Patents by Inventor Yuuzou Kageyama

Yuuzou Kageyama 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: 10253876
    Abstract: A vehicle regenerative speed control device is provided for suppressing undershooting, in which an actual transmission input rotational speed falls below a lower-limit rotational speed, when decreasing a transmission input rotational speed based on a request for a decrease in the regeneration amount during regenerative speed control. The vehicle regenerative speed control device includes a controller which performs a regenerative speed control for downshifting a continuously variable transmission to a low gear ratio side and increasing a rotational speed of a transmission input shaft to which a motor generator is connected when there is a request for an increase in the regeneration amount while decelerating.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 9, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takanobu Mouri, Takahiro Yoshino, Yuuzou Kageyama, Masashi Ono, Hideki Maruyama, Takuya Ishizuka
  • Patent number: 10246077
    Abstract: A vehicle regenerative speed control device is provided that includes a controller which performs a regenerative speed control for downshifting a belt-type continuously variable transmission to the low gear ratio side and increasing a rotational speed of a transmission input shaft to which a motor generator is connected when there is a request for an increase in the regeneration amount while decelerating. The controller also imposes the limitation of staying within a Pri end command rotational speed change rate for the Pri end command rotational speed when performing a regenerative speed control for increasing the Pri end command rotational speed based on a braking operation in a brake switching region for switching from regenerative braking to hydraulic braking due to a decrease in vehicle speed.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 2, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Takanobu Mouri, Takahiro Yoshino, Yuuzou Kageyama, Masashi Ono, Hideki Maruyama, Takuya Ishizuka
  • Patent number: 10071740
    Abstract: A vehicle control apparatus includes: a first target driving force calculation unit that calculates a first target driving force based on an accelerator pedal opening; a target speed ratio calculation unit that calculates a target speed ratio of a continuously variable transmission based on the first target driving force; a target torque calculation unit that calculates a target torque of a driving source based on the first target driving force; an air density detection unit that detects air density; and a first correction unit that corrects only the target torque, out of the target speed ratio and the target torque, in accordance with the air density.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: September 11, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Masashi Ono, Takahiro Yoshino, Yuuzou Kageyama
  • Publication number: 20180244258
    Abstract: A vehicle regenerative speed control device is provided that includes a controller which performs a regenerative speed control for downshifting a belt-type continuously variable transmission to the low gear ratio side and increasing a rotational speed of a transmission input shaft to which a motor generator is connected when there is a request for an increase in the regeneration amount while decelerating. The controller also imposes the limitation of staying within a Pri end command rotational speed change rate for the Pri end command rotational speed when performing a regenerative speed control for increasing the Pri end command rotational speed based on a braking operation in a brake switching region for switching from regenerative braking to hydraulic braking due to a decrease in vehicle speed.
    Type: Application
    Filed: March 20, 2015
    Publication date: August 30, 2018
    Inventors: Takanobu MOURI, Takahiro YOSHINO, Yuuzou KAGEYAMA, Masashi ONO, Hideki MARUYAMA, Takuya ISHIZUKA
  • Publication number: 20180106367
    Abstract: A vehicle regenerative speed control device is provided for suppressing undershooting, in which an actual transmission input rotational speed falls below a lower-limit rotational speed, when decreasing a transmission input rotational speed based on a request for a decrease in the regeneration amount during regenerative speed control. The vehicle regenerative speed control device includes a controller which performs a regenerative speed control for downshifting a continuously variable transmission to a low gear ratio side and increasing a rotational speed of a transmission input shaft to which a motor generator is connected when there is a request for an increase in the regeneration amount while decelerating.
    Type: Application
    Filed: March 20, 2015
    Publication date: April 19, 2018
    Inventors: Takanobu MOURI, Takahiro YOSHINO, Yuuzou KAGEYAMA, Masashi ONO, Hideki MARUYAMA, Takuya ISHIZUKA
  • Publication number: 20150314787
    Abstract: A vehicle control apparatus includes: a first target driving force calculation unit that calculates a first target driving force based on an accelerator pedal opening; a target speed ratio calculation unit that calculates a target speed ratio of a continuously variable transmission based on the first target driving force; a target torque calculation unit that calculates a target torque of a driving source based on the first target driving force; an air density detection unit that detects air density; and a first correction unit that corrects only the target torque, out of the target speed ratio and the target torque, in accordance with the air density.
    Type: Application
    Filed: October 3, 2013
    Publication date: November 5, 2015
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Masashi Ono, Takahiro Yoshino, Yuuzou Kageyama