Patents by Inventor Kazuteru TOSHINAGA
Kazuteru TOSHINAGA 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: 20240060456Abstract: The present disclosure describes an engine system that can achieve at least one of the followings: suppressing of generating of nitrogen oxides and suppressing of remaining of uncombusted hydrocarbons. The engine system has a combustion chamber to which air and a gas fuel are supplied, and is configured to combust the gas fuel. The engine system includes a liquid fuel injecting unit, and a control unit. The liquid fuel injecting unit is configured to inject a liquid fuel thereby to ignite the gas fuel. The control unit is configured to control the liquid fuel injecting unit. The control unit is configured to control the liquid fuel injecting unit so that injection of the liquid fuel is performed after a flame propagation after ignition of the gas fuel is ended.Type: ApplicationFiled: October 30, 2023Publication date: February 22, 2024Inventors: Yusuke HONDA, Kazuteru TOSHINAGA
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Patent number: 11840978Abstract: The present disclosure describes an engine system that can achieve at least one of the followings: suppressing of generating of nitrogen oxides and suppressing of remaining of uncombusted hydrocarbons. The engine system has a combustion chamber to which air and a gas fuel are supplied, and is configured to combust the gas fuel. The engine system includes a liquid fuel injecting unit, and a control unit. The liquid fuel injecting unit is configured to inject a liquid fuel thereby to ignite the gas fuel. The control unit is configured to control the liquid fuel injecting unit. The control unit is configured to control the liquid fuel injecting unit so that injection of the liquid fuel is performed after a flame propagation after ignition of the gas fuel is ended.Type: GrantFiled: September 21, 2022Date of Patent: December 12, 2023Assignee: YANMAR HOLDINGS CO., LTD.Inventors: Yusuke Honda, Kazuteru Toshinaga
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Publication number: 20230088765Abstract: The present disclosure describes an engine system that can achieve at least one of the followings: suppressing of generating of nitrogen oxides and suppressing of remaining of uncombusted hydrocarbons. The engine system has a combustion chamber to which air and a gas fuel are supplied, and is configured to combust the gas fuel. The engine system includes a liquid fuel injecting unit, and a control unit. The liquid fuel injecting unit is configured to inject a liquid fuel thereby to ignite the gas fuel. The control unit is configured to control the liquid fuel injecting unit. The control unit is configured to control the liquid fuel injecting unit so that injection of the liquid fuel is performed after a flame propagation after ignition of the gas fuel is ended.Type: ApplicationFiled: September 21, 2022Publication date: March 23, 2023Applicant: Yanmar Holdings Co., Ltd.Inventors: Yusuke HONDA, Kazuteru TOSHINAGA
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Patent number: 11428177Abstract: An engine device including an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.Type: GrantFiled: July 30, 2021Date of Patent: August 30, 2022Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Ryoichi Hagiwara, Kazuteru Toshinaga, Masayoshi Doi, Taishi Murakami, Tatsuro Ohsara, Osamu Yamagishi
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Publication number: 20210355886Abstract: An engine device including an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.Type: ApplicationFiled: July 30, 2021Publication date: November 18, 2021Inventors: Ryoichi HAGIWARA, Kazuteru TOSHINAGA, Masayoshi DOI, Taishi MURAKAMI, Tatsuro OHSARA, Osamu YAMAGISHI
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Patent number: 11111866Abstract: An engine device including an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.Type: GrantFiled: May 27, 2020Date of Patent: September 7, 2021Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Ryoichi Hagiwara, Kazuteru Toshinaga, Masayoshi Doi, Taishi Murakami, Tatsuro Ohsara, Osamu Yamagishi
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Publication number: 20200284213Abstract: An engine device including an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.Type: ApplicationFiled: May 27, 2020Publication date: September 10, 2020Inventors: Ryoichi HAGIWARA, Kazuteru TOSHINAGA, Masayoshi DOI, Taishi MURAKAMI, Tatsuro OHSARA, Osamu YAMAGISHI
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Patent number: 10690069Abstract: An engine device of the present invention includes including: an intake manifold configured to supply air into a cylinder; an exhaust manifold configured to output exhaust gas from the cylinder; a gas injector which mixes a gaseous fuel with the air supplied from the intake manifold; and a main fuel injection valve configured to inject a liquid fuel into the cylinder for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder to a diesel mode in which the liquid fuel is supplied into the cylinder, a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.Type: GrantFiled: May 24, 2016Date of Patent: June 23, 2020Assignee: YANMAR CO., LTD.Inventors: Ryoichi Hagiwara, Kazuteru Toshinaga, Masayoshi Doi, Taishi Murakami, Tatsuro Ohsara, Osamu Yamagishi
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Publication number: 20180252174Abstract: An engine device (21) including: an intake manifold (67) configured to supply air into a cylinder (77); an exhaust manifold (44) configured to output exhaust gas from the cylinder (77); a gas injector (98) which mixes a gaseous fuel with the air supplied from the intake manifold (67); and a main fuel injection valve (79) configured to inject a liquid fuel into the cylinder (77) for combustion. At the time of switching from a gas mode in which the gaseous fuel is supplied into the cylinder 77 to a diesel mode in which the liquid fuel is supplied into the cylinder (77), a supply-start timing of the liquid fuel is delayed relative to a supply-stop timing of the gaseous fuel.Type: ApplicationFiled: May 24, 2016Publication date: September 6, 2018Applicant: Yanmar Co., Ltd.Inventors: Ryoichi HAGIWARA, Kazuteru TOSHINAGA, Masayoshi DOI, Taishi MURAKAMI, Tatsuro OHSARA, Osamu YAMAGISHI
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Patent number: 9407070Abstract: An engine ignition system and the like are provided, which reduce a required voltage and improve an ignition performance without any special electrical configuration. An ignition system is configured so that: to an auxiliary electrode is applied a voltage that is not more than a voltage applied between a center electrode and a ground electrode and that generates no spark discharge; the auxiliary electrode is positioned so that an electric field Ef2 between the auxiliary electrode and the ground electrode or an electric field Ef3 between the auxiliary electrode and the center electrode, which is generated by the applied voltage, is spread over the gap. A time for applying the voltage to the auxiliary electrode is controlled to include a time for applying the voltage between the center electrode and the ground electrode.Type: GrantFiled: January 20, 2014Date of Patent: August 2, 2016Assignees: YANMAR CO., LTD., NAGOYA INSTITUTE OF TECHNOLOGYInventors: Toru Takemoto, Kazuteru Toshinaga, Ryoichi Hagiwara, Masahiro Furutani
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Publication number: 20160020583Abstract: An engine ignition system and the like are provided, which reduce a required voltage and improve an ignition performance without any special electrical configuration. An ignition system 3 is configured so that: to an auxiliary electrode 13 is applied a voltage that is not more than a voltage applied between a center electrode 11 and a ground electrode 12 and that generates no spark discharge; the auxiliary electrode 13 is positioned so that an electric field Ef2 between the auxiliary electrode 13 and the ground electrode 12 or an electric field Ef3 between the auxiliary electrode 13 and the center electrode 11, which is generated by the applied voltage, is spread over the gap. A time for applying the voltage to the auxiliary electrode 13 is controlled to include a time for applying the voltage between the center electrode 11 and the ground electrode 12.Type: ApplicationFiled: January 20, 2014Publication date: January 21, 2016Inventors: Toru TAKEMOTO, Kazuteru TOSHINAGA, Ryoichi HAGIWARA, Masahiro FURUTANI