Patents by Inventor Tomoyuki Hanyu

Tomoyuki Hanyu 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: 6614137
    Abstract: Leakage of magnetic fluxes passing through the gaps between the magnetic pole teeth of an armature is reduced thereby to reduce a magnetic attraction force between the armature and a mover. A linear motor includes a first member and a second member. The first member is configured with at least a magnetic pole of a first polarity having a first opposed portion and a magnetic pole of a second polarity having a second opposed portion. The second member is held by the first opposed portion, while the second member is held by the second opposed portion and moves relatively. The first member is formed of an iron core and a winding, and the second member is formed of a permanent magnet, a magnetic material, a winding of a single type or a combination of a plurality of types of materials.
    Type: Grant
    Filed: February 26, 2001
    Date of Patent: September 2, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Kim Houng Joong, Kohji Maki, Yoshitaka Iwaji, Taizou Miyazaki, Tomoyuki Hanyu
  • Patent number: 6577022
    Abstract: A hybrid drive type vehicle having a permanent magnet type synchronous motor can provide high torque characteristics in low revolution speed range of the engine and high power generation characteristics at high revolution speed range of the engine. The hybrid drive type vehicle includes an electric rotary machine being formed with a stator and a rotor. A field magnet of the rotor include a first field magnet and a second field magnet. The first and second field magnets are opposing with a magnetic pole of the stator and having a mechanism for varying a phase of a magnetic pole resulting from combination of the first and second field magnets relative to the magnetic pole of the first field magnet depending upon direction of a torque of the rotor.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: June 10, 2003
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Kim Houng Joong, Kazuo Tahara, Kou Ajima, Koki Ueta, Toshiyuki Innami, Noriaki Hino, Taizo Miyazaki, Tomoyuki Hanyu, Kousaku Ohno
  • Publication number: 20030102674
    Abstract: A hybrid drive type vehicle having a permanent magnet type synchronous motor can provide high torque characteristics in low revolution speed range of the engine and high power generation characteristics at high revolution speed range of the engine. The hybrid drive type vehicle includes an electric rotary machine being formed with a stator and a rotor. A field magnet of the rotor include a first field magnet and a second field magnet. The first and second field magnets are opposing with a magnetic pole of the stator and having a mechanism for varying a phase of a magnetic pole resulting from combination of the first and second field magnets relative to the magnetic pole of the first field magnet depending upon direction of a torque of the rotor.
    Type: Application
    Filed: January 23, 2003
    Publication date: June 5, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Kim Houng Joong, Kazuo Tahara, Kou Ajima, Koki Ueta, Toshiyuki Innami, Noriaki Hino, Taizo Miyazaki, Tomoyuki Hanyu, Kousaku Ohno
  • Patent number: 6545372
    Abstract: The present invention provides a hybrid motor comprising an engine comprising a plurality of intake valves and an auxiliary power plant in communication with the engine and a throttle valve for controlling a quantity of air into the engine wherein during operation by the auxiliary power plant the throttle valve is open and the intake valves are opened by the valve control unit.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: April 8, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Tomoyuki Hanyu, Masahiko Amano, Toshio Manaka, Taizou Miyazaki, Yasuo Morooka
  • Publication number: 20030059320
    Abstract: A fluid transfer apparatus utilizes a linear motor including a movable element in which magnetic poles are provided at a predetermined pitch along a moving direction, magnetic pole teeth provided in upper and lower portions of the movable element at a predetermined pitch along a moving direction of the movable element and so as to oppose to each other via the movable element, and a coil, wherein adjacent magnetic pole teeth and opposing magnetic pole teeth among the magnetic pole teeth form different poles.
    Type: Application
    Filed: February 26, 2001
    Publication date: March 27, 2003
    Inventors: Houng Joong Kim, Kohji Maki, Taizou Miyazaki, Tomoyuki Hanyu, Ryouichi Naganuma
  • Patent number: 6507127
    Abstract: An altitude calculation unit 44 estimates an inclination of a road from vehicle speed and vehicle drive torque, and calculates altitude of a vehicle. A battery management unit 43 calculate difference between average altitude determined from the past altitude history and the present altitude and varies a target value of battery charging rate or upper and lower limit values thereof in response to the difference. Charging and discharging command value is calculated in response to difference between charging rate detection value and the target value or the upper and lower limit values. An integrated control unit 22 sets output share between an engine and a motor based on vehicle target drive torque calculated by a target toque determination unit 21 and charging and discharging command from the battery management unit 43, determines an optimum operation point of the engine and issues a control command to the engine and the motor.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: January 14, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Amano, Ryoso Masaki, Taizo Miyazaki, Tomoyuki Hanyu
  • Publication number: 20020158513
    Abstract: Power supply equipment for a motor vehicle, comprising a motor generator, an inverter for driving said motor generator, a battery and a capacitor of an electrical double layer, wherein the capacitor is directly connected to a DC side of the inverter and the battery is connected in parallel with the capacitor via a first switching unit. When an engine is started up, the power stored in the capacitor is used, and the switching units are turned off to separate the battery from the start-up of the engine.
    Type: Application
    Filed: August 30, 2001
    Publication date: October 31, 2002
    Applicant: Hitachi, Ltd.
    Inventors: Masahiko Amano, Yasuo Morooka, Taizo Miyazaki, Tomoyuki Hanyu
  • Patent number: 6470983
    Abstract: A hybrid vehicle is disclosed, in which the drive torque is controlled according to a target, and the engine operating point and the battery charging rate are controlled thereby as targeted to improve the fuel consumption rate of the hybrid vehicle as a whole. An engine torque estimating unit 41 estimates the engine torque based on the motor current, and an engine output correction unit 42 calculates a correct value of the throttle opening based on the difference between the estimated value and the target value. The battery management unit 43, on the other hand, calculates a target battery charge/discharge rate based on the navigation information and the battery charging rate. The engine output correction unit 44 calculates and outputs the correction value of the target battery charge/discharge value based on the difference between the target battery charge/discharge current and the actual current.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: October 29, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Masahiko Amano, Ryoso Masaki, Taizo Miyazaki, Tomoyuki Hanyu
  • Patent number: 6462430
    Abstract: A hybrid drive type vehicle having a permanent magnet type synchronous motor can provide high torque characteristics in low revolution speed range of the engine and high power generation characteristics at high revolution speed range of the engine. The hybrid drive type vehicle includes an electric rotary machine being formed with a stator and a rotor. A field magnet of the rotor include a first field magnet and a second field magnet. The first and second field magnets are opposing with a magnetic pole of the stator and having a mechanism for varying a phase of a magnetic pole resulting from combination of the first and second field magnets relative to the magnetic pole of the first field magnet depending upon direction of a torque of the rotor.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: October 8, 2002
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Kim Houng Joong, Kazuo Tahara, Kou Ajima, Koki Ueta, Toshiyuki Innami, Noriaki Hino, Taizo Miyazaki, Tomoyuki Hanyu, Kousaku Ohno
  • Publication number: 20020123407
    Abstract: The present invention provides a driving apparatus for a vehicle comprising an engine for providing a primary driving force to a driving shaft and an auxiliary power plant connected with the engine through a transmission the transmission comprising an input shaft for inputting the primary driving force from the engine and an output shaft connected to the input shaft for transmitting the primary driving force to the driving shaft wherein the auxiliary power plant provides a secondary driving force to the driving shaft during a shifting in speed.
    Type: Application
    Filed: August 31, 2001
    Publication date: September 5, 2002
    Inventors: Tomoyuki Hanyu, Masahiko Amano, Masahiko Ibamoto, Toshimichi Minowa, Yasuo Morooka
  • Publication number: 20020117858
    Abstract: The present invention provides a hybrid motor comprising an engine comprising a plurality of intake valves and an auxiliary power plant in communication with the engine and a throttle valve for controlling a quantity of air into the engine wherein during operation by the auxiliary power plant the throttle valve is open and the intake valves are opened by the valve control unit.
    Type: Application
    Filed: September 7, 2001
    Publication date: August 29, 2002
    Inventors: Tomoyuki Hanyu, Masahiko Amano, Toshio Manaka, Taizou Miyazaki, Yasuo Morooka
  • Publication number: 20020100624
    Abstract: A hybrid drive type vehicle having a permanent magnet type synchronous motor can provide high torque characteristics in low revolution speed range of the engine and high power generation characteristics at high revolution speed range of the engine. The hybrid drive type vehicle includes an electric rotary machine being formed with a stator and a rotor. A field magnet of the rotor include a first field magnet and a second field magnet. The first and second field magnets are opposing with a magnetic pole of the stator and having a mechanism for varying a phase of a magnetic pole resulting from combination of the first and second field magnets relative to the magnetic pole of the first field magnet depending upon direction of a torque of the rotor.
    Type: Application
    Filed: March 21, 2002
    Publication date: August 1, 2002
    Applicant: Hitachi, Ltd. and Hitachi Car Engineering Co., Ltd
    Inventors: Kim Houng Joong, Kazuo Tahara, Kou Ajima, Koki Ueta, Toshiyuki Innami, Noriaki Hino, Taizo Miyazaki, Tomoyuki Hanyu, Kousaku Ohno
  • Publication number: 20020043879
    Abstract: Leakage of magnetic fluxes passing through the gaps between the magnetic pole teeth of an armature is reduced thereby to reduce a magnetic attraction force between the armature and a mover. A linear motor includes a first member and a second member. The first member is configured with at least a magnetic pole of a first polarity having a first opposed portion and a magnetic pole of a second polarity having a second opposed portion. The second member is held by the first opposed portion, while the second member is held by the second opposed portion and moves relatively. The first member is formed of an iron core and a winding, and the second member is formed of a permanent magnet, a magnetic material, a winding of a single type or a combination of a plurality of types of materials.
    Type: Application
    Filed: February 26, 2001
    Publication date: April 18, 2002
    Inventors: Kim Houng Joong, Kohji Maki, Yoshitaka Iwaji, Taizou Miyazaki, Tomoyuki Hanyu
  • Publication number: 20020036106
    Abstract: In a driving system comprising an engine, a plurality of motor-generators and a plurality of coaxial differential mechanisms, rotating output axes of the plurality of motor-generators are disposed parallel to and opposite to a rotating output axis of the engine. The coaxial differential mechanisms are arranged between the engine and the motors. The coaxial differential mechanisms are disposed so that straight lines passing through rotating axes of at least two of the coaxial differential mechanisms are parallel to each other, and the output power of the engine is transmitted to the coaxial differential mechanisms through gears. It is possible to provide a small sized and high productive driving system.
    Type: Application
    Filed: December 6, 2001
    Publication date: March 28, 2002
    Inventors: Tomoyuki Hanyu, Ryoso Masaki, Masahiko Amano, Taizo Miyazaki, Yasuo Morooka
  • Patent number: 6360625
    Abstract: The invention provides a power transmission apparatus having a reduced power transmission loss. In the power transmission apparatus, an input shaft side variable pitch circle gear, an output shaft side variable pitch circle gear and a cycloid sliding gear which have a shape accumulated by a cycloid gear in which a pitch circle continuously changes are meshed with each other. The cycloid sliding gear slides and an engagement position thereof changes, thereby changing a radius of an engagement pitch circle of the gear so as to change a shift ratio.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: March 26, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Taizo Miyazaki, Toshimichi Minowa, Tomoyuki Hanyu, Ryoso Masaki, Yasuo Morooka
  • Publication number: 20010017227
    Abstract: A hybrid vehicle is disclosed, in which the drive torque is controlled according to a target, and the engine operating point and the battery charging rate are controlled thereby as targeted to improve the fuel consumption rate of the hybrid vehicle as a whole An engine torque estimating unit estimates the engine torque based on the motor current, and an engine output correction unit.
    Type: Application
    Filed: May 8, 2001
    Publication date: August 30, 2001
    Inventors: Masahiko Amano, Ryoso Masaki, Taizo Miyazaki, Tomoyuki Hanyu
  • Patent number: 6258006
    Abstract: Disclosed is a transmission comprising a first power transfer path for transferring an output of an engine to a vehicle driving shaft through a planetary gear connected to a motor, a second power transfer path for transferring the output of the engine to the vehicle driving shaft through gears and, and a power transfer switch which switches over the first and second power transfer paths from one to the other. In a hybrid vehicle wherein an engine, a motor and a generator are connected to a planetary gear, a follow-up loss caused by the generator is avoided in the case where the engine stops and the vehicle travels with the motor alone. In high-speed running, it is avoided that an electric energy for stopping the rotation of the generator is consumed. Further, torque assist by the generator is not restricted by constraints of the planetary gear.
    Type: Grant
    Filed: February 4, 2000
    Date of Patent: July 10, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Tomoyuki Hanyu, Hiroshi Sakamoto, Toshimichi Minowa, Taizo Miyazaki, Ryoso Masaki