Patents by Inventor Hiroaki Kioka

Hiroaki Kioka 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: 8793045
    Abstract: A hybrid drive device includes a speed change mechanism, a motor drivingly coupled to an input shaft, and a clutch interposed between an engine and an input shaft. Upon engine start during engine traveling, the clutch is engaged, and rotation of the engine is increased. A control device of the hybrid drive device includes start upshift control means that, according to the engagement control of the clutch upon engine start, upshifts the speed change mechanism to output inertia torque. Thus, when the engine is started, output torque as the sum of driving torque of the motor and the inertia torque is output to the driving wheel, which reduces hesitation upon engine start.
    Type: Grant
    Filed: February 29, 2012
    Date of Patent: July 29, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Yosuke Ueda, Yoshinori Ono, Masaki Nomura, Wataru Shiraishi, Hiroaki Kioka
  • Patent number: 8712613
    Abstract: A control device controlling a hybrid vehicle drive apparatus that includes an internal combustion engine, a rotary electric machine drivingly connected to a wheel and a clutch selectively drivingly connecting the internal combustion engine with the rotary electric machine. The control device performs control such that, when a start request of the internal combustion engine is issued in the state in which the clutch is released and combustion of the internal combustion engine is stopped, a rotational speed of the internal combustion engine is raised to a rotational speed of the rotary electric machine by transmitting driving torque of the rotary electric machine to the internal combustion engine by increasing a torque transfer capacity of the clutch, and, after the rotational speed of the internal combustion engine is synchronized with the rotational speed of the rotary electric machine, the combustion of the internal combustion engine is started.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: April 29, 2014
    Assignee: Aisin AW Co., Ltd.
    Inventors: Takashi Yoshida, Yomei Hakumura, Saoto Tsuchiya, Hiroaki Kioka
  • Publication number: 20130304296
    Abstract: A hybrid drive device includes a speed change mechanism, a motor drivingly coupled to an input shaft, and a clutch interposed between an engine and an input shaft. Upon engine start during engine traveling, the clutch is engaged, and rotation of the engine is increased. A control device of the hybrid drive device includes start upshift control means that, according to the engagement control of the clutch upon engine start, upshifts the speed change mechanism to output inertia torque. Thus, when the engine is started, output torque as the sum of driving torque of the motor and the inertia torque is output to the driving wheel, which reduces hesitation upon engine start.
    Type: Application
    Filed: February 29, 2012
    Publication date: November 14, 2013
    Applicant: AISIN AW CO., LTD.
    Inventors: Yosuke Ueda, Yoshinori Ono, Masaki Nomura, Wataru Shiraishi, Hiroaki Kioka
  • Patent number: 8386140
    Abstract: A control device controls an input coupled to a drive force source including a rotary electric machine and an internal combustion engine, an output coupled to wheels, and a speed change mechanism that transfers rotation of the input to the output with a speed of the rotation changed in accordance with a speed ratio of a shift speed selected from a plurality of shift speeds. When switching between the shift speeds, a rotation-varying torque value is calculated, the rotary electric machine outputs torque based on the rotation-varying torque value, and when an absolute value of the torque that the rotary electric machine outputs will become more than a predetermined threshold, both the rotary electric machine and the internal combustion engine are caused to output torque corresponding to the rotation-varying torque value such that the output torque of the rotary electric machine becomes equal to or less than the predetermined threshold.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: February 26, 2013
    Assignee: Aisin AW Co., Ltd.
    Inventors: Kohei Tsuda, Yoichi Tajima, Yomei Hakumura, Hiroaki Kioka
  • Patent number: 8269446
    Abstract: When an electric vehicle outputs a torque instruction, firstly, a request torque is acquired and a judged whether the acquired request torque is positive or negative. Regardless of the sign of the request torque, it is judged whether the eco-switch is ON. If the request torque has a positive sign and the eco-switch is OFF, a map A is selected. If the eco-switch is ON, a map B which limits the maximum torque to a low value for the map A is selected. If the request torque has a negative sign, a map C is selected regardless of the eco-switch ON/OFF state and the maximum torque is not limited.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: September 18, 2012
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin AW Co., Ltd.
    Inventors: Masayoshi Suhama, Hideto Hanada, Masaki Okamura, Hiroaki Kioka, Ken Iwatsuki
  • Publication number: 20120232732
    Abstract: A control device controls an input coupled to a drive force source including a rotary electric machine and an internal combustion engine, an output coupled to wheels, and a speed change mechanism that transfers rotation of the input to the output with a speed of the rotation changed in accordance with a speed ratio of a shift speed selected from a plurality of shift speeds. When switching between the shift speeds, a rotation-varying torque value is calculated, the rotary electric machine outputs torque based on the rotation-varying torque value, and when an absolute value of the torque that the rotary electric machine outputs will become more than a predetermined threshold, both the rotary electric machine and the internal combustion engine are caused to output torque corresponding to the rotation-varying torque value such that the output torque of the rotary electric machine becomes equal to or less than the predetermined threshold.
    Type: Application
    Filed: January 13, 2012
    Publication date: September 13, 2012
    Applicant: AISIN AW CO., LTD.
    Inventors: Kohei TSUDA, Yoichi TAJIMA, Yomei HAKUMURA, Hiroaki KIOKA
  • Publication number: 20110282530
    Abstract: When an electric vehicle outputs a torque instruction, firstly, a request torque is acquired and a judged whether the acquired request torque is positive or negative. Regardless of the sign of the request torque, it is judged whether the eco-switch is ON. If the request torque has a positive sign and the eco-switch is OFF, a map A is selected. If the eco-switch is ON, a map B which limits the maximum torque to a low value for the map A is selected. If the request torque has a negative sign, a map C is selected regardless of the eco-switch ON/OFF state and the maximum torque is not limited.
    Type: Application
    Filed: June 30, 2011
    Publication date: November 17, 2011
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masayoshi Suhama, Hideto Hanada, Masaki Okamura, Hiroaki Kioka, Ken Iwatsuki
  • Publication number: 20110246008
    Abstract: A control device controlling a hybrid vehicle drive apparatus that includes an internal combustion engine, a rotary electric machine drivingly connected to a wheel and a clutch selectively drivingly connecting the internal combustion engine with the rotary electric machine. The control device performs control such that, when a start request of the internal combustion engine is issued in the state in which the clutch is released and combustion of the internal combustion engine is stopped, a rotational speed of the internal combustion engine is raised to a rotational speed of the rotary electric machine by transmitting driving torque of the rotary electric machine to the internal combustion engine by increasing a torque transfer capacity of the clutch, and, after the rotational speed of the internal combustion engine is synchronized with the rotational speed of the rotary electric machine, the combustion of the internal combustion engine is started.
    Type: Application
    Filed: March 10, 2011
    Publication date: October 6, 2011
    Applicant: AISIN AW CO., LTD.
    Inventors: Takashi YOSHIDA, Yomei HAKUMURA, Saoto TSUCHIYA, Hiroaki KIOKA
  • Publication number: 20110232980
    Abstract: A control device of a hybrid vehicle, configured with an engine; a motor that rotates together with the engine at least during traveling by using a driving force of the engine, and a speed change mechanism that shifts rotation of the engine and the motor to transmit the shifted rotation to a driving wheel. A zero torque control unit controls output torque of the motor to zero torque when a rotational speed of the motor reaches a predetermined rotation speed or more by driving rotation of the engine, and a motor temperature detection unit that detects a temperature of the motor. A motor protection control units that reduces a rotational speed of the engine when the temperature of the motor reaches an upper threshold value or more while the motor is being rotated at the predetermined rotational speed or more by the driving rotation of the engine.
    Type: Application
    Filed: February 2, 2011
    Publication date: September 29, 2011
    Applicant: AISIN AW CO., LTD.
    Inventors: Masaki NOMURA, Hiroaki KIOKA, Ken TAKEDA, Shintaro CHINEN
  • Patent number: 7973505
    Abstract: When an electric vehicle outputs a torque instruction, firstly, a request torque is acquired and a judged whether the acquired request torque is positive or negative (S10) Regardless of the sign of the request torque, it is judged whether the eco-switch is ON (S12, S14) If the request torque has a positive sign and the eco-switch is OFF, a map A is selected (S20). If the eco-switch is ON, a map B which limits the maximum torque to a low value for the map A is selected (S22). If the request torque has a negative sign, a map C is selected regardless of the eco-switch ON/OFF state and the maximum torque is not limited (S24).
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: July 5, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Aisin Aw Co., Ltd.
    Inventors: Masayoshi Suhama, Hideto Hanada, Masaki Okamura, Hiroaki Kioka, Ken Iwatsuki
  • Publication number: 20100045224
    Abstract: When an electric vehicle outputs a torque instruction, firstly, a request torque is acquired and a judged whether the acquired request torque is positive or negative (S10) Regardless of the sign of the request torque, it is judged whether the eco-switch is ON (S12, S14) If the request torque has a positive sign and the eco-switch is OFF, a map A is selected (S20). If the eco-switch is ON, a map B which limits the maximum torque to a low value for the map A is selected (S22). If the request torque has a negative sign, a map C is selected regardless of the eco-switch ON/OFF state and the maximum torque is not limited (S24).
    Type: Application
    Filed: January 31, 2008
    Publication date: February 25, 2010
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, AISIN AW CO., LTD
    Inventors: Masayoshi Suhama, Hideto Hanada, Masaki Okamura, Hiroaki Kioka, Ken Iwatsuki