Patents by Inventor Masaki Amakawa

Masaki Amakawa 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).

  • Publication number: 20240372431
    Abstract: A rotary electric machine includes a rotor directly joined to an output shaft of an internal-combustion engine. The rotary electric machine includes a first housing, a second housing that is mounted to the first housing and is fixed to a housing of the internal-combustion engine, a stator that is fixed to the first housing or the second housing, and a holding part that is provided to the second housing and holds the rotor so as to be rotatable with respect to the stator at a predetermined position. The rotor includes a joint part directly joined to the output shaft and rotates with respect to the stator at the predetermined position. The first housing and the second housing accommodate the stator and the rotor in a state in which the joint part is capable of being directly joined to the output shaft.
    Type: Application
    Filed: July 19, 2024
    Publication date: November 7, 2024
    Applicant: DENSO CORPORATION
    Inventors: Masaki AMAKAWA, Akira SAKAMOTO
  • Publication number: 20240227776
    Abstract: A control apparatus for a rotating electric machine is provided. The rotating electric machine includes a moving portion that applies torque to a drive shaft of an internal combustion engine. The control apparatus acquires a rotational frequency signal that is a signal that changes depending on a rotational frequency of the moving portion per unit time. The control apparatus calculates a damping torque that is applied from the moving portion to the drive shaft to suppress vibration during operation of the internal combustion engine. The control apparatus calculates the damping torque based on the rotational frequency signal acquired by the signal acquiring unit in response to the rotating electric machine performing cranking of the internal combustion engine.
    Type: Application
    Filed: December 29, 2023
    Publication date: July 11, 2024
    Applicant: DENSO CORPORATION
    Inventors: Syuya KAMIZONO, Akira Sakamoto, Yuichi Handa, Masaki Amakawa, Keisuke Kawai
  • Publication number: 20240200634
    Abstract: A vehicle power transmission apparatus including: (i) a flywheel provided with a center hole in which an end portion of a crankshaft of an engine is inserted such that an outer circumferential surface of the end portion of the crankshaft is fitted in a fitting portion of the center hole; (ii) an input shaft to which a power of the engine is transmitted through the flywheel; and (iii) a disk including an outer peripheral portion connected to an outer peripheral portion of the flywheel, and provided with a center hole spline-fitted on an outer circumferential surface of an engine-side end portion of the input shaft. The outer circumferential surface of the engine-side end portion of the input shaft has a diameter larger than a diameter of the fitting portion of the center hole of the flywheel.
    Type: Application
    Filed: December 14, 2023
    Publication date: June 20, 2024
    Applicants: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Shintaro HOTTA, Masaki AMAKAWA
  • Publication number: 20240132049
    Abstract: A control apparatus for a rotating electric machine is provided. The rotating electric machine includes a moving portion that applies torque to a drive shaft of an internal combustion engine. The control apparatus acquires a rotational frequency signal that is a signal that changes depending on a rotational frequency of the moving portion per unit time. The control apparatus calculates a damping torque that is applied from the moving portion to the drive shaft to suppress vibration during operation of the internal combustion engine. The control apparatus calculates the damping torque based on the rotational frequency signal acquired by the signal acquiring unit in response to the rotating electric machine performing cranking of the internal combustion engine.
    Type: Application
    Filed: December 29, 2023
    Publication date: April 25, 2024
    Applicant: DENSO CORPORATION
    Inventors: Syuya KAMIZONO, Akira Sakamoto, Yuichi Handa, Masaki Amakawa, Keisuke Kawai
  • Publication number: 20240120805
    Abstract: A rotating electrical machine includes a stator equipped with a stator winding, a rotor arranged to face the stator, a housing in which the stator and the rotor are disposed, and a coolant supply unit. The coolant supply unit is located vertically above the stator and the rotor in the housing in a condition where the rotating electrical machine is mounted in place. The coolant supply unit works to deliver liquid coolant into the housing. A coolant guide is provided to direct the coolant, as supplied from the coolant supply unit, into an air gap between the stator and the rotor in the housing.
    Type: Application
    Filed: December 20, 2023
    Publication date: April 11, 2024
    Applicant: DENSO CORPORATION
    Inventors: Masaki AMAKAWA, Yuichi HANDA, Keisuke KAWAI, Syuya KAMIZONO, Akira SAKAMOTO
  • Publication number: 20200324669
    Abstract: A vehicle seat control device is mounted on a vehicle that is switchable between autonomous driving and manual driving, and the vehicle control device controls a state of a vehicle seat. The vehicle seat control device includes a seat state changer, a load detector, and a controller. The seat state changer changes the state of the vehicle seat. The load detector detects a load applied to the vehicle seat. The controller controls the seat state changer in accordance with the load detected by the load detector. The controller is configured to limit a state change of the vehicle seat caused by the seat state changer during the manual driving more than a state change of the vehicle seat caused by the seat state changer during the autonomous driving.
    Type: Application
    Filed: December 11, 2018
    Publication date: October 15, 2020
    Applicant: DENSO CORPORATION
    Inventor: Masaki AMAKAWA
  • Patent number: 9856687
    Abstract: A vehicle window opening device includes an open-close controller, a drawing determination unit, a restriction unit, and an initial mask zone setting unit. The drawing determination unit determines that a vehicle window has drawn in an object when a characteristic value of a motor is greater than or equal to a determination threshold value. The open-close controller executes anti-drawing control based on the drawing determination. The restriction unit restricts the open-close controller from executing the anti-drawing control when the vehicle window is located in the initial mask zone. The initial mask zone setting unit sets an initial mask zone to a normal value when a position where the vehicle window starts to open is located outside a fully closed region and to a fully closed region value that is greater than the normal value when the position where the vehicle window starts to open is located in the fully closed region.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: January 2, 2018
    Assignee: ASMO CO., LTD.
    Inventors: Kazuyuki Shibata, Masaru Kubota, Masaki Amakawa
  • Publication number: 20160215553
    Abstract: A vehicle window opening device includes an open-close controller, a drawing determination unit, a restriction unit, and an initial mask zone setting unit. The drawing determination unit determines that a vehicle window has drawn in an object when a characteristic value of a motor is greater than or equal to a determination threshold value. The open-close controller executes anti-drawing control based on the drawing determination. The restriction unit restricts the open-close controller from executing the anti-drawing control when the vehicle window is located in the initial mask zone. The initial mask zone setting unit sets an initial mask zone to a normal value when a position where the vehicle window starts to open is located outside a fully closed region and to a fully closed region value that is greater than the normal value when the position where the vehicle window starts to open is located in the fully closed region.
    Type: Application
    Filed: January 21, 2016
    Publication date: July 28, 2016
    Applicant: ASMO CO., LTD.
    Inventors: Kazuyuki Shibata, Masaru Kubota, Masaki Amakawa