Patents by Inventor Hideaki Otsubo

Hideaki Otsubo 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: 11440418
    Abstract: A control system for an electric vehicle configured to allow a driver to grasp the situation of the electric vehicle when launching the electric vehicle by operating a brake pedal, and to reduce electric consumption of a motor. A controller controls the motor to generate a signal torque when a brake pedal depressed to generate brake force is returned so as to allow the driver to sense a change in a behavior of the vehicle, and terminate generation of the signal torque by the motor before the brake force is reduced to zero.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: September 13, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Otsubo, Daijiro Kawasaki
  • Publication number: 20210387523
    Abstract: A reaction force control system for a pedal that is configured to stably operate a vehicle in which an operating mode can be shifted between normal and one-pedal modes, without requiring a complicated operation, and without disturbing a driver. An operating mode is selected from a one-pedal mode in which a drive force and a brake force are controlled by manipulating an accelerator pedal, and a normal mode in which drive force is controlled by manipulating the accelerator pedal, and the brake force is controlled by manipulating the brake pedal. Reaction force applied to the accelerator pedal is increased for a predetermined period of time when shifting from one of the operating modes to the other one, and thereafter the reaction force is adjusted in accordance with a position of the accelerator pedal in the other one of the operating modes.
    Type: Application
    Filed: November 29, 2019
    Publication date: December 16, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuntaro SHINOHARA, Hideaki OTSUBO, Hiromitsu METSUGI, Yoichiro ISAMI, Hiroyasu KITAGAWA, Takuya HIRATA
  • Publication number: 20200324753
    Abstract: A control system for vehicles that controls drive force and acceleration smoothly without causing a shock, in response to an operation of an accelerator pedal. A hysteresis is set between an input value and an output value of angle of the accelerator pedal. The hysteresis includes a deadband and an asymptotic range. The output value is not changed significantly with respect to a change in the input value if an angle of the accelerator pedal is changed within the deadband, and the output value is changed continuously with respect to a change in the input value based on a predetermined function if an angle of the accelerator pedal is changed within the asymptotic range.
    Type: Application
    Filed: March 17, 2020
    Publication date: October 15, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shuntaro SHINOHARA, Hiroyasu KITAGAWA, Hideaki OTSUBO, Koichiro MUTA, Yoshinori FUJITAKE, Takuya HIRATA, Hiromitsu METSUGI
  • Publication number: 20200309042
    Abstract: A driving force control apparatus for a vehicle includes an operation amount detection unit; a vehicle speed detection unit; and an electronic control unit. The electronic control unit is configured to determine, when a vehicle speed is lower than a predetermined vehicle speed, a target driving force in a case where an operation amount of an accelerator pedal is in a predetermined range, based on a first provisional target driving force; and determine, when the vehicle speed is equal to or higher than the predetermined vehicle speed, the target driving force in the case where the operation amount of the accelerator pedal is in the predetermined range, based on a second provisional target driving force.
    Type: Application
    Filed: March 20, 2020
    Publication date: October 1, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Otsubo, Kuninori Kumagai, Hiromitsu Metsugi, Daijiro Kawasaki
  • Publication number: 20200292062
    Abstract: In a control device of an electric vehicle including a motor, driving wheels, a shifting device that is operated by a driver and selectively sets one of two shift positions of a traveling position that generates driving force by transmitting output torque of the motor to the driving wheels, and a non-traveling position that does not generate driving force without transmitting the output torque to the driving wheels, a controller causes the motor to output signal torque that enables the driver to sense a change in a vehicle behavior accompanied with switching of the shift position when the driver switches the shift position.
    Type: Application
    Filed: January 30, 2020
    Publication date: September 17, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Daijiro KAWASAKI, Satoshi YAMANAKA, Hideaki OTSUBO
  • Publication number: 20200269703
    Abstract: A control system for an electric vehicle configured to allow a driver to grasp the situation of the electric vehicle when launching the electric vehicle by operating a brake pedal, and to reduce electric consumption of a motor. A controller controls the motor to generate a signal torque when a brake pedal depressed to generate brake force is returned so as to allow the driver to sense a change in a behavior of the vehicle, and terminate generation of the signal torque by the motor before the brake force is reduced to zero.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 27, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki OTSUBO, Daijiro KAWASAKI
  • Publication number: 20200171943
    Abstract: A reaction force control system configured to alleviate traffic congestion without providing discomfort to a driver. The reaction force control system comprises a reaction force generating mechanism generating a reaction force against a pedal force, and a controller that controls the reaction force generating mechanism. The controller is configured to: obtain a current reaction force and calculate a target reaction force when the vehicle travels within a speed management zone; reduce the reaction force when the current reaction force is greater than the target reaction force; and increase the reaction force when the current reaction force is less than the target reaction force.
    Type: Application
    Filed: November 8, 2019
    Publication date: June 4, 2020
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hideaki OTSUBO
  • Patent number: 10584791
    Abstract: A speed change control system configured to allow a driver to promptly sense a response to an accelerating operation. A reference index value that the driver senses an acceleration response is calculated based on acceleration of a vehicle. If the reference index value is smaller than a first reference index value at which the driver is allowed to sense the acceleration response, a downshift point is lowered to a first drive force.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: March 10, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akira Takeichi, Ayumu Sagawa, Hiroyasu Kitagawa, Hideaki Otsubo
  • Publication number: 20180252310
    Abstract: A speed change control system configured to allow a driver to promptly sense a response to an accelerating operation. A reference index value that the driver senses an acceleration response is calculated based on acceleration of a vehicle. If the reference index value is smaller than a first reference index value at which the driver is allowed to sense the acceleration response, a downshift point is lowered to a first drive force.
    Type: Application
    Filed: February 27, 2018
    Publication date: September 6, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akira TAKEICHI, Ayumu SAGAWA, Hiroyasu KITAGAWA, Hideaki OTSUBO
  • Patent number: 10066739
    Abstract: Every time a specified time ?T elapses, this shift control device calculates a target drive force Fd (a step S5), calculates a absolute value AF of a difference between an optimum fuel consumption rate Fopt [Fd] for the target drive force Fd and a fuel consumption rate FN [Fd] for the target drive force Fd in each of the gear stages N (a step S8), determines candidate gear stages Nc from the gear stages N (as step S13), and integrates the absolute value AF that is calculated for each of the candidate gear stages Nc in a period from last shift to the present time to determine the candidate gear stage Nc for which an integrated value J is the smallest as a target gear stage Nm (a step S15).
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: September 4, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takaaki Tokura, Hideaki Otsubo
  • Patent number: 9440634
    Abstract: A control device for a vehicle includes a control unit configured to: implement a first travelling mode of engaging a power connecting/disconnecting device at a time an accelerator opening is greater than a fully closed state and not greater than a first opening; implement a second travelling mode of releasing the power connecting/disconnecting device at a time the accelerator opening is greater than the first opening and smaller than a second opening; implement a third travelling mode of stopping a fuel supply to an engine with the power connecting/disconnecting device engaged at a time the accelerator opening is fully closed; and control an output of the engine so that a vehicle deceleration at a time of implementing the first travelling mode gradually changes.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: September 13, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinji Kato, Satoshi Yamanaka, Hideaki Otsubo
  • Publication number: 20160047464
    Abstract: Every time a specified time AT elapses, this shift control device calculates a target drive force Fd (a step S5), calculates a absolute value AF of a difference between an optimum fuel consumption rate Fopt [Fd] for the target drive force Fd and a fuel consumption rate FN [Fd] for the target drive force Fd in each of the gear stages N (a step S8), determines candidate gear stages Nc from the gear stages N (as step S13), and integrates the absolute value AF that is calculated for each of the candidate gear stages Nc in a period from last shift to the present time to determine the candidate gear stage Nc for which an integrated value J is the smallest as a target gear stage Nm (a step S15).
    Type: Application
    Filed: March 28, 2014
    Publication date: February 18, 2016
    Inventors: Takaaki TOKURA, Hideaki OTSUBO
  • Publication number: 20150353091
    Abstract: A control device for a vehicle includes a control unit configured to: implement a first travelling mode of engaging a power connecting/disconnecting device at a time an accelerator opening is greater than a fully closed state and not greater than a first opening; implement a second travelling mode of releasing the power connecting/disconnecting device at a time the accelerator opening is greater than the first opening and smaller than a second opening; implement a third travelling mode of stopping a fuel supply to an engine with the power connecting/disconnecting device engaged at a time the accelerator opening is fully closed; and control an output of the engine so that a vehicle deceleration at a time of implementing the first travelling mode gradually changes.
    Type: Application
    Filed: May 26, 2015
    Publication date: December 10, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinji KATO, Satoshi Yamanaka, Hideaki Otsubo
  • Publication number: 20150353086
    Abstract: A control device for a vehicle includes a control unit. The control unit has a first traveling mode in which a power connection and disconnection device is engaged during traveling, a second traveling mode in which the power connection and disconnection device is released during traveling, and a third traveling mode. The control unit executes the second traveling mode when i) the vehicle speed is equal to or higher than the lower limit vehicle speed and equal to or lower than an upper limit vehicle speed, ii) an accelerator depressing amount is greater than a first depressing amount and smaller than a second depressing amount, and iii) an accelerator depressing amount variation is zero, or the control unit determines that a traveling condition is deceleration traveling based on the accelerator depressing amount variation.
    Type: Application
    Filed: June 9, 2015
    Publication date: December 10, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinji KATO, Satoshi YAMANAKA, Hideaki OTSUBO
  • Patent number: 8996265
    Abstract: A control device of a hybrid vehicle includes an engine and an electric motor, a clutch, and an automatic transmission. The motor is the only drive power source when the clutch is released. The control device is configured such that when a request for increasing drive torque while the motor is running is made, if start control of the engine and downshift control of the automatic transmission overlap, clutch engagement completion is a starting point to start a rotational change of an input rotation speed of the transmission toward a synchronous rotation speed after a shift, and a transmission torque capacity during the downshift control in the transmission until engagement completion of the clutch being set equal to or greater than an input torque of the transmission during the motor running and less than an input torque of the transmission at the time of engagement completion of the clutch.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: March 31, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Nobufusa Kobayashi, Hideaki Otsubo
  • Patent number: 8951163
    Abstract: Provided is a control device for a vehicle that can switch between an automatic gear shift mode in which gear shifting of the automatic transmission is performed according to a vehicle traveling condition, and a manual gear shift mode in which gear shifting of the automatic transmission is performed according to a driver operation, and that changes drive force characteristics by controlling output torque of the drive source at the time of a gear shift mode switch. When the gear shift mode is switched between automatic and manual the control device selects an initial gear stage or an initial gear ratio for the gear shift mode switch such that the amount of change in drive force that accompanies the gear shift mode switch decreases, or such that the direction of change in drive force that accompanies the gear shift mode switch conforms to the driver's intention or expected sensation.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: February 10, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideaki Otsubo, Masayuki Baba, Takaaki Tokura
  • Patent number: 8930101
    Abstract: A control apparatus for a hybrid vehicle provided with an electrically operated continuously-variable transmitting portion and a step-variable transmitting portion, which control apparatus permits an adequate control of a shifting action of the step-variable transmitting portion, while reducing deterioration of fuel economy of the hybrid vehicle.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: January 6, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideaki Otsubo, Naoki Ishikawa, Hideharu Nohara
  • Patent number: 8909407
    Abstract: A control device of a hybrid vehicle has an electric shift mechanism including a differential mechanism having a first rotating element coupled to an engine in a power transmittable manner, a second rotating element coupled to a differential electric motor in a power transmittable manner, and a third rotating element that is an output rotating member coupled to an electric motor for running in a power transmittable manner, and a mechanical shift mechanism, and makes a differential torque smaller between an output torque of the engine and an engagement torque of the engagement devices involved in a shift of the mechanical shift mechanism on the same shaft in a case of a shift with a smaller rotation speed change in the engine as compared to a case of a shift with a larger rotation speed change in the engine in the same type of shift in the mechanical shift mechanism.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: December 9, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideaki Otsubo, Naoki Ishikawa, Hideharu Nohara
  • Publication number: 20140148987
    Abstract: A control device of a hybrid vehicle has an electric shift mechanism including a differential mechanism having a first rotating element coupled to an engine in a power transmittable manner, a second rotating element coupled to a differential electric motor in a power transmittable manner, and a third rotating element that is an output rotating member coupled to an electric motor for running in a power transmittable manner, and a mechanical shift mechanism, and makes a differential torque smaller between an output torque of the engine and an engagement torque of the engagement devices involved in a shift of the mechanical shift mechanism on the same shaft in a case of a shift with a smaller rotation speed change in the engine as compared to a case of a shift with a larger rotation speed change in the engine in the same type of shift in the mechanical shift mechanism.
    Type: Application
    Filed: May 16, 2011
    Publication date: May 29, 2014
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideaki Otsubo, Naoki Ishikawa, Hideharu Nohara
  • Patent number: 8725367
    Abstract: In a control apparatus and a control method for a vehicle automatic transmission in which a plurality of gears with different speed ratios are achieved by selectively engaging a plurality of friction engagement devices and a one-way clutch, if an acceleration request is made in the case where the one-way clutch is in an idling state when a first predetermined gear is to be achieved by engaging the one-way clutch, a pre-synchronization control is executed to transmit torque through a predetermined friction engagement device used to achieve a second predetermined gear at which the one-way clutch is maintained in an idling state, and to continue to change a rotational direction of the one-way clutch toward a rotational direction in which the one-way clutch is brought to a synchronized state, according to the acceleration request.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: May 13, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takaaki Tokura, Hideaki Otsubo, Motonori Kimura