hiroshi KUZUYAMA, Tsutomu UMEHARA, Takayuki FUYUTO, Masahiro TAKI
  • Patent number: 6799551
    Abstract: A state of combustion in a combustion chamber is controlled by stratifying an intake gas charge within the combustion chamber, so as to reduce amounts of harmful substances left in exhaust gas. A direct-injection type internal combustion engine in which a fuel is injected into the combustion chamber and which is arranged to stratify the intake gas charge within the combustion chamber (1) such that intake gases of different compositions exist in a central portion (13) of the combustion chamber including a position of the fuel injection, and in a peripheral portion of the combustion chamber, upon initiation of combustion of the fuel at a point of time near a terminal period of a compression stroke. The intake gases of different compositions may be intake gases having different concentrations of a specific component such as recirculated exhaust gas and the fuel.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: October 5, 2004
    Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kabushiki Kaisha
    Inventors: Kiyomi Nakakita, Takayuki Fuyuto, Kazuhisa Inagaki, Yoshihiro Hotta, Kazuhiro Akihama, Minaji Inayoshi, Ichiro Sakata
  • Publication number: 20030005907
    Abstract: A state of combustion in a combustion chamber is controlled by stratifying an intake gas charge within the combustion chamber, so as to reduce amounts of harmful substances left in exhaust gas. A direct-injection type internal combustion engine in which a fuel is injected into the combustion chamber and which is arranged to stratify the intake gas charge within the combustion chamber (1) such that intake gases of different compositions exist in a central portion (13) of the combustion chamber including a position of the fuel injection, and in a peripheral portion of the combustion chamber, upon initiation of combustion of the fuel at a point of time near a terminal period of a compression stroke. The intake gases of different compositions may be intake gases having different concentrations of a specific component such as recirculated exhaust gas and the fuel.
    Type: Application
    Filed: July 22, 2002
    Publication date: January 9, 2003
    Inventors: Kiyomi Nakakita, Takayuki Fuyuto, Kazuhisa Inagaki, Yoshihiro Hotta, Kazuhiro Akihama, Minaji Inayoshi, Ichiro Sakata
  • Patent number: 6161518
    Abstract: A direct-injection diesel engine in which a shallow-dish type piston cavity is formed on a top surface of a piston; wherein in the vicinity of the top dead center, a squish area is defined mainly by the top surface of the piston and an inner surface of a cylinder head opposite the top surface; when a velocity of a reverse squish flow from the shallow-dish type piston cavity to the squish area, generated due to a movement of the piston and is represented by Vs, and a fuel spray velocity in the vicinity of a lip portion of the shallow-dish type piston cavity is represented by Vsp, the distance between opposite wall portions of the shallow-dish type piston cavity is set such that the ratio Vs/Vsp is not greater than 1.25; and the squish area constitutes a part of the combustion chamber.
    Type: Grant
    Filed: March 26, 1999
    Date of Patent: December 19, 2000
    Assignee: Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Kiyomi Nakakita, Minaji Inayoshi, Kazuhisa Inagaki, Yoshihiro Hotta, Takayuki Fuyuto