Patents by Inventor Koutarou Tagami

Koutarou Tagami 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).

  • Control device for vehicle and control method for vehicle
    Patent number: 11535229
    Abstract: A controller includes a control unit configured to perform stepwise shift that upshifts a CVT in a stepped manner to accelerate a vehicle. The control unit performs a downshift control configured to downshift the continuously variable transmission in a case in which an accelerator pedal is continuously stepped on from before prohibition of the stepwise shift to after prohibition of the stepwise shift.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: December 27, 2022
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Jonghwan Lee, Tomoaki Honma, Satoshi Nakano, Koutarou Tagami, Yusuke Ushikubo
  • CONTROL DEVICE FOR VEHICLE AND CONTROL METHOD FOR VEHICLE
    Publication number: 20220055601
    Abstract: A controller includes a control unit configured to perform stepwise shift that upshifts a CVT in a stepped manner to accelerate a vehicle. The control unit performs a downshift control configured to downshift the continuously variable transmission in a case in which an accelerator pedal is continuously stepped on from before prohibition of the stepwise shift to after prohibition of the stepwise shift.
    Type: Application
    Filed: November 19, 2019
    Publication date: February 24, 2022
    Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.
    Inventors: Jonghwan LEE, Tomoaki HONMA, Satoshi NAKANO, Koutarou TAGAMI, Yusuke USHIKUBO
  • Control device for continuously variable transmission
    Patent number: 10385968
    Abstract: Disclosed is a control device for a continuously variable transmission (4) that has, as forward speed change stages, a first speed change stage (32) and a second speed change stage (33).
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: August 20, 2019
    Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.
    Inventors: Seiichiro Takahashi, Takuichiro Inoue, Koutarou Tagami, Fumito Shinohara, Hiroyuki Suzuki, Yuji Okamoto, Takashi Nobukawa
  • CONTROL DEVICE FOR CONTINUOUSLY VARIABLE TRANSMISSION
    Publication number: 20160223079
    Abstract: Disclosed is a control device for a continuously variable transmission (4) that has, as forward speed change stages, a first speed change stage (32) and a second speed change stage (33).
    Type: Application
    Filed: September 24, 2014
    Publication date: August 4, 2016
    Applicants: JATCO LTD, NISSAN MOTOR CO., LTD
    Inventors: Seiichiro TAKAHASHI, Takuichiro INOUE, Koutarou TAGAMI, Fumito SHINOHARA, Hiroyuki SUZUKI, Yuji OKAMOTO, Takashi NOBUKAWA
  • Control device and method for stepped transmission ensuring smooth transition in engine idle stop and resumption cycle
    Patent number: 8892323
    Abstract: A control device controls a transmission mechanism which includes a first clutch to be engaged at startup and a second clutch, and is interlocked when hydraulic pressure is supplied to the first and second clutches and when the first and second clutches are completely engaged. The control device includes a hydraulic pressure control unit controlling hydraulic pressure supplied to the transmission mechanism so that the first clutch is set in a completely engaged state and the second clutch is set in a slip interlock state where the second clutch is not completely engaged in the case of a return from an idle stop control in which an engine is automatically stopped. The hydraulic pressure control unit starts reducing hydraulic pressure supplied to the second clutch when an increased amount of an engine rotation speed per unit time becomes smaller than a predetermined value.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: November 18, 2014
    Assignees: Jatco Ltd, Nissan Motor Co., Ltd.
    Inventors: Hideshi Wakayama, Keichi Tatewaki, Hiroshi Sekiya, Koutarou Tagami, Seiichiro Takahashi, Yuzuru Tohta, Takashi Matsuda, Daisuke Matsumoto
  • CONTROL DEVICE AND CONTROL METHOD FOR TRANSMISSION MECHANISM
    Publication number: 20120298462
    Abstract: In the case of a return from an idle stop control in which an engine is automatically stopped, a hydraulic pressure is so supplied that a low brake is set in a completely engaged state and a high clutch is set in a slip interlock state where the high clutch is not completely engaged.
    Type: Application
    Filed: January 17, 2011
    Publication date: November 29, 2012
    Inventors: Hideshi Wakayama, Keichi Tatewaki, Hiroshi Sekiya, Koutarou Tagami, Seiichiro Takahashi, Yuzuru Tohta, Takashi Matsuda, Daisuke Matsumoto