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公开(公告)号：US10598601B2
公开(公告)日：2020-03-24
申请号：US16087461
申请日：2017-03-06
发明人： Yoshinori Fukui , Ryota Kobayashi , Tetsuya Yokoyama , Tsuyoshi Inoue , Yusuke Oda , Michiyasu Okada , Kozo Akao , Ryouichi Higashi
IPC分类号： G01N21/85 , G01N21/15 , G01N21/3504 , G01N21/03
摘要： A gas concentration measuring device including a light emitter and a light receiver which are disposed so as to be opposed to each other with a hollow tube-like measurement pipe interposed therebetween. The device is configured to measure concentration of target gas passing through the measurement pipe using light applied from the light emitter, transmitted through the inside of the measurement pipe, and received by the light receiver. Purge gas guide pipes through which purge gas is introduced into optical systems of the light emitter and the light receiver are connected to a side wall of the measurement pipe. The measurement pipe includes a gas entrance portion having a tapered shape widening from a gas supply port toward a downstream side thereof.
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公开(公告)号：US10132223B2
公开(公告)日：2018-11-20
申请号：US15321003
申请日：2015-06-26
申请人： YANMAR CO., LTD.
摘要： The purpose of the present invention is to provide an exhaust purifier (1) which is capable of restoring a pressure difference (ΔP) and a purification rate (NOx removal efficiency) of a NOx catalyst (14) to the initial states thereof. An exhaust purifier (1) for removing particulate matter adhered to a NOx catalyst (14) by injecting pressurized air using an air injection nozzle (16) into a housing (13) of a catalyst reactor (12) in which the NOx catalyst (14) serving as a catalyst is positioned, wherein the particulate matter is removed by increasing the pressure inside the catalyst reactor (12) to a prescribed pressure (ΔIP) within a prescribed interval of time (t) by operating an injection valve (17) for supplying pressurized air.
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公开(公告)号：US20170145889A1
公开(公告)日：2017-05-25
申请号：US15321167
申请日：2015-06-26
申请人： YANMAR CO., LTD.
摘要： 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.
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公开(公告)号：US09976465B2
公开(公告)日：2018-05-22
申请号：US15321167
申请日：2015-06-26
申请人： YANMAR CO., LTD.
摘要： 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.
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公开(公告)号：US09732652B2
公开(公告)日：2017-08-15
申请号：US15028336
申请日：2014-10-07
申请人： YANMAR CO., LTD.
CPC分类号： F01N3/2066 , B01F3/04021 , B01F5/0451 , B01F5/0616 , B01F2005/0637 , F01N3/2892 , F01N13/087 , F01N2240/20 , F01N2240/36 , F01N2410/00 , F01N2590/02 , F01N2610/02 , F01N2610/1453 , F01N2900/12 , F02D2200/701 , Y02T10/24
摘要： An exhaust-gas purification device includes an injection nozzle provided inside an exhaust pipe and a catalyst reactor provided on a downstream side of the injection nozzle, and is configured to inject urea water from the urea water injection nozzle into exhaust gas and to reduce nitrogen oxide in the exhaust gas by a NOx catalyst contained in the catalyst reactor, where the injection nozzle is disposed to inject the urea water toward the downstream side of the flow direction of the exhaust gas, and a mixer is connected to an upstream end of the catalyst reactor, the mixer having a plurality of plate members radially disposed around the axial center of the exhaust pipe, the plate members each being formed in such a way that angles of plate surfaces of the plate member to the flow direction are different values on the upstream side and the downstream side.
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公开(公告)号：US10895188B2
公开(公告)日：2021-01-19
申请号：US16480290
申请日：2017-11-22
申请人： Yanmar Co., Ltd.
发明人： Ryota Kobayashi , Shunji Hamaoka , Tsuyoshi Inoue , Tetsuya Yokoyama , Yoshinori Fukui , Seita Akimoto , Kenya Onishi , Kazuki Hirai
摘要： 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.
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公开(公告)号：US10413874B2
公开(公告)日：2019-09-17
申请号：US15764516
申请日：2016-06-17
申请人： Yanmar Co., Ltd.
摘要： An exhaust gas purification device including: a spray nozzle provided in an exhaust pipe of an engine; a mixer provided downstream of the spray nozzle in a flow direction of exhaust gas; and a catalyst reactor provided downstream of the mixer. The exhaust gas purification device is configured to spray a reducing agent from the urea water spray nozzle to the exhaust gas from the engine, to mix the reducing agent with the exhaust gas in the mixer, and to reduce nitrogen oxides in the exhaust gas using the catalyst reactor. The mixer includes a cylindrical body and a plurality of fins arranged in the cylindrical body radially outward with respect to the axis of the cylindrical body. The upstream portion of each fin is shaped to provide a cutoff portion.
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公开(公告)号：US10337373B2
公开(公告)日：2019-07-02
申请号：US15321147
申请日：2015-06-26
申请人： YANMAR CO., LTD.
发明人： Yoshinori Fukui
IPC分类号： F01N3/20 , F01N3/08 , F02D41/22 , F02D43/00 , F02D45/00 , F01N3/10 , F02D41/02 , B60H1/12 , B60R13/08 , B60R19/02 , F01N3/30 , F01P5/02 , F02B13/02 , F01K19/08 , F01N3/023 , F02M35/06 , F23D14/52 , F23D14/82 , B60R19/18
摘要： The invention provides an exhaust purification device capable of suppressing the temporal decrease in NOx catalyst removal efficiency due to soot accumulation. The invention provides an exhaust purification device using an air injection nozzle to inject pressurized air into a casing of a catalyst reactor containing an NOx catalyst as a catalyst and removing soot adhering to the NOx catalyst, wherein it is determined and externally notified that there is abnormal deterioration in the NOx catalyst when the pressure difference ΔP in exhaust between the upstream and downstream sides of the NOx catalyst has increased by at least a first reference pressure difference increase ΔPt1, which is the allowable amount of pressure difference increase, above the pressure difference ΔPi in exhaust between the upstream and downstream sides of the catalyst in the initial state at the same exhaust flow rate Ve.
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公开(公告)号：US10006389B2
公开(公告)日：2018-06-26
申请号：US15030582
申请日：2014-10-20
申请人： YANMAR CO., LTD.
CPC分类号： F02D41/0245 , F01N3/08 , F01N3/20 , F01N3/2053 , F01N3/206 , F01N3/2066 , F01N2430/08 , F01N2560/026 , F01N2590/02 , F02B37/16 , F02D41/0007 , F02D41/1446 , F02D2200/0802 , Y02T10/144 , Y02T10/24 , Y02T10/26
摘要： 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.
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公开(公告)号：US20170152783A1
公开(公告)日：2017-06-01
申请号：US15321003
申请日：2015-06-26
申请人： YANMAR CO., LTD.
CPC分类号： F01N3/30 , B01D53/86 , B01D53/90 , B01D53/9418 , B01D2255/20707 , B01D2255/20723 , B01D2255/20784 , B01J38/12 , F01N3/20 , F01N3/2066 , F01N2610/02 , F01N2610/1453
摘要： The purpose of the present invention is to provide an exhaust purifier (1) which is capable of restoring a pressure difference (ΔP) and a purification rate (NOx removal efficiency) of a NOx catalyst (14) to the initial states thereof. An exhaust purifier (1) for removing particulate matter adhered to a NOx catalyst (14) by injecting pressurized air using an air injection nozzle (16) into a housing (13) of a catalyst reactor (12) in Which the NOx catalyst (14) serving as a catalyst is positioned, wherein the particulate matter is removed by increasing the pressure inside the catalyst reactor (12) to a prescribed pressure (ΔIP) within a prescribed interval of time (t) by operating an injection valve (17) for supplying pressurized air
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