Patents by Inventor Shingo Eto

Shingo Eto 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: 10618512
    Abstract: System and methods are provided for improving fuel economy of a hybrid vehicle. A hybrid vehicle may include an EV driving mode, where the motor alone powers the hybrid vehicle. However, use of such a driving mode may be limited to conditions involving low drive force and power requests due to motor and battery power specifications. In some circumstances, the conditions during which the motor can be used to power the hybrid vehicle can be expanded. Such conditions may include instances where the driver only seeks light accelerations for a short period of time. Such an expanded EV mode may be triggered when the hybrid vehicle is travelling a downhill grade.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: April 14, 2020
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: Thomas S. Hawley, Shingo Eto
  • Patent number: 10507820
    Abstract: Systems and methods provide accurate determinations of relevant vehicle mass that can take into account any load being carried and/or towed by a vehicle, such as an electric vehicle or hybrid vehicle. Systems and methods also provide accurate road load measurements that can take into account road gradient(s) and the impact of gravity. Accordingly, the dynamic nature of relevant vehicle mass and road load can be captured. Efforts to optimize operation and/or take preemptive action to provide more efficient performance, enhance the drive experience, etc. can be better achieved through the more accurate determinations of relevant vehicle mass and road load achieved by these systems and methods.
    Type: Grant
    Filed: August 4, 2017
    Date of Patent: December 17, 2019
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: Thomas S. Hawley, Shingo Eto
  • Patent number: 10293692
    Abstract: A hybrid vehicle is provided. The hybrid vehicle includes an acceleration pedal, an engine configured to generate an engine torque based on a position of the acceleration pedal, an electronic control unit communicatively coupled to the engine and configured to calculate a target torque based on the position of the acceleration pedal, and estimate a motor-generated (MG)-assist torque based on difference between the target torque and the engine torque, a motor generator communicatively coupled to the electronic control unit and configured to generate the estimated MG-assist torque, and a power distribution unit configured to deliver the generated MG-assist torque combined with the engine torque to one or more wheels.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: May 21, 2019
    Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
    Inventors: Dae Keun Yoo, Hiroki Sato, Jordan Choby, Shingo Eto
  • Publication number: 20190039600
    Abstract: System and methods are provided for improving fuel economy of a hybrid vehicle. A hybrid vehicle may include an EV driving mode, where the motor alone powers the hybrid vehicle. However, use of such a driving mode may be limited to conditions involving low drive force and power requests due to motor and battery power specifications. In some circumstances, the conditions during which the motor can be used to power the hybrid vehicle can be expanded. Such conditions may include instances where the driver only seeks light accelerations for a short period of time. Such an expanded EV mode may be triggered when the hybrid vehicle is travelling a downhill grade.
    Type: Application
    Filed: August 4, 2017
    Publication date: February 7, 2019
    Inventors: Thomas S. Hawley, Shingo Eto
  • Publication number: 20190039595
    Abstract: Systems and methods provide accurate determinations of relevant vehicle mass that can take into account any load being carried and/or towed by a vehicle, such as an electric vehicle or hybrid vehicle. Systems and methods also provide accurate road load measurements that can take into account road gradient(s) and the impact of gravity. Accordingly, the dynamic nature of relevant vehicle mass and road load can be captured. Efforts to optimize operation and/or take preemptive action to provide more efficient performance, enhance the drive experience, etc. can be better achieved through the more accurate determinations of relevant vehicle mass and road load achieved by these systems and methods.
    Type: Application
    Filed: August 4, 2017
    Publication date: February 7, 2019
    Inventors: Thomas S. Hawley, Shingo Eto
  • Publication number: 20180105047
    Abstract: A hybrid vehicle is provided. The hybrid vehicle includes an acceleration pedal, an engine configured to generate an engine torque based on a position of the acceleration pedal, an electronic control unit communicatively coupled to the engine and configured to calculate a target torque based on the position of the acceleration pedal, and estimate a motor-generated (MG)-assist torque based on difference between the target torque and the engine torque, a motor generator communicatively coupled to the electronic control unit and configured to generate the estimated MG-assist torque, and a power distribution unit configured to deliver the generated MG-assist torque combined with the engine torque to one or more wheels.
    Type: Application
    Filed: October 17, 2016
    Publication date: April 19, 2018
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Dae Keun Yoo, Hiroki Sato, Jordan Choby, Shingo Eto
  • Patent number: 9902389
    Abstract: A vehicle drive control device performs acceleration/deceleration running by alternately repeating acceleration running and deceleration running, wherein it compares between an efficiency of the motor at a first operation point determined by a rotation speed and a torque of a motor and an efficiency of the motor at a second operation point for outputting a higher torque than the first operation point, and if a difference between the efficiencies is greater than a determination value, the acceleration running at the second operation point and the deceleration running being repeated, the second operation point being set a maximum efficiency line of the motor with the rotation speed and the torque of the motor as parameters to perform the acceleration running, and if acceleration during the acceleration running becomes larger than an acceleration limit value, a rotating machine acting at least as an electric generator generating electricity to charge a battery.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: February 27, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Terufumi Miyazaki, Yukihiko Ideshio, Toshihiko Kamiya, Shingo Eto, Hironori Asaoka, Yasuyuki Kato, Seigo Kanou, Makoto Iwanaka
  • Patent number: 9605605
    Abstract: Provided is a vehicle control apparatus. To start an engine by a motor-generator under the state that a vehicle is stopped, the vehicle control apparatus synchronizes a rotation of the engine with a rotation of the motor-generator at a synchronous rotational speed lower than a target rotational speed to start the engine, and increases a rotational speed of the engine by the motor-generator from the synchronous rotational to the target rotational speed, and starts the engine at the target rotational speed.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: March 28, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yukihiko Ideshio, Terufumi Miyazaki, Yuji Inoue, Shingo Eto, Yousuke Michikoshi
  • Patent number: 9550492
    Abstract: A control device of a vehicle includes an engine, an electric motor, and a first clutch connecting/disconnecting a power transmission path between the engine and the electric motor, and a second clutch configured to achieve a mechanically directly-coupled state of a power transmission path between the engine/the electric motor and drive wheels, the control device of a vehicle increasing a torque of the electric motor and causing the second clutch to slip-engage when the engine is started by controlling the first clutch toward engagement during motor running using only the electric motor as a drive force source for running with the first clutch released and the second clutch engaged, when the torque of the electric motor increased at the start of the engine relative to the torque of the electric motor during the motor running is larger, a slip amount of the second clutch being made larger as compared to when the torque is smaller.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: January 24, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yosuke Michikoshi, Shingo Eto, Yuji Inoue, Yukihiko Ideshio, Akihiro Sato
  • Patent number: 9533671
    Abstract: To provide a vehicle control apparatus which can suppress a shock in a clutch from being generated at a time of starting an engine by a motor in a vehicle having the clutch provided therein between the engine and the motor, thereby improving a drivability of the vehicle. Provided is a vehicle control apparatus, comprising: an engine, a motor generator connected to vehicle wheels of a vehicle, and a clutch that switches a transmission state between a disengaging state and an engaging state, in which the vehicle control apparatus switches the clutch in the engaging state to start the engine by the motor generator. When the engine is started by the motor generator, the vehicle control apparatus constantly keeps the compensation torque of the motor generator smaller than the clutch torque of the clutch.
    Type: Grant
    Filed: November 16, 2011
    Date of Patent: January 3, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji Inoue, Yukihiko Ideshio, Shingo Eto, Yousuke Michikoshi, Kenji Matsuo
  • Patent number: 9457667
    Abstract: A vehicle control device includes: an engine and a first motor generator from both of which a driving force for traveling is output to drive wheels; and an electricity storage device that storages electric power for driving the first motor generator. When a vehicle weight is in a reference state at a time of deceleration braking, the first motor generator is mainly caused, out of the first motor generator and the engine, to generate a braking force, and when the vehicle weight is greater than that in the reference state, the engine is mainly caused, out of the first motor generator and the engine, to generate the braking force. Thus, a sufficient braking force can be obtained while an input limit of the electricity storage device is prevented from being reached.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: October 4, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukihiko Ideshio, Terufumi Miyazaki, Yuji Inoue, Shingo Eto, Yousuke Michikoshi, Akihiro Sato
  • Patent number: 9440639
    Abstract: Disclosed is a control device for a vehicle including an engine and a motor generator both for supplying a travel driving force to a driving wheel. The control device causes the engine to stop while the vehicle is traveling on a descending slope under constant vehicle speed control where the vehicle is controlled to travel at a predetermined vehicle speed. That reduces a load on a brake device.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: September 13, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukihiko Ideshio, Terufumi Miyazaki, Yuji Inoue, Shingo Eto, Yousuke Michikoshi, Akihiro Sato
  • Patent number: 9371068
    Abstract: A control device of a vehicle including an engine, an electric motor, and a clutch configured to achieve a mechanically directly-coupled state of a power transmission path between the engine/the electric motor and drive wheels, the control device causing the clutch to be slip-engaged or released when the engine is started during motor running in which only the electric motor is used as a drive force source for running with the clutch engaged, the control device being configured such that when the clutch is engaged during the motor running, an engagement pressure is made lower than an engagement pressure when the clutch is engaged during engine running in which at least the engine is used as a drive force source for running, and in the case of running with the clutch engaged, the engagement pressure of the clutch is constantly adjusted based on output torque of the electric motor during the motor running, while the engagement pressure of the clutch is not adjusted during the engine running.
    Type: Grant
    Filed: February 16, 2012
    Date of Patent: June 21, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yosuke Michikoshi, Shingo Eto, Yuji Inoue, Yukihiko Ideshio, Akihiro Sato
  • Patent number: 9266530
    Abstract: A control device of a hybrid vehicle including an electric motor and an engine as drive force sources, the hybrid vehicle being configured to execute engine running using the engine as the drive force source for running and motor running using the electric motor as the drive force source for running with the engine stopped, the control device having a predefined running performance oriented running mode such as a sport running mode and a predefined large drive force running mode with a lower requirement degree of start acceleration performance as compared to the running performance oriented running mode, in the predefined running performance oriented running mode, the motor running being inhibited, the engine running being performed in an operation range in which the motor running is normally performed, and the engine being retained in an operating state at the time of vehicle stop, and in the predefined large drive force running mode, the motor running being inhibited, the engine running being performed in t
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: February 23, 2016
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukihiko Ideshio, Terufumi Miyazaki, Yuji Inoue, Shingo Eto, Yousuke Michikoshi, Akihiro Sato
  • Patent number: 9180873
    Abstract: It is provided a control device of a hybrid vehicle having an engine, an electric motor, a clutch disposed in a power transmission path between the engine and the electric motor, and a hydraulic power transmission device with a lockup clutch disposed in a power transmission path between the electric motor and drive wheels, the control device being configured to engage the clutch and provide slip control of the lockup clutch when the engine is started from motor running using the electric motor, and to lower an engagement pressure of the lockup clutch as compared to the case of an engine start caused by an acceleration request from a driver if the start of the engine is an engine start caused by a request from a hybrid system.
    Type: Grant
    Filed: February 23, 2011
    Date of Patent: November 10, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Terufumi Miyazaki, Yukihiko Ideshio, Toshihiko Kamiya, Shingo Eto, Hironori Asaoka
  • Patent number: 9169786
    Abstract: A control device of a vehicle engine comprises: an electric motor rotationally driving an engine to start the engine; a variable valve timing mechanism varying a valve timing of an intake valve of the engine; and an intermediate lock mechanism mechanically locking the valve timing at an intermediate position between a most delayed position and a most advanced position of the valve timing, if an output limitation of the electric motor is predicted at restart of the engine, the valve timing at the time of stop of the engine being locked at the intermediate lock position by the intermediate lock mechanism.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: October 27, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Terufumi Miyazaki, Yukihiko Ideshio, Toshihiko Kamiya, Shingo Eto, Hironori Asaoka, Yasuyuki Kato
  • Patent number: 9162676
    Abstract: A control device of a vehicle comprises: an electric motor connected to a drive force transmission path through a first connecting/disconnecting device connecting/interrupting power transmission; and an engine connected to the electric motor through a second connecting/disconnecting device connecting/interrupting power transmission, the control device of a vehicle disconnecting the first connecting/disconnecting device or the second connecting/disconnecting device during running to perform coasting with the engine separated, when performing coasting, a determination whether a vehicle speed is equal to or lower than a predetermined determination vehicle speed implemented, the engine separated by disconnecting the second connecting/disconnecting device with the first connecting/disconnecting device kept connected at a low vehicle speed where the vehicle speed is equal to or lower than the predetermined determination vehicle speed, and the engine separated by disconnecting the first connecting/disconnecting devi
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: October 20, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shingo Eto, Yuji Inoue, Yukihiko Ideshio, Yousuke Michikoshi, Terufumi Miyazaki, Akihiro Sato
  • Patent number: 9132834
    Abstract: To provide a driving system for a vehicle that can fulfill both drivability and regeneration efficiency. The driving system for the vehicle includes: an engine; a motor generator connected to a wheel; a clutch that changes transmission state between a disengagement state in which the engine is disengaged from the motor generator and an engagement state in which the engine is at least slightly engaged with the motor generator; and a one-way clutch capable of transmitting only power in a forward rotational direction from the engine to the motor generator, in which, when the power of the engine is transmitted to the motor generator, a first transmission method for transmitting the power through the one-way clutch with the clutch left disengaged and a second transmission method for transmitting the power through the clutch with the clutch engaged are changed in accordance with a vehicle state.
    Type: Grant
    Filed: October 27, 2011
    Date of Patent: September 15, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukihiko Ideshio, Terufumi Miyazaki, Yuji Inoue, Shingo Eto, Yousuke Michikoshi, Akihiro Sato
  • Patent number: 9127765
    Abstract: A control device of a vehicle drive device includes a mechanical oil pump, a hydraulic power transmission device transmitting power of the engine and the electric motor to drive wheels via an interposed engagement device when it is engaged. While the electric motor drives the mechanical oil pump while an operation of the engine is stopped, the control device executing neutral control of putting the engagement device into a slip state or released state to suppress power transmission between the hydraulic power transmission device and the drive wheels, the hydraulic power transmission device including a lockup clutch mechanically coupling input and output members of the hydraulic power transmission device when engaged, the lockup clutch being engaged during executing of the neutral control. Also, after it is determined that the engine is likely to be restarted after a stop of operation while the vehicle remains stopped, the lockup clutch being released.
    Type: Grant
    Filed: October 12, 2011
    Date of Patent: September 8, 2015
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shingo Eto, Nobufusa Kobayashi, Yukihiko Ideshio
  • Patent number: 9108635
    Abstract: It is provided a control device of a hybrid vehicle having a clutch in a power transmission path between an engine and a motor generator, the clutch controlling power transmission through the power transmission path depending on an engagement state, the hybrid vehicle interrupting the power transmission through the power transmission path by releasing the clutch during EV running while only the motor generator is used as a drive source for running, during the EV running while a release instruction for the clutch is output, if the engine being driven, a rotation speed of the engine is maintained within a predetermined rotation speed difference from a rotation speed of the motor generator.
    Type: Grant
    Filed: January 12, 2011
    Date of Patent: August 18, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Terufumi Miyazaki, Yukihiko Ideshio, Toshihiko Kamiya, Shingo Eto, Hironori Asaoka, Yasuyuki Kato