Patents by Inventor Norihiko IKOMA

Norihiko IKOMA 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: 20220396153
    Abstract: The disclosed vehicle braking device controls a hydraulic brake system (2) and a regeneration brake system (3) mounted on a vehicle (1) in accordance with an acceleration value and a brake value, and includes a first divider (11), a second divider (12), and a controller (13). The first divider (11) divides a driver demand torque set according to the accelerator value into a target coast torque and a remaining torque. The second divider (12) divides a sum of a deceleration torque set according to the brake value and the target coast torque divided by the first divider (11) into a hydraulic-brake demand torque and a regeneration-brake demand torque. The controller (13) controls the hydraulic brake system (2), using the hydraulic-brake demand torque, and controls the regeneration brake system (3), using a total regeneration brake torque calculated from the remaining torque and the regeneration-brake demand torque.
    Type: Application
    Filed: March 29, 2021
    Publication date: December 15, 2022
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Naoki MIYAMOTO, Takanori SUGIMOTO, Norihiko IKOMA
  • Publication number: 20220290645
    Abstract: A start control device for a hybrid vehicle includes a battery, first and second rotary electric machines, an engine, a first determination unit configured to determine whether the battery is in a low output state, a cranking control unit configured to perform a cracking of the engine, and a second determination unit configured to perform a cranking completion determination. In a case where a maximum output of the battery is in the low output state, the cranking control unit causes the first rotary electric machine to run at a low output target rotation speed, and the second determination unit determines that the cranking is completed when a condition that an actual rotation speed of the first rotary electric machine continues to be within a target range for a predetermined time is satisfied.
    Type: Application
    Filed: September 25, 2020
    Publication date: September 15, 2022
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Sosuke NAMBU, Norihiko IKOMA, Takanori SUGIMOTO
  • Publication number: 20220274598
    Abstract: A motor control device for an electric vehicle, which includes a power transmission path configured such that an output of a first motor and an output of a second motor are, respectively, transmittable to left and right wheels of the vehicle via a differential mechanism, includes a non-interference correction part for predictively correcting an output from a first motor control part or a second motor control part to an opposite motor to a motor performing vibration suppression correction via the power transmission path, such that a change in motor output by a vibration suppression correction torque amount cancels an interference torque interfering with a motor output of the opposite motor.
    Type: Application
    Filed: October 13, 2020
    Publication date: September 1, 2022
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Naoki MIYAMOTO, Norihiko IKOMA
  • Patent number: 11292474
    Abstract: A power generation control device includes: an internal combustion engine of a vehicle; a generator driven by the internal combustion engine to generate electricity; a power storage device charged by the generator; a gear mechanism that interconnects the internal combustion engine and the generator; a detection unit for detecting vehicle information of the vehicle; a power generation controller that sets a target power generation amount of the generator based on the vehicle information and calculates a target rotational speed of the internal combustion engine and a load torque of the generator according to the target power generation amount; and a rattle suppression controller which determines whether a rattle suppression control condition of the gear mechanism is satisfied or not based on the target power generation amount and raises the target rotational speed of the internal combustion engine to a predetermined rotation number when the condition is satisfied.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: April 5, 2022
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Sosuke Nambu, Norihiko Ikoma, Masahiro Mizuno
  • Patent number: 10688871
    Abstract: A regenerative braking control apparatus equipped on an electrically driven vehicle having road wheels and an electric motor for driving the road wheels for running. An operation unit is provided for the driver of the vehicle to select a magnitude of the braking force to be generated by the electric motor during regenerative braking. A determination unit determines, on the basis of conditions of the electrically driven vehicle, whether or not a selected braking force selected through the operation unit is acceptable. A notifier unit is constructed such that, in a case where the selected braking force is determined to be unacceptable by the determination unit, the notifier unit provides a corresponding notification to the driver.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: June 23, 2020
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryo Shimizu, Kazunori Handa, Norihiko Ikoma, Yoshinori Tomita
  • Publication number: 20190381994
    Abstract: A power generation control device includes: an internal combustion engine of a vehicle; a generator driven by the internal combustion engine to generate electricity; a power storage device charged by the generator; a gear mechanism that interconnects the internal combustion engine and the generator; a detection unit for detecting vehicle information of the vehicle; a power generation controller that sets a target power generation amount of the generator based on the vehicle information and calculates a target rotational speed of the internal combustion engine and a load torque of the generator according to the target power generation amount; and a rattle suppression controller which determines whether a rattle suppression control condition of the gear mechanism is satisfied or not based on the target power generation amount and raises the target rotational speed of the internal combustion engine to a predetermined rotation number when the condition is satisfied.
    Type: Application
    Filed: June 12, 2019
    Publication date: December 19, 2019
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Sosuke NAMBU, Norihiko IKOMA, Masahiro MIZUNO
  • Patent number: 10449863
    Abstract: Provided is a regenerative coordination brake control device that reduces the frequency of switching regenerative braking between a restricted state, in which regenerative braking is prohibited or suppressed, and a restriction removed state, in which the restriction on regenerative braking is removed. A regenerative coordination brake control device 91 includes a regeneration restriction condition determiner 92, which outputs a regeneration restriction signal Si when determining that a restriction condition for prohibiting or suppressing regenerative braking is met, an acceleration operation detector 93, which outputs a regeneration restriction removal signal S2 when detecting an acceleration of the vehicle, and a regeneration restriction removal determiner 94, which determines whether a restriction on regenerative braking of the vehicle that is in the restricted state is to be continuously imposed or removed using the regeneration restriction removal signal S2 and the regeneration restriction signal S1.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: October 22, 2019
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Yoshinori Tomita, Ryo Shimizu, Norihiko Ikoma
  • Patent number: 10406935
    Abstract: In a hybrid vehicle including a front motor for driving front wheels, a rear motor for driving rear wheels, a generator for generating power by being driven by an internal combustion engine, and a step-up converter for stepping up the voltage from a battery and supplying power to the front motor, while stepping-down the generated power of the generator and supplying the power to the rear motor, a hybrid control unit decreases the power supplied from the generator to the rear motor, and increases the power supplied from the battery to the rear motor when input power of the step-up converter is limited based on a temperature condition of the step-up converter.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: September 10, 2019
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryo Shimizu, Norihiko Ikoma, Makoto Kamachi, Hironori Abe, Naoki Miyamoto
  • Patent number: 10239517
    Abstract: A controller of a hybrid vehicle includes: a control unit configured to activate a starter device for starting any one of a drive motor and an engine by stepping up electric power from a battery by a voltage transformer. The control unit includes a limitation part that limits passing power of the voltage transformer when the temperature of the voltage transformer rises, and a calculation part that obtains a maximum electric power that can be supplied to the drive motor when the starter device is activated, by subtracting a consumed power of the starter device from limited power during limitation of passing power by the limitation part. The control unit activates the starter device and starts the engine, when required power of the drive motor reaches the maximum electric power calculated by the calculation part during limitation of passing power by the limitation part.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 26, 2019
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Naoki Miyamoto, Norihiko Ikoma, Makoto Kamachi, Ryo Shimizu, Hironori Abe
  • Patent number: 10160441
    Abstract: A power controller of a hybrid vehicle includes: a first drive motor that drives any one of a front wheel and a rear wheel of a vehicle; an engine that drives the one wheel or the corresponding other one of the front wheel and the rear wheel of the vehicle through a clutch; a generator that is driven by the engine; and a voltage transformer that steps down generated electric power supplied to the first drive motor and a battery from the generator. The power controller limits passing power of the voltage transformer according to the temperature of the voltage transformer, and connects the clutch when the passing power of the voltage transformer is limited.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: December 25, 2018
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Makoto Kamachi, Ryo Shimizu, Norihiko Ikoma, Hironori Abe, Naoki Miyamoto
  • Patent number: 10093305
    Abstract: In a hybrid vehicle including a front motor for driving front wheels, and a step-up converter for stepping up voltage from a battery to supply power to the front motor, in which power regenerated by rotational force of the front wheel during vehicle deceleration is stepped down by a step-up converter and can be supplied to a battery, the hybrid vehicle includes a hybrid control unit which computes maximum input power of the step-up converter and regenerated power of the front motor during vehicle deceleration, and sets a difference obtained by subtracting regenerated power of the front motor from the maximum input power of the step-up converter to the maximum generated power of the generator.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: October 9, 2018
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryo Shimizu, Norihiko Ikoma, Makoto Kamachi, Hironori Abe, Naoki Miyamoto
  • Patent number: 10086825
    Abstract: In a hybrid vehicle including: a step-up converter for stepping-up the voltage from a battery and supplying power to the front motor for driving front wheels; as well as a paddle switch for setting regenerative braking torque stepwisely, and a hybrid control unit for calculating a regenerative braking force based on a selection stage set by the paddle switch, the hybrid control unit decreases the regenerative braking force to be less than the regenerative braking force while the maximum input/output power of the step-up converter is not limited, when a selection stage in which regenerative braking force is more than that in a D range is selected while the maximum input/output power of the step-up converter is limited.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: October 2, 2018
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryo Shimizu, Norihiko Ikoma, Makoto Kamachi, Hironori Abe, Naoki Miyamoto
  • Publication number: 20180257491
    Abstract: Provided is a regenerative coordination brake control device that reduces the frequency of switching regenerative braking between a restricted state, in which regenerative braking is prohibited or suppressed, and a restriction removed state, in which the restriction on regenerative braking is removed. A regenerative coordination brake control device 91 includes a regeneration restriction condition determiner 92, which outputs a regeneration restriction signal S1 when determining that a restriction condition for prohibiting or suppressing regenerative braking is met, an acceleration operation detector 93, which outputs a regeneration restriction removal signal S2 when detecting an acceleration of the vehicle, and a regeneration restriction removal determiner 94, which determines whether a restriction on regenerative braking of the vehicle that is in the restricted state is to be continuously imposed or removed using the regeneration restriction removal signal S2 and the regeneration restriction signal S1.
    Type: Application
    Filed: September 13, 2016
    Publication date: September 13, 2018
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Yoshinori TOMITA, Ryo SHIMIZU, Norihiko IKOMA
  • Patent number: 10059324
    Abstract: A hybrid vehicle including a front motor for driving front wheels, a rear motor for driving rear wheels, and a step-up converter for stepping-up the voltage from a battery and supplying power to the front motor, in which an engine is started to shift the vehicle from an EV mode into a series mode when the output power of the step-up converter is lower than the required power of the front motor, the hybrid vehicle includes a hybrid control unit which computes maximum output power of the step-up converter and, when the output power of the step-up converter is more than the maximum output power, increases the distribution ratio of the travel driving torque of the rear wheel, thereby increasing the output torque of the rear motor.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: August 28, 2018
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryo Shimizu, Norihiko Ikoma, Makoto Kamachi, Hironori Abe, Naoki Miyamoto
  • Publication number: 20180201140
    Abstract: A regenerative braking control apparatus equipped on an electrically driven vehicle having road wheels and an electric motor for driving the road wheels for running. An operation unit is provided for the driver of the vehicle to select a magnitude of the braking force to be generated by the electric motor during regenerative braking. A determination unit determines, on the basis of conditions of the electrically driven vehicle, whether or not a selected braking force selected through the operation unit is acceptable. A notifier unit is constructed such that, in a case where the selected braking force is determined to be unacceptable by the determination unit, the notifier unit provides a corresponding notification to the driver.
    Type: Application
    Filed: September 2, 2016
    Publication date: July 19, 2018
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryo SHIMIZU, Kazunori HANDA, Norihiko IKOMA, Yoshinori TOMITA
  • Patent number: 9862370
    Abstract: A control device for controlling an electric vehicle includes a driving source that rotates wheels, a braking device that applies braking force to the wheels, a creep torque control portion that controls magnitude of creep torque to be applied to the wheels, wherein the creep torque control portion includes a braking force detecting unit that detects the braking force applied by the braking device, a fundamental creep torque calculating unit that calculates fundamental creep torque corresponding to vehicle speed, a creep suppression torque calculating unit that calculates creep suppression torque smaller than the fundamental creep torque based on a result of the detection of the braking force detecting unit and a creep torque calculating unit that calculate the creep torque by subtracting the creep suppression torque from the fundamental creep torque.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 9, 2018
    Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Yusuke Sasaki, Norihiko Ikoma, Makoto Kamachi, Yoshinori Tomita, Ryo Shimizu
  • Publication number: 20170282894
    Abstract: A power controller of a hybrid vehicle includes: a first drive motor that drives any one of a front wheel and a rear wheel of a vehicle; an engine that drives the one wheel or the corresponding other one of the front wheel and the rear wheel of the vehicle through a clutch; a generator that is driven by the engine; and a voltage transformer that steps down generated electric power supplied to the first drive motor and a battery from the generator. The power controller limits passing power of the voltage transformer according to the temperature of the voltage transformer, and connects the clutch when the passing power of the voltage transformer is limited.
    Type: Application
    Filed: March 16, 2017
    Publication date: October 5, 2017
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Makoto KAMACHI, Ryo SHIMIZU, Norihiko IKOMA, Hironori ABE, Naoki MIYAMOTO
  • Publication number: 20170282898
    Abstract: In a hybrid vehicle including: a step-up converter for stepping-up the voltage from a battery and supplying power to the front motor for driving front wheels; as well as a paddle switch for setting regenerative braking torque stepwisely, and a hybrid control unit for calculating a regenerative braking force based on a selection stage set by the paddle switch, the hybrid control unit decreases the regenerative braking force to be less than the regenerative braking force while the maximum input/output power of the step-up converter is not limited, when a selection stage in which regenerative braking force is more than that in a D range is selected while the maximum input/output power of the step-up converter is limited.
    Type: Application
    Filed: March 21, 2017
    Publication date: October 5, 2017
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryo SHIMIZU, Norihiko IKOMA, Makoto KAMACHI, Hironori ABE, Naoki MIYAMOTO
  • Publication number: 20170282750
    Abstract: In a hybrid vehicle including a front motor for driving front wheels, a rear motor for driving rear wheels, a generator for generating power by being driven by an internal combustion engine, and a step-up converter for stepping up the voltage from a battery and supplying power to the front motor, while stepping-down the generated power of the generator and supplying the power to the rear motor, a hybrid control unit decreases the power supplied from the generator to the rear motor, and increases the power supplied from the battery to the rear motor when input power of the step-up converter is limited based on a temperature condition of the step-up converter.
    Type: Application
    Filed: March 29, 2017
    Publication date: October 5, 2017
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: Ryo SHIMIZU, Norihiko IKOMA, Makoto KAMACHI, Hironori ABE, Naoki MIYAMOTO
  • Publication number: 20170282891
    Abstract: A hybrid vehicle including a front motor for driving front wheels, a rear motor for driving rear wheels, and a step-up converter for stepping-up the voltage from a battery and supplying power to the front motor, in which an engine is started to shift the vehicle from an EV mode into a series mode when the output power of the step-up converter is lower than the required power of the front motor, the hybrid vehicle includes a hybrid control unit which computes maximum output power of the step-up converter and, when the output power of the step-up converter is more than the maximum output power, increases the distribution ratio of the travel driving torque of the rear wheel, thereby increasing the output torque of the rear motor.
    Type: Application
    Filed: March 13, 2017
    Publication date: October 5, 2017
    Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    Inventors: RYO SHIMIZU, Norihiko IKOMA, Makoto KAMACHI, Hironori ABE, Naoki MIYAMOTO