Patents by Inventor Naoki YONEYA
Naoki YONEYA 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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Publication number: 20230067661Abstract: The present subject matter relates to a control unit for controlling an internal combustion engine, wherein the internal combustion engine includes at least one cylinder 100, at least one combustion chamber 90 within which a fuel is burned, at least one fuel injector 40, 50, at least one ignition device 60, and an oxygen determination unit 20 configured to determine the content of oxygen in the fuel, wherein the control unit 10 is configured to control the internal combustion engine based on the content of oxygen in the fuel detected by the oxygen determination unit 20.Type: ApplicationFiled: January 28, 2021Publication date: March 2, 2023Inventors: Naoki YONEYA, Masayuki SARUWATARI, Yoshihito YASUKAWA, Maung Maung AYE
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Patent number: 11313300Abstract: The present invention relates to a device and a method for controlling the start of an internal combustion engine, wherein the internal combustion engine is equipped with an ignition device comprising a fuel-fed prechamber to ignite an air-fuel mixture in a main combustion chamber. In order to reduce the emissions of the internal combustion engine during engine start a prechamber heating operations is performed by injecting a predetermined amount of fuel into the prechamber and igniting an air-fuel-mixture therein, while the main fuel injector is deactivated during at least a first engine cycle after engine start request.Type: GrantFiled: December 24, 2019Date of Patent: April 26, 2022Assignee: Hitachi Astemo, Ltd.Inventors: Naoki Yoneya, Masayuki Saruwatari
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Publication number: 20220090552Abstract: The present invention relates to a device and a method for controlling the start of an internal combustion engine, wherein the internal combustion engine is equipped with an ignition device comprising a fuel-fed prechamber to ignite an air-fuel mixture in a main combustion chamber. In order to reduce the emissions of the internal combustion engine during engine start a prechamber heating operations is performed by injecting a predetermined amount of fuel into the prechamber and igniting an air-fuel-mixture therein, while the main fuel injector is deactivated during at least a first engine cycle after engine start request.Type: ApplicationFiled: December 24, 2019Publication date: March 24, 2022Inventors: Naoki YONEYA, Masayuki SARUWATARI
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Publication number: 20210324809Abstract: The present subject matter provides a device and a method for injecting non-combustible fluid into an internal combustion. In order to reduce the non-combustible fluid consumption, the fluid to be injected is heated to a predefined temperature which improves the spray characteristics, reduces wall wetting and leads to a better vaporization of the fluid in the combustion chamber.Type: ApplicationFiled: July 3, 2019Publication date: October 21, 2021Inventors: Naoki YONEYA, Masayuki SARUWATARI
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Patent number: 11143122Abstract: The present invention provides a method for avoiding knocking in an internal combustions engine, preferably in a gasoline engine with a high compression ratio and a variable valve train which is able to perform EIVC, by injecting a non-combustible fluid into the intake port and/or in the cylinder during a transient operating mode.Type: GrantFiled: January 24, 2019Date of Patent: October 12, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoki Yoneya, Takashi Okamoto
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Publication number: 20210172394Abstract: The present invention provides a method for avoiding knocking in an internal combustions engine, preferably in a gasoline engine with a high compression ratio and a variable valve train which is able to perform EIVC, by injecting a non-combustible fluid into the intake port and/or in the cylinder during a transient operating mode.Type: ApplicationFiled: January 24, 2019Publication date: June 10, 2021Applicant: Hitachi Automotive Systems, Ltd.Inventors: Naoki YONEYA, Takashi OKAMOTO
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Patent number: 11007480Abstract: An object of the present invention is to provide an exhaust gas purification system which exhibits high exhaust gas purification performance. The present invention provides an exhaust gas purification system including: a carrier containing aluminum oxide; an exhaust gas purification device including a catalyst provided on the carrier and containing gallium, and connected to an internal combustion engine; and a system connected to the exhaust gas purification device for increasing an oxygen concentration. The system for increasing an oxygen concentration provides an oxygen concentration higher than that of a post combusted gas of the internal combustion engine.Type: GrantFiled: February 5, 2018Date of Patent: May 18, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Eri Takahashi, Masato Kaneeda, Kazuhiro Oryoji, Naoki Yoneya, Masayuki Saruwatari
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Patent number: 10890124Abstract: Provided is a technique capable of suppressing the amount of fuel adhering to a wall surface of a cylinder in an engine whose wall surface temperature varies every cycle. An internal combustion engine control device that controls an internal combustion engine, which injects fuel into a cylinder and generates combustion by ignition, includes: a wall surface temperature calculation unit that calculates a wall surface temperature of the cylinder based on a pressure in the cylinder; and a combustion control unit that controls the combustion of the internal combustion engine based on the calculated wall surface temperature.Type: GrantFiled: September 27, 2017Date of Patent: January 12, 2021Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoki Yoneya, Masayuki Saruwatari
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Patent number: 10844826Abstract: An object of the present invention is to predict change of a combustion limit due to cycle variation of temperature and an EGR ratio and perform correction every cycle to decrease an amount of combustion consumption. Therefore, in an internal combustion engine control device that controls an internal combustion engine including a cylinder and an exhaust pipe, the internal combustion engine control device includes a control unit configured to perform EGR control of controlling an exhaust gas in the exhaust pipe to return to an inner cylinder of the cylinder, obtain temperature of the gas in the internal cylinder and an EGR ratio in a state where both an intake valve and an exhaust valve are closed in an combustion cycle, and correct a combustion parameter in a same combustion cycle as the combustion cycle on the basis of the obtained gas temperature and the obtained EGR ratio.Type: GrantFiled: March 14, 2017Date of Patent: November 24, 2020Assignee: Hitachi Automotive Systems, Ltd.Inventors: Naoki Yoneya, Masayuki Saruwatari, Kazuhiro Oryoji
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Publication number: 20200347790Abstract: Method for controlling injection of a non-combustible fluid into an internal combustion engine. The internal combustion engine may include at least one cylinder, at least one non-combustible fluid injector, at least one combustion phase determining means, and at least one control unit. The method may comprise the steps of determining the combustion phase by the combustion phase determining means, determining the amount of non-combustible fluid to be injected depending on the combustion phase.Type: ApplicationFiled: January 24, 2019Publication date: November 5, 2020Applicant: Hitachi Automotive Systems, Ltd.Inventors: Takashi OKAMOTO, Naoki YONEYA
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Patent number: 10808630Abstract: There is a problem of a difficulty in estimating the temporal change of the MBT for each of cylinders with light calculation load and high accuracy. An object of the present invention is to provide a control device capable of detecting a temporal change in the fuel efficiency optimum ignition timing (MBT) for each of cylinders. Therefore, the control device for internal combustion engine includes a control unit (CPU) that estimates an optimum ignition timing of each of cylinders from the relationship between the phase angle (?Tmax) at which the torque peaks and the phase angle (?Pmax) at which the in-cylinder pressure peaks with respect to the ignition timing of the cylinder.Type: GrantFiled: January 31, 2018Date of Patent: October 20, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoki Yoneya, Masayuki Saruwatari
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Patent number: 10641186Abstract: Because an in-cylinder temperature becomes low immediately after cold starting, it is impossible to take large ignition timing retard to avoid combustion instability and it takes time to activate a catalyst existing downstream of an internal combustion engine. The present invention provides an internal combustion engine control apparatus including an ignition timing control unit to control an ignition timing of an ignition device attached to an internal combustion engine. The internal combustion engine control apparatus includes an in-cylinder temperature raising unit that raises an in-cylinder temperature, the in-cylinder temperature is raised by the in-cylinder temperature raising unit, and a retard amount of the ignition timing of the ignition device is increased by the ignition timing control unit.Type: GrantFiled: January 13, 2017Date of Patent: May 5, 2020Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoki Yoneya, Masayuki Saruwatari, Kazuhiro Oryoji
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Publication number: 20200056553Abstract: There is a problem of a difficulty in estimating the temporal change of the MBT for each of cylinders with light calculation load and high accuracy. An object of the present invention is to provide a control device capable of detecting a temporal change in the fuel efficiency optimum ignition timing (MBT) for each of cylinders. Therefore, the control device for internal combustion engine includes a control unit (CPU) that estimates an optimum ignition timing of each of cylinders from the relationship between the phase angle (?Tmax) at which the torque peaks and the phase angle (?Pmax) at which the in-cylinder pressure peaks with respect to the ignition timing of the cylinder.Type: ApplicationFiled: January 31, 2018Publication date: February 20, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoki Yoneya, Masayuki Saruwatari
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Publication number: 20200001236Abstract: An object of the present invention is to provide an exhaust gas purification system which exhibits high exhaust gas purification performance. The present invention provides an exhaust gas purification system including: a carrier containing aluminum oxide; an exhaust gas purification device including a catalyst provided on the carrier and containing gallium, and connected to an internal combustion engine; and a system connected to the exhaust gas purification device for increasing an oxygen concentration. The system for increasing an oxygen concentration provides an oxygen concentration higher than that of a post combusted gas of the internal combustion engine.Type: ApplicationFiled: February 5, 2018Publication date: January 2, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Eri TAKAHASHI, Masato KANEEDA, Kazuhiro ORYOJI, Naoki YONEYA, Masayuki SARUWATARI
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Patent number: 10488248Abstract: A problem of the present invention is to provide a vibration analysis program capable of analyzing bidirectional exchanges between a distribution amount and a difference amount with respect to an external system of the part in a part modeled as a finite element, in which the difference amount accumulation characteristic and the distribution amount accumulation characteristic are distributed.Type: GrantFiled: April 27, 2016Date of Patent: November 26, 2019Assignee: HITACHI, LTD.Inventors: Yosuke Tanabe, Masanori Watanabe, Naoki Yoneya
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Publication number: 20190285008Abstract: Provided is a technique capable of suppressing the amount of fuel adhering to a wall surface of a cylinder in an engine whose wall surface temperature varies every cycle. An internal combustion engine control device that controls an internal combustion engine, which injects fuel into a cylinder and generates combustion by ignition, includes: a wall surface temperature calculation unit that calculates a wall surface temperature of the cylinder based on a pressure in the cylinder; and a combustion control unit that controls the combustion of the internal combustion engine based on the calculated wall surface temperature.Type: ApplicationFiled: September 27, 2017Publication date: September 19, 2019Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoki YONEYA, Masayuki SARUWATARI
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Publication number: 20190226443Abstract: An object of the present invention is to predict change of a combustion limit due to cycle variation of temperature and an EGR ratio and perform correction every cycle to decrease an amount of combustion consumption. Therefore, in an internal combustion engine control device that controls an internal combustion engine including a cylinder and an exhaust pipe, the internal combustion engine control device includes a control unit configured to perform EGR control of controlling an exhaust gas in the exhaust pipe to return to an inner cylinder of the cylinder, obtain temperature of the gas in the internal cylinder and an EGR ratio in a state where both an intake valve and an exhaust valve are closed in an combustion cycle, and correct a combustion parameter in a same combustion cycle as the combustion cycle on the basis of the obtained gas temperature and the obtained EGR ratio.Type: ApplicationFiled: March 14, 2017Publication date: July 25, 2019Inventors: Naoki YONEYA, Masayuki SARUWATARI, Kazuhiro ORYOJI
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Publication number: 20190048807Abstract: Because an in-cylinder temperature becomes low immediately after cold starting, it is impossible to take large ignition timing retard to avoid combustion instability and it takes time to activate a catalyst existing downstream of an internal combustion engine. The present invention provides an internal combustion engine control apparatus including an ignition timing control unit to control an ignition timing of an ignition device attached to an internal combustion engine. The internal combustion engine control apparatus includes an in-cylinder temperature raising unit that raises an in-cylinder temperature, the in-cylinder temperature is raised by the in-cylinder temperature raising unit, and a retard amount of the ignition timing of the ignition device is increased by the ignition timing control unit.Type: ApplicationFiled: January 13, 2017Publication date: February 14, 2019Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Naoki YONEYA, Masayuki SARUWATARI, Kazuhiro ORYOJI
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Publication number: 20180128675Abstract: A problem of the present invention is to provide a vibration analysis program capable of analyzing bidirectional exchanges between a distribution amount and a difference amount with respect to an external system of the part in a part modeled as a finite element, in which the difference amount accumulation characteristic and the distribution amount accumulation characteristic are distributed.Type: ApplicationFiled: April 27, 2016Publication date: May 10, 2018Applicant: HITACHI, LTD.Inventors: Yosuke TANABE, Masanori WATANABE, Naoki YONEYA