JP2008267288A - Exhaust emission control device - Google Patents
Exhaust emission control device Download PDFInfo
- Publication number
- JP2008267288A JP2008267288A JP2007112153A JP2007112153A JP2008267288A JP 2008267288 A JP2008267288 A JP 2008267288A JP 2007112153 A JP2007112153 A JP 2007112153A JP 2007112153 A JP2007112153 A JP 2007112153A JP 2008267288 A JP2008267288 A JP 2008267288A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust
- exhaust pipe
- reducing agent
- addition valve
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
本発明は、エンジンの排ガスを還元剤により浄化する排気浄化装置に関する。 The present invention relates to an exhaust purification device that purifies exhaust gas from an engine with a reducing agent.
従来から、エンジンの排ガスに含まれる窒素酸化物(NOx)を還元剤により還元して浄化する排気浄化装置が公知である。この還元剤は、例えば、尿素水であり、尿素の分解により発生するアンモニア(NH3)が、触媒によりNOxと反応して無害な窒素(N2)や水(H2O)を生成することで、NOxが浄化される。 2. Description of the Related Art Conventionally, exhaust gas purification apparatuses that reduce and purify nitrogen oxide (NO x ) contained in engine exhaust gas with a reducing agent are known. This reducing agent is, for example, urea water, and ammonia (NH 3 ) generated by decomposition of urea reacts with NO x by a catalyst to generate harmless nitrogen (N 2 ) and water (H 2 O). Thus, NO x is purified.
ところで、この排気浄化装置には、還元剤を噴射する添加弁と、噴射された還元剤を衝突により分散させる衝突分散機構とを備え、添加弁を排気管に直接装着するものがある(例えば、特許文献1参照)。この排気浄化装置によれば、添加弁の先端部は排気管の内部に突出し、還元剤は、この先端部に開口する噴孔から、直接、排気管の内部に噴射され、衝突分散機構により排ガス中に分散した後に触媒に導かれる。
このため、添加弁の先端部は、排ガスの直撃を受けて高温に加熱されるので、熱劣化したりデポジットが付着したりする虞がある。
For this reason, since the front-end | tip part of an addition valve receives the direct hit of exhaust gas and is heated to high temperature, there exists a possibility that heat deterioration or a deposit may adhere.
本発明は、上記の問題点を解決するためになされたものであり、その目的は、エンジンの排ガスを還元剤により浄化する排気浄化装置において、添加弁への排ガスの直撃を回避することにある。 The present invention has been made to solve the above-described problems, and an object of the present invention is to avoid a direct hit of exhaust gas on an addition valve in an exhaust purification device that purifies exhaust gas of an engine with a reducing agent. .
〔請求項1の手段〕
請求項1に記載の排気浄化装置は、排ガスが通る排気管と、排気管の内部に還元剤を噴射する添加弁とを備え、噴孔の開口部を有する添加弁の先端部が、排気管の内周面よりも外周側に配された状態で排気管の内部に臨む。
これにより、添加弁の先端部は、排気管の内部に突出しない状態で排気管の内部に臨むことができる。このため、添加弁は、排ガスの直撃を回避しつつ、排気管の内部に還元剤を噴射することができる。
[Means of Claim 1]
The exhaust emission control device according to claim 1 is provided with an exhaust pipe through which exhaust gas passes and an addition valve for injecting a reducing agent into the exhaust pipe, and a tip portion of the addition valve having an opening of an injection hole is an exhaust pipe. It faces the inside of the exhaust pipe in a state of being arranged on the outer peripheral side with respect to the inner peripheral surface.
Thereby, the front-end | tip part of an addition valve can face the inside of an exhaust pipe in the state which does not protrude inside the exhaust pipe. For this reason, the addition valve can inject the reducing agent into the exhaust pipe while avoiding the direct hit of the exhaust gas.
〔請求項2の手段〕
請求項2に記載の排気浄化装置は、排気管の内部で還元剤の噴射方向と交差する位置に配され、噴射された還元剤の衝突を受けるとともに衝突した還元剤を排ガス中に分散させる衝突分散機構を備える。
これにより、還元剤噴霧の微粒化を促進することができるので、還元剤を排ガス中に効率的に分散させることができる。
[Means of claim 2]
The exhaust emission control device according to
Thereby, since atomization of a reducing agent spray can be accelerated | stimulated, a reducing agent can be efficiently disperse | distributed in waste gas.
〔請求項3の手段〕
請求項3に記載の排気浄化装置によれば、添加弁は、排気管の管壁部と一体の装着部に装着される。
これにより、排気管の一部に添加弁および衝突分散機構を装備して、1つのモジュールを構成することができる。このため、添加弁および衝突分散機構の配置の自由度を高めることができる。
[Means of claim 3]
According to the exhaust purification device of the third aspect, the addition valve is mounted on the mounting portion integral with the tube wall portion of the exhaust pipe.
Thereby, a part of the exhaust pipe can be equipped with the addition valve and the collision dispersion mechanism to constitute one module. For this reason, the freedom degree of arrangement | positioning of an addition valve and a collision dispersion | distribution mechanism can be raised.
〔請求項4の手段〕
請求項4に記載の排気浄化装置によれば、添加弁は、排気管の軸方向に対して垂直に還元剤を噴射するように配され、衝突分散機構は、噴孔の開口部の直下に設けられている。
これにより、噴射された還元剤を確実に衝突分散機構に衝突させて分散効率を高めることができる。
[Means of claim 4]
According to the exhaust purification device of the fourth aspect, the addition valve is arranged so as to inject the reducing agent perpendicular to the axial direction of the exhaust pipe, and the collision dispersion mechanism is located immediately below the opening of the injection hole. Is provided.
Thereby, the injected reducing agent can be reliably caused to collide with the collision dispersion mechanism to increase the dispersion efficiency.
〔請求項5の手段〕
請求項5に記載の排気浄化装置によれば、衝突分散機構は、排ガスの流れを旋回流に変換する。
これにより、還元剤の排ガス中への分散が、さらに効率的になる。
[Means of claim 5]
According to the exhaust emission control device of the fifth aspect, the collision dispersion mechanism converts the flow of the exhaust gas into a swirling flow.
Thereby, the dispersion of the reducing agent in the exhaust gas becomes more efficient.
最良の形態1の排気浄化装置は、排ガスが通る排気管と、排気管の内部に還元剤を噴射する添加弁とを備え、噴孔の開口部を有する添加弁の先端部が、排気管の内周面よりも外周側に配された状態で排気管の内部に臨む。
また、この排気浄化装置は、排気管の内部で還元剤の噴射方向と交差する位置に配され、噴射された還元剤の衝突を受けるとともに衝突した還元剤を排ガス中に分散させる衝突分散機構を備える。
The exhaust emission control device of the best mode 1 includes an exhaust pipe through which exhaust gas passes, and an addition valve that injects a reducing agent into the exhaust pipe, and the tip of the addition valve having an opening of an injection hole is provided on the exhaust pipe. It faces the inside of the exhaust pipe in a state of being arranged on the outer peripheral side with respect to the inner peripheral surface.
In addition, this exhaust purification device is arranged at a position intersecting the injection direction of the reducing agent inside the exhaust pipe, and receives a collision dispersion mechanism that receives the collision of the injected reducing agent and disperses the colliding reducing agent in the exhaust gas. Prepare.
そして、この排気浄化装置によれば、添加弁は、排気管の管壁部と一体の装着部に装着される。また、添加弁は、排気管の軸方向に対して垂直に還元剤を噴射するように配され、衝突分散機構は、噴孔の開口部の直下に設けられている。さらに、衝突分散機構は、排ガスの流れを旋回流に変換する。 And according to this exhaust gas purification device, the addition valve is mounted on the mounting portion integral with the tube wall portion of the exhaust pipe. The addition valve is arranged so as to inject the reducing agent perpendicular to the axial direction of the exhaust pipe, and the collision dispersion mechanism is provided immediately below the opening of the injection hole. Further, the collision dispersion mechanism converts the exhaust gas flow into a swirl flow.
〔実施例1の構成〕
実施例1の排気浄化装置1の構成を、図1および図2を用いて説明する。
排気浄化装置1は、エンジンの排ガスに還元剤を噴射供給して排ガスに含まれる窒素酸化物(NOx)を還元して浄化するものである。還元剤は、例えば、尿素水であり、尿素の分解により発生するアンモニア(NH3)が、触媒によりNOxと反応して無害な窒素(N2)や水(H2O)を生成することで、NOxが浄化される。
[Configuration of Example 1]
The configuration of the exhaust emission control device 1 according to the first embodiment will be described with reference to FIGS. 1 and 2.
The exhaust emission control device 1 supplies and supplies a reducing agent to exhaust gas from an engine to reduce and purify nitrogen oxides (NO x ) contained in the exhaust gas. The reducing agent is, for example, urea water, and ammonia (NH 3 ) generated by decomposition of urea reacts with NO x by a catalyst to generate harmless nitrogen (N 2 ) and water (H 2 O). Thus, NO x is purified.
排気浄化装置1は、排ガスが通る排気管2と、排気管2の内部に還元剤を噴射する添加弁3と、所定のタンク4から還元剤を吸引して添加弁3の方に吐出する供給ポンプ5と、噴射された還元剤を衝突により排ガス中に分散させる衝突分散機構6と、添加弁3や供給ポンプ5等の作動を制御する電子制御装置(ECU)7とを備える。
なお、ECU7は、制御機能および演算機能を有するCPU、ROMおよびRAM等の記憶装置、入力装置ならびに出力装置等により構成される周知のマイクロコンピュータである。
The exhaust gas purification apparatus 1 includes an
The ECU 7 is a well-known microcomputer including a CPU having a control function and an arithmetic function, a storage device such as a ROM and a RAM, an input device, an output device, and the like.
排気管2は、触媒よりも上流側の排ガス流路の一部を形成する。また、排気管2は、軸方向の長さが10cm程度となるように管壁部10が設けられ、さらに、管壁部10の両端に他の排ガス流路部材との接続部をなすフランジ11が設けられている。そして、排気管2に添加弁3が装着されるとともに衝突分散機構6が設けられることで、排気管2、添加弁3および衝突分散機構6は1つのモジュールを構成する。
The
ここで、添加弁3が装着される装着部12は、管壁部10と一体に設けられて、排気管2の軸方向に垂直かつ図2の図示上方に突出する筒状をなす。そして、装着部12の内部は、排気管2の内部に連通しており、添加弁3は、装着部12の内部に先端部13が挿入された状態で排気管2に装着される。
Here, the
添加弁3は、供給ポンプ5から吐出された還元剤を内部に受け入れるとともに、受け入れた還元剤を先端部13に導いて先端に開口する噴孔(図示せず)から噴射する。ここで、添加弁3は、排気管2の軸方向に対して垂直に還元剤を噴射するように装着部12に装着されている。また、添加弁3の先端部13は、上記のように装着部12の内部に収容され、管壁部10の内周面よりも外周側に存在するように配されて排気管2の内部に臨む。
The addition valve 3 receives the reducing agent discharged from the supply pump 5 inside, and guides the received reducing agent to the
なお、添加弁3は、例えば、ソレノイドコイル(図示せず)への通電により生じる磁気吸引力により弁体(図示せず)を駆動して噴孔を開放する電磁ソレノイド弁である。また、添加弁3の内部に供給された還元剤の内で噴射されなかった還元剤は、タンク4に戻される。 The addition valve 3 is, for example, an electromagnetic solenoid valve that opens a nozzle hole by driving a valve body (not shown) by a magnetic attractive force generated by energizing a solenoid coil (not shown). Further, the reducing agent that has not been injected among the reducing agents supplied into the addition valve 3 is returned to the tank 4.
衝突分散機構6は、噴孔の開口部の直下、すなわち排気管2の内部で還元剤の噴射方向と交差する位置に設けられ、例えば、90度の中心角を有する略同一径の4つの扇形板状のフィン16、17、18、19からなる。
The
4つのフィン16、17、18、19は、図2(a)に示す排気管2の円状の内部断面を4等分した左上、右上、右下、左下の各々の領域に配されている。そして、左上、右下のフィン16、18は、各々の扇形の2辺の内で左右方向に平行な1辺を回転中心として下流側に回転傾斜するように設けられ、右上、左下のフィン17、19は、各々、上下方向に平行な1辺を回転中心として下流側に回転傾斜するように設けられている。このため、排ガスの流れは、衝突分散機構6を通過することにより、排気管2の軸方向に直進する直線流から周方向に旋回する旋回流に変換される。
The four
ここで、装着部12は、図2(a)の図示右側に偏在するように設けられており、還元剤の噴射方向は主に右下のフィン18と交差する。このため、噴射された還元剤は、フィン18に衝突し、添加弁3の直下に向かう方向から排気管2の軸方向を下流側に向かう方向に進行方向を変える。そして、下流側に向かう還元剤は、排ガスの旋回流に乗り排ガス中に分散しながら触媒に導かれる。
Here, the mounting
〔実施例1の効果〕
実施例1の排気浄化装置1は、排ガスが通る排気管2と、排気管2の内部に還元剤を噴射する添加弁3とを備え、噴孔が開口する添加弁3の先端部13は、管壁部10の内周面よりも外周側に存在するように配されて排気管2の内部に臨む。
これにより、添加弁3の先端部13は、排気管2の内部に突出しない状態で排気管2の内部に臨むことができる。このため、添加弁3は、排ガスの直撃を回避しつつ、排気管2の内部に還元剤を噴射することができる。
[Effect of Example 1]
The exhaust emission control device 1 according to the first embodiment includes an
Thereby, the front-end | tip
また、排気浄化装置1は、噴射された還元剤の衝突を受けるとともに衝突した還元剤を排ガス中に分散させる衝突分散機構6を備え、衝突分散機構6は、排気管2の内部で還元剤の噴射方向と交差する位置に配される。
これにより、還元剤噴霧の微粒化を促進することができるので、還元剤を排ガス中に効率的に分散させることができる。
The exhaust emission control device 1 also includes a
Thereby, since atomization of a reducing agent spray can be accelerated | stimulated, a reducing agent can be efficiently disperse | distributed in waste gas.
また、排気管2に添加弁3が装着されるとともに衝突分散機構6が設けられることで、排気管2、添加弁3および衝突分散機構6は1つのモジュールを構成する。
これにより、添加弁3および衝突分散機構6の配置の自由度を高めることができる。
Further, the addition pipe 3 is attached to the
Thereby, the freedom degree of arrangement | positioning of the addition valve 3 and the collision dispersion |
また、添加弁3は、排気管2の軸方向に対して垂直に還元剤を噴射するように配され、衝突分散機構6は、噴孔の開口部の直下に設けられている。
これにより、噴射された還元剤を確実に衝突分散機構6に衝突させて分散効率を高めることができる。
さらに、衝突分散機構6は、排ガスの流れを旋回流に変換するため、還元剤の排ガス中への分散がより効率的になる。
The addition valve 3 is arranged so as to inject the reducing agent perpendicular to the axial direction of the
As a result, the injected reducing agent can be reliably caused to collide with the
Furthermore, since the
〔変形例〕
実施例1の排気浄化装置1は、衝突分散機構6により還元剤噴霧の微粒化を促進するものであったが、排気浄化装置1に衝突分散機構6を装備しなくてもよい。
また、添加弁3は、排気管2の軸方向に対して垂直に還元剤を噴射するものであったが、軸方向に対して垂直以外の傾斜角を有する方向から噴射できるように添加弁3を配してもよい。
[Modification]
Although the exhaust purification device 1 of the first embodiment promotes atomization of the reducing agent spray by the
The addition valve 3 injects the reducing agent perpendicular to the axial direction of the
1 排気浄化装置
2 排気管
3 添加弁
6 衝突分散機構
10 管壁部
12 装着部
13 先端部
DESCRIPTION OF SYMBOLS 1
Claims (5)
噴孔の開口部を有する前記添加弁の先端部が、前記排気管の内周面よりも外周側に配された状態で前記排気管の内部に臨むことを特徴とする排気浄化装置。 An exhaust pipe through which exhaust gas passes and an addition valve that injects a reducing agent into the exhaust pipe;
An exhaust emission control device characterized in that a tip end portion of the addition valve having an opening of an injection hole faces the inside of the exhaust pipe in a state of being arranged on the outer peripheral side with respect to the inner peripheral surface of the exhaust pipe.
前記排気管の内部で還元剤の噴射方向と交差する位置に配され、噴射された還元剤の衝突を受けるとともに衝突した還元剤を排ガス中に分散させる衝突分散機構を備えることを特徴とする排気浄化装置。 The exhaust emission control device according to claim 1,
Exhaust gas provided with a collision dispersion mechanism that is disposed in a position intersecting with the injection direction of the reducing agent inside the exhaust pipe, receives a collision of the injected reducing agent, and disperses the colliding reducing agent in the exhaust gas. Purification equipment.
前記添加弁は、前記排気管の管壁部と一体の装着部に装着されることを特徴とする排気浄化装置。 The exhaust emission control device according to claim 2,
The exhaust purification apparatus according to claim 1, wherein the addition valve is attached to a mounting portion integral with a pipe wall portion of the exhaust pipe.
前記添加弁は、前記排気管の軸方向に対して垂直に還元剤を噴射するように配され、
前記衝突分散機構は、前記噴孔の開口部の直下に設けられていることを特徴とする排気浄化装置。 The exhaust emission control device according to claim 2 or 3,
The addition valve is arranged to inject a reducing agent perpendicular to the axial direction of the exhaust pipe,
The exhaust gas purification apparatus, wherein the collision dispersion mechanism is provided immediately below the opening of the nozzle hole.
前記衝突分散機構は、排ガスの流れを旋回流に変換することを特徴とする排気浄化装置。 The exhaust emission control device according to any one of claims 2 to 4,
The exhaust gas purification apparatus characterized in that the collision dispersion mechanism converts a flow of exhaust gas into a swirling flow.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007112153A JP4397402B2 (en) | 2007-04-20 | 2007-04-20 | Exhaust purification device |
US12/104,566 US20080256931A1 (en) | 2007-04-20 | 2008-04-17 | Exhaust emission control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007112153A JP4397402B2 (en) | 2007-04-20 | 2007-04-20 | Exhaust purification device |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008267288A true JP2008267288A (en) | 2008-11-06 |
JP4397402B2 JP4397402B2 (en) | 2010-01-13 |
Family
ID=39870838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007112153A Expired - Fee Related JP4397402B2 (en) | 2007-04-20 | 2007-04-20 | Exhaust purification device |
Country Status (2)
Country | Link |
---|---|
US (1) | US20080256931A1 (en) |
JP (1) | JP4397402B2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008001547U1 (en) | 2007-07-24 | 2008-04-10 | Emcon Technologies Germany (Augsburg) Gmbh | Assembly for introducing a reducing agent into the exhaust pipe of an exhaust system of an internal combustion engine |
US9441516B2 (en) * | 2009-09-22 | 2016-09-13 | Ford Global Technologies, Llc | Method for NOx reduction |
US8689854B2 (en) * | 2011-02-22 | 2014-04-08 | Deere & Company | Decomposition conduit fabrication method |
FR2984953B1 (en) * | 2011-12-23 | 2015-04-10 | Faurecia Systemes Dechappement | MODULE FOR INJECTING AND DISPENSING AN ADDITIVE IN A GAS STREAM |
DE202013006962U1 (en) | 2013-08-05 | 2013-08-28 | Tenneco Gmbh | mixing chamber |
DE102015103425B3 (en) | 2015-03-09 | 2016-05-19 | Tenneco Gmbh | mixing device |
WO2016176076A1 (en) | 2015-04-30 | 2016-11-03 | Faurecia Emissions Control Technologies, Usa, Llc | Full rotation mixer |
DE112016007361T5 (en) | 2016-10-21 | 2019-07-04 | Faurecia Emissions Control Technologies, Usa, Llc | Reductant mixer |
US10787946B2 (en) | 2018-09-19 | 2020-09-29 | Faurecia Emissions Control Technologies, Usa, Llc | Heated dosing mixer |
US11208934B2 (en) | 2019-02-25 | 2021-12-28 | Cummins Emission Solutions Inc. | Systems and methods for mixing exhaust gas and reductant |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5237865A (en) * | 1987-08-17 | 1993-08-24 | Kabushiki Kaisha Toshiba | Flow rate measuring apparatus |
US5992141A (en) * | 1996-04-02 | 1999-11-30 | Kleen Air Systems, Inc. | Ammonia injection in NOx control |
US6497402B2 (en) * | 2001-03-30 | 2002-12-24 | Environmental Dynamics, Inc. | Diffuser mounting system for aeration of liquids |
DE10131803A1 (en) * | 2001-06-30 | 2003-05-28 | Bosch Gmbh Robert | Mixing device for an exhaust gas cleaning system |
US6449947B1 (en) * | 2001-10-17 | 2002-09-17 | Fleetguard, Inc. | Low pressure injection and turbulent mixing in selective catalytic reduction system |
JP2004324587A (en) * | 2003-04-25 | 2004-11-18 | Mitsubishi Fuso Truck & Bus Corp | Emission control device of internal combustion engine |
JP2007032472A (en) * | 2005-07-28 | 2007-02-08 | Hitachi Ltd | Exhaust gas treatment device using urea water |
US7533520B2 (en) * | 2006-04-24 | 2009-05-19 | Fleetguard, Inc. | Exhaust aftertreatment mixer with stamped muffler flange |
-
2007
- 2007-04-20 JP JP2007112153A patent/JP4397402B2/en not_active Expired - Fee Related
-
2008
- 2008-04-17 US US12/104,566 patent/US20080256931A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
JP4397402B2 (en) | 2010-01-13 |
US20080256931A1 (en) | 2008-10-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4397402B2 (en) | Exhaust purification device | |
JP4888171B2 (en) | Exhaust purification device | |
JP4706631B2 (en) | Exhaust purification device | |
CN100504047C (en) | Muffler device with exhaust gas purifying function | |
US7059118B2 (en) | Mixing device for an exhaust gas purification system | |
US20110079003A1 (en) | Reductant nozzle indentation mount | |
JP2006029233A (en) | Exhaust emission control device for engine | |
WO2013099313A1 (en) | Reducing agent aqueous solution mixing device and exhaust gas after-treatment device | |
JP2005127271A (en) | Urea water vaporizer | |
JP2009024629A (en) | Exhaust emission control system of internal combustion engine | |
JP3715985B1 (en) | Liquid reducing agent injection nozzle structure | |
JP2013133775A (en) | Reducing agent aqueous solution mixing device and exhaust gas post-treatment device | |
JP2007198316A (en) | Device and method for controlling exhaust gas of internal combustion engine | |
JP2011032970A (en) | Exhaust emission control device of engine | |
JP2009085179A (en) | Additive distribution board structure in exhaust passage | |
JP5500909B2 (en) | Exhaust purification device | |
JP2009085050A (en) | Additive injection valve, additive injection device and exhaust emission control system | |
JP2010144569A (en) | Selective reduction catalyst device | |
JP2009138592A (en) | Additive distribution board structure of exhaust passage | |
CN108678843A (en) | A kind of diesel SCR catalytic exhaust apparatus | |
JP2009030561A (en) | Exhaust emission control device for internal combustion engine | |
JP6182500B2 (en) | Exhaust gas purification device | |
JP2008075603A (en) | Structure of liquid reducer jetting nozzle | |
CN105765189A (en) | Injection module and exhaust system having injection module | |
WO2020110938A1 (en) | Mixing member, exhaust purification device and vehicle |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20080912 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20081125 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090109 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090602 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090730 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090731 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20091020 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20091020 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121030 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121030 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131030 Year of fee payment: 4 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |