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).
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Patent number: 9517762Abstract: 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: GrantFiled: June 4, 2014Date of Patent: December 13, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi Kawai, Mitsumasa Fukumura, Hiroshi Sugimura, Satoshi Maeda
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Publication number: 20160114789Abstract: 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: ApplicationFiled: June 4, 2014Publication date: April 28, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi KAWAI, Mitsumasa FUKUMURA, Hiroshi SUGIMURA, Satoshi MAEDA
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Patent number: 8577527Abstract: 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: GrantFiled: October 14, 2008Date of Patent: November 5, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventors: Mitsumasa Fukumura, Shoichi Sasaki
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Publication number: 20110190970Abstract: 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: ApplicationFiled: January 11, 2011Publication date: August 4, 2011Applicants: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kazunari MORIYA, Hideo NAKAI, Yuichi OHTERU, Eiji YAMADA, Makoto HIRAI, Toru ANDO, Ryoji MIZUTANI, Kenji KIMURA, Mitsumasa FUKUMURA, Hidehiro OBA
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Publication number: 20110178690Abstract: 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: ApplicationFiled: May 21, 2009Publication date: July 21, 2011Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsumasa Fukumura, Junya Mizuno
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Patent number: 7950485Abstract: 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: GrantFiled: November 6, 2008Date of Patent: May 31, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventor: Mitsumasa Fukumura
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Patent number: 7884574Abstract: 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: GrantFiled: February 22, 2007Date of Patent: February 8, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Mitsumasa Fukumura, Takashi Kawai
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Publication number: 20100174431Abstract: 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: ApplicationFiled: October 14, 2008Publication date: July 8, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsumasa Fukumura, Shoichi Sasaki
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Publication number: 20090120700Abstract: 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: ApplicationFiled: November 6, 2008Publication date: May 14, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Mitsumasa FUKUMURA
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Publication number: 20090015201Abstract: 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: ApplicationFiled: February 22, 2007Publication date: January 15, 2009Applicant: Toyota Jidosha Kabushiki KaishaInventors: Mitsumasa Fukumura, Takashi Kawai