Patents by Inventor Atsuhiro Saeki

Atsuhiro Saeki 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: 10962105
    Abstract: A vehicle control device includes a control device that performs synchronization control of a synchronization mechanism on a vehicle, the vehicle including an input shaft, an intermediate shaft to which rotational power is transmitted, a shift gear that is synchronized with the intermediate shaft, and a synchronization mechanism that synchronizes the input side synchronization element with the output side synchronization element, and the control device includes a first synchronization mode in which the differential rotation is calculated on the basis of the rotational speed of the intermediate shaft, and a second synchronization mode in which the differential rotation is calculated on the basis of the rotational speed of the input shaft, and performs synchronization control in the first synchronization mode when performing the synchronization control, and performs the synchronization control in the second synchronization mode in a case in which the synchronization control does not proceed.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: March 30, 2021
    Assignee: Honda Motor Co., Ltd.
    Inventors: Atsuhiro Saeki, Takayuki Kishi, Mitsuhiro Araki
  • Publication number: 20200011413
    Abstract: A vehicle control device includes a control device that performs synchronization control of a synchronization mechanism on a vehicle, the vehicle including an input shaft, an intermediate shaft to which rotational power is transmitted, a shift gear that is synchronized with the intermediate shaft, and a synchronization mechanism that synchronizes the input side synchronization element with the output side synchronization element, and the control device includes a first synchronization mode in which the differential rotation is calculated on the basis of the rotational speed of the intermediate shaft, and a second synchronization mode in which the differential rotation is calculated on the basis of the rotational speed of the input shaft, and performs synchronization control in the first synchronization mode when performing the synchronization control, and performs the synchronization control in the second synchronization mode in a case in which the synchronization control does not proceed.
    Type: Application
    Filed: July 3, 2019
    Publication date: January 9, 2020
    Applicant: Honda Motor Co.,Ltd.
    Inventors: Atsuhiro SAEKI, Takayuki KISHI, Mitsuhiro ARAKI
  • Patent number: 9453575
    Abstract: A control device of a twin-clutch transmission includes a gear operation mechanism driven by a single actuator mechanism . The gear operation mechanism performs a selection operation to select a synchromesh unit to operate from a plurality of synchromesh units and a shift operation to drive the selected synchromesh unit to an engagement position (in-gear position) corresponding to a shift position. In the control device, based on a deceleration rate of a vehicle, a determination is made to allow or disallow continuation of the shift operation at a change of a shift position to a target shift position. When a determination is made to disallow continuation of the shift operation, only the selection operation is performed, and the shift operation is prohibited. When a determination is made to allow continuation of the shift operation, the shift operation is allowed.
    Type: Grant
    Filed: December 24, 2014
    Date of Patent: September 27, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masashi Eto, Shohei Taka, Atsuhiro Saeki
  • Publication number: 20150184743
    Abstract: A control device of a twin-clutch transmission includes a gear operation mechanism driven by a single actuator mechanism . The gear operation mechanism performs a selection operation to select a synchromesh unit to operate from a plurality of synchromesh units and a shift operation to drive the selected synchromesh unit to an engagement position (in-gear position) corresponding to a shift position. In the control device, based on a deceleration rate of a vehicle, a determination is made to allow or disallow continuation of the shift operation at a change of a shift position to a target shift position. When a determination is made to disallow continuation of the shift operation, only the selection operation is performed, and the shift operation is prohibited. When a determination is made to allow continuation of the shift operation, the shift operation is allowed.
    Type: Application
    Filed: December 24, 2014
    Publication date: July 2, 2015
    Inventors: Masashi ETO, Shohei TAKA, Atsuhiro SAEKI
  • Patent number: 8930099
    Abstract: In a control apparatus for an automatic transmission, it is configured to calculate a change amount (?NC estimation value) of an output rotational speed of the transmission (S10); calculate an average (I phase initial average G) of the change amount of the output rotational speed over a predetermined period of an initial inertia (I) phase of shifting; calculate an average (after-shift average G) of a vehicle acceleration after the completion of the shifting, assuming that the change amount of the output rotational speed indicates the vehicle acceleration G; calculate a difference (I phase initial G) between the average of the change amount of the output rotational speed and the average of the vehicle acceleration; incrementally and decrementally correct the desired value of the transmission torque of the frictional engaging element such that the calculated difference falls within a predetermined range; and control supply of hydraulic pressure to the frictional engaging element such that it becomes the correct
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: January 6, 2015
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yasushi Inagawa, Shintaro Kameda, Atsuhiro Saeki, Takahiro Matsuda, Hidekazu Araki, Hiroyuki Okuda, Yuji Yasui
  • Publication number: 20120232764
    Abstract: In a control apparatus for an automatic transmission, it is configured to calculate a change amount (?NC estimation value) of an output rotational speed of the transmission (S10); calculate an average (I phase initial average G) of the change amount of the output rotational speed over a predetermined period of an initial inertia (I) phase of shifting; calculate an average (after-shift average G) of a vehicle acceleration after the completion of the shifting, assuming that the change amount of the output rotational speed indicates the vehicle acceleration G; calculate a difference (I phase initial G) between the average of the change amount of the output rotational speed and the average of the vehicle acceleration; incrementally and decrementally correct the desired value of the transmission torque of the frictional engaging element such that the calculated difference falls within a predetermined range; and control supply of hydraulic pressure to the frictional engaging element such that it becomes the correct
    Type: Application
    Filed: November 19, 2010
    Publication date: September 13, 2012
    Applicant: Honda Motor Co., Ltd.
    Inventors: Yasushi Inagawa, Shintaro Kameda, Atsuhiro Saeki, Takahiro Matsuda, Hidekazu Araki, Hiroyuki Okuda, Yuji Yasui