Patents by Inventor Kei Yonemori

Kei Yonemori 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: 11938801
    Abstract: To provide a vehicle drive device capable of effectively driving a vehicle by using in-wheel motors without falling into the vicious cycle between enhancement of driving via the motors and an increase in vehicle weight. The present invention is a vehicle drive device that uses in-wheel motors to drive a vehicle and includes in-wheel motors (20) that are provided in wheels (2b) of a vehicle (1) and drive the wheels, a body side motor (16) that is provided in a body of the vehicle and drives the wheels of the vehicle, and a battery (18) and a capacitor (22) that supply electric power for driving the in-wheel motors and/or the body side motor, in which a voltage of the battery is applied to the body side motor and a voltage of the battery and the capacitor connected in series is applied to the in-wheel motors.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: March 26, 2024
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Isao Toda, Seiyo Hirano, Kei Yonemori, Hideki Sanai
  • Patent number: 11738630
    Abstract: A vehicle drive device uses in-wheel motors to drive a vehicle and includes in-wheel motors that are provided in wheels of a vehicle and drive the wheels, a body side motor that is provided in a body of the vehicle and drives the wheels, and a controller that controls the in-wheel motors and the body side motor based on requested output power of a driver, in which the controller causes the body side motor to generate a driving force and the in-wheel motors not to generate driving forces when the requested output power of the driver is less than predetermined output power and the controller causes the body side motor and the in-wheel motors to generate driving forces when the requested output power of the driver is equal to or more than the predetermined output power.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: August 29, 2023
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Isao Toda, Seiyo Hirano, Kei Yonemori, Hideki Sanai
  • Patent number: 11718168
    Abstract: To provide a vehicle drive device capable of efficiently driving a vehicle by using a motor without falling into the vicious cycle between enhancement of driving via the motor and an increase in vehicle weight. The present invention is a vehicle drive device (10) having a motor for driving the wheels of a vehicle and includes a front wheel motor (20) for driving front wheels (2b) of a vehicle (1) and a battery (18) and a capacitor (22) that supply electric power for driving the front wheel motor (20), in which the voltage of the battery (18) and the capacitor (22) connected in series is applied to the front wheel motor (20) and the capacitor (22) is disposed between the left and right front wheels (2b) of the vehicle (1).
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: August 8, 2023
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Isao Toda, Seiyo Hirano, Kei Yonemori, Hideki Sanai
  • Publication number: 20230191893
    Abstract: To arrange a power unit, an electric power conversion unit, and engine-related components compactly, a drive motor, a reduction drive, a generator, and an engine body are integrally arranged in this order in a vehicle width direction of a power unit compartment such that respective heights thereof are substantially the same. An electric power conversion unit, in which a motor inverter, an electric power generation inverter, and a DC/DC converter are integrated, is arranged above the drive motor, the reduction drive, and the generator. Engine-related components such as a low-voltage battery, an air cleaner, and an oil filter are arranged above the engine body.
    Type: Application
    Filed: December 7, 2022
    Publication date: June 22, 2023
    Inventors: Osami Ohno, Satoshi Maruyama, Hiroshi Tanaka, Kei Yonemori, Akihiro Furukawa, Li-Hsuan Huang, Chih-Yuan Chen, Iou-Uei Jang
  • Patent number: 11608052
    Abstract: Provided is a vehicle capable of suppressing vibration of a drive unit having an engine and a motor to be small and having high vehicle motion performance. The drive unit for travel of the vehicle includes an engine and a motor. The engine is a rotary engine and has an engine output shaft and an engine housing. The motor has a motor output shaft, a rotor, and a stator that are accommodated in a motor housing. The engine housing of the engine and the motor housing of the motor are directly joined to each other. The engine output shaft and the motor output shaft are directly joined to each other. The rotor of the motor has: a main body section that generates a rotational magnetic field with the stator; and a weight section that functions as a balance weight of the engine.
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: March 21, 2023
    Assignee: Mazda Motor Corporation
    Inventors: Hiroshi Tanaka, Satoshi Ueno, Hiroshi Kinoshita, Kei Yonemori
  • Patent number: 11577599
    Abstract: To provide a vehicle, vehicle motion performance of which can be made high by downsizing a drive unit having an engine and a motor. A drive unit for vehicle travel has the engine and the motor. The motor is arranged adjacent to a rear side of the engine. In a housing of the motor, parts of oil control valves and motor cooling oil paths, through each of which motor cooling oil flows, are provided. The motor cooling oil flowing through first motor cooling oil paths exchanges heat with engine oil in a first heat exchanger. The motor cooling oil flowing through second motor cooling oil paths exchanges heat with an engine cooling coolant in a second heat exchanger.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: February 14, 2023
    Assignee: Mazda Motor Corporation
    Inventors: Hiroshi Tanaka, Satoshi Ueno, Kei Yonemori, Wataru Harazawa
  • Patent number: 11506108
    Abstract: In a cooling path of a motor, an oil control valve is provided between a motor cooling oil path and a first motor cooling path, a first heat exchanger is provided in the first motor cooling path, and a second heat exchanger is provided in a second motor cooling path. In a motor-drive mode, a valve control unit switches the oil control valve to the first motor cooling path side when an engine temperature is lower than a first threshold, and switches the oil control valve to the second motor cooling path side when the engine temperature is equal to or higher than the first threshold. In the first heat exchanger, motor cooling oil and engine oil exchange heat. In the second heat exchanger, the motor cooling oil and a coolant for the engine exchange heat.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: November 22, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Hiroshi Tanaka, Satoshi Ueno, Hiroshi Kinoshita, Kei Yonemori
  • Patent number: 11465491
    Abstract: A drive unit has engines and a motor that are adjacent to each other in a longitudinal direction. The engines are provided with an engine oil path and a coolant path for cooling. The motor is provided with a motor cooling oil path for cooling. A first heat exchanger, in which engine oil and motor cooling oil exchange heat, and a second heat exchanger, in which a coolant and the motor cooling oil exchange heat, are provided. A second size in vertical and lateral directions of the motor is smaller than a first size in the vertical and lateral directions of each of the engines. The second heat exchanger is attached to an upper portion of a side circumferential portion of the motor, and the first heat exchanger is attached to a lower portion of the side circumferential portion of the motor.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: October 11, 2022
    Assignee: Mazda Motor Corporation
    Inventors: Hiroshi Tanaka, Satoshi Ueno, Hiroshi Kinoshita, Kei Yonemori
  • Patent number: 11427067
    Abstract: To provide a vehicle drive device capable of efficiently driving a vehicle by using in-wheel motors without falling into the vicious cycle between enhancement of driving via the motors and an increase in vehicle weight. The present invention is a vehicle drive device that uses in-wheel motors to drive a vehicle and includes in-wheel motors (20) that are provided in wheels (2b) of a vehicle (1) and drive wheels, in which the in-wheel motors generate the maximum output power in a high revolutions range equal to or more than a predetermined number of revolutions that is more than zero.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: August 30, 2022
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Isao Toda, Seiyo Hirano, Kei Yonemori, Hideki Sanai
  • Publication number: 20220001853
    Abstract: Provided is a vehicle capable of suppressing vibration of a drive unit having an engine and a motor to be small and having high vehicle motion performance. The drive unit for travel of the vehicle includes an engine and a motor. The engine is a rotary engine and has an engine output shaft and an engine housing. The motor has a motor output shaft, a rotor, and a stator that are accommodated in a motor housing. The engine housing of the engine and the motor housing of the motor are directly joined to each other. The engine output shaft and the motor output shaft are directly joined to each other. The rotor of the motor has: a main body section that generates a rotational magnetic field with the stator; and a weight section that functions as a balance weight of the engine.
    Type: Application
    Filed: June 7, 2021
    Publication date: January 6, 2022
    Inventors: Hiroshi Tanaka, Satoshi Ueno, Hiroshi Kinoshita, Kei Yonemori
  • Publication number: 20220001740
    Abstract: To provide a vehicle, vehicle motion performance of which can be made high by downsizing a drive unit having an engine and a motor. A drive unit for vehicle travel has the engine and the motor. The motor is arranged adjacent to a rear side of the engine. In a housing of the motor, parts of oil control valves and motor cooling oil paths, through each of which motor cooling oil flows, are provided. The motor cooling oil flowing through first motor cooling oil paths exchanges heat with engine oil in a first heat exchanger. The motor cooling oil flowing through second motor cooling oil paths exchanges heat with an engine cooling coolant in a second heat exchanger.
    Type: Application
    Filed: June 11, 2021
    Publication date: January 6, 2022
    Inventors: Hiroshi Tanaka, Satoshi Ueno, Kei Yonemori, Wataru Harazawa
  • Publication number: 20220001741
    Abstract: A drive unit has engines and a motor that are adjacent to each other in a longitudinal direction. The engines are provided with an engine oil path and a coolant path for cooling. The motor is provided with a motor cooling oil path for cooling. A first heat exchanger, in which engine oil and motor cooling oil exchange heat, and a second heat exchanger, in which a coolant and the motor cooling oil exchange heat, are provided. A second size in vertical and lateral directions of the motor is smaller than a first size in the vertical and lateral directions of each of the engines. The second heat exchanger is attached to an upper portion of a side circumferential portion of the motor, and the first heat exchanger is attached to a lower portion of the side circumferential portion of the motor.
    Type: Application
    Filed: June 10, 2021
    Publication date: January 6, 2022
    Inventors: Hiroshi Tanaka, Satoshi Ueno, Hiroshi Kinoshita, Kei Yonemori
  • Publication number: 20220003143
    Abstract: In a cooling path of a motor, an oil control valve is provided between a motor cooling oil path and a first motor cooling path, a first heat exchanger is provided in the first motor cooling path, and a second heat exchanger is provided in a second motor cooling path. In a motor-drive mode, a valve control unit switches the oil control valve to the first motor cooling path side when an engine temperature is lower than a first threshold, and switches the oil control valve to the second motor cooling path side when the engine temperature is equal to or higher than the first threshold. In the first heat exchanger, motor cooling oil and engine oil exchange heat. In the second heat exchanger, the motor cooling oil and a coolant for the engine exchange heat.
    Type: Application
    Filed: June 9, 2021
    Publication date: January 6, 2022
    Inventors: Hiroshi Tanaka, Satoshi Ueno, Hiroshi Kinoshita, Kei Yonemori
  • Publication number: 20210379979
    Abstract: A vehicle driving apparatus is provided that includes a drive motor, an internal combustion engine, and an electrical generator and can inhibit a weight balance and motion performance of a vehicle from being deteriorated and lowered. A vehicle driving apparatus driving a vehicle by motive power of a motor, the vehicle driving apparatus including a drive motor that is driven by electric power, an internal combustion engine that produces motive power by fuel, and an electrical generator that is driven by the internal combustion engine, the vehicle driving apparatus being characterized in that the drive motor, the internal combustion engine, and the electrical generator are arranged in a vehicle width direction of the vehicle in order of the drive motor, the internal combustion engine, and the electrical generator.
    Type: Application
    Filed: August 24, 2021
    Publication date: December 9, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Isao TODA, Seiyo HIRANO, Kei YONEMORI, Satoshi MARUYAMA, Shinji FUJIHIRA, Wataru KUWAHARA, Tomoya KAKITE, Yoshiaki NOGUCHI, Ryuichiro AMANO, Mitsuhiro HIROTA
  • Publication number: 20210370906
    Abstract: To provide a vehicle drive device capable of efficiently driving a vehicle by using a motor without falling into the vicious cycle between enhancement of driving via the motor and an increase in vehicle weight. The present invention is a vehicle drive device (10) having a motor for driving the wheels of a vehicle and includes a front wheel motor (20) for driving front wheels (2b) of a vehicle (1) and a battery (18) and a capacitor (22) that supply electric power for driving the front wheel motor (20), in which the voltage of the battery (18) and the capacitor (22) connected in series is applied to the front wheel motor (20) and the capacitor (22) is disposed between the left and right front wheels (2b) of the vehicle (1).
    Type: Application
    Filed: March 19, 2019
    Publication date: December 2, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Isao TODA, Seiyo HIRANO, Kei YONEMORI, Hideki SANAI
  • Publication number: 20210300322
    Abstract: A vehicle drive system uses the in-wheel motor for driving the vehicle and has: an in-wheel motor that is provided in a wheel of a vehicle and drives the wheel; an internal combustion engine that is provided in a vehicle body of the vehicle and drives the wheel; and control equipment that controls the in-wheel motor and the internal combustion engine on the basis of requested output by a driver. The control equipment is configured to cause the internal combustion engine to generate drive power and cause the in-wheel motor not to generate the drive power when the requested output by the driver is lower than specified output. The control equipment is further configured to cause the internal combustion engine and the in-wheel motor to generate the drive power when the requested output by the driver is equal to or higher than the specified output.
    Type: Application
    Filed: July 24, 2019
    Publication date: September 30, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Isao TODA, Seiyo HIRANO, Kei YONEMORI
  • Publication number: 20210300321
    Abstract: A vehicle drive system uses an in-wheel motor and has: a vehicle speed sensor; an in-wheel motor that is provided to a wheel of the vehicle and drives the wheel; an internal combustion engine that is provided in a vehicle body of the vehicle and drives the wheel; and control equipment that controls the in-wheel motor and the internal combustion engine. The control equipment causes the internal combustion engine to generate drive power and causes the in-wheel motor not to generate the drive power when the travel speed of the vehicle detected by the vehicle speed sensor is lower than a specified vehicle speed that is higher than zero. The internal combustion engine and the in-wheel motor generate the drive power in the case where the travel speed of the vehicle detected by the vehicle speed sensor is equal to or higher than the specified vehicle speed.
    Type: Application
    Filed: July 24, 2019
    Publication date: September 30, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Isao TODA, Seiyo HIRANO, Kei YONEMORI
  • Publication number: 20210039509
    Abstract: To provide a vehicle drive device capable of efficiently driving a vehicle by using in-wheel motors without falling into the vicious cycle between enhancement of driving via the motors and an increase in vehicle weight. The present invention is a vehicle drive device that uses in-wheel motors to drive a vehicle and includes in-wheel motors (20) that are provided in wheels (2b) of a vehicle (1) and drive wheels, in which the in-wheel motors generate the maximum output power in a high revolutions range equal to or more than a predetermined number of revolutions that is more than zero.
    Type: Application
    Filed: March 19, 2019
    Publication date: February 11, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Isao TODA, Seiyo HIRANO, Kei YONEMORI, Hideki SANAI
  • Publication number: 20210023935
    Abstract: To provide a vehicle drive device capable of efficiently driving a vehicle by using in-wheel motors without falling into the vicious cycle between enhancement of driving via the motors and an increase in vehicle weight. The present invention is a vehicle drive device that uses in-wheel motors to drive a vehicle and includes a vehicle speed sensor that detects the travel speed of a vehicle, in-wheel motors that are provided in wheels of the vehicle and drive the wheels, and a controller that controls the in-wheel motors, in which the controller controls the in-wheel motors so as to generate driving forces when the travel speed of the vehicle detected by the vehicle speed sensor is equal to or more than a predetermined first vehicle speed that is more than zero.
    Type: Application
    Filed: March 19, 2019
    Publication date: January 28, 2021
    Inventors: Isao TODA, Seiyo HIRANO, Kei YONEMORI, Hideki SANAI
  • Publication number: 20210016653
    Abstract: To provide a vehicle drive device capable of effectively driving a vehicle by using in-wheel motors without falling into the vicious cycle between enhancement of driving via the motors and an increase in vehicle weight. The present invention is a vehicle drive device that uses in-wheel motors to drive a vehicle and includes in-wheel motors (20) that are provided in wheels (2b) of a vehicle (1) and drive the wheels, a body side motor (16) that is provided in a body of the vehicle and drives the wheels of the vehicle, and a battery (18) and a capacitor (22) that supply electric power for driving the in-wheel motors and/or the body side motor, in which a voltage of the battery is applied to the body side motor and a voltage of the battery and the capacitor connected in series is applied to the in-wheel motors.
    Type: Application
    Filed: March 19, 2019
    Publication date: January 21, 2021
    Applicant: Mazda Motor Corporation
    Inventors: Isao TODA, Seiyo HIRANO, Kei YONEMORI, Hideki SANAI