Patents by Inventor Kentaro YUTANI

Kentaro YUTANI 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: 11067181
    Abstract: A valve device includes: a valve having a ball surface having a convex spherical shape, and a first opening opened in the ball surface to allow fluid to pass through; and a seat having an annular shape and opposing the ball surface to be in sliding contact, the seat being pressed against the ball surface, the seat having a second opening to communicate with the first opening. The seat has a sealing surface in a sliding contact with the ball surface at a valve closed time when the ball surface and the second opening overlap with each other, and a seat contact surface in a sliding contact with an opening inner wall surface or an opening end surface of the first opening at a valve opened time when the first opening and the second opening overlap with each other.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: July 20, 2021
    Assignee: DENSO CORPORATION
    Inventors: Kentaro Yutani, Takumi Kataoka, Naohito Seko
  • Publication number: 20200056706
    Abstract: A valve device includes: a valve having a ball surface having a convex spherical shape, and a first opening opened in the ball surface to allow fluid to pass through; and a seat having an annular shape and opposing the ball surface to be in sliding contact, the seat being pressed against the ball surface, the seat having a second opening to communicate with the first opening. The seat has a sealing surface in a sliding contact with the ball surface at a valve closed time when the ball surface and the second opening overlap with each other, and a seat contact surface in a sliding contact with an opening inner wall surface or an opening end surface of the first opening at a valve opened time when the first opening and the second opening overlap with each other.
    Type: Application
    Filed: August 30, 2019
    Publication date: February 20, 2020
    Inventors: KENTARO YUTANI, Takumi Kataoka, Naohito Seko
  • Patent number: 10539063
    Abstract: The cooling system is provided with an internal passage for circulating the cooling water inside an internal combustion engine, a water pump provided in an one end side external passage connected to the one end portion of the internal passage, and an ECU configured to execute a water flow switching control that switches a cooling water flow in the internal passage between a forward flow directed from the one end portion of the internal passage to the other end portion and a reverse flow directed from the other end portion to the one end portion.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: January 21, 2020
    Assignees: DENSO CORPORATION, SOKEN, INC.
    Inventors: Yuji Ito, Kentaro Yutani, Tomotaka Sugishita, Motomasa Iizuka, Takeo Matsumoto
  • Patent number: 10443745
    Abstract: A valve device includes: a valve having a ball surface having a convex spherical shape, and a first opening opened in the ball surface to allow fluid to pass through; and a seat having an annular shape and opposing the ball surface to be in sliding contact, the seat being pressed against the ball surface, the seat having a second opening to communicate with the first opening. The seat has a sealing surface in a sliding contact with the ball surface at a valve closed time when the ball surface and the second opening overlap with each other, and a seat contact surface in a sliding contact with an opening inner wall surface or an opening end surface of the first opening at a valve opened time when the first opening and the second opening overlap with each other.
    Type: Grant
    Filed: March 24, 2016
    Date of Patent: October 15, 2019
    Assignee: DENSO CORPORATION
    Inventors: Kentaro Yutani, Takumi Kataoka, Naohito Seko
  • Publication number: 20190170051
    Abstract: The cooling system is provided with an internal passage for circulating the cooling water inside an internal combustion engine, a water pump provided in an one end side external passage connected to the one end portion of the internal passage, and an ECU configured to execute a water flow switching control that switches a cooling water flow in the internal passage between a forward flow directed from the one end portion of the internal passage to the other end portion and a reverse flow directed from the other end portion to the one end portion.
    Type: Application
    Filed: January 28, 2019
    Publication date: June 6, 2019
    Inventors: Yuji ITO, Kentaro YUTANI, Tomotaka SUGISHITA, Motomasa IIZUKA, Takeo MATSUMOTO
  • Publication number: 20180031132
    Abstract: A valve device includes: a valve having a ball surface having a convex spherical shape, and a first opening opened in the ball surface to allow fluid to pass through; and a seat having an annular shape and opposing the ball surface to be in sliding contact, the seat being pressed against the ball surface, the seat having a second opening to communicate with the first opening. The seat has a sealing surface in a sliding contact with the ball surface at a valve closed time when the ball surface and the second opening overlap with each other, and a seat contact surface in a sliding contact with an opening inner wall surface or an opening end surface of the first opening at a valve opened time when the first opening and the second opening overlap with each other.
    Type: Application
    Filed: March 24, 2016
    Publication date: February 1, 2018
    Inventors: Kentaro YUTANI, Takumi KATAOKA, Naohito SEKO
  • Patent number: 8528388
    Abstract: An engine control system includes an engine that outputs a rotation of a crankshaft through a torsional damper; a calculation portion that calculates a value of engine torque based on an angular acceleration of the crankshaft and a moment of inertia of the crankshaft; and a correction portion that calculates a correction value based on a torsional angle of the torsional damper, and corrects the calculated value of the engine torque using the correction value.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: September 10, 2013
    Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Soken, Inc
    Inventors: Kentaro Yutani, Takanobu Kawano, Yoshiaki Atsumi, Hiroshi Kanai, Koji Miwa
  • Publication number: 20090229897
    Abstract: An engine control system includes an engine that outputs a rotation of a crankshaft through a torsional damper; a calculation portion that calculates a value of engine torque based on an angular acceleration of the crankshaft and a moment of inertia of the crankshaft; and a correction portion that calculates a correction value based on a torsional angle of the torsional damper, and corrects the calculated value of the engine torque using the correction value.
    Type: Application
    Filed: January 15, 2009
    Publication date: September 17, 2009
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON SOKEN, INC.
    Inventors: Kentaro YUTANI, Takanobu Kawano, Yoshiaki Atsumi, Hiroshi Kanai, Koji Miwa