Patents by Inventor Daisuke Itoyama
Daisuke Itoyama 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: 10914255Abstract: A vehicle includes an engine having a particulate matter removal filter to remove particulate matter, in an exhaust system, and a control device to control the engine such that the vehicle travels in a mode selected from a plurality of modes including a first mode in which both fuel efficiency and ride quality are achieved and a second mode in which the engine is operated at a load higher than a predetermined load. When an accumulation quantity of the particulate matter in the particulate matter removal filter is equal to or more than a threshold, the control device notifies a driver that traveling in the second mode is recommended. When the driver selects the second mode in response to the notification, it is possible to restrain an uncomfortable feeling to be given to the driver, even if the engine is operated at a high load for regenerating the filter.Type: GrantFiled: March 23, 2018Date of Patent: February 9, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsuaki Higa, Shinichi Sugai, Daisuke Itoyama, Tsubasa Migita, Mitsuyori Matsumura
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Patent number: 10220829Abstract: A hybrid vehicle includes: an engine configured to output power for traveling; a motor configured to output power for traveling; a switch configured to set a fuel economy priority mode, in which priority is given to fuel economy, and to cancel the fuel economy priority mode; and a controller configured (a) to operate the engine and the motor based on the switch setting; (b) to determine the presence/absence of degradation of fuel supplied to the engine; and (c) to prohibit setting of the fuel economy priority mode by the switch subsequently when determination is made that the fuel has degraded when the hybrid vehicle travels using power of the motor in a state in which the drive of the engine is stopped.Type: GrantFiled: January 5, 2016Date of Patent: March 5, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenji Oonishi, Koji Hokoi, Daisuke Itoyama, Hiroki Endo, Kazuma Aoki, Hideaki Yaguchi, Mikihisa Arai
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Publication number: 20180281779Abstract: A hybrid vehicle includes: an engine; a first motor configured to perform cranking of the engine; a second motor configured to receive or output power for traveling; an electricity storage device configured to supply electricity to the first motor and second motor or to be supplied with electricity from the first motor and the second motor; and an electronic control unit. The electronic control unit is configured to select, at an initiation stage of start-up of the engine, a damping map based on a vehicle speed at the start of cranking of the engine, from among a plurality of damping maps respectively corresponding to vehicle speeds set in advance to reduce vibration during the start-up of the engine. The electronic control unit is configured to control the first motor such that cranking of the engine is performed using the selected damping map until the start-up of the engine is completed.Type: ApplicationFiled: March 30, 2018Publication date: October 4, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke ITOYAMA, Shinichi SUGAI
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Publication number: 20180283301Abstract: A vehicle includes an engine having a particulate matter removal filter to remove particulate matter, in an exhaust system, and a control device to control the engine such that the vehicle travels in a mode selected from a plurality of modes including a first mode in which both fuel efficiency and ride quality are achieved and a second mode in which the engine is operated at a load higher than a predetermined load. When an accumulation quantity of the particulate matter in the particulate matter removal filter is equal to or more than a threshold, the control device notifies a driver that traveling in the second mode is recommended. When the driver selects the second mode in response to the notification, it is possible to restrain an uncomfortable feeling to be given to the driver, even if the engine is operated at a high load for regenerating the filter.Type: ApplicationFiled: March 23, 2018Publication date: October 4, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsuaki HIGA, Shinichi SUGAI, Daisuke ITOYAMA, Tsubasa MIGITA, Mitsuyori MATSUMURA
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Publication number: 20180245492Abstract: A hybrid vehicle includes an engine in which a particulate matter removing filter configured to remove particulate matter is disposed in an exhaust system; a motor configured to receive and output power; a driving circuit configured to drive the motor; an electric power storage device that is connected to the driving circuit; and a control unit configured to control the engine and the driving circuit. The control unit is configured, when a high temperature request for increasing a temperature of the particulate matter removing filter to a prescribed value or higher is issued, to control the driving circuit such that a loss of the driving circuit increases and to control the engine such that power greater than power at a time when the high temperature request is not issued is output from the engine.Type: ApplicationFiled: February 20, 2018Publication date: August 30, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsuaki HIGA, Shinichi SUGAI, Daisuke ITOYAMA, Tsubasa MIGITA, Mitsuyori MATSUMURA
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Patent number: 9988042Abstract: When an output of a braking force to a driving shaft is needed, and a needed braking force can be output by regenerative drive of the second motor, the engine self-sustainably operates, the regenerative drive of the second motor is performed to cause the second motor to output the needed braking force to the driving shaft. When the needed braking force cannot be output by the regenerative drive of the second motor, the needed braking force is output to the driving shaft by the regenerative drive of the second motor and motoring of the engine that performs fuel cut using the first motor. When a filter regeneration condition is established, an allowable input electric power is set to be lower than that of when the filter regeneration condition is not established.Type: GrantFiled: October 30, 2017Date of Patent: June 5, 2018Assignee: Toyota Jidosha Kabushiki KaishaInventors: Mitsuaki Higa, Shinichi Sugai, Daisuke Itoyama, Mitsuyori Matsumura, Tsubasa Migita
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Publication number: 20180126979Abstract: When an output of a braking force to a driving shaft is needed, and a needed braking force can be output by regenerative drive of the second motor, the engine self-sustainably operates, the regenerative drive of the second motor is performed to cause the second motor to output the needed braking force to the driving shaft. When the needed braking force cannot be output by the regenerative drive of the second motor, the needed braking force is output to the driving shaft by the regenerative drive of the second motor and motoring of the engine that performs fuel cut using the first motor. When a filter regeneration condition is established, an allowable input electric power is set to be lower than that of when the filter regeneration condition is not established.Type: ApplicationFiled: October 30, 2017Publication date: May 10, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Mitsuaki HIGA, Shinichi SUGAI, Daisuke ITOYAMA, Mitsuyori MATSUMURA, Tsubasa MIGITA
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Patent number: 9630615Abstract: A hybrid vehicle includes: an engine configured to output power for traveling; a motor configured to output power for traveling; a switch configured to set a fuel economy priority mode, in which priority is given to fuel economy, and to cancel the fuel economy priority mode; and a controller configured (a) to operate the engine and the motor based on the switch setting; (b) to determine the presence/absence of degradation of fuel supplied to the engine; and (c) to prohibit setting of the fuel economy priority mode by the switch subsequently when determination is made that the fuel has degraded when the hybrid vehicle travels using power of the motor in a state in which the drive of the engine is stopped.Type: GrantFiled: March 19, 2014Date of Patent: April 25, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenji Oonishi, Koji Hokoi, Daisuke Itoyama, Hiroki Endo, Kazuma Aoki, Hideaki Yaguchi, Mikihisa Arai
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Publication number: 20160129902Abstract: A hybrid vehicle includes: an engine configured to output power for traveling; a motor configured to output power for traveling; a switch configured to set a fuel economy priority mode, in which priority is given to fuel economy, and to cancel the fuel economy priority mode; and a controller configured (a) to operate the engine and the motor based on the switch setting; (b) to determine the presence/absence of degradation of fuel supplied to the engine; and (c) to prohibit setting of the fuel economy priority mode by the switch subsequently when determination is made that the fuel has degraded when the hybrid vehicle travels using power of the motor in a state in which the drive of the engine is stopped.Type: ApplicationFiled: January 5, 2016Publication date: May 12, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenji OONISHI, Koji HOKOI, Daisuke ITOYAMA, Hiroki ENDO, Kazuma AOKI, Hideaki YAGUCHI, Mikihisa ARAI
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Patent number: 9216730Abstract: An ECU is mounted on a vehicle including an engine and a motor that can generate cranking torque applied to a rotation shaft of the engine. Where a request for starting the engine is not issued, the ECU determines whether the engine is during coasting or not. The ECU changes cranking target torque in accordance with engine rotation speed. In this way, engine rotation speed during cranking can be reduced to and remain in the optimum region where misfire and resonance can be avoided.Type: GrantFiled: October 12, 2012Date of Patent: December 22, 2015Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshimitsu Takahashi, Keisuke Morisaki, Daisuke Itoyama, Hideaki Yaguchi, Shinichi Sugai
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Publication number: 20140288741Abstract: A hybrid vehicle includes: an engine configured to output power for traveling; a motor configured to output power for traveling; a switch configured to set a fuel economy priority mode, in which priority is given to fuel economy, and to cancel the fuel economy priority mode; and a controller configured (a) to operate the engine and the motor based on the switch setting; (b) to determine the presence/absence of degradation of fuel supplied to the engine; and (c) to prohibit setting of the fuel economy priority mode by the switch subsequently when determination is made that the fuel has degraded when the hybrid vehicle travels using power of the motor in a state in which the drive of the engine is stopped.Type: ApplicationFiled: March 19, 2014Publication date: September 25, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenji OONISHI, Koji HOKOI, Daisuke ITOYAMA, Hiroki ENDO, Kazuma AOKI, Hideaki YAGUCHI, Mikihisa ARAI
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Publication number: 20140288740Abstract: A control apparatus for a hybrid vehicle includes an engine for traveling, a motor for traveling, and a battery exchanging electric power with the motor. the control apparatus including: a heater is configured to perform heating inside a cabin of the hybrid vehicle by using the engine or an electric heat source as a heat source; and a controller is configured to operate the engine intermittently, the controller is configured to select the heat source for the heater, the controller is configured to determine whether or not a fuel for the engine is degraded when the engine is stopped, and the controller is configured to start the engine and select the engine as the heat source when the controller determines that the fuel is degraded.Type: ApplicationFiled: March 19, 2014Publication date: September 25, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Daisuke ITOYAMA, Hideaki YAGUCHI, Koji HOKOI, Kenji OONISHI, Hiroki ENDO, Kazuma AOKI, Mikihisa ARAI
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Patent number: 8718851Abstract: First output power is set in accordance with operation by a driver. In addition, second output power greater than the first output power is set. A hybrid vehicle is controlled so that an engine is driven in accordance with the second output power. The hybrid vehicle is controlled so that the engine is stopped when the first output power is equal to or smaller than an engine stop threshold value.Type: GrantFiled: June 10, 2010Date of Patent: May 6, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventors: Yusuke Kamijo, Hideaki Yaguchi, Daisuke Itoyama, Keisuke Morisaki
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Publication number: 20140107878Abstract: An ECU is mounted on a vehicle including an engine and a motor that can generate cranking torque applied to a rotation shaft of the engine. Where a request for starting the engine is not issued, the ECU determines whether the engine is during coasting or not. The ECU changes cranking target torque in accordance with engine rotation speed. In this way, engine rotation speed during cranking can be reduced to and remain in the optimum region where misfire and resonance can be avoided.Type: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yoshimitsu Takahashi, Keisuke Morisaki, Daisuke Itoyama, Hideaki Yaguchi, Shinichi Sugai
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Publication number: 20130079969Abstract: First output power is set in accordance with operation by a driver. In addition, second output power greater than the first output power is set. A hybrid vehicle is controlled so that an engine is driven in accordance with the second output power. The hybrid vehicle is controlled so that the engine is stopped when the first output power is equal to or smaller than an engine stop threshold value.Type: ApplicationFiled: June 10, 2010Publication date: March 28, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yusuke Kamijo, Hideaki Yaguchi, Daisuke Itoyama, Keisuke Morisaki