Patents by Inventor Takahiro OHMI

Takahiro OHMI 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: 10889161
    Abstract: An electric vehicle includes an electric motor, a power storage device, a control device, and a refrigerant circuit. The refrigerant circuit includes a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a first expansion valve, a second expansion valve, and a second indoor heat exchanger. The control device repeats an operation of performing the other of a first operation and a second operation after performing one thereof when a remaining capacity of a power storage device is equal to or larger than a predetermined value. In the first operation, the first expansion valve is not decompressed and the second expansion valve is decompressed. In the second operation, the first expansion valve is decompressed and the second expansion valve is not decompressed.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: January 12, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Yoshiyuki Takeuchi, Ryoma Taguchi, Takahiro Ohmi, Osamu Ishida
  • Publication number: 20190193520
    Abstract: A motor-driven vehicle includes an electric motor, a power storage device, a controller, and a refrigerant circuit. The refrigerant circuit includes a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a first expansion valve, a second expansion valve, and a second indoor heat exchanger. The controller switches a ratio of an amount of pressure reduction of the second expansion valve to an amount of pressure reduction of the first expansion valve with a predetermined temperature as a boundary when a remaining capacity of the power storage device is equal to or greater than a predetermined value.
    Type: Application
    Filed: December 6, 2018
    Publication date: June 27, 2019
    Inventors: Isao Tsunoda, Osamu Ishida, Yoshiyuki Takeuchi, Ryoma Taguchi, Takahiro Ohmi
  • Publication number: 20190193523
    Abstract: An electric vehicle includes an electric motor, a power storage device, a control device, and a refrigerant circuit. The refrigerant circuit includes a compressor, an outdoor heat exchanger, an expansion valve, a first indoor heat exchanger, and a heating decompression valve. The heating decompression valve changes a passage resistance between the compressor and the outdoor heat exchanger. The control device increases the passage resistance by the heating decompression valve when the remaining capacity of the power storage device is equal to or larger than a predetermined value.
    Type: Application
    Filed: December 13, 2018
    Publication date: June 27, 2019
    Inventors: Yoshiyuki Takeuchi, Isao Tsunoda, Osamu Ishida, Nobumasa Toyoshima, Ryoma Taguchi, Takahiro Ohmi
  • Publication number: 20190193515
    Abstract: An electric vehicle includes an electric motor, a power storage device, a control device, and a refrigerant circuit. The refrigerant circuit includes a compressor, an outdoor heat exchanger, a first indoor heat exchanger, a first expansion valve, a second expansion valve, and a second indoor heat exchanger. The control device repeats an operation of performing the other of a first operation and a second operation after performing one thereof when a remaining capacity of a power storage device is equal to or larger than a predetermined value. In the first operation, the first expansion valve is not decompressed and the second expansion valve is decompressed. In the second operation, the first expansion valve is decompressed and the second expansion valve is not decompressed.
    Type: Application
    Filed: December 12, 2018
    Publication date: June 27, 2019
    Inventors: Yoshiyuki Takeuchi, Ryoma Taguchi, Takahiro Ohmi, Osamu Ishida
  • Patent number: 9688254
    Abstract: A stop control system for a vehicle is provided, which is capable of stably performing cranking for restarting an internal combustion engine and positively preventing the vehicle from moving by properly increasing a braking force of the vehicle, during an idle stop. In the stop control system for a vehicle according to the present invention, the engine 3 is cranked by the starter motor 6 using the power supplied from the battery 7, when restart conditions are satisfied (step 8 in FIG. 5). Further, the stop control system includes a hydraulic pump 55 driven by the power supplied from the battery 7, for increasing the braking force of the vehicle V. During a stop of the vehicle V, it is determined whether or not the braking force of the vehicle V needs to be increased (FIG. 6), and the hydraulic pump 55 is controlled according to a determination result.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: June 27, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Eisuke Horii, Yoshinari Sugita, Shinichi Arai, Syumpei Tahara, Tomohiro Watanabe, Hiroshi Yoneguchi, Masahiko Asakura, Ryuji Sato, Takahiro Ohmi, Hideo Takeuchi
  • Patent number: 9463781
    Abstract: A stop control system for a vehicle, which is capable of positively preventing movement of a vehicle by positively increasing a braking force of the vehicle during an idle stop. In the stop control system for a vehicle of the present invention, the engine 3 is cranked by a starter motor 6 using power supplied from the battery 7 when restart conditions are satisfied during an idle stop (step 8 in FIG. 5). Further, the stop control system includes a hydraulic pump 55 driven by power supplied from the battery 7, for increasing the braking force of the vehicle V. During a stop of the vehicle V, when it is determined that the braking force of the vehicle V needs to be increased (F_BFREQ=1), the hydraulic pump 55 is activated. Further, if the restart conditions are satisfied during operation of the hydraulic pump 55, the cranking is inhibited to continue the operation of the hydraulic pump 55 (steps 6 to 9 in FIG. 5).
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: October 11, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Eisuke Horii, Yoshinari Sugita, Shinichi Arai, Syumpei Tahara, Tomohiro Watanabe, Hiroshi Yoneguchi, Masahiko Asakura, Ryuji Sato, Takahiro Ohmi, Hideo Takeuchi
  • Publication number: 20150307069
    Abstract: A stop control system for a vehicle is provided, which is capable of stably performing cranking for restarting an internal combustion engine and positively preventing the vehicle from moving by properly increasing a braking force of the vehicle, during an idle stop. In the stop control system for a vehicle according to the present invention, the engine 3 is cranked by the starter motor 6 using the power supplied from the battery 7, when restart conditions are satisfied (step 8 in FIG. 5). Further, the stop control system includes a hydraulic pump 55 driven by the power supplied from the battery 7, for increasing the braking force of the vehicle V. During a stop of the vehicle V, it is determined whether or not the braking force of the vehicle V needs to be increased (FIG. 6), and the hydraulic pump 55 is controlled according to a determination result.
    Type: Application
    Filed: November 13, 2012
    Publication date: October 29, 2015
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Eisuke HORII, Yoshinari SUGITA, Shinichi ARAI, Syumpei TAHARA, Tomohiro WATANABE, Hiroshi YONEGUCHI, Masahiko ASAKURA, Ryuji SATO, Takahiro OHMI, Hideo TAKEUCHI
  • Publication number: 20150298665
    Abstract: A stop control system for a vehicle, which is capable of positively preventing movement of a vehicle by positively increasing a braking force of the vehicle during an idle stop. In the stop control system for a vehicle of the present invention, the engine 3 is cranked by a starter motor 6 using power supplied from the battery 7 when restart conditions are satisfied during an idle stop (step 8 in FIG. 5). Further, the stop control system includes a hydraulic pump 55 driven by power supplied from the battery 7, for increasing the braking force of the vehicle V. During a stop of the vehicle V, when it is determined that the braking force of the vehicle V needs to be increased (F_BFREQ=1), the hydraulic pump 55 is activated. Further, if the restart conditions are satisfied during operation of the hydraulic pump 55, the cranking is inhibited to continue the operation of the hydraulic pump 55 (steps 6 to 9 in FIG. 5).
    Type: Application
    Filed: November 13, 2012
    Publication date: October 22, 2015
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Eisuke HORII, Yoshinari SUGITA, Shinichi ARAI, Syumpei TAHARA, Tomohiro WATANABE, Hiroshi YONEGUCHI, Masahiko ASAKURA, Ryuji SATO, Takahiro OHMI, Hideo TAKEUCHI