Patents by Inventor Akihiro KIKKAWA

Akihiro KIKKAWA 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: 10400886
    Abstract: A speed change ECU for a CVT sets a target input rotational speed Nin* such that the speed ratio of the CVT is varied stepwise a plurality of times consecutively to the downshift side in response to an operation to depress a brake pedal by a driver, and sets the target input rotational speed Nin* such that an amount of increase S(1), S(2), . . . in input rotational speed along with a downshift becomes smaller as the number of times of execution of downshifts is increased while downshifts in which the speed ratio is varied stepwise are executed consecutively.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: September 3, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Masachika Kato, Akihiro Kikkawa, Kiyoshi Kurita
  • Patent number: 10400885
    Abstract: A speed change ECU for a CVT sets a target input rotational speed (Nin*) such that the speed ratio of the CVT is varied stepwise a plurality of times consecutively to the downshift side in response to an operation to depress a brake pedal by a driver, and sets the target input rotational speed (Nin*) such that the time interval between consecutive downshifts becomes longer as the number of times of execution of downshifts is increased on the basis of intershifting times (tint(1)), (tint(2)), . . . while downshifts in which the speed ratio is varied stepwise are executed consecutively.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: September 3, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Masachika Kato, Akihiro Kikkawa, Kiyoshi Kurita
  • Patent number: 10190683
    Abstract: A control device for a continuously variable transmission that steplessly changes a speed ratio of the continuously variable transmission mounted on a vehicle, the control device including a controller that changes the speed ratio such that a stepwise upshift is performed, wherein in the case where an accelerator depression amount is constant, the controller increases a number of allowable stepwise upshifts as the accelerator depression amount is larger.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: January 29, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Akihiro Kikkawa, Masaki Ueda, Masachika Kato, Kiyoshi Kurita, Hiroshi Tsutsui
  • Patent number: 10077837
    Abstract: A control device for a continuously variable transmission, which sets a target input rotational speed, or a target value of an input rotational speed of the continuously variable transmission mounted on a vehicle, such that a speed ratio is changed in a stepped manner and which controls the continuously variable transmission such that the input rotational speed becomes equal to the target input rotational speed.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: September 18, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Akihiro Kikkawa, Masaki Ueda, Masachika Kato
  • Patent number: 9995388
    Abstract: A control device for a continuously variable transmission, which sets a target input rotational speed, or a target value of an input rotational speed of the continuously variable transmission mounted on a vehicle, such that a speed ratio is changed in a stepped manner and which controls the continuously variable transmission such that the input rotational speed becomes equal to the target input rotational speed.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: June 12, 2018
    Assignee: AISIN AW CO., LTD.
    Inventors: Akihiro Kikkawa, Masaki Ueda, Masachika Kato
  • Publication number: 20180045301
    Abstract: A speed change ECU for a CVT sets a target input rotational speed Nin* such that the speed ratio of the CVT is varied stepwise a plurality of times consecutively to the downshift side in response to an operation to depress a brake pedal by a driver, and sets the target input rotational speed Nin* such that an amount of increase S(1), S(2), . . . in input rotational speed along with a downshift becomes smaller as the number of times of execution of downshifts is increased while downshifts in which the speed ratio is varied stepwise are executed consecutively.
    Type: Application
    Filed: March 14, 2016
    Publication date: February 15, 2018
    Applicant: AISIN AW CO., LTD.
    Inventors: Masachika KATO, Akihiro KIKKAWA, Kiyoshi KURITA
  • Publication number: 20180017156
    Abstract: A speed change ECU for a CVT sets a target input rotational speed (Nin*) such that the speed ratio of the CVT is varied stepwise a plurality of times consecutively to the downshift side in response to an operation to depress a brake pedal by a driver, and sets the target input rotational speed (Nin*) such that the time interval between consecutive downshifts becomes longer as the number of times of execution of downshifts is increased on the basis of intershifting times (tint(1)), (tint(2)), . . . while downshifts in which the speed ratio is varied stepwise are executed consecutively.
    Type: Application
    Filed: March 15, 2016
    Publication date: January 18, 2018
    Applicant: AISIN AW CO., LTD.
    Inventors: Masachika KATO, Akihiro KIKKAWA, Kiyoshi KURITA
  • Publication number: 20170146119
    Abstract: A control device for a continuously variable transmission, which sets a target input rotational speed, or a target value of an input rotational speed of the continuously variable transmission mounted on a vehicle, such that a speed ratio is changed in a stepped manner and which controls the continuously variable transmission such that the input rotational speed becomes equal to the target input rotational speed.
    Type: Application
    Filed: September 25, 2014
    Publication date: May 25, 2017
    Applicant: AISIN AW CO., LTD.
    Inventors: Akihiro KIKKAWA, Masaki UEDA, Masachika KATO
  • Publication number: 20170130833
    Abstract: A control device for a continuously variable transmission, which sets a target input rotational speed, or a target value of an input rotational speed of the continuously variable transmission mounted on a vehicle, such that a speed ratio is changed in a stepped manner and which controls the continuously variable transmission such that the input rotational speed becomes equal to the target input rotational speed.
    Type: Application
    Filed: September 25, 2014
    Publication date: May 11, 2017
    Applicant: AISIN AW CO., LTD.
    Inventors: Akihiro KIKKAWA, Masaki UEDA, Masachika KATO
  • Publication number: 20160363068
    Abstract: There is provided a control device for an automatic transmission capable of outputting a torque reduction signal for reducing the driving torque of a driving source during a transmission shift, in which, when a shift signal for an upshift is input with an accelerator opening equal to or more than a threshold and a transmission shift is performed, the torque reduction signal for reducing the driving torque of the driving source is output so that an inertial torque acting on an input shaft of a continuously variable transmission mechanism is canceled while a transmission shift ratio is changed and, before the transmission shift ends, a vehicle driving force is reduced to a vehicle driving force after the transmission shift.
    Type: Application
    Filed: March 19, 2015
    Publication date: December 15, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Masahiro NOZAKI, Akihiro KIKKAWA, Kiyoshi KURITA, Hiroshi TSUTSUI
  • Publication number: 20160201798
    Abstract: A control device for a continuously variable transmission that steplessly changes a speed ratio of the continuously variable transmission mounted on a vehicle, the control device including a controller that changes the speed ratio such that a stepwise upshift is performed, wherein in the case where an accelerator depression amount is constant, the controller increases a number of allowable stepwise upshifts as the accelerator depression amount is larger.
    Type: Application
    Filed: September 25, 2014
    Publication date: July 14, 2016
    Applicant: AISIN AW CO., LTD.
    Inventors: Akihiro KIKKAWA, Masaki UEDA, Masachika KATO, Kiyoshi KURITA, Hiroshi TSUTSUI