Patents by Inventor Mitsumasa Fukumura

Mitsumasa Fukumura 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: 9517762
    Abstract: A control apparatus of the invention is applied to a three-cylinder internal combustion engine that is mounted in a vehicle and in which a first MG is connected to a crankshaft in a manner capable of transmitting power. When stopping the internal combustion engine, a vehicle control unit controls output torque of the first MG such that the internal combustion engine is stopped in a state where a preset particular cylinder is in a compression stroke.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: December 13, 2016
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi Kawai, Mitsumasa Fukumura, Hiroshi Sugimura, Satoshi Maeda
  • Publication number: 20160114789
    Abstract: A control apparatus of the invention is applied to a three-cylinder internal combustion engine that is mounted in a vehicle and in which a first MG is connected to a crankshaft in a manner capable of transmitting power. When stopping the internal combustion engine, a vehicle control unit controls output torque of the first MG such that the internal combustion engine is stopped in a state where a preset particular cylinder is in a compression stroke.
    Type: Application
    Filed: June 4, 2014
    Publication date: April 28, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takashi KAWAI, Mitsumasa FUKUMURA, Hiroshi SUGIMURA, Satoshi MAEDA
  • Patent number: 8577527
    Abstract: A drive control device which estimates an engine torque during traveling in a fixed gear ratio mode is disclosed. The drive control device includes the engagement mechanism including the revolution component revolved by the torque of the engine and the fixed component that engages with the revolution component, the torque applying unit which applies torque to the revolution component and the first transmitting control unit which engages the engagement mechanism to make the engagement mechanism receive the reaction force of the torque. The torque estimating control unit executes control of torque applied to the revolution component by the torque applying unit during executing the control by the first transmitting control unit to detect the phase change between the revolution component and the fixed component and estimates the torque of the engine based on the phase change and torque applied by the torque applying unit.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: November 5, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mitsumasa Fukumura, Shoichi Sasaki
  • Publication number: 20110190970
    Abstract: A structure for controlling an engine is simplified in a power generation device equipped on a vehicle which generates power by a driving force of an engine. An operation unit (32) outputs to a controller (12) drive operation information based on an operation of a user. The controller (12) controls a vehicle driving circuit (28) and determines an engine output power target value based on the drive operation information and a running state of the vehicle. An engine output power/control voltage table stored in a storage unit (34) is referred to, and a value of a control voltage (Va) correlated to the engine output power target value is determined. The controller (12) controls a voltage adjusting circuit (24) such that the control voltage (Va) is set to the value determined based on the engine output power/control voltage table.
    Type: Application
    Filed: January 11, 2011
    Publication date: August 4, 2011
    Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazunari MORIYA, Hideo NAKAI, Yuichi OHTERU, Eiji YAMADA, Makoto HIRAI, Toru ANDO, Ryoji MIZUTANI, Kenji KIMURA, Mitsumasa FUKUMURA, Hidehiro OBA
  • Publication number: 20110178690
    Abstract: The variation estimating device of object is preferably used for estimating the variation of the object with respect to the time axis. The first estimating unit estimates the variation of the object behind the actual variation of the object, and the second estimating unit estimates the variation of the object before the actual variation of the object. Then, the correcting unit performs the correction of one of the first estimating unit and the second estimating unit based on the other, so as to calculate the variation of the object, when the object varies. Therefore, it becomes possible to improve the estimation accuracy of the variation of the object.
    Type: Application
    Filed: May 21, 2009
    Publication date: July 21, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mitsumasa Fukumura, Junya Mizuno
  • Patent number: 7950485
    Abstract: The control device for the hybrid vehicle is mounted on the hybrid vehicle including the engine and the motor generator as the driving source and capable of switching at least two modes, i.e., the infinite variable speed mode and the fixed gear ratio mode. When the speed change is performed from the infinite variable speed mode to the fixed gear ratio mode, the first speed change control to maintain the number of revolutions equal to or larger than the number of engine revolutions at the time of setting the infinite variable speed mode and reduce the engine torque to shift the speed gear in the fixed gear ratio mode is executed. Thereby, when the speed change is performed from the infinite variable speed mode to the fixed gear ratio mode, it becomes possible to appropriately suppress the drivability deterioration caused due to the change of the number of engine revolutions.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: May 31, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Mitsumasa Fukumura
  • Patent number: 7884574
    Abstract: An HV-ECU executes refresh-discharging of a battery before the battery is charged from a commercial power source using an AC/DC converter. After the battery is refresh-discharged, the HV-ECU outputs a control signal to the AC/DC converter such that the battery is charged from the commercial power source by the drive of the AC/DC converter.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: February 8, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mitsumasa Fukumura, Takashi Kawai
  • Publication number: 20100174431
    Abstract: There is provided a drive control device for a vehicle capable of estimating an engine torque with high accuracy during traveling in a fixed gear ratio mode. The drive control device includes the engagement mechanism including the revolution component that is revolved by the torque of the internal combustion engine and the fixed component that engages with the revolution component, the torque applying unit which applies the torque to the revolution component and the first transmitting control unit which engages the engagement mechanism to make the engagement mechanism receive the reaction force of the torque of the internal combustion engine.
    Type: Application
    Filed: October 14, 2008
    Publication date: July 8, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Mitsumasa Fukumura, Shoichi Sasaki
  • Publication number: 20090120700
    Abstract: The control device for the hybrid vehicle is mounted on the hybrid vehicle including the engine and the motor generator as the driving source and capable of switching at least two modes, i.e., the infinite variable speed mode and the fixed gear ratio mode. When the speed change is performed from the infinite variable speed mode to the fixed gear ratio mode, the first speed change control to maintain the number of revolutions equal to or larger than the number of engine revolutions at the time of setting the infinite variable speed mode and reduce the engine torque to shift the speed gear in the fixed gear ratio mode is executed. Thereby, when the speed change is performed from the infinite variable speed mode to the fixed gear ratio mode, it becomes possible to appropriately suppress the drivability deterioration caused due to the change of the number of engine revolutions.
    Type: Application
    Filed: November 6, 2008
    Publication date: May 14, 2009
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Mitsumasa FUKUMURA
  • Publication number: 20090015201
    Abstract: An HV-ECU executes refresh-discharging of a battery before the battery is charged from a commercial power source using an AC/DC converter. After the battery is refresh-discharged, the HV-ECU outputs a control signal to the AC/DC converter such that the battery is charged from the commercial power source by the drive of the AC/DC converter.
    Type: Application
    Filed: February 22, 2007
    Publication date: January 15, 2009
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Mitsumasa Fukumura, Takashi Kawai