Patents by Inventor Keisuke Morisaki

Keisuke Morisaki 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).

  • Publication number: 20180148059
    Abstract: In a hybrid vehicle including an engine, an electric motor configured to give braking force to the vehicle, a battery configured to exchange electric power with the electric motor, a hydraulic brake configured to give braking force to the vehicle, and an electronic control unit configured to execute regeneration cooperative control such that braking force is given from the engine, the electric motor, and the hydraulic brake to the vehicle based on a driver's brake-on operation, when an open end voltage of the battery is equal to or greater than a first predetermined voltage, the regeneration cooperative control is limited.
    Type: Application
    Filed: November 2, 2017
    Publication date: May 31, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke MORISAKI
  • Patent number: 9896085
    Abstract: In the first mode, the vehicle gives priority to traveling in which only the motor is driven. In the second mode, the vehicle drives at least one of the internal combustion engine and the motor to sustain a stored power amount of the storage battery. At least one of a plurality of zones includes a load unknown portion, in which the travel load cannot be calculated. The planning unit is configured to set a zone including the load unknown portion to the first mode.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: February 20, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke Morisaki
  • Patent number: 9884568
    Abstract: A control apparatus for a vehicle including a three-phase AC motor and a power converter, the control apparatus includes an ECU. The ECU is configured to determine whether a rotation speed of the three-phase AC motor is equal to or less than a predetermined threshold and whether a stopping operation of the vehicle is performed, to determine that the vehicle stops when the rotation speed is equal to or less than the predetermined threshold and the stopping operation is performed, to determine whether the vehicle skids, and to switch a state of the power converter to a state where all on one side of the first and second switching elements are turned off and at least one on the other side of the first and second switching elements is turned on when the ECU determines that the vehicle stops and that the vehicle does not skid.
    Type: Grant
    Filed: October 15, 2014
    Date of Patent: February 6, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshitaka Niimi, Wanleng Ang, Masaki Okamura, Shintaro Tsujii, Keisuke Morisaki, Hideaki Yaguchi
  • Patent number: 9862279
    Abstract: A vehicle consumes electric power of a battery when traveling in a first mode and sustains a storage power amount of the battery when traveling in a second mode. The travel planning unit forms a travel plan that assigns one of the first mode and the second mode to each zone included in a route. A control unit sets a travel mode of the vehicle to the first mode when the vehicle deviates from the route that is in accordance with the formed travel plan.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: January 9, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke Morisaki
  • Patent number: 9849870
    Abstract: This hybrid vehicle (10) has an HV mode and an EV mode, creates a predetermined traveling plan in a manner so as to switch between HV mode and EV mode on the basis of map information, and performs mode switching control on the basis of the traveling plan. The hybrid vehicle (10) limits the execution of mode switching control that is on the basis of the traveling plan in the case of a predetermined state such that the power that can be output by a battery (28) that is the storage battery connected to a second MG (24) that is a rotary electric machine driven during execution of the EV mode is limited.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: December 26, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Keisuke Morisaki
  • Publication number: 20170361837
    Abstract: An electronic control unit of a hybrid vehicle is configured to determine whether or not parking operation of the hybrid vehicle is being performed. The electronic control unit is configured to control the engine and the rotary electric machine such that starting the engine when the parking operation of the hybrid vehicle is being performed is harder than starting the engine when the parking operation of the hybrid vehicle is not being performed.
    Type: Application
    Filed: June 16, 2017
    Publication date: December 21, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke MORISAKI
  • Publication number: 20170355358
    Abstract: A control device for a hybrid vehicle carries out, when a vehicle travels in a downhill control section or a congestion control section, pre-charge/discharge control of changing a target state of charge (SOC) SOCcntr from a standard SOC SOCcntr-n to a specific SOC, and is within a permissible range, in a period in which the vehicle travels from a control start point (Ds) to at least a start point (Dk) of a subject downhill section or a subject congested section. Further, the control device is configured to inhibit, when return control is carried out while the pre-charge/discharge control is being carried out, the pre-charge/discharge control from a start time point (D5) of the return control to a time point (D9) at which the vehicle has passed through the control section. As a result, fuel efficiency can be improved when the return control is carried out during the pre-charge/discharge control.
    Type: Application
    Filed: May 2, 2017
    Publication date: December 14, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuki OGAWA, Keisuke MORISAKI
  • Patent number: 9834196
    Abstract: In the first mode, a controller circuitry restrains or prohibits operation of an internal combustion engine. In the second mode, the controller circuitry activates maintains the charge amount of the battery. A controller circuitry generates a travel plan assigns one of the first mode and the second mode to each of sections, which are included in the travel route. An assessing circuitry assesses a tendency of assignment of the first mode in the travel route. A notifying device notifies information corresponding to the tendency assessed by the assessing circuitry.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: December 5, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke Morisaki
  • Patent number: 9821792
    Abstract: An ECU changes driving force characteristics in accordance with a changeover in mode, such that the vehicle driving torque for the same vehicle speed and the same accelerator opening degree becomes larger during a CD mode than during a CS mode. In changing the driving force characteristics in accordance with the changeover in mode, the ECU executes a slow change process such that the vehicle driving torque approaches a value after the changeover in mode from a value before the changeover in mode as time passes. In this slow change process, the speed of change in the vehicle driving torque in the slow change process is more strictly limited when the changeover in mode is made based on host vehicle position information than when the changeover in mode is made in accordance with the operation of a mode switch.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: November 21, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Keisuke Morisaki
  • Publication number: 20170282895
    Abstract: An electronic control unit executes navigation-cooperative SOC control in which traveling situations on a traveling route found through a search performed by a navigation system are predicted and a state-of-charge is controlled by adjusting an output of an engine based on the predicted traveling situations to control charging-discharging of an electricity storage device. The ECU does not execute the navigation-cooperative SOC control when a temperature of the electricity storage device falls below a prescribed temperature and thus charging-discharging of the electricity storage device is limited.
    Type: Application
    Filed: March 27, 2017
    Publication date: October 5, 2017
    Inventor: Keisuke Morisaki
  • Patent number: 9751524
    Abstract: When a starting point water temperature Twst is equal to or lower than a threshold value Twref1, catalyst warm-up control is executed, and when a cooling water temperature Tw becomes higher than the threshold value Twref1 or an operation time top of an engine becomes equal to or higher than a threshold value topref1, the control of the engine is shifted from the catalyst warm-up control to normal control. When the starting point water temperature Twst is higher than the threshold value Twref1 and is equal to or lower than a threshold value Twref2, PN suppression control is executed, and when the cooling water temperature Tw of the engine becomes higher than the threshold value Twref2 or the operation time top of the engine becomes equal to or higher than a threshold value topref2, the control of the engine is shifted from the PN suppression control to the normal control.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: September 5, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Keisuke Morisaki, Takahiro Nishigaki, Daigo Ando, Yuichiro Kawai
  • Patent number: 9643589
    Abstract: A vehicle in a first mode consumes a charge amount of a battery. The vehicle in a second mode maintains the charge amount of the battery. An obtaining circuitry obtains, as a first distance, a total distance for which the vehicle has traveled in the first mode. When the vehicle is assumed to have traveled with the first mode preferentially assigned to the travel route separately from the travel plan, an estimating circuitry estimates, as a second distance, a total distance for which the vehicle would have traveled in the first mode. A notifying circuitry notifies the first distance information and the second distance information.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: May 9, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Koji Hokoi, Keisuke Morisaki
  • Patent number: 9638096
    Abstract: A vehicle is equipped with an internal combustion engine having a forced-induction apparatus with variable boost pressure, a first motor generator for generating electricity while applying negative torque to the engine, and a battery for storing the electricity generated by the first motor generator. During the operation of the engine, a target boost pressure is set lower as the rotational speed of the first motor generator is increased. The engine is controlled such that, with the boost pressure adjusted to the target boost pressure, the output torque of the engine has a required value determined by the accelerator operation amount. Further, while the output torque of the engine is adjusted to the required value, the magnitude of the negative torque by the first motor generator acting on the engine is adjusted such that the engine rotational speed has a target value.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: May 2, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yusuke Kamijo, Keisuke Morisaki
  • Publication number: 20170066435
    Abstract: When a starting point water temperature Twst is equal to or lower than a threshold value Twref1, catalyst warm-up control is executed, and when a cooling water temperature Tw becomes higher than the threshold value Twref1 or an operation time top of an engine becomes equal to or higher than a threshold value topref1, the control of the engine is shifted from the catalyst warm-up control to normal control. When the starting point water temperature Twst is higher than the threshold value Twref1 and is equal to or lower than a threshold value Twref2, PN suppression control is executed, and when the cooling water temperature Tw of the engine becomes higher than the threshold value Twref2 or the operation time top of the engine becomes equal to or higher than a threshold value topref2, the control of the engine is shifted from the PN suppression control to the normal control.
    Type: Application
    Filed: September 7, 2016
    Publication date: March 9, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keisuke MORISAKI, Takahiro NISHIGAKI, Daigo ANDO, Yuichiro KAWAI
  • Publication number: 20170043761
    Abstract: A movement assistance apparatus that assists movement of a vehicle including an engine and a motor includes: a planning unit configured to plan a first mode or a second mode as a drive mode for each section into which a travel route is sectioned, an amount of charge of a battery not being kept in the first mode, the amount of charge of the battery being kept in the second mode; and a control unit being configured to, when a current remaining amount of charge of the battery is smaller than a remaining amount of charge of the battery required to travel in the first mode over the entire section, control the drive mode of the section to the first mode until the remaining amount of charge of the battery becomes zero irrespective of the drive mode planned by the planning unit for the section including the current section.
    Type: Application
    Filed: April 13, 2015
    Publication date: February 16, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke MORISAKI
  • Publication number: 20170043790
    Abstract: A movement assistance apparatus that assists movement of a vehicle having an internal combustion engine and a motor as drive sources from a departure place to a destination includes: a planning unit that plans one of a first travel mode and a second travel mode in relation to respective sections marked out on a travel route from the departure place to the destination; a predicted distance calculation unit that calculates a predicted distance over which the vehicle can travel in the first travel mode from the amount of power stored in the battery; and a display unit that displays set travel modes from a current location up to a point on the travel route located a predetermined distance ahead of the current location, wherein the display unit displays the predicted distance, and determines the predetermined distance to be displayed on the basis of the predicted distance.
    Type: Application
    Filed: April 13, 2015
    Publication date: February 16, 2017
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke MORISAKI
  • Patent number: 9481359
    Abstract: When an air density is relatively low and a predicted regeneration zone is present within a predetermined travel distance, a vehicle control device executes at least one of the following: i) prohibition of setting a target value of a remaining battery level to a corrected target value; and ii) prohibition of control of an engine and a motor based on the corrected target value.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: November 1, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke Morisaki
  • Publication number: 20160280072
    Abstract: A control device for a vehicle is equipped with second determination means for determining that the vehicle is stopped when first determination means determines that a rotational speed of a three-phase alternating-current electric motor is equal to or lower than a predetermined threshold and that a stop operation is performed, control means for controlling an electric power converter such that a state of the electric power converter becomes a specific state where i) all the first switching are off and at least one of the second switching elements is on or ii) all the second switching elements are off and at least one of the first elements is on, and threshold setting means for setting the predetermined threshold based on a temperature of a magnet of the three-phase alternating-current electric motor.
    Type: Application
    Filed: October 24, 2014
    Publication date: September 29, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki OKAMURA, Sintaro TSUJII, Wanleng ANG, Yoshitaka NIIMI, Hideaki YAGUCHI, Keisuke MORISAKI
  • Publication number: 20160272190
    Abstract: An ECU changes driving force characteristics in accordance with a changeover in mode, such that the vehicle driving torque for the same vehicle speed and the same accelerator opening degree becomes larger during a CD mode than during a CS mode. In changing the driving force characteristics in accordance with the changeover in mode, the ECU executes a slow change process such that the vehicle driving torque approaches a value after the changeover in mode from a value before the changeover in mode as time passes. In this slow change process, the speed of change in the vehicle driving torque in the slow change process is more strictly limited when the changeover in mode is made based on host vehicle position information than when the changeover in mode is made in accordance with the operation of a mode switch.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 22, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Keisuke MORISAKI
  • Publication number: 20160264001
    Abstract: A vehicle control apparatus is provided with an upper controlling device and a lower controlling device. The upper controlling device has: a first determining device configured to determine whether or not the number of revolutions of a three-phase AC motor is less than or equal to a predetermined threshold value and whether or not a stop operation which can stop the vehicle is performed; a second determining device configured to determine that the vehicle is stopped if it is determined that the number of revolutions of the three-phase AC motor is less than or equal to the predetermined threshold value and that the stop operation is performed; and a commanding device configured to output a particular control command for setting the state of a power converter to a particular state if it is determined that the vehicle is stopped. The lower controlling device controls the power converter to be in the particular state after a lapse of a predetermined period from the reception of the particular control command.
    Type: Application
    Filed: October 31, 2014
    Publication date: September 15, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro TSUJII, Yoshitaka NIIMI, Masaki OKAMURA, Wanleng ANG, Hideaki YAGUCHI, Keisuke MORISAKI, Hichirosai OYOBE