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公开(公告)号：US20190094148A1
公开(公告)日：2019-03-28
申请号：US16087461
申请日：2017-03-06
发明人： Yoshinori FUKUI , Ryota KOBAYASHI , Tesuya YOKOYAMA , Tsuyoshi INOUE , Yusuke ODA , Michiyasu OKADA , Kozo AKAO , Ryouichi HIGASHI
IPC分类号： G01N21/85 , G01N21/15 , G01N21/3504
CPC分类号： G01N21/85 , G01N21/03 , G01N21/15 , G01N21/3504 , G01N2021/151 , G01N2021/8578
摘要： A gas concentration measuring device (1) including a light emitter (3) and a light receiver (4) which are disposed so as to be opposed to each other with a hollow tube-like measurement pipe (2) interposed therebetween. The device (1) is configured to measure concentration of target gas passing through the measurement pipe (2) using light applied from the light emitter (3) transmitted through the inside of the measurement pipe (2), and received by the light receiver (4). Purge gas guide pipes (11, 13) through which purge gas is introduced into optical systems of the light emitter (3) and the light receiver (4) are connected to a side wall of the measurement pipe (2). The measurement pipe (2) includes a gas entrance portion (21) having a tapered shape widening from a gas supply port toward a downstream side thereof.
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公开(公告)号：US20180264422A1
公开(公告)日：2018-09-20
申请号：US15764516
申请日：2016-06-17
申请人： Yanmar Co., Ltd.
摘要： An exhaust gas purification device (1) including: a spray nozzle (2) provided in an exhaust pipe of an engine (18); a mixer (11) provided downstream of the spray nozzle in a flow direction of exhaust gas; and a catalyst reactor (12) 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 (21) and a plurality of fins (22) 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 (221).
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公开(公告)号：US20200040789A1
公开(公告)日：2020-02-06
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：US20180306084A1
公开(公告)日：2018-10-25
申请号：US15768479
申请日：2016-05-27
申请人： Yanmar Co., Ltd.
发明人： Tsuyoshi INOUE , Ryota KOBAYASHI
CPC分类号： F01N3/2892 , B01F3/04049 , B01F5/0451 , B01F5/0456 , B01F5/0616 , B01F5/0618 , B01F2005/0628 , B01F2005/0637 , B01F2005/0638 , B01F2005/0639 , F01N3/2066 , F01N3/24 , F01N13/0093 , F01N2240/20 , F01N2340/02 , F01N2590/02 , F01N2610/02 , F01N2610/1453
摘要： An object of this invention is to provide an exhaust gas purification device with which a decrease in reduction (denitrification) efficiency can be reduced. An exhaust gas purification device of this invention for a ship 1 includes: a reducing agent injector 61 of a reducing agent supply device supplying a reducing agent to an exhaust gas passing through an exhaust pipe of an engine 21 to be mounted in the ship; an exhaust mixer 62 mixing the exhaust gas and the reducing agent in a location downstream of the reducing agent injector 61 in an exhaust gas traveling direction; and selective catalytic reduction devices 34, 35 facilitating reduction of NOx in the exhaust gas of the engine 21 in a location downstream of the exhaust mixer 62 in the exhaust gas traveling direction. Multiple reducing agent injectors 61 are provided, and respectively have injection ports arranged at equal intervals along a circumferential direction of the exhaust pipe.
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公开(公告)号：US20190111388A1
公开(公告)日：2019-04-18
申请号：US16087514
申请日：2016-08-23
申请人： Yanmar Co., Ltd
发明人： Tetsuya YOKOYAMA , Arata HAYATA , Ryota KOBAYASHI
摘要： A catalytic reactor including: catalytic cassettes each including a catalyst part configured to reduce NOx in exhaust gas and an outer peripheral part made of a frame covering side surfaces of the catalyst part; and a lattice frame on which the catalytic cassettes are placed. The lattice frame includes a plurality of inflow holes through which exhaust gas flows into the catalyst parts and a plurality of frame parts which defines the respective plurality of inflow holes. The outer peripheral part of each of the catalytic cassettes is positioned so that the outer peripheral part is accommodated in a respective one of the frame parts.
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公开(公告)号：US20180340458A1
公开(公告)日：2018-11-29
申请号：US15768443
申请日：2016-05-27
申请人： Yanmar Co., Ltd.
摘要： 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.
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