Patents by Inventor Mitsuru Oba

Mitsuru Oba 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: 8738209
    Abstract: It is provided a control device of a vehicle drive apparatus in a vehicle including an electric motor for driving drive wheels, the control device controlling an output torque of the electric motor in accordance with a predetermined electric motor torque control characteristic making the output torque of the electric motor larger when a requested drive force is greater such that a drive force of the vehicle becomes equal to the requested drive force requested by a driver, wherein when the stopped vehicle is started, if the requested drive force is equal to or less than a requested drive force judgment value set equal to or less than a necessary start-up drive force necessary for start-up of the vehicle, the control device provides electric motor torque suppression control suppressing the output torque of the electric motor below an output torque determined from the electric motor torque control characteristic.
    Type: Grant
    Filed: January 30, 2010
    Date of Patent: May 27, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mitsuru Oba, Yoshisuke Kametani
  • Patent number: 8556773
    Abstract: Providing a control apparatus for a vehicular drive system, which permits economical and easy reduction of generation of an abnormal sound upon starting of an engine in a running state of a vehicle. The control apparatus includes on-engine-starting differential limiting means for commanding a differential limiting clutch to limit differential rotary motion between front and rear drive wheels, in advance of automatic starting of an engine under the control of automatic engine starting control means. Accordingly, the limitation of the differential rotary motion between the front and the rear drive wheels by the differential limiting clutch ensures the starting of the engine without backlash which exists in the power transmitting path between the engine and the front and rear drive wheels, thereby permitting economical and easy reduction of generation of the abnormal sound upon starting of the engine in a running state of the vehicle.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: October 15, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Mitsuru Oba
  • Publication number: 20120303199
    Abstract: It is provided a control device of a vehicle drive apparatus in a vehicle including an electric motor for driving drive wheels, the control device controlling an output torque of the electric motor in accordance with a predetermined electric motor torque control characteristic making the output torque of the electric motor larger when a requested drive force is greater such that a drive force of the vehicle becomes equal to the requested drive force requested by a driver, wherein when the stopped vehicle is started, if the requested drive force is equal to or less than a requested drive force judgment value set equal to or less than a necessary start-up drive force necessary for start-up of the vehicle, the control device provides electric motor torque suppression control suppressing the output torque of the electric motor below an output torque determined from the electric motor torque control characteristic.
    Type: Application
    Filed: January 30, 2010
    Publication date: November 29, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mitsuru Oba, Yoshisuke Kametani
  • Publication number: 20120190499
    Abstract: Providing a control apparatus for a vehicular drive system, which permits economical and easy reduction of generation of an abnormal sound upon starting of an engine in a running state of a vehicle. The control apparatus includes on-engine-starting differential limiting means for commanding a differential limiting clutch to limit differential rotary motion between front and rear drive wheels, in advance of automatic starting of an engine under the control of automatic engine starting control means. Accordingly, the limitation of the differential rotary motion between the front and the rear drive wheels by the differential limiting clutch ensures the starting of the engine without backlash which exists in the power transmitting path between the engine and the front and rear drive wheels, thereby permitting economical and easy reduction of generation of the abnormal sound upon starting of the engine in a running state of the vehicle.
    Type: Application
    Filed: October 5, 2009
    Publication date: July 26, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Mitsuru Oba