Patents by Inventor Naoki HAYASHIMA

Naoki HAYASHIMA 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: 20240123794
    Abstract: An electronic control device of a vehicle including an engine, a motor rotationally driven by the engine, and an air conditioner includes: (a) limiting a power consumption of a motor compressor that drives the air conditioner to be less than a predetermined amount when a state-of-charge value SOC of a main battery that is charged by electric power generated by the motor is less than a determination value SOC in a case where the engine is running in an engine using the engine as a power source and the vehicle is in a predetermined high-altitude environment; (b) the operation of the air conditioner is stopped when the state-of-charge value SOC is less than a determination value SOC that is lower than a determination value.
    Type: Application
    Filed: August 7, 2023
    Publication date: April 18, 2024
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki HAYASHIMA, Yoshiaki TSURUTA, Yoshio HASEGAWA
  • Publication number: 20230192065
    Abstract: A control apparatus for a vehicle that includes an engine as a drive power source, a rotating machine as an electric power generator, and an electric storage device. The control apparatus executes an automatic drive control for automatically controlling a torque of the drive power source in accordance with a requested drive torque without requiring an acceleration/deceleration operation by a driver of the vehicle. During an engine running of the vehicle, the rotating machine is rotated by the engine to generate an electric power, and a charging amount, by which the electric storage device is to be charged, is controlled by controlling the electric power generated by the rotating machine. The control apparatus is configured, during an automatic driving of the vehicle, to set the charging amount such that the charging amount is smaller when the requested drive torque is small than when the requested drive torque is large.
    Type: Application
    Filed: November 14, 2022
    Publication date: June 22, 2023
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki HAYASHIMA, Nobufusa KOBAYASHI, Yoshiaki TSURUTA, Koki MINAMIKAWA
  • Patent number: 11401885
    Abstract: An engine unit includes an engine including a cylinder injection valve that sprays fuel into a combustion chamber and an ignition plug that is able to ignite fuel sprayed from the cylinder injection valve. When expansion stroke injection drive of performing final fuel injection from the cylinder injection valve in an expansion stroke and igniting the fuel using the ignition plug in synchronization with the fuel injection in the expansion stroke is performed, upper and lower limits of an ignition timing are guarded such that the ignition timing is in a predetermined range centered on a final fuel injection start timing at a final determination timing of the ignition timing.
    Type: Grant
    Filed: June 25, 2021
    Date of Patent: August 2, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masatomo Yoshihara, Taejin Yoon, Naoki Hayashima, Masanao Idogawa, Takahiro Uchida
  • Publication number: 20220018305
    Abstract: An engine unit includes an engine including a cylinder injection valve that sprays fuel into a combustion chamber and an ignition plug that is able to ignite fuel sprayed from the cylinder injection valve. When expansion stroke injection drive of performing final fuel injection from the cylinder injection valve in an expansion stroke and igniting the fuel using the ignition plug in synchronization with the fuel injection in the expansion stroke is performed, upper and lower limits of an ignition timing are guarded such that the ignition timing is in a predetermined range centered on a final fuel injection start timing at a final determination timing of the ignition timing.
    Type: Application
    Filed: June 25, 2021
    Publication date: January 20, 2022
    Inventors: Masatomo YOSHIHARA, Taejin YOON, Naoki HAYASHIMA, Masanao IDOGAWA, Takahiro UCHIDA
  • Patent number: 10837387
    Abstract: An engine control device includes an electronic control unit. The electronic control unit is configured to perform a spark discharge with an ignition plug for each cylinder by cutting off energization after elapse of a predetermined period from start of energization to an ignition coil for each cylinder of the engine, to stop the spark discharge caused by the ignition plug for each cylinder after supply of fuel to the engine is stopped when operation of the engine is stopped, and to control an ignition plug so as to stop the spark discharge caused by the ignition plug from a cylinder after a rotation speed of a crankshaft decreases gradually and the rotation speed of the crankshaft reaches a preset threshold value or less, after the stop of the supply of fuel to the engine.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: November 17, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Hayashima, Masatomo Yoshihara, Koji Murakami
  • Patent number: 10683821
    Abstract: An engine control device includes an electronic control unit. The electronic control unit is configured to perform a spark discharge with an ignition plug for each cylinder by cutting off energization after elapse of a predetermined period from start of energization to an ignition coil for each cylinder of the engine, to stop the spark discharge caused by the ignition plug for each cylinder after supply of fuel to the engine is stopped when operation of the engine is stopped, and to control an ignition plug so as to stop the spark discharge caused by the ignition plug from a cylinder after a rotation speed of a crankshaft decreases gradually and the rotation speed of the crankshaft reaches a preset threshold value or less, after the stop of the supply of fuel to the engine.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: June 16, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Hayashima, Masatomo Yoshihara, Koji Murakami
  • Patent number: 10393046
    Abstract: A vehicle includes: an internal combustion engine including a fuel injection valve, a spark plug, and an electrically powered motor that rotates a crankshaft; and a controller that causes the internal combustion engine to start in a case where a starting condition is established while the internal combustion engine is stopped. The controller is configured to perform, when the starting condition is established, a first firing-combined starting that injects fuel into the combustion chamber by means of the fuel injection valve and performs, for a first time, a firing that ignites the injected fuel by means of the spark plug and, together therewith, starts driving of the motor, and after the speed of the internal combustion engine exceeds a predetermined determination threshold value that is greater than a resonance band, performs the firing for a second and succeeding times in sequence.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: August 27, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Naoki Hayashima
  • Publication number: 20190178222
    Abstract: An engine control device includes an electronic control unit. The electronic control unit is configured to perform a spark discharge with an ignition plug for each cylinder by cutting off energization after elapse of a predetermined period from start of energization to an ignition coil for each cylinder of the engine, to stop the spark discharge caused by the ignition plug for each cylinder after supply of fuel to the engine is stopped when operation of the engine is stopped, and to control an ignition plug so as to stop the spark discharge caused by the ignition plug from a cylinder after a rotation speed of a crankshaft decreases gradually and the rotation speed of the crankshaft reaches a preset threshold value or less, after the stop of the supply of fuel to the engine.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 13, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki HAYASHIMA, Masatomo Yoshihara, Koji Murakami
  • Publication number: 20190178221
    Abstract: An engine control device includes an electronic control unit. The electronic control unit is configured to perform a spark discharge with an ignition plug for each cylinder by cutting off energization after elapse of a predetermined period from start of energization to an ignition coil for each cylinder of the engine, to stop the spark discharge caused by the ignition plug for each cylinder after supply of fuel to the engine is stopped when operation of the engine is stopped, and to control an ignition plug so as to stop the spark discharge caused by the ignition plug from a cylinder after a rotation speed of a crankshaft decreases gradually and the rotation speed of the crankshaft reaches a preset threshold value or less, after the stop of the supply of fuel to the engine.
    Type: Application
    Filed: February 13, 2019
    Publication date: June 13, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki HAYASHIMA, Masatomo YOSHIHARA, Koji MURAKAMI
  • Publication number: 20180230959
    Abstract: An engine control device includes an electronic control unit. The electronic control unit is configured to perform a spark discharge with an ignition plug for each cylinder by cutting off energization after elapse of a predetermined period from start of energization to an ignition coil for each cylinder of the engine, to stop the spark discharge caused by the ignition plug for each cylinder after supply of fuel to the engine is stopped when operation of the engine is stopped, and to control an ignition plug so as to stop the spark discharge caused by the ignition plug from a cylinder after a rotation speed of a crankshaft decreases gradually and the rotation speed of the crankshaft reaches a preset threshold value or less, after the stop of the supply of fuel to the engine.
    Type: Application
    Filed: February 13, 2018
    Publication date: August 16, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Hayashima, Masatomo Yoshihara, Koji Murakami
  • Publication number: 20180216555
    Abstract: A vehicle includes: an internal combustion engine including a fuel injection valve, a spark plug, and an electrically powered motor that rotates a crankshaft; and a controller that causes the internal combustion engine to start in a case where a starting condition is established while the internal combustion engine is stopped. The controller is configured to perform, when the starting condition is established, a first firing-combined starting that injects fuel into the combustion chamber by means of the fuel injection valve and performs, for a first time, a firing that ignites the injected fuel by means of the spark plug and, together therewith, starts driving of the motor, and after the speed of the internal combustion engine exceeds a predetermined determination threshold value that is greater than a resonance band, performs the firing for a second and succeeding times in sequence.
    Type: Application
    Filed: January 12, 2018
    Publication date: August 2, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Naoki HAYASHIMA
  • Patent number: 9970403
    Abstract: When a start condition is satisfied after the internal combustion engine has been stopped according to an automatic stop control, a control apparatus reversely rotates the engine to compress an air in an expansion stroke cylinder at that time point, and thereafter generates a first time combustion. The apparatus determines whether the start condition becomes satisfied based on a first start request owing to a driving operation by a driver of a vehicle on which the engine is mounted. When the start condition becomes satisfied based on the first start request, the control apparatus makes a maximum value of an engine generating torque by the first time combustion and/or a maximum torque of the engine generating torque by a second time combustion larger as compared to when the start condition becomes satisfied based on a second start request other than the first start request.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: May 15, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naoki Hayashima, Mitsuhiro Tabata, Koji Murakami, Tomoya Takahashi
  • Publication number: 20180058407
    Abstract: When a start condition is satisfied after the internal combustion engine has been stopped according to an automatic stop control, a control apparatus reversely rotates the engine to compress an air in an expansion stroke cylinder at that time point, and thereafter generates a first time combustion. The apparatus determines whether the start condition becomes satisfied based on a first start request owing to a driving operation by a driver of a vehicle on which the engine is mounted. When the start condition becomes satisfied based on the first start request, the control apparatus makes a maximum value of an engine generating torque by the first time combustion and/or a maximum torque of the engine generating torque by a second time combustion larger as compared to when the start condition becomes satisfied based on a second start request other than the first start request.
    Type: Application
    Filed: August 22, 2017
    Publication date: March 1, 2018
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki HAYASHIMA, Mitsuhiro TABATA, Koji MURAKAMI, Tomoya TAKAHASHI
  • Patent number: 9586576
    Abstract: A control device is applied to a hybrid vehicle (1A) in which an internal combustion engine (2) and an MG (3) are connected through a second clutch (21), the MG (3) and a transmission (10) are connected through a first clutch (20) whose state is switchable by a depression operation of a clutch pedal (CP), and an output shaft (12) of the transmission (10) is connected to a driving wheel (5) so as to transmit power. The control device starts the internal combustion engine (2) when an accelerator opening is equal to or greater than a start determination value. When the vehicle (1A) is stopped and the internal combustion engine (2) is stopped, and when the amount of return of the clutch pedal (CP) is small, the control device makes the start determination value greater than when the amount of return of the clutch pedal (CP) is great.
    Type: Grant
    Filed: January 16, 2014
    Date of Patent: March 7, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki Hayashima, Koji Murakami, Takaaki Tanaka
  • Publication number: 20150360672
    Abstract: A control device is applied to a hybrid vehicle (1A) in which an internal combustion engine (2) and an MG (3) are connected through a second clutch (21), the MG (3) and a transmission (10) are connected through a first clutch (20) whose state is switchable by a depression operation of a clutch pedal (CP), and an output shaft (12) of the transmission (10) is connected to a driving wheel (5) so as to transmit power. The control device starts the internal combustion engine (2) when an accelerator opening is equal to or greater than a start determination value. When the vehicle (1A) is stopped and the internal combustion engine (2) is stopped, and when the amount of return of the clutch pedal (CP) is small, the control device makes the start determination value greater than when the amount of return of the clutch pedal (CP) is great.
    Type: Application
    Filed: January 16, 2014
    Publication date: December 17, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki HAYASHIMA, Koji MURAKAMI, Takaaki TANAKA