Patents by Inventor Kentaro Onuma
Kentaro Onuma 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: 10882513Abstract: A hybrid vehicle is provided. A vehicle V has a gasoline particulate filter (GPF) provided on an exhaust passage to capture particulate matter (PM) included in exhaust, a generator motor connected to a crank shaft of an engine, an exhaust temperature sensor acquiring a filter temperature correlated with a temperature of the GPF, and an electronic control unit (ECU) performing motor drive control for rotating the crank shaft with the generator motor when a filter temperature is higher than or equal to a PM combustion start temperature and a PM combustion integration amount that is an integration amount of PM combusted in the GPF is less than a PM discharge integration amount.Type: GrantFiled: July 22, 2019Date of Patent: January 5, 2021Assignee: Honda Motor Co., Ltd.Inventors: Kentaro Onuma, Hisashi Ito, Hidenori Sakai
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Publication number: 20200031333Abstract: A hybrid vehicle is provided. A vehicle V has a gasoline particulate filter (GPF) provided on an exhaust passage to capture particulate matter (PM) included in exhaust, a generator motor connected to a crank shaft of an engine, an exhaust temperature sensor acquiring a filter temperature correlated with a temperature of the GPF, and an electronic control unit (ECU) performing motor drive control for rotating the crank shaft with the generator motor when a filter temperature is higher than or equal to a PM combustion start temperature and a PM combustion integration amount that is an integration amount of PM combusted in the GPF is less than a PM discharge integration amount.Type: ApplicationFiled: July 22, 2019Publication date: January 30, 2020Applicant: Honda Motor Co.,Ltd.Inventors: Kentaro ONUMA, Hisashi ITO, Hidenori SAKAI
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Patent number: 10514015Abstract: A control device of an internal combustion engine is provided. In the case where a switch request for switching from all-cylinder operation to partial-cylinder operation is made, before a switch from the all-cylinder operation to the partial-cylinder operation is executed, an intake air amount increase control increasing an intake air flow rate of an engine by increasing an opening degree of a throttle valve is performed, an ignition timing retardation control retarding an ignition timing is performed, and based on a retardation limit value of the ignition timing at a time point when the switch request is made, a start timing of the intake air amount increase control is changed. As a retardable amount being a difference between an initial ignition timing and the retardation limit value decreases, the start timing of the intake air amount increase control is delayed further.Type: GrantFiled: July 2, 2018Date of Patent: December 24, 2019Assignee: Honda Motor Co., Ltd.Inventors: Hideyuki Hayashi, Yuto Katori, Hiroki Miyazono, Daisuke Shiomi, Kentaro Onuma
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Publication number: 20190048843Abstract: A control device of an internal combustion engine is provided. In the case where a switch request for switching from all-cylinder operation to partial-cylinder operation is made, before a switch from the all-cylinder operation to the partial-cylinder operation is executed, an intake air amount increase control increasing an intake air flow rate of an engine by increasing an opening degree of a throttle valve is performed, an ignition timing retardation control retarding an ignition timing is performed, and based on a retardation limit value of the ignition timing at a time point when the switch request is made, a start timing of the intake air amount increase control is changed. As a retardable amount being a difference between an initial ignition timing and the retardation limit value decreases, the start timing of the intake air amount increase control is delayed further.Type: ApplicationFiled: July 2, 2018Publication date: February 14, 2019Applicant: Honda Motor Co.,Ltd.Inventors: Hideyuki HAYASHI, Yuto KATORI, Hiroki MIYAZONO, Daisuke SHIOMI, Kentaro ONUMA
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Patent number: 9366198Abstract: In a malfunction judging method for a fuel feeding apparatus in an internal-combustion engine, a feedback correction value is calculated based on an air-fuel ratio parameter and a predetermined feedback control algorithm. In which region a load parameter exists among a first region in which only a first fuel feeding apparatus is used, a second region in which only a second fuel feeding apparatus is used, and a third region other than the first region and the second region is determined. The feedback correction value calculated in a case where the load parameter exists in the first region is determined as a first learned value using a predetermined first learning method. The feedback correction value calculated in a case where the load parameter exists in the second region is determined as a second learned value using a predetermined second learning method.Type: GrantFiled: January 15, 2015Date of Patent: June 14, 2016Assignee: HONDA MOTOR CO., LTD.Inventors: Atsushi Izumiura, Koichiro Shinozaki, Takahide Mizuno, Kentaro Onuma, Yuichi Masukake
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Patent number: 9284897Abstract: An intake control system for an internal combustion engine, which, even when there are a plurality of intake air amounts for attaining one target torque, is capable of positively selecting a minimum intake air amount therefrom without causing hunting, and setting the minimum intake air amount as a target intake air amount, thereby making it possible to improve fuel economy. The intake control system calculates a maximum intake air amount, sets a plurality of provisional intake air amounts within a range of 0 to the maximum intake air amount, calculates torques estimated to be output from the engine with respect to the provisional intake air amounts, respectively, selects a minimum provisional intake air amount that makes the estimated torque equal to or close to the target torque from the relationship between the provisional intake air amounts and the estimated torques, and sets the same as the target intake air amount.Type: GrantFiled: August 12, 2013Date of Patent: March 15, 2016Assignee: HONDA MOTOR CO., LTD.Inventors: Masaki Ueno, Masaya Agata, Hisashi Ito, Hideharu Takamiya, Kentaro Onuma, Kohei Hanada
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Patent number: 9115656Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: GrantFiled: March 13, 2015Date of Patent: August 25, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Patent number: 9109528Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: GrantFiled: March 13, 2015Date of Patent: August 18, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Patent number: 9103291Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: GrantFiled: March 13, 2015Date of Patent: August 11, 2015Assignee: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Publication number: 20150198107Abstract: In a malfunction judging method for a fuel feeding apparatus in an internal-combustion engine, a feedback correction value is calculated based on an air-fuel ratio parameter and a predetermined feedback control algorithm. In which region a load parameter exists among a first region in which only a first fuel feeding apparatus is used, a second region in which only a second fuel feeding apparatus is used, and a third region other than the first region and the second region is determined. The feedback correction value calculated in a case where the load parameter exists in the first region is determined as a first learned value using a predetermined first learning method. The feedback correction value calculated in a case where the load parameter exists in the second region is determined as a second learned value using a predetermined second learning method.Type: ApplicationFiled: January 15, 2015Publication date: July 16, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Atsushi IZUMIURA, Koichiro SHINOZAKI, Takahide MIZUNO, Kentaro ONUMA, Yuichi MASUKAKE
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Publication number: 20150184601Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: ApplicationFiled: March 13, 2015Publication date: July 2, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Publication number: 20150184608Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: ApplicationFiled: March 13, 2015Publication date: July 2, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Publication number: 20150184602Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: ApplicationFiled: March 13, 2015Publication date: July 2, 2015Applicant: HONDA MOTOR CO., LTD.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Patent number: 9014950Abstract: A control system for an internal combustion engine having a throttle valve disposed in an intake passage of the engine. A target intake air amount of the engine is calculated, and an intake pressure of the engine is estimated. A wide-open intake air amount is calculated according to the engine rotational speed, and a theoretical intake air amount is calculated according to the wide-open intake air amount and the intake pressure. The wide-open intake air amount is an intake air amount corresponding to a state where the throttle valve is fully opened, and the theoretical intake air amount is an intake air amount corresponding to a state where no exhaust gas of the engine is recirculated to a combustion chamber of the engine. further, an exhaust gas recirculation ratio is calculated using the theoretical intake air amount and the target intake air amount, and a target output torque of the engine is calculated using the target intake air amount and the exhaust gas recirculation ratio.Type: GrantFiled: June 29, 2011Date of Patent: April 21, 2015Assignee: Honda Motor Co., Ltd.Inventors: Yosuke Kosaka, Daisuke Shiomi, Jiro Takagi, Masaya Agata, Kentaro Onuma, Shinobu Ochiai
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Patent number: 8944585Abstract: A printing apparatus is provided which can prevent foreign matters such as ink adhering to the surface of the conveying belt from getting transferred to other constitutional components. When the conveying belt is rotating in one direction, the foreign matters adhering to the surface of the conveying belt is removed by the wiper. When the conveying belt rotates a predetermined distance in the opposite direction, the pinch roller, the electric charge removing roller and the electric charge supply roller that are in contact with the belt surface are disengaged from the surface of the conveying belt. The predetermined distance is set equal to a rotating distance that the conveying belt rotates until a portion of the surface of the conveying belt, which was in contact with the wiper, comes into contact with the pinch roller, the electric charge removing roller and the electric charge supply roller.Type: GrantFiled: April 20, 2011Date of Patent: February 3, 2015Assignee: Canon Kabushiki KaishaInventors: Yasuyuki Hirai, Kentaro Onuma, Masaaki Ishihara
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Patent number: 8896644Abstract: A recording apparatus has a pair of bearings 38 having: two surfaces 38a and 38b which support both edge portions of a conveying roller 40; driven rollers 42 which press the conveying roller 40 in the direction where extension lines of the two surfaces 38a and 38b cross; and further, an intermediate bearing 47 which presses the conveying roller 40 in the direction of a point where the extension lines of the two surfaces 38a and 38b cross.Type: GrantFiled: July 3, 2012Date of Patent: November 25, 2014Assignee: Canon Kabushiki KaishaInventors: Shunya Sunouchi, Haruo Uchida, Hiroyuki Saito, Noriyuki Sugiyama, Kentaro Onuma
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Publication number: 20140060485Abstract: An intake control system for an internal combustion engine, which, even when there are a plurality of intake air amounts for attaining one target torque, is capable of positively selecting a minimum intake air amount therefrom without causing hunting, and setting the minimum intake air amount as a target intake air amount, thereby making it possible to improve fuel economy. The intake control system calculates a maximum intake air amount, sets a plurality of provisional intake air amounts within a range of 0 to the maximum intake air amount, calculates torques estimated to be output from the engine with respect to the provisional intake air amounts, respectively, selects a minimum provisional intake air amount that makes the estimated torque equal to or close to the target torque from the relationship between the provisional intake air amounts and the estimated torques, and sets the same as the target intake air amount.Type: ApplicationFiled: August 12, 2013Publication date: March 6, 2014Applicant: HONDA MOTOR CO., LTD.Inventors: Masaki UENO, Masaya AGATA, Hisashi ITO, Hideharu TAKAMIYA, Kentaro ONUMA, Kohei HANADA
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Publication number: 20120268542Abstract: A recording apparatus has a pair of bearings 38 having: two surfaces 38a and 38b which support both edge portions of a conveying roller 40; driven rollers 42 which press the conveying roller 40 in the direction where extension lines of the two surfaces 38a and 38b cross; and further, an intermediate bearing 47 which presses the conveying roller 40 in the direction of a point where the extension lines of the two surfaces 38a and 38b cross.Type: ApplicationFiled: July 3, 2012Publication date: October 25, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Shunya Sunouchi, Haruo Uchida, Hiroyuki Saito, Noriyuki Sugiyama, Kentaro Onuma
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Patent number: RE44938Abstract: A recording apparatus for forming images using a recording head includes a feeding roller, a conveying roller, a conveyance control unit, and a recording control unit. The conveyance control unit performs a conveying operation a number of times after the trailing end of a sheet reaches a predetermined position defined between the feeding roller and the conveying roller such that the trailing end of the sheet is disposed in a predetermined range upstream of the conveying roller in a sheet conveying direction after the conveying operations. At least one of the conveying operations performed a number of times is performed based on a distance from the position of the trailing end of the sheet to the position of the conveying roller.Type: GrantFiled: March 18, 2013Date of Patent: June 10, 2014Assignee: Canon Kabushiki KaishaInventors: Kentaro Onuma, Haruyuki Yanagi, Tetsuya Ishikawa, Minoru Teshigawara
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Patent number: RE45063Abstract: A recording apparatus for forming images using a recording head includes a feeding roller, a conveying roller, a conveyance control unit, and a recording control unit. The conveyance control unit performs a conveying operation a number of times after the trailing end of a sheet reaches a predetermined position defined between the feeding roller and the conveying roller such that the trailing end of the sheet is disposed in a predetermined range upstream of the conveying roller in a sheet conveying direction after the conveying operations. At least one of the conveying operations performed a number of times is performed based on a distance from the position of the trailing end of the sheet to the position of the conveying roller.Type: GrantFiled: July 26, 2012Date of Patent: August 5, 2014Assignee: Canon Kabushiki KaishaInventors: Kentaro Onuma, Haruyuki Yanagi, Tetsuya Ishikawa, Minoru Teshigawara