Patents by Inventor Daisuke Umiguchi

Daisuke Umiguchi 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).

  • Vehicle
    Patent number: 10464440
    Abstract: A vehicle includes a drive motor and a motor controller. The drive motor is configured to transfer torque to a wheel. The motor controller is configured to perform torque variation control during a predetermined period, in which, in response to a predetermined trigger for performing a pseudo shift change, torque of the drive motor is decreased by a set variation amount and is then increased.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: November 5, 2019
    Assignee: SUBARU CORPORATION
    Inventors: Hiroyuki Suzuki, Daisuke Umiguchi, Masato Sato, Toshiya Tateishi
  • VEHICLE
    Publication number: 20180281619
    Abstract: A vehicle includes a drive motor and a motor controller. The drive motor is configured to transfer torque to a wheel. The motor controller is configured to perform torque variation control during a predetermined period, in which, in response to a predetermined trigger for performing a pseudo shift change, torque of the drive motor is decreased by a set variation amount and is then increased.
    Type: Application
    Filed: February 26, 2018
    Publication date: October 4, 2018
    Inventors: Hiroyuki SUZUKI, Daisuke UMIGUCHI, Masato SATO, Toshiya TATEISHI
  • VEHICLE CONTROL SYSTEM
    Publication number: 20140137702
    Abstract: A vehicle control system (100) includes a rotary electric machine unit (40), a PCU (14) including an inverter circuit, and a controller (18). The rotary electric machine unit (40) includes a casing defining an interior space and containing a rotary electric machine and a lubricating cooling fluid disposed therein and a cover, and a breather (70) which is connected to the interior space via an on-off valve (58). The on-off valve (58) is normally in an open state. The controller (18) outputs a valve-closing signal to the on-off valve (58) when a single phase short circuit fault occurs in the inverter circuit which drives the rotary electric machine. A mechanical mechanism can also be used to place the on-off valve (58) into a closed state.
    Type: Application
    Filed: November 22, 2013
    Publication date: May 22, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroyuki Tsukashima, Hirotaka Kamijo, Tomoko Shimana, Daisuke Umiguchi
  • VEHICLE CONTROL SYSTEM
    Publication number: 20130046426
    Abstract: A vehicle control system (100) includes a rotary electric machine unit (40), a PCU (14) including an inverter circuit, and a controller (18). The rotary electric machine unit (40) includes a casing defining an interior space and containing a rotary electric machine and a lubricating cooling fluid disposed therein and a cover, and a breather (70) which is connected to the interior space via an on-off valve (58). The on-off valve (58) is normally in an open state. The controller (18) outputs a valve-closing signal to the on-off valve (58) when a single phase short circuit fault occurs in the inverter circuit which drives the rotary electric machine. A mechanical mechanism can also be used to place the on-off valve (58) into a closed state.
    Type: Application
    Filed: May 18, 2010
    Publication date: February 21, 2013
    Inventors: Hiroyuki Tsukashima, Hirotaka Kamijo, Tomoko Shimana, Daisuke Umiguchi