Patents by Inventor Hiroki HANAE

Hiroki HANAE 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).

  • Shift control device for automatic transmission
    Patent number: 11359718
    Abstract: A shift control device for an automatic transmission includes: an engagement control unit that controls an engagement hydraulic pressure supplied to an engagement hydraulic chamber of an engagement side friction element; a hydraulic pressure detecting unit that detects the engagement hydraulic pressure; a reference setting unit that calculates a predicted value of the engagement hydraulic pressure during shifting, based on a rising characteristic of the engagement hydraulic pressure from when supply of the engagement hydraulic pressure is started to when engagement of the engagement side friction element is started, and sets the predicted value as a reference hydraulic pressure; and an engagement start detecting unit that detects an engagement start time point of the engagement side friction element, based on a difference between the hydraulic pressure detected by the hydraulic pressure detecting unit during the shifting and the reference hydraulic pressure.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: June 14, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Tadashi Saito, Tomohiro Kubo, Hiroki Hanae, Yasunari Nakayama
  • SHIFT CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
    Publication number: 20200309260
    Abstract: A shift control device for an automatic transmission includes: an engagement control unit that controls an engagement hydraulic pressure supplied to an engagement hydraulic chamber of an engagement side friction element; a hydraulic pressure detecting unit that detects the engagement hydraulic pressure; a reference setting unit that calculates a predicted value of the engagement hydraulic pressure during shifting, based on a rising characteristic of the engagement hydraulic pressure from when supply of the engagement hydraulic pressure is started to when engagement of the engagement side friction element is started, and sets the predicted value as a reference hydraulic pressure; and an engagement start detecting unit that detects an engagement start time point of the engagement side friction element, based on a difference between the hydraulic pressure detected by the hydraulic pressure detecting unit during the shifting and the reference hydraulic pressure.
    Type: Application
    Filed: October 5, 2018
    Publication date: October 1, 2020
    Inventors: Tadashi SAITO, Tomohiro KUBO, Hiroki HANAE, Yasunari NAKAYAMA