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).
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Patent number: 11067181Abstract: 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: GrantFiled: August 30, 2019Date of Patent: July 20, 2021Assignee: DENSO CORPORATIONInventors: Kentaro Yutani, Takumi Kataoka, Naohito Seko
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Publication number: 20200056706Abstract: 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: ApplicationFiled: August 30, 2019Publication date: February 20, 2020Inventors: KENTARO YUTANI, Takumi Kataoka, Naohito Seko
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Patent number: 10539063Abstract: 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: GrantFiled: January 28, 2019Date of Patent: January 21, 2020Assignees: DENSO CORPORATION, SOKEN, INC.Inventors: Yuji Ito, Kentaro Yutani, Tomotaka Sugishita, Motomasa Iizuka, Takeo Matsumoto
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Patent number: 10443745Abstract: 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: GrantFiled: March 24, 2016Date of Patent: October 15, 2019Assignee: DENSO CORPORATIONInventors: Kentaro Yutani, Takumi Kataoka, Naohito Seko
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Publication number: 20190170051Abstract: 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: ApplicationFiled: January 28, 2019Publication date: June 6, 2019Inventors: Yuji ITO, Kentaro YUTANI, Tomotaka SUGISHITA, Motomasa IIZUKA, Takeo MATSUMOTO
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Publication number: 20180031132Abstract: 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: ApplicationFiled: March 24, 2016Publication date: February 1, 2018Inventors: Kentaro YUTANI, Takumi KATAOKA, Naohito SEKO
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Patent number: 8528388Abstract: 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: GrantFiled: January 15, 2009Date of Patent: September 10, 2013Assignees: Toyota Jidosha Kabushiki Kaisha, Nippon Soken, IncInventors: Kentaro Yutani, Takanobu Kawano, Yoshiaki Atsumi, Hiroshi Kanai, Koji Miwa
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Publication number: 20090229897Abstract: 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: ApplicationFiled: January 15, 2009Publication date: September 17, 2009Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, NIPPON SOKEN, INC.Inventors: Kentaro YUTANI, Takanobu Kawano, Yoshiaki Atsumi, Hiroshi Kanai, Koji Miwa