Patents by Inventor Shunji Hamaoka
Shunji Hamaoka 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: 20230406474Abstract: [Problem] There is provided an exhaust system capable of sufficiently exhausting a fuel leakage gas leaked from a marine internal combustion engine without diffusing the fuel leakage gas into an engine room. [Solution] An exhaust system according to an aspect of the present disclosure includes: an exhaust duct provided above a marine internal combustion engine installed in an engine room of a ship; and a suction fan that sucks a fuel leakage gas leaking from the marine internal combustion engine into the inside of the exhaust duct from an engine upper unit side of the marine internal combustion engine. The exhaust duct exhausts the fuel leakage gas sucked by the suction fan to the outside of the engine.Type: ApplicationFiled: May 15, 2023Publication date: December 21, 2023Applicant: Yanmar Holdings Co., Ltd.Inventors: Kazuhisa ITO, Yoshinori FUKUI, Shunji Hamaoka, Hiroshi Uehara, Masato Nakai
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Patent number: 10895188Abstract: An exhaust gas purifier including a casing, SCR catalysts (comprising a first SCR catalyst and a second SCR catalyst), a first backflow prevention plate, and a second backflow prevention plate. In the casing, at least a part of the catalyst passage and at least a part of the bypass passage are formed. The SCR catalysts are disposed in the catalyst passage and selectively reduce NOx included in an exhaust gas flowing in the catalyst passage. The first backflow prevention plate prevents or reduces a backflow of an exhaust gas from a second exhaust passage to the catalyst passage.Type: GrantFiled: November 22, 2017Date of Patent: January 19, 2021Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Ryota Kobayashi, Shunji Hamaoka, Tsuyoshi Inoue, Tetsuya Yokoyama, Yoshinori Fukui, Seita Akimoto, Kenya Onishi, Kazuki Hirai
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Patent number: 10843782Abstract: A ship including a plurality of engines and a plurality of exhaust gas purifiers provided on respective exhaust paths for exhaust gas from the engines. Each exhaust gas purifier includes a casing and an opening. The casing accommodates a purification catalyst for purifying the exhaust gas. The opening serves to place the purification catalyst into or displace the purification catalyst from the casing. The exhaust gas purifiers are arranged so that the respective openings of the exhaust gas purifiers face an identical space, and operation directions of an operation performed through the openings in at least two of the exhaust gas purifiers cross.Type: GrantFiled: July 4, 2017Date of Patent: November 24, 2020Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Shunji Hamaoka, Tetsuya Yokoyama
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Patent number: 10605144Abstract: An exhaust gas purification device for a ship including: a main path communicated with outside and a bypass path branching off from a midway portion of the main path, each of the paths serving as an exhaust gas path of an engine to be mounted in the ship. A partition plate, by which the main and bypass paths are partitioned from the upstream side to the downstream side in an exhaust gas traveling direction, extends along the exhaust gas traveling direction. The partition plate has a downstream end extended through between an exhaust gas outflow port of the purification casing and an exhaust gas outlet of the main path, and the downstream end is formed with an opening to serve as a reverse-flow prevention plate.Type: GrantFiled: May 27, 2016Date of Patent: March 31, 2020Assignee: YANMAR CO., LTD.Inventors: Ryota Kobayashi, Tsuyoshi Inoue, Tetsuya Yokoyama, Yasuyuki Takahata, Shunji Hamaoka
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Publication number: 20200040789Abstract: An exhaust gas purifier including a casing, SCR catalysts (comprising a first SCR catalyst and a second SCR catalyst), a first backflow prevention plate, and a second backflow prevention plate. In the casing, at least a part of the catalyst passage and at least a part of the bypass passage are formed. The SCR catalysts are disposed in the catalyst passage and selectively reduce NOx included in an exhaust gas flowing in the catalyst passage. The first backflow prevention plate prevents or reduces a backflow of an exhaust gas from a second exhaust passage to the catalyst passage.Type: ApplicationFiled: November 22, 2017Publication date: February 6, 2020Applicant: Yanmar Co., Ltd.Inventors: Ryota KOBAYASHI, Shunji HAMAOKA, Tsuyoshi INOUE, Tetsuya YOKOYAMA, Yoshinori FUKUI, Seita AKIMOTO, Kenya ONISHI, Kazuki HIRAI
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Patent number: 10443469Abstract: An exhaust gas purification system includes, as an exhaust gas path of an engine to be mounted in a ship, a main path which is in communication with outside, a bypass path which branches off from a halfway portion of the main path, and a combined casing with which both the main path and the bypass path are in communication. A selective catalyst reduction device is accommodated in the combined casing at a location close to the main path. A path-switching member which switches exhaust gas moving direction is placed in a branched portion between the main path and the bypass path. A reducing agent injection body is placed in the main path between the path-switching member and the combined casing.Type: GrantFiled: October 22, 2014Date of Patent: October 15, 2019Assignee: YANMAR CO., LTD.Inventors: Tetsuya Yokoyama, Tsuyoshi Inoue, Yasuyuki Takahata, Shunji Hamaoka
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Publication number: 20190270500Abstract: A ship including a plurality of engines and a plurality of exhaust gas purifiers provided on respective exhaust paths for exhaust gas from the engines. Each exhaust gas purifier includes a casing and an opening. The casing accommodates a purification catalyst for purifying the exhaust gas. The opening serves to place the purification catalyst into or displace the purification catalyst from the casing. The exhaust gas purifiers are arranged so that the respective openings of the exhaust gas purifiers face an identical space and operation directions of an operation performed through the openings in at least two of the exhaust gas purifiers cross.Type: ApplicationFiled: July 4, 2017Publication date: September 5, 2019Applicant: Yanmar Co., Ltd.Inventors: Shunji HAMAOKA, Tjpetsuya YOKOYAMA
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Patent number: 10253681Abstract: An engine device which can simplify a supply air cooling structure of an engine as well as simplifying a support structure of a first supercharger and a second supercharger. In an engine device in which the first supercharger and the second supercharger are arranged in series in an exhaust gas discharge channel of the engine, the first supercharger and the second supercharger are arranged in one side surface of the engine, the second supercharger is arranged so as to be close to the one side surface of the engine, and the first supercharger is arranged so as to be away from the one side surface of the engine.Type: GrantFiled: October 22, 2014Date of Patent: April 9, 2019Assignee: Yanmar Co., Ltd.Inventors: Shunji Hamaoka, Fumihiro Nishimura, Tetsuya Yokoyama
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Patent number: 10227914Abstract: An engine device in which exhaust pipes and an intake pipe can be mounted highly rigidly by using an upper face corner of a cylinder block in an engine, and a support structure of the exhaust pipes and the intake pipe can be simplified. In an engine device in which a first supercharger and a second supercharger are disposed in series on an exhaust gas discharge path of an engine, the engine device has a structure in which the first supercharger and the second supercharger are disposed to be divided on opposed side faces of the engine, and an upper side exhaust pipe between the engine and the first supercharger, a lower side exhaust pipe between the first supercharger and the second supercharger, and an intake pipe between the first supercharger and the second supercharger extend to be substantially flush with one another at a head-cover disposed-height of an upper face of the engine.Type: GrantFiled: October 22, 2014Date of Patent: March 12, 2019Assignee: Yanmar Co., Ltd.Inventors: Toshiaki Nakagawa, Takehiro Noda, Yuuya Hanada, Shunji Hamaoka
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Publication number: 20180340458Abstract: An exhaust gas purification device for a ship 1 including: a main path 31 communicated with outside and a bypass path 32 branching off from a midway portion of the main path 31, each of the paths serving as an exhaust gas path 30 of an engine 25 to be mounted in the ship 1. A partition plate 40, by which the main and bypass paths 31, 32 are partitioned from the upstream side to the downstream side in an exhaust gas traveling direction, extends along the exhaust gas traveling direction. The partition plate 40 has a downstream end extended through between an exhaust gas outflow port 49 of the purification casing 33 and an exhaust gas outlet of the main path 31, and the downstream end is formed with an opening 401 to serve as a reverse-flow prevention plate 400.Type: ApplicationFiled: May 27, 2016Publication date: November 29, 2018Applicant: Yanmar Co., Ltd.Inventors: Ryota KOBAYASHI, Tsuyoshi INOUE, Tetsuya YOKOYAMA, Yasuyuki TAKAHATA, Shunji HAMAOKA
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Patent number: 10047664Abstract: The object of the present invention is to provide a compact engine. An engine has a two-stage turbocharger provided with a high-pressure turbocharger and a low-pressure turbocharger. The high-pressure turbocharger and the low-pressure turbocharger are separately disposed on the gear case side and the flywheel side in along direction of a main body respectively. An intake pipe and an exhaust pipe connecting the high-pressure turbocharger with the low-pressure turbocharger are separately and respectively disposed on right side and left side in a transverse direction of the main body.Type: GrantFiled: May 26, 2014Date of Patent: August 14, 2018Assignee: YANMAR CO., LTD.Inventors: Fumihiro Nishiura, Takehiro Noda, Shunji Hamaoka, Fumiya Kotou, Yuuya Hanada
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Patent number: 10006389Abstract: A supercharged engine includes an emission control device configured to add a reduction agent to exhaust gas from an engine main body to reduce nitrogen oxide in the exhaust gas by a catalyst, the supercharged engine including an air release valve configured to discharge a part of supplied air to be supplied from a supercharger to the engine main body through an air feed pipe to the outside of the air feed pipe, and a control device configured to control temperature of the exhaust gas by operating the air release valve and adjusting an amount of supply of the supplied air to be supplied from the supercharger to the engine main body.Type: GrantFiled: October 20, 2014Date of Patent: June 26, 2018Assignee: YANMAR CO., LTD.Inventors: Yoshinori Fukui, Fumihiro Nishiura, Shunji Hamaoka, Toshihisa Kanda
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Patent number: 9976465Abstract: The purpose of the present invention is to provide an exhaust purifier which suppresses unnecessary consumption of pressurization air so as to improve a removal rate of dust. An exhaust purifier for removing particulate matter adhered to a NOx catalyst by injecting pressurized air using an air injection nozzle into a housing of a catalyst reactor in which the NOx catalyst serving as a catalyst is positioned, wherein an injection valve of a soot blower supplying pressurized air into the housing of the catalyst reactor is opened and closed based on an exhaust gas flow rate so as to inject the pressurized air.Type: GrantFiled: June 26, 2015Date of Patent: May 22, 2018Assignee: Yanmar Co., Ltd.Inventors: Yoshinori Fukui, Toshihisa Kanda, Yasuyuki Takahata, Shunji Hamaoka
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Publication number: 20170145889Abstract: The purpose of the present invention is to provide an exhaust purifier which suppresses unnecessary consumption of pressurization air so as to improve a removal rate of dust. An exhaust purifier for removing particulate matter adhered to a NOx catalyst by injecting pressurized air using an air injection nozzle into a housing of a catalyst reactor in which the NOx catalyst serving as a catalyst is positioned, wherein an injection valve of a soot blower supplying pressurized air into the housing of the catalyst reactor is opened and closed based on an exhaust gas flow rate so as to inject the pressurized air.Type: ApplicationFiled: June 26, 2015Publication date: May 25, 2017Inventors: Yoshinori Fukui, Toshihisa Kanda, Yasuyuki Takahata, Shunji Hamaoka
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Publication number: 20170022884Abstract: Provided is an engine with a two-stage supercharger whereby an increase in required space for installing an engine can be suppressed without impairing cooling performance of an intercooler. This engine (1) has a first compressor unit (8) and second compressor unit (12) disposed in an air intake device (2) forming an intake air passage, and this engine (1) is configured such that intake air pressurized by the first compressor unit (8) is cooled by an intercooler (14) and supplied to the second compressor unit (12), and the intake air pressurized by the second compressor unit (12) is cooled by the intercooler (14).Type: ApplicationFiled: January 30, 2014Publication date: January 26, 2017Applicant: YANMAR CO., LTD.Inventors: Yusuyuki TAKAHATA, Shunji HAMAOKA, Tetsuya YOKOYAMA
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Publication number: 20160312720Abstract: A supercharged engine includes an emission control device configured to add a reduction agent to exhaust gas from an engine main body to reduce nitrogen oxide in the exhaust gas by a catalyst, the supercharged engine including an air release valve configured to discharge a part of supplied air to be supplied from a supercharger to the engine main body through an air feed pipe to the outside of the air feed pipe, and a control device configured to control temperature of the exhaust gas by operating the air release valve and adjusting an amount of supply of the supplied air to be supplied from the supercharger to the engine main body.Type: ApplicationFiled: October 20, 2014Publication date: October 27, 2016Inventors: Yoshinori FUKUI, Fumihiro NISHIURA, Shunji HAMAOKA, Toshihisa KANDA
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Publication number: 20160281591Abstract: An engine device in which exhaust pipes and an intake pipe can be mounted highly rigidly by using an upper face corner of a cylinder block in an engine, and a support structure of the exhaust pipes and the intake pipe can be simplified. In an engine device in which a first supercharger and a second supercharger are disposed in series on an exhaust gas discharge path of an engine, the engine device has a structure in which the first supercharger and the second supercharger are disposed to be divided on opposed side faces of the engine, and an upper side exhaust pipe between the engine and the first supercharger, a lower side exhaust pipe between the first supercharger and the second supercharger, and an intake pipe between the first supercharger and the second supercharger extend to be substantially flush with one another at a head-cover disposed-height of an upper face of the engine.Type: ApplicationFiled: October 22, 2014Publication date: September 29, 2016Applicant: YANMAR CO., LTD.Inventors: Toshiaki NAKAGAWA, Takehiro NODA, Yuuya HANADA, Shunji HAMAOKA
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Publication number: 20160252008Abstract: An engine device which can simplify a supply air cooling structure of an engine as well as simplifying a support structure of a first supercharger and a second supercharger. In an engine device in which the first supercharger and the second supercharger are arranged in series in an exhaust gas discharge channel of the engine, the first supercharger and the second supercharger are arranged in one side surface of the engine, the second supercharger is arranged so as to be close to the one side surface of the engine, and the first supercharger is arranged so as to be away from the one side surface of the engine.Type: ApplicationFiled: October 22, 2014Publication date: September 1, 2016Inventors: Shunji HAMAOKA, Fumihiro NISHIMURA, Tetsuya YOKOYAMA
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Publication number: 20160237870Abstract: An exhaust gas purification system includes, as an exhaust gas path of an engine to be mounted in a ship, a main path which is in communication with outside, a bypass path which branches off from a halfway portion of the main path, and a combined casing with which both the main path and the bypass path are in communication. A selective catalyst reduction device is accommodated in the combined casing at a location close to the main path. A path-switching member which switches exhaust gas moving direction is placed in a branched portion between the main path and the bypass path. A reducing agent injection body is placed in the main path between the path-switching member and the combined casing.Type: ApplicationFiled: October 22, 2014Publication date: August 18, 2016Inventors: Tetsuya Yokoyama, Tsuyoshi Inoue, Yasuyuki Takahata, Shunji Hamaoka
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Publication number: 20160138462Abstract: The object of the present invention is to provide a compact engine. An engine has a two-stage turbocharger provided with a high-pressure turbocharger and a low-pressure turbocharger. The high-pressure turbocharger and the low-pressure turbocharger are separately disposed on the gear case side and the flywheel side in along direction of a main body respectively. An intake pipe and an exhaust pipe connecting the high-pressure turbocharger with the low-pressure turbocharger are separately and respectively disposed on right side and left side in a transverse direction of the main body.Type: ApplicationFiled: May 26, 2014Publication date: May 19, 2016Inventors: Fumihiro NISHIURA, Takehiro NODA, Shunji HAMAOKA, Fumiya KOTOU, Yuuya HANADA