Patents by Inventor Soichiro Ueura

Soichiro Ueura 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: 11440518
    Abstract: A vehicle braking system includes: a master cylinder; a slave cylinder communicated with the master cylinder; a vehicle behavior stabilizer communicated with the slave cylinder; first and second master cut valves, each being a normally closed valve for opening and closing a fluid flow path between the master cylinder and the slave cylinder, for making hydraulic pressures in the slave cylinder and the vehicle behavior stabilizer work in a valve closing direction; a pressure sensor for detecting the hydraulic pressure in the vehicle behavior stabilizer; and a piston controller for advancing first and second slave pistons in the slave cylinder when the hydraulic pressure on the vehicle behavior stabilizer side, detected by the pressure sensor, exceeds a predetermined value, and returning the pistons at a predetermined timing.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: September 13, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Soichiro Ueura
  • Publication number: 20220176924
    Abstract: A vehicle brake system including: a pressurizing motor that is connected to a brake pedal and configured to increase a braking force that is generated; and a processor. The processor is configured with a program to perform operations including: operation as an information acquisition part to obtain information on whether a shift position of an automatic transmission is in a non-driving mode and information on operation on the brake pedal; and operation as a braking force controller to perform, when a predetermined retention condition is met, control of braking force so that a stationary state of a host vehicle is maintained. When the predetermined retention condition is met and the shift position is in the non-driving mode, the braking force controller is configured to perform control to increase the braking force that is generated using the pressurizing motor once the brake pedal is in a non-operated state.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 9, 2022
    Inventors: Katsuya MATSUZAKI, Eisuke HORII, Katsuhito KANBE, Kei YAMANO, Soichiro UEURA, Tomohiro WATANABE
  • Publication number: 20210039635
    Abstract: An in-vehicle controlling apparatus, comprising an evaluation unit configured to evaluate a sense-of-security level a passenger may feel with respect to an object present in a traveling direction of a self-vehicle, and a signal generation unit configured to generate a predetermined signal based on the sense-of-security level, wherein the evaluation unit evaluates the sense-of-security level based on a time headway and a temporal variation component of the time headway.
    Type: Application
    Filed: August 3, 2020
    Publication date: February 11, 2021
    Inventors: Kazuya KOBAYASHI, Ken AMEMIYA, Soichiro UEURA
  • Publication number: 20200047729
    Abstract: A vehicle braking system includes: a master cylinder; a slave cylinder communicated with the master cylinder; a vehicle behavior stabilizer communicated with the slave cylinder; first and second master cut valves, each being a normally closed valve for opening and closing a fluid flow path between the master cylinder and the slave cylinder, for making hydraulic pressures in the slave cylinder and the vehicle behavior stabilizer work in a valve closing direction; a pressure sensor for detecting the hydraulic pressure in the vehicle behavior stabilizer; and a piston controller for advancing first and second slave pistons in the slave cylinder when the hydraulic pressure on the vehicle behavior stabilizer side, detected by the pressure sensor, exceeds a predetermined value, and returning the pistons at a predetermined timing.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    Inventor: Soichiro UEURA
  • Patent number: 9630605
    Abstract: An electric brake device includes: a motor cylinder device that generates a hydraulic pressure in accordance with a brake operation of a driver with an electric motor; a rotational angle sensor that detects a rotor rotational angle ? of the electric motor; and a motor control section that controls an output torque of the electric motor corresponding to the rotor rotational angle ? and controls the electric motor by advancing a detection value of the rotational angle sensor. The current phase setup section sets a current phase to an advanced side as an electrical advance control. The current phase setup section inhibits the advancing the detection value when the electric motor performs reversed rotation, or sets the current phase to a retarded side.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: April 25, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takashi Shimada, Kazuharu Kidera, Soichiro Ueura
  • Patent number: 9573578
    Abstract: There is provided a brake system for vehicles, the brake system including: a slave cylinder S/C to generate a hydraulic pressure by an electric motor according to a braking operation by a driver; and a controller to decrease an operation amount of the slave cylinder S/C when an operation amount of the electric motor is maintained, then increase an operation amount of the slave cylinder S/C when a change occurs in an operation amount of the electric motor subsequently. The controller determines whether or not the phase currents Iu, Iv, Iw of the electric motor are in two-phase continuously energized state and the state remains for a certain time or longer. When the determination conditions are satisfied, the controller performs commutation control to generate commutation in the electric motor by reducing a target hydraulic pressure of the slave cylinder S/C.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: February 21, 2017
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takashi Shimada, Soichiro Ueura, Kazuharu Kidera
  • Patent number: 9517758
    Abstract: The vehicle braking device includes a hydraulic pressure generating device generating a primary hydraulic pressure corresponding to the braking operation by a driver, a motor cylinder device operating to cause the secondary hydraulic pressure generated by operation of the electric motor to track the target hydraulic pressure based on the control operation quantity, a brake pedal sensor detecting the braking operation quantity, a primary hydraulic pressure sensor, an ECU performing switching control in accordance with whether the braking operation quantity detected by the brake pedal sensor reaches a predetermined threshold value, between operating the motor cylinder device on the basis of the braking operation quantity and operating the motor cylinder device on the basis of a correlation value of the braking operation force detected by the motor cylinder device 16 or the correlation value and the braking operation quantity.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: December 13, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takashi Shimada, Soichiro Ueura, Kazuharu Kidera
  • Patent number: 9499151
    Abstract: Provided is a brake system for a vehicle including an input side hydraulic system, an output side hydraulic system, a first and a second shutoff valves to shut off flowing of the brake fluid between the input side hydraulic system and the output side hydraulic system when closed, a first and a second out-valves through which the brake fluid flows into a reservoir unit when opened, and a control unit to control a motor cylinder device of the output side hydraulic system to generate the brake fluid pressure according to the operational amount of a brake pedal. The control unit opens one or both of the first and the second shutoff valves and the first and the second out-valves when output characteristic of the brake fluid pressure generated by the motor cylinder device shifts from basic characteristic.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: November 22, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takashi Shimada, Soichiro Ueura
  • Patent number: 9452741
    Abstract: A vehicle brake system includes a slave cylinder configured to drive an electric motor and generate a brake fluid pressure by moving pistons with a ball screw shaft; normally open type master cut valves that communicate/shut off between the slave cylinder and a master cylinder; and a control unit that controls the electric motor to close the master cut valves and limit a displacement of the ball screw shaft on the basis of a reference position during operation of a VSA device.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: September 27, 2016
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Kazuharu Kidera, Takashi Shimada, Soichiro Ueura
  • Patent number: 9403519
    Abstract: The object of the present invention is to provide a vehicle brake system capable of appropriately setting an upper limit value of hydraulic pressure of a by-wire brake during stopping of a vehicle in accordance with conditions. When the vehicle is stopped, a maximum allowable drive voltage calculation unit sets a maximum allowable drive voltage to V2, and sets a brake pressure generated by a motor to P2. When the vehicle is stopped, if a duration time of stopping of the vehicle or a duration time of generation of the brake pressure exceeds a reference value, the maximum allowable drive voltage calculation unit sets the maximum allowable drive voltage to V3, and sets the brake pressure generated by the motor to P3 which is lower than P2.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: August 2, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Takashi Shimada, Soichiro Ueura, Kazuharu Kidera
  • Patent number: 9333952
    Abstract: In a brake-by-wire brake system which includes a motor actuated cylinder configured to produce a brake fluid pressure according to an operating stroke thereof and an electric motor for actuating the motor actuated cylinder, the control mode is normally based on a fluid pressure control, but is switched to a stroke control when the brake pedal is released for the purpose of quickly reducing the operating stroke of the motor actuated cylinder to an initial value. To avoid a sudden increase in the noises of the electric motor at the time of switching from the fluid pressure control to the stroke control, a limit circuit limits electric current supplied to the electric motor when the control mode is switched from the fluid pressure control to the stroke control.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: May 10, 2016
    Assignee: Honda Motor Co., Ltd.
    Inventors: Soichiro Ueura, Kazuharu Kidera, Takashi Shimada
  • Publication number: 20160039401
    Abstract: Provided is a brake system for a vehicle including an input side hydraulic system, an output side hydraulic system, a first and a second shutoff valves to shut off flowing of the brake fluid between the input side hydraulic system and the output side hydraulic system when closed, a first and a second out-valves through which the brake fluid flows into a reservoir unit when opened, and a control unit to control a motor cylinder device of the output side hydraulic system to generate the brake fluid pressure according to the operational amount of a brake pedal. The control unit opens one or both of the first and the second shutoff valves and the first and the second out-valves when output characteristic of the brake fluid pressure generated by the motor cylinder device shifts from basic characteristic.
    Type: Application
    Filed: August 10, 2015
    Publication date: February 11, 2016
    Inventors: Takashi SHIMADA, Soichiro UEURA
  • Publication number: 20150115699
    Abstract: The vehicle braking device includes a hydraulic pressure generating device generating a primary hydraulic pressure corresponding to the braking operation by a driver, a motor cylinder device operating to cause the secondary hydraulic pressure generated by operation of the electric motor to track the target hydraulic pressure based on the control operation quantity, a brake pedal sensor detecting the braking operation quantity, a primary hydraulic pressure sensor, an ECU performing switching control in accordance with whether the braking operation quantity detected by the brake pedal sensor reaches a predetermined threshold value, between operating the motor cylinder device on the basis of the braking operation quantity and operating the motor cylinder device on the basis of a correlation value of the braking operation force detected by the motor cylinder device 16 or the correlation value and the braking operation quantity.
    Type: Application
    Filed: October 23, 2014
    Publication date: April 30, 2015
    Inventors: Takashi SHIMADA, Soichiro UEURA, Kazuharu KIDERA
  • Publication number: 20150097415
    Abstract: The object of the present invention is to provide a vehicle brake system capable of appropriately setting an upper limit value of hydraulic pressure of a by-wire brake during stopping of a vehicle in accordance with conditions. When the vehicle is stopped, a maximum allowable drive voltage calculation unit sets a maximum allowable drive voltage to V2, and sets a brake pressure generated by a motor to P2. When the vehicle is stopped, if a duration time of stopping of the vehicle or a duration time of generation of the brake pressure exceeds a reference value, the maximum allowable drive voltage calculation unit sets the maximum allowable drive voltage to V3, and sets the brake pressure generated by the motor to P3 which is lower than P2.
    Type: Application
    Filed: October 1, 2014
    Publication date: April 9, 2015
    Inventors: Takashi SHIMADA, Soichiro UEURA, Kazuharu KIDERA
  • Publication number: 20150097416
    Abstract: In a brake-by-wire brake system which includes a motor actuated cylinder configured to produce a brake fluid pressure according to an operating stroke thereof and an electric motor for actuating the motor actuated cylinder, the control mode is normally based on a fluid pressure control, but is switched to a stroke control when the brake pedal is released for the purpose of quickly reducing the operating stroke of the motor actuated cylinder to an initial value. To avoid a sudden increase in the noises of the electric motor at the time of switching from the fluid pressure control to the stroke control, a limit circuit limits electric current supplied to the electric motor when the control mode is switched from the fluid pressure control to the stroke control.
    Type: Application
    Filed: October 2, 2014
    Publication date: April 9, 2015
    Inventors: Soichiro UEURA, Kazuharu KIDERA, Takashi SHIMADA
  • Publication number: 20150061366
    Abstract: An electric brake device includes: a motor cylinder device that generates a hydraulic pressure in accordance with a brake operation of a driver with an electric motor; a rotational angle sensor that detects a rotor rotational angle ? of the electric motor; and a motor control section that controls an output torque of the electric motor corresponding to the rotor rotational angle ? and controls the electric motor by advancing a detection value of the rotational angle sensor. The current phase setup section sets a current phase to an advanced side as an electrical advance control. The current phase setup section inhibits the advancing the detection value when the electric motor performs reversed rotation, or sets the current phase to a retarded side.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takashi Shimada, Kazuharu Kidera, Soichiro Ueura
  • Publication number: 20150021981
    Abstract: There is provided a brake system for vehicles, the brake system including: a slave cylinder S/C to generate a hydraulic pressure by an electric motor according to a braking operation by a driver; and a controller to decrease an operation amount of the slave cylinder S/C when an operation amount of the electric motor is maintained, then increase an operation amount of the slave cylinder S/C when a change occurs in an operation amount of the electric motor subsequently. The controller determines whether or not the phase currents Iu, Iv, Iw of the electric motor are in two-phase continuously energized state and the state remains for a certain time or longer. When the determination conditions are satisfied, the controller performs commutation control to generate commutation in the electric motor by reducing a target hydraulic pressure of the slave cylinder S/C.
    Type: Application
    Filed: July 9, 2014
    Publication date: January 22, 2015
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Takashi Shimada, Soichiro Ueura, Kazuharu Kidera
  • Publication number: 20150008727
    Abstract: A vehicle brake system includes a slave cylinder configured to drive an electric motor and generate a brake fluid pressure by moving pistons with a ball screw shaft; normally open type master cut valves that communicate/shut off between the slave cylinder and a master cylinder; and a control unit that controls the electric motor to close the master cut valves and limit a displacement of the ball screw shaft on the basis of a reference position during operation of a VSA device.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 8, 2015
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kazuharu Kidera, Takashi Shimada, Soichiro Ueura