Patents by Inventor Hideki Kamatani

Hideki Kamatani 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: 20230286505
    Abstract: A driving assistance apparatus includes an on-vehicle sensor and a driving assistance ECU. The ECU detects presence of a preceding vehicle traveling immediately forward of an own vehicle, on the basis of pieces of information from the sensor, chooses the preceding vehicle as a vehicle to follow, and controls a drive apparatus, a braking apparatus, and a steering apparatus such that the own vehicle follows the vehicle to follow. When the own vehicle follows a first vehicle chosen as the vehicle to follow and the speed of the own vehicle or the first vehicle is a predetermined threshold speed or lower, upon determination that the own vehicle can follow a second vehicle traveling faster than the own vehicle in a second lane located adjacent to a first lane in which the own vehicle is traveling, the ECU changes the vehicle to follow from the first vehicle to the second vehicle.
    Type: Application
    Filed: March 6, 2023
    Publication date: September 14, 2023
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATION
    Inventors: Hideki KAMATANI, Masayuki HOSOKAWA, Yuuki TAKEUCHI, Ryotarou ARAKI, Yasuhiro IMAI
  • Publication number: 20230234587
    Abstract: A vehicle driving assistance apparatus predicts (i) a first consumed energy amount corresponding to a consumed energy amount consumed by a driving apparatus of an own vehicle when executing a first following control and (ii) a second consumed energy amount corresponding to the consumed energy amount consumed by the driving apparatus of the own vehicle when executing the second following control. The apparatus executes the second following control when the second consumed energy amount is smaller than the first consumed energy amount. On the other hand, the apparatus executes the first following control when the second consumed energy amount is equal to or greater than the first consumed energy amount.
    Type: Application
    Filed: January 17, 2023
    Publication date: July 27, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Tatsuya ITO, Hideki Kamatani
  • Publication number: 20230145836
    Abstract: While an ordinary moving assist control is executed, a vehicle driving assist apparatus stops the ordinary moving assist control and execute an ordinary moving control to accelerate an own vehicle, based on an accelerator pedal operation amount when an accelerator override state is produced due to an operation of an accelerator pedal of the own vehicle. While an economy moving assist control is executed, the vehicle driving assist apparatus accelerates the own vehicle by an optimum acceleration control when an acceleration request condition that the accelerator override state is produced, is satisfied.
    Type: Application
    Filed: October 27, 2022
    Publication date: May 11, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hideki KAMATANI
  • Publication number: 20230098792
    Abstract: A vehicle driving assist apparatus sets a lower limit of an enlarged vehicle moving speed control range such that a first lower limit difference is smaller than a second lower limit difference while an enlarged constant speed moving control is executed. The first lower limit difference is a difference between the lower limit of the enlarged vehicle moving speed control range and a set vehicle moving speed when a constant speed acceleration determination change condition is satisfied. The second lower limit difference is the difference between the lower limit of the enlarged vehicle moving speed control range and the set vehicle moving speed when the constant speed acceleration determination change condition is not satisfied. The constant speed acceleration determination change condition is a condition that the set vehicle moving speed is equal to or smaller than a predetermined vehicle moving speed.
    Type: Application
    Filed: September 16, 2022
    Publication date: March 30, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hideki KAMATANI
  • Publication number: 20220185280
    Abstract: A vehicle driving assistance system performs traveling assistance control under which an own vehicle automatically travels with. The traveling assistance control includes first constant-speed control for automatically controlling the acceleration of the own vehicle, based on a first vehicle-speed range including a set vehicle speed, such that the vehicle speed of the own vehicle is kept equal to the set vehicle speed, and second constant-speed control for automatically controlling the acceleration of the own vehicle, based on a second vehicle-speed range including the set vehicle speed, such that the vehicle speed of the own vehicle is kept equal to the set vehicle speed. The second vehicle-speed range is set to a wider range than the first vehicle-speed range. The vehicle driving assistance system switches the traveling assistance control between the first constant-speed control and the second constant-speed control, according to the traveling state of the own vehicle.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 16, 2022
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideki KAMATANI, Hideaki ISHIHARA
  • Patent number: 11001251
    Abstract: During a hybrid drive, a hybrid vehicle sets an engine required power based on a driving required power and controls an engine to output the engine required power, while controlling a motor to drive the hybrid vehicle with the driving required power. When a catalyst temperature of an exhaust emission control device is equal to or lower than a predetermined temperature that requires warming up, in the state that an output upper limit power which a power storage device is allowed to output is equal to or larger than a predetermined power, the hybrid vehicle sets a power calculated by subtracting the output upper limit power from the driving required power, to the engine required power. In the state that the output upper limit power is smaller than the predetermined power, the hybrid vehicle sets the driving required power to the engine required power.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: May 11, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Kamatani, Kazuma Aoki, Koji Hokoi
  • Publication number: 20210070314
    Abstract: The vehicle driving assist apparatus can execute at least one of an acceleration/deceleration control as a driving assist control to automatically accelerate and decelerate an own vehicle and a steering control as the driving assist control to automatically steer the own vehicle. The vehicle driving assist apparatus includes a driving assist restart switch operated by a driver of the own vehicle to restart the driving assist control. The vehicle driving assist apparatus does not restart the acceleration/deceleration control even when the driving assist restart switch is operated after stopping the acceleration/deceleration control in response to the driver performing an automatic acceleration/deceleration rejection operation. The vehicle driving assist apparatus does not restart the steering control even when the driving assist restart switch is operated after stopping the steering control in response to the driver performing an automatic steering rejection operation.
    Type: Application
    Filed: September 3, 2020
    Publication date: March 11, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki MATSUNAGA, Atsuko YAMADA, Kohsuke FUJII, Hideki KAMATANI, Yuzuru KAMOGARI, Soichi OKUBO
  • Patent number: 10919516
    Abstract: When the state of charge of a power storage device is equal to or higher than a predetermined ratio in a specific acceleration time where an acceleration request is equal to or greater than a predetermined level, a hybrid vehicle controls an engine such that the rotation speed of the engine is not increased in a range of an output limit of the power storage device and that the engine is operated at an operation point on a fuel consumption priority operation line. When the state of charge of the power storage device is lower than the predetermined ratio in the specific acceleration time, the hybrid vehicle controls the engine such that the rotation speed of the engine is not increased in the range of the output limit of the power storage device and that the engine is operated at an operation point on a power priority operation line.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: February 16, 2021
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Hideki Kamatani
  • Patent number: 10486688
    Abstract: When a temperature of a catalyst in an exhaust emission control device mounted in an exhaust system of an engine is equal to or higher than a predetermined temperature at a time of a request for stopping the engine, a hybrid vehicle including the engine and a motor continues fuel injection of the engine until satisfaction of a predetermined condition and stops fuel injection of the engine on satisfaction of the predetermined condition. When the temperature of the catalyst is lower than the predetermined temperature at the time of the request for stopping the engine, on the other hand, the hybrid vehicle immediately stops fuel injection of the engine.
    Type: Grant
    Filed: January 29, 2018
    Date of Patent: November 26, 2019
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideki Kamatani, Koji Hokoi
  • Publication number: 20190184965
    Abstract: When the state of charge of a power storage device is equal to or higher than a predetermined ratio in a specific acceleration time where an acceleration request is equal to or greater than a predetermined level, a hybrid vehicle controls an engine such that the rotation speed of the engine is not increased in a range of an output limit of the power storage device and that the engine is operated at an operation point on a fuel consumption priority operation line. When the state of charge of the power storage device is lower than the predetermined ratio in the specific acceleration timer the hybrid vehicle controls the engine such that the rotation speed of the engine is not increased in the range of the output limit of the power storage device and that the engine is operated at an operation point on a power priority operation line.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 20, 2019
    Inventor: Hideki Kamatani
  • Publication number: 20190161070
    Abstract: During a hybrid drive, a hybrid vehicle sets an engine required power based on a driving required power and controls an engine to output the engine required power, while controlling a motor to drive the hybrid vehicle with the driving required power. When a catalyst temperature of an exhaust emission control device is equal to or lower than a predetermined temperature that requires warming up, in the state that an output upper limit power which a power storage device is allowed to output is equal to or larger than a predetermined power, the hybrid vehicle sets a power calculated by subtracting the output upper limit power from the driving required power, to the engine required power. In the state that the output upper limit power is smaller than the predetermined power, the hybrid vehicle sets the driving required power to the engine required power.
    Type: Application
    Filed: November 21, 2018
    Publication date: May 30, 2019
    Inventors: Hideki Kamatani, Kazuma Aoki, Koji Hokoi
  • Patent number: 10246079
    Abstract: A hybrid vehicle comprises an engine configured to output power for driving and equipped with an exhaust emission control device in an exhaust system thereof. The hybrid vehicle further comprises a control device. In response to a predetermined rotation request for rotating the engine with no need to output power from the engine, the control device performs a control to rotate the engine with fuel injection when a catalyst temperature in the exhaust emission control device is equal to or higher than a predetermined temperature, while performing a control to rotate the engine without the fuel injection when the catalyst temperature is lower than the predetermined temperature.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: April 2, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Kamatani, Koji Hokoi
  • Patent number: 10166878
    Abstract: A power supply apparatus of a vehicle includes: auxiliary machines electrically connected between a battery and a converter; and a control device controlling inverters and the like based on a required vehicle power including a required charge discharge amount of the battery. The control device has a continuous voltage step-up mode and an intermittent voltage step-up mode. In the continuous voltage step-up mode, the control device calculates the required charge discharge amount based on electric power supplied from the battery. In the intermittent voltage step-up mode, the control device changes a method of calculating the required charge discharge amount to a method that calculates the required charge discharge amount based on electric power passing through the converter, and makes the required charge discharge amount smaller than the required charge discharge amount in the continuous voltage step-up mode.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: January 1, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Suguru Kumazawa, Hideki Kamatani, Ryoji Sato
  • Patent number: 10160444
    Abstract: A vehicle includes an electric power storage device, an electric motor, and an electronic control unit. The electronic control unit is configured to control charging and discharging of the electric power storage device such that a state of charge becomes a target state of charge, to determine whether or not a degree of deterioration of the electric power storage device due to unevenness in salt concentration is equal to or larger than a predetermined degree, when the degree of deterioration is equal to or larger than the predetermined degree and the state of charge is equal to or less than a predetermined requested state of charge, to set the target state of charge such that the target state of charge increases monotonically, and to set an increase amount or an increase rate of the monotonic increase to be larger as the degree of deterioration is larger.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: December 25, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hideki Kamatani
  • Patent number: 10099563
    Abstract: Provided are a power supply device for a vehicle provided with a battery, a converter, and a controller, and a method for controlling the same. The controller controls the converter in a continuous boost mode in which the converter is continuously operated and an intermittent boost mode in which the converter is intermittently operated. The controller does not control the converter in the intermittent boost mode when a control that adjusts a reference point of a resolver of a motor generator is underway.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: October 16, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Suguru Kumazawa, Hideki Kamatani, Ryoji Sato
  • Publication number: 20180265075
    Abstract: When a temperature of a catalyst in an exhaust emission control device mounted in an exhaust system of an engine is equal to or higher than a predetermined temperature at a time of a request for stopping the engine, a hybrid vehicle including the engine and a motor continues fuel injection of the engine until satisfaction of a predetermined condition and stops fuel injection of the engine on satisfaction of the predetermined condition. When the temperature of the catalyst is lower than the predetermined temperature at the time of the request for stopping the engine, on the other hand, the hybrid vehicle immediately stops fuel injection of the engine.
    Type: Application
    Filed: January 29, 2018
    Publication date: September 20, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideki KAMATANI, Koji HOKOI
  • Patent number: 9987947
    Abstract: A power supply apparatus of a vehicle includes: an engine and a first MG; a battery; a converter stepping up a voltage of the battery and supplying the stepped-up voltage to an inverter of the vehicle; and a control device controlling the converter in a continuous voltage step-up mode in which the converter is continuously operated and an intermittent voltage step-up mode in which the converter is intermittently operated. The control device estimates an SOC of the battery based on battery current IB flowing into and out of the battery, and forces the battery to be charged by the engine and the first MG when an estimate value of the SOC is lower than a predetermined lower limit. The control device suppresses an operation of the converter in the intermittent voltage step-up mode to a greater extent as the estimate value of the SOC is closer to the lower limit.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: June 5, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideki Kamatani, Suguru Kumazawa, Ryoji Sato
  • Publication number: 20180148040
    Abstract: A hybrid vehicle comprises an engine configured to output power for driving and equipped with an exhaust emission control device in an exhaust system thereof. The hybrid vehicle further comprises a control device. In response to a predetermined rotation request for rotating the engine with no need to output power from the engine, the control device performs a control to rotate the engine with fuel injection when a catalyst temperature in the exhaust emission control device is equal to or higher than a predetermined temperature, while performing a control to rotate the engine without the fuel injection when the catalyst temperature is lower than the predetermined temperature.
    Type: Application
    Filed: November 28, 2017
    Publication date: May 31, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hideki KAMATANI, Koji HOKOI
  • Publication number: 20180111601
    Abstract: A vehicle includes an electric power storage device, an electric motor, and an electronic control unit. The electronic control unit is configured to control charging and discharging of the electric power storage device such that a state of charge becomes a target state of charge, to determine whether or not a degree of deterioration of the electric power storage device due to unevenness in salt concentration is equal to or larger than a predetermined degree, when the degree of deterioration is equal to or larger than the predetermined degree and the state of charge is equal to or less than a predetermined requested state of charge, to set the target state of charge such that the target state of charge increases monotonically, and to set an increase amount or an increase rate of the monotonic increase to be larger as the degree of deterioration is larger.
    Type: Application
    Filed: October 10, 2017
    Publication date: April 26, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Hideki KAMATANI
  • Patent number: 9821794
    Abstract: When a catalyst temperature is lower than a predetermined temperature on a second or subsequent start of an engine since system activation of a vehicle, a catalyst warm-up request is output for the purpose of warming up a catalyst in a catalytic converter. An output limit Wout of a battery is not increased in response to a second or subsequent output of the catalyst warm-up request, while being increased in response to a first output of the catalyst warm-up request. Accordingly, the catalyst warm-up in response to the second or subsequent output of the catalyst warm-up request since the system activation suppresses excessive output of electric power from the battery and thereby suppresses deterioration of the battery. Catalyst warm-up is performed in response to the second or subsequent output of the catalyst warm-up request. This suppresses deterioration of emission.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: November 21, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Koichiro Muta, Hideki Kamatani, Takao Itoh, Makoto Yamasaki, Ryo Mano, Masahiro Kagami, Hiroki Endo