JP2009228484A - Exhaust emission control device for internal combustion engine - Google Patents

Exhaust emission control device for internal combustion engine Download PDF

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JP2009228484A
JP2009228484A JP2008072135A JP2008072135A JP2009228484A JP 2009228484 A JP2009228484 A JP 2009228484A JP 2008072135 A JP2008072135 A JP 2008072135A JP 2008072135 A JP2008072135 A JP 2008072135A JP 2009228484 A JP2009228484 A JP 2009228484A
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exhaust gas
scr
internal combustion
combustion engine
reducing agent
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JP4951560B2 (en
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Daisuke Shirai
大輔 白井
Isato Aizawa
勇人 相沢
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Tokyo Roki Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine capable of mixing a reducer thoroughly with an exhaust gas and supplying the resultant mixture to an SCR uniformly without providing a mixer structural body. <P>SOLUTION: The exhaust emission control device for the internal combustion engine 100 is equipped with a cylindrical case 101 having a closed end 101a, accommodating the SCR 10 in such a state that is apart from the end 101a, and having a space 101b between the end 101a and the upstream end 10a of the SCR 10, a cylindrical pipe 102 which is coupled with the side cylindrical portion of the case 101 in the tangential direction in the region of the side cylindrical portion which is located between the end 101a and the upstream end 10a, and in which the exhaust gas discharged from the internal combustion engine flows, and a reducer supplying means 103 to supply the reducer to the exhaust gas flowing in the pipe 102. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、内燃機関用の排ガス浄化装置に関する。   The present invention relates to an exhaust gas purification apparatus for an internal combustion engine.

内燃機関用の排ガス浄化装置は、内燃機関（例えば、ディーゼルエンジンなど）から排出された排ガスを浄化するための装置である（例えば、下記特許文献１，２参照）。この種の装置として、ＳＣＲ（Selective Catalytic Reduction)が内部に収納された筒状ケースと、ＳＣＲの上流側から排ガスに還元剤（尿素など）を供給する還元剤供給手段（尿素水噴射ノズルなど）と、を備えたものが知られている。さらに近年では、筒状ケース内に、排ガス流入口から順に、ＤＯＣ(Diesel Oxidation Catalyst)、ＤＰＦ(Diesel Particulate Filter) 、ＳＣＲ（Selective Catalytic Reduction) 及びアンモニアスリップ（例えば、ＤＯＣ等）が直列に収納されており、ＤＰＦとＳＣＲとの間に、還元剤供給手段が設けられているものも知られている。
特表２００２−５０２９２７号公報 ＥＰ０７５８７１３Ａ１号公報 An exhaust gas purification apparatus for an internal combustion engine is an apparatus for purifying exhaust gas discharged from an internal combustion engine (for example, a diesel engine) (see, for example, Patent Documents 1 and 2 below). As this type of equipment, a cylindrical case containing SCR (Selective Catalytic Reduction) and reducing agent supply means (such as urea water injection nozzle) for supplying reducing agent (such as urea) to exhaust gas from the upstream side of the SCR The thing equipped with these is known. In recent years, DOC (Diesel Oxidation Catalyst), DPF (Diesel Particulate Filter), SCR (Selective Catalytic Reduction) and ammonia slip (for example, DOC, etc.) are stored in series in the cylindrical case in order from the exhaust gas inlet. It is also known that a reducing agent supply means is provided between the DPF and the SCR.
Japanese translation of PCT publication No. 2002-502927 EP0758713A1 publication

ところで、上記のような装置において、ＳＣＲによる排ガスの浄化効率を向上させるためには、排ガスに還元剤を十分に混合させ、これらの混合物をＳＣＲに対して均一に供給することが望ましい。そこで、上記のような装置においては、従来より、ＳＣＲの上流側にミキサ構造体が設けられている。なお、還元剤を供給する箇所とＳＣＲとの距離を長く確保することによっても、排ガスに還元剤を十分に混合させ、これらの混合物をＳＣＲに対して均一に供給することは可能である。しかし、上記のような装置のうち、とりわけ、ＤＯＣ、ＤＰＦ、ＳＣＲ及びアンモニアスリップが収納された装置にあっては、装置が長尺化して搭載性が悪化しやすいため、還元剤を供給する箇所とＳＣＲとの距離を長く確保することは困難である。従って、かかる装置にあっては、排ガスに還元剤を十分に混合させ、これらの混合物をＳＣＲに対して均一に供給するためには、ミキサ構造体を設けざるを得なかったのである。ところが、上記の装置にミキサ構造体を設けた場合には、装置の重量化及び高コスト化などの問題を招いてしまう。   By the way, in the apparatus as described above, in order to improve the purification efficiency of the exhaust gas by SCR, it is desirable that the reducing agent is sufficiently mixed with the exhaust gas and these mixtures are uniformly supplied to the SCR. Therefore, in the apparatus as described above, conventionally, a mixer structure is provided on the upstream side of the SCR. Note that it is possible to sufficiently mix the reducing agent into the exhaust gas and to supply the mixture to the SCR evenly by ensuring a long distance between the SCR and the location where the reducing agent is supplied. However, among the devices described above, in particular, in a device in which DOC, DPF, SCR, and ammonia slip are accommodated, the length of the device tends to deteriorate and the mountability is likely to deteriorate. It is difficult to secure a long distance between SCR and SCR. Therefore, in such an apparatus, in order to sufficiently mix the reducing agent with the exhaust gas and to uniformly supply these mixtures to the SCR, a mixer structure must be provided. However, when a mixer structure is provided in the above apparatus, problems such as an increase in the weight and cost of the apparatus are caused.

本発明は、このような問題に鑑みてなされたものであり、ミキサ構造体を設けることなく、排ガスに還元剤を十分に混合させ、これらの混合物をＳＣＲに対して均一に供給することが可能な内燃機関用の排ガス浄化装置を提供することを目的とする。   The present invention has been made in view of such a problem, and it is possible to sufficiently mix a reducing agent with exhaust gas and to supply these mixtures uniformly to the SCR without providing a mixer structure. An object of the present invention is to provide an exhaust gas purification device for an internal combustion engine.

上記課題を解決するために、本発明に係る内燃機関用の排ガス浄化装置は、閉塞された端部を有し、当該端部から離れた状態でＳＣＲが内部に収納されており、前記端部と前記ＳＣＲの上流側端部との間に空間が形成されている筒状ケースと、前記筒状ケースの側筒部の領域のうち前記端部と前記上流側端部との間の領域において、当該側筒部に対して接線方向に連結され、内部に内燃機関から排出された排ガスが流れる筒状パイプと、前記筒状パイプ内を流れる前記排ガスに還元剤を供給する還元剤供給手段と、を備えることを特徴とする。   In order to solve the above problems, an exhaust gas purification apparatus for an internal combustion engine according to the present invention has a closed end portion, and an SCR is housed inside the end portion away from the end portion. In a region between the end and the upstream end of the region of the side cylindrical portion of the cylindrical case, and a space formed between the upstream end of the SCR and the cylindrical case A cylindrical pipe that is tangentially connected to the side cylinder portion and in which the exhaust gas discharged from the internal combustion engine flows, and a reducing agent supply means that supplies a reducing agent to the exhaust gas flowing in the cylindrical pipe; It is characterized by providing.

本発明によれば、ミキサ構造体を設けることなく、排ガスに還元剤を十分に混合させ、これらの混合物をＳＣＲに対して均一に供給することが可能となる。   According to the present invention, it is possible to sufficiently mix the reducing agent with the exhaust gas and to supply these mixtures uniformly to the SCR without providing a mixer structure.

以下、本発明の各実施形態について説明する。   Hereinafter, each embodiment of the present invention will be described.

＝＝＝第１実施形態＝＝＝
まず、図１及び図２を参照しながら、本発明の第１実施形態について説明する。図１は本発明の第１実施形態に係る内燃機関用の排ガス浄化装置１００を示す概略図、図２は図１のＡ−Ａ線矢視図である。 === First Embodiment ===
First, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 is a schematic view showing an exhaust gas purification apparatus 100 for an internal combustion engine according to a first embodiment of the present invention, and FIG. 2 is a view taken along line AA in FIG.

図１に示すように、内燃機関用の排ガス浄化装置１００は、筒状ケース１０１、筒状パイプ１０２、及び還元剤供給手段（具体的には尿素水噴射ノズル）１０３を備えるとともに、ＤＯＣ及びＤＰＦ２０が収納された筒状ケース１０４を備えている。   As shown in FIG. 1, an exhaust gas purification apparatus 100 for an internal combustion engine includes a cylindrical case 101, a cylindrical pipe 102, and a reducing agent supply means (specifically, a urea water injection nozzle) 103, and also includes a DOC and a DPF 20. Is provided with a cylindrical case 104.

筒状ケース１０１は、閉塞された端部１０１ａを有し、端部１０１ａから離れた状態でＳＣＲ１０が内部に収納されており、さらに、ＳＣＲ１０の下流側には、アンモニアスリップが収納されている。端部１０１ａとＳＣＲ１０の上流側端部１０ａとの間には、排ガスを旋回させるための空間１０１ｂが形成されている。   The cylindrical case 101 has a closed end portion 101a, and the SCR 10 is housed therein in a state of being separated from the end portion 101a. Further, an ammonia slip is housed downstream of the SCR 10. A space 101b for turning the exhaust gas is formed between the end 101a and the upstream end 10a of the SCR 10.

また、筒状パイプ１０２の一端側は、図２に示すように、筒状ケース１０１の側筒部の領域のうち端部１０１ａと上流側端部１０ａとの間の領域において、当該側筒部に対して接線方向に連結されている。さらに、筒状パイプ１０２の他端側は、閉塞した端部１０２ａを有するとともに、筒状ケース１０４内に挿入されており、具体的には、筒状ケース１０４の端部１０４ａとＤＰＦ２０の下流側端部２０ａとの間に形成された空間１０４ｂ内に挿入されている。この筒状パイプ１０２の他端側のうち、筒状ケース１０４内に挿入された領域には、複数の通気孔１０２ｂが設けられている。また、筒状パイプ１０２の端部１０２ａには、還元剤供給手段１０３が設けられている。なお、筒状ケース１０１と筒状ケース１０４とは、相互に略平行となるように配置されている。   Further, as shown in FIG. 2, the one end side of the cylindrical pipe 102 is the side cylindrical portion in the region between the end portion 101 a and the upstream end portion 10 a in the region of the side cylindrical portion of the cylindrical case 101. Are connected in a tangential direction. Further, the other end side of the cylindrical pipe 102 has a closed end portion 102a and is inserted into the cylindrical case 104. Specifically, the end portion 104a of the cylindrical case 104 and the downstream side of the DPF 20 are inserted. It is inserted into a space 104b formed between the end 20a. A plurality of vent holes 102 b are provided in a region inserted into the cylindrical case 104 on the other end side of the cylindrical pipe 102. A reducing agent supply means 103 is provided at the end 102 a of the cylindrical pipe 102. The cylindrical case 101 and the cylindrical case 104 are disposed so as to be substantially parallel to each other.

このような内燃機関用の排ガス浄化装置１００において、内燃機関から排出された排ガスは、筒状ケース１０４内に導入されてＤＯＣ及びＤＰＦ２０を通過し、空間１０４ｂ内に到達する。空間１０４ｂに到達した排ガスは、通気孔１０２ｂを介して筒状パイプ１０２内に導入される。その際、排ガスは、通気孔１０２ｂによって、均一に分散した状態で筒状パイプ１０２内に導入されるとともに、還元剤供給手段１０３から供給された還元剤と攪拌される。さらに、この排ガスは、筒状パイプ１０２と筒状ケース１０１との連結部を介して、筒状ケース１０１内に導入され、その空間１０１ｂ内において旋回される。このときに生じる旋回流（図２参照）により、排ガスは、さらに攪拌されることとなり、還元剤との混合が促進され、これらの混合物がＳＣＲ１０に対して均一に供給されることとなる。その結果、ＳＣＲ１０による排ガスの浄化効率が向上する。このようにして、ＤＯＣ、ＤＰＦ、ＳＣＲ及びアンモニアスリップが収納された装置であっても、ミキサ構造体を設けることなく、排ガスに還元剤を十分に混合させ、これらの混合物をＳＣＲ１０に対して均一に供給することが可能となるのである。   In such an exhaust gas purification apparatus 100 for an internal combustion engine, the exhaust gas discharged from the internal combustion engine is introduced into the cylindrical case 104, passes through the DOC and DPF 20, and reaches the space 104b. The exhaust gas that has reached the space 104b is introduced into the cylindrical pipe 102 through the vent hole 102b. At that time, the exhaust gas is introduced into the cylindrical pipe 102 in a uniformly dispersed state by the vent hole 102 b and is stirred with the reducing agent supplied from the reducing agent supply means 103. Further, the exhaust gas is introduced into the cylindrical case 101 via a connecting portion between the cylindrical pipe 102 and the cylindrical case 101, and swirled in the space 101b. Due to the swirling flow (see FIG. 2) generated at this time, the exhaust gas is further stirred, the mixing with the reducing agent is promoted, and these mixtures are uniformly supplied to the SCR 10. As a result, the exhaust gas purification efficiency by the SCR 10 is improved. In this way, even in an apparatus in which DOC, DPF, SCR, and ammonia slip are stored, a reducing agent is sufficiently mixed with exhaust gas without providing a mixer structure, and these mixtures are uniformly mixed with SCR10. It becomes possible to supply to.

＝＝＝第２実施形態＝＝＝
次に、図３及び図４を参照しながら、本発明の第２実施形態について説明する。図３は本発明の第２実施形態に係る内燃機関用の排ガス浄化装置を示す概略図、図４は図３のＢ−Ｂ線矢視図である。なお、各図において、図１及び図２と同一若しくは類似の箇所には、同一の符号を付している。 === Second Embodiment ===
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 3 is a schematic view showing an exhaust gas purifying apparatus for an internal combustion engine according to a second embodiment of the present invention, and FIG. 4 is a view taken along the line BB in FIG. In each figure, the same or similar parts as those in FIGS. 1 and 2 are denoted by the same reference numerals.

図３に示すように、内燃機関用の排ガス浄化装置２００は、筒状ケース１０１、筒状パイプ２０２、及び還元剤供給手段（具体的には尿素水噴射ノズル）２０３を備えるとともに、ＤＯＣ及びＤＰＦ２０が収納された筒状ケース１０４を備えている。   As shown in FIG. 3, the exhaust gas purification apparatus 200 for an internal combustion engine includes a cylindrical case 101, a cylindrical pipe 202, and a reducing agent supply means (specifically, a urea water injection nozzle) 203, and also includes a DOC and a DPF 20. Is provided with a cylindrical case 104.

図４に示すように、筒状パイプ２０２の一端側は、図２に示した筒状パイプ１０２の一端側と同様の構成を有しており、筒状ケース１０１の側筒部の領域のうち端部１０１ａと上流側端部１０ａとの間の領域において、当該側筒部に対して接線方向に連結されている。   As shown in FIG. 4, one end side of the cylindrical pipe 202 has the same configuration as the one end side of the cylindrical pipe 102 shown in FIG. In a region between the end portion 101a and the upstream end portion 10a, the side tube portion is connected in a tangential direction.

但し、筒状パイプ２０２の他端側は、図２に示した筒状パイプ１０２の一端側と異なった構成を有しており、筒状ケース１０４の端部１０４ａに接続されている。筒状ケース１０１と筒状ケース１０４とは、相互に略直交するように配置されている。   However, the other end side of the cylindrical pipe 202 has a configuration different from that of the one end side of the cylindrical pipe 102 shown in FIG. 2, and is connected to the end portion 104 a of the cylindrical case 104. The cylindrical case 101 and the cylindrical case 104 are disposed so as to be substantially orthogonal to each other.

このような内燃機関用の排ガス浄化装置２００においても、内燃機関から排出された排ガスは、筒状ケース１０４内に導入されてＤＯＣ及びＤＰＦ２０を通過し、空間１０４ｂ内に到達する。空間１０４ｂに到達した排ガスは、その下流側の端部１０４ａに接続された筒状パイプ２０２内に導入され、この筒状パイプ２０２内を通過する際に、排ガスには還元剤供給手段２０３から還元剤が供給される。還元剤が供給された排ガスは、筒状ケース１０１内に導入され、その空間１０１ｂ内において旋回される。このときに生じる旋回流により、排ガスは、攪拌されることとなり、還元剤と十分に混合され、これらの混合物がＳＣＲ１０に対して均一に供給されることとなる。その結果、ＳＣＲ１０による排ガスの浄化効率が向上する。このようにして、ＤＯＣ、ＤＰＦ、ＳＣＲ及びアンモニアスリップが収納された装置であっても、ミキサ構造体を設けることなく、排ガスに還元剤を十分に混合させ、これらの混合物をＳＣＲ１０に対して均一に供給することが可能となる。   Also in the exhaust gas purifying apparatus 200 for such an internal combustion engine, the exhaust gas discharged from the internal combustion engine is introduced into the cylindrical case 104, passes through the DOC and the DPF 20, and reaches the space 104b. The exhaust gas that has reached the space 104b is introduced into the cylindrical pipe 202 connected to the downstream end 104a, and when passing through the cylindrical pipe 202, the exhaust gas is reduced from the reducing agent supply means 203. Agent is supplied. The exhaust gas supplied with the reducing agent is introduced into the cylindrical case 101 and swirled in the space 101b. Due to the swirling flow generated at this time, the exhaust gas is stirred and sufficiently mixed with the reducing agent, and these mixtures are uniformly supplied to the SCR 10. As a result, the exhaust gas purification efficiency by the SCR 10 is improved. In this way, even in an apparatus in which DOC, DPF, SCR, and ammonia slip are stored, a reducing agent is sufficiently mixed with exhaust gas without providing a mixer structure, and these mixtures are uniformly mixed with SCR10. It becomes possible to supply to.

本発明の第１実施形態に係る内燃機関用の排ガス浄化装置を示す概略図である。1 is a schematic diagram showing an exhaust gas purification apparatus for an internal combustion engine according to a first embodiment of the present invention. 図１のＡ−Ａ線矢視図である。It is an AA arrow line view of FIG. 本発明の第２実施形態に係る内燃機関用の排ガス浄化装置を示す概略図である。It is the schematic which shows the exhaust gas purification apparatus for internal combustion engines which concerns on 2nd Embodiment of this invention. 図３のＢ−Ｂ線矢視図である。It is a BB line arrow directional view of FIG.

符号の説明Explanation of symbols

１０ ＳＣＲ
１００，２００ 内燃機関用の排ガス浄化装置
１０１ 筒状ケース
１０１ｂ 空間
１０２，２０２ 筒状パイプ
１０２ａ 通気孔
１０３，２０３ 還元剤供給手段 10 SCR
100, 200 Exhaust gas purification device 101 for internal combustion engine Cylindrical case 101b Space 102, 202 Cylindrical pipe 102a Vent 103, 203 Reducing agent supply means

Claims (1)

閉塞された端部を有し、当該端部から離れた状態でＳＣＲが内部に収納されており、前記端部と前記ＳＣＲの上流側端部との間に空間が形成されている筒状ケースと、
前記筒状ケースの側筒部の領域のうち前記端部と前記上流側端部との間の領域において、当該側筒部に対して接線方向に連結され、内部に内燃機関から排出された排ガスが流れる筒状パイプと、
前記筒状パイプ内を流れる前記排ガスに還元剤を供給する還元剤供給手段と、
を備えることを特徴とする内燃機関用の排ガス浄化装置。 A cylindrical case having a closed end, in which the SCR is housed in a state separated from the end, and a space is formed between the end and the upstream end of the SCR When,
Exhaust gas exhausted from the internal combustion engine in the region between the end portion and the upstream end portion in the region between the end portion and the upstream end portion in a tangential direction with respect to the side tube portion. A cylindrical pipe through which
Reducing agent supply means for supplying a reducing agent to the exhaust gas flowing in the cylindrical pipe;
An exhaust gas purification apparatus for an internal combustion engine, comprising:
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010089924A1 (en) * 2009-02-03 2010-08-12 ヤンマー株式会社 Exhaust purification apparatus
WO2011148806A1 (en) * 2010-05-25 2011-12-01 いすゞ自動車株式会社 Exhaust gas purification device
CN102797540A (en) * 2011-05-27 2012-11-28 上海天纳克排气系统有限公司 Selective catalytic reduction (SCR) postprocessor for engineering machine
DE102012000597A1 (en) * 2012-01-14 2013-07-18 Daimler Ag Exhaust system of an internal combustion engine and method for processing a reductant introduced in engine exhaust gas
WO2013105336A1 (en) 2012-01-12 2013-07-18 日野自動車株式会社 Exhaust gas purification device
DE102012008556A1 (en) * 2012-04-27 2013-10-31 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Device for exhaust gas aftertreatment of exhaust gas mass flow in exhaust gas line, has injector which is arranged in exhaust gas line for supplying reducing agent in exhaust gas mass flow, where exhaust gas line segment has inlet
CN103422952A (en) * 2012-05-25 2013-12-04 天纳克（中国）有限公司 Integrated semiconductor control rectifier (SCR) system for automobile
JP2014159764A (en) * 2013-02-19 2014-09-04 Yanmar Co Ltd Engine device
WO2015093521A1 (en) 2013-12-18 2015-06-25 日野自動車株式会社 Exhaust purification device
US9308495B2 (en) 2012-07-25 2016-04-12 Hino Motors, Ltd. Exhaust purifier
JP2016188599A (en) * 2015-03-30 2016-11-04 トヨタ自動車株式会社 Structure of exhaust pipe
US9534525B2 (en) 2015-05-27 2017-01-03 Tenneco Automotive Operating Company Inc. Mixer assembly for exhaust aftertreatment system
US10100700B2 (en) 2015-06-29 2018-10-16 Tenneco Automotive Operating Company Inc. Cantilevered flow distributing apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0742545A (en) * 1993-07-27 1995-02-10 Tokuichiro Hasegawa Exhaust gas processing device for engine
JP2003074335A (en) * 2001-06-22 2003-03-12 Komatsu Ltd Exhaust emission control device of internal combustion engine
JP2004514828A (en) * 2000-12-01 2004-05-20 フューエル　テック　インコーポレーテッド Selective catalytic reduction of NOx enabled by side-stream urea decomposition
JP2005288397A (en) * 2004-04-05 2005-10-20 Shuya Nagayama Tail gas denitrification apparatus using urea water
JP2007222819A (en) * 2006-02-24 2007-09-06 Komatsu Ltd Exhaust gas cleaning apparatus of internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0742545A (en) * 1993-07-27 1995-02-10 Tokuichiro Hasegawa Exhaust gas processing device for engine
JP2004514828A (en) * 2000-12-01 2004-05-20 フューエル　テック　インコーポレーテッド Selective catalytic reduction of NOx enabled by side-stream urea decomposition
JP2003074335A (en) * 2001-06-22 2003-03-12 Komatsu Ltd Exhaust emission control device of internal combustion engine
JP2005288397A (en) * 2004-04-05 2005-10-20 Shuya Nagayama Tail gas denitrification apparatus using urea water
JP2007222819A (en) * 2006-02-24 2007-09-06 Komatsu Ltd Exhaust gas cleaning apparatus of internal combustion engine

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8627653B2 (en) 2009-02-03 2014-01-14 Yanmar Co., Ltd. Exhaust purification apparatus
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CN102892988A (en) * 2010-05-25 2013-01-23 五十铃自动车株式会社 Exhaust gas purification device
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US8747761B2 (en) 2010-05-25 2014-06-10 Isuzu Motors Limited Exhaust gas purification device
CN102797540A (en) * 2011-05-27 2012-11-28 上海天纳克排气系统有限公司 Selective catalytic reduction (SCR) postprocessor for engineering machine
WO2013105336A1 (en) 2012-01-12 2013-07-18 日野自動車株式会社 Exhaust gas purification device
US9604170B2 (en) 2012-01-12 2017-03-28 Hino Motors, Ltd. Exhaust gas purification device
DE102012000597A1 (en) * 2012-01-14 2013-07-18 Daimler Ag Exhaust system of an internal combustion engine and method for processing a reductant introduced in engine exhaust gas
WO2013104544A3 (en) * 2012-01-14 2013-09-26 Daimler Ag Exhaust gas system of an internal combustion engine, and method for preparing a reducing agent which is introduced into the internal combustion engine exhaust gas
JP2015508469A (en) * 2012-01-14 2015-03-19 ダイムラー・アクチェンゲゼルシャフトＤａｉｍｌｅｒ ＡＧ Internal combustion engine exhaust gas system and method for formulating a reducing agent added to an internal combustion engine exhaust gas
US9157358B2 (en) 2012-01-14 2015-10-13 Daimler Ag Exhaust gas system of an internal combustion engine, and method for preparing a reducing agent which is introduced into the internal combustion engine exhaust gas
DE102012008556A1 (en) * 2012-04-27 2013-10-31 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Device for exhaust gas aftertreatment of exhaust gas mass flow in exhaust gas line, has injector which is arranged in exhaust gas line for supplying reducing agent in exhaust gas mass flow, where exhaust gas line segment has inlet
DE102012008556B4 (en) * 2012-04-27 2016-06-30 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Apparatus and method for exhaust aftertreatment
CN103422952A (en) * 2012-05-25 2013-12-04 天纳克（中国）有限公司 Integrated semiconductor control rectifier (SCR) system for automobile
US9308495B2 (en) 2012-07-25 2016-04-12 Hino Motors, Ltd. Exhaust purifier
JP2014159764A (en) * 2013-02-19 2014-09-04 Yanmar Co Ltd Engine device
WO2015093521A1 (en) 2013-12-18 2015-06-25 日野自動車株式会社 Exhaust purification device
US10030560B2 (en) 2013-12-18 2018-07-24 Hino Motors, Ltd. Exhaust purification device
JP2016188599A (en) * 2015-03-30 2016-11-04 トヨタ自動車株式会社 Structure of exhaust pipe
US9534525B2 (en) 2015-05-27 2017-01-03 Tenneco Automotive Operating Company Inc. Mixer assembly for exhaust aftertreatment system
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