CN101713315B - 排气后处理系统 - Google Patents
排气后处理系统 Download PDFInfo
- Publication number
- CN101713315B CN101713315B CN2009101787723A CN200910178772A CN101713315B CN 101713315 B CN101713315 B CN 101713315B CN 2009101787723 A CN2009101787723 A CN 2009101787723A CN 200910178772 A CN200910178772 A CN 200910178772A CN 101713315 B CN101713315 B CN 101713315B
- Authority
- CN
- China
- Prior art keywords
- reducing agent
- reservoir
- heating
- fluid
- emission control
- 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.)
- Expired - Fee Related
Links
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 79
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 239000012530 fluid Substances 0.000 claims description 43
- 239000007921 spray Substances 0.000 claims description 21
- 239000003054 catalyst Substances 0.000 claims description 17
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000010531 catalytic reduction reaction Methods 0.000 claims 2
- 238000006722 reduction reaction Methods 0.000 claims 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 206010051640 Ammoniuria Diseases 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000010257 thawing Methods 0.000 description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 239000004202 carbamide Substances 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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
- 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
- F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
-
- 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
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
-
- 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
- F01N2610/1433—Pumps
-
- 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)
Abstract
本发明涉及排气后处理系统。一种用于排放控制系统的还原剂贮存器，还原剂贮存器具有：泵组件，该泵组件具有适于从贮存器抽取还原剂的吸入部；加热元件，该加热元件与泵组件关联以加热还原剂；以及出口，该出口用于将加热的还原剂输送至排放控制系统。喷嘴组件将加热的还原剂的一部分喷射到贮存器中以融化冻结的还原剂。
Description
技术领域
本发明涉及用于柴油机和其它稀燃发动机的排放控制系统，更具体地涉及改进的还原剂储存系统。背景技术当前的排放控制规定使得在汽车的排放系统中使用催化器成为必要，以将在发动机运转期间产生的常规排放组分，例如一氧化碳(CO)、碳氢化合物(HC)以及氮氧化物(NOx)，转换成非常规排气。
配备有柴油机和稀燃汽油机的车辆可提供燃料经济性提高的优点，然而，在这样的系统中由于排气中的高含氧量而使对NOx排放的控制成为挑战。选择性催化还原(SCR)催化器公知可实现高NOx转换效率，在该催化器中，通过将还原剂(例如富氨尿素)主动喷射到进入该催化器的排气混合物，而通过通常由普通金属构成的催化器将NOx连续还原成氮气(N2)。
在至此所述的系统中，富氨尿素是储存在车辆中的含水尿素贮存器中的水溶液，其经由流体线路和泵被输送至位于车辆的排放系统中的喷射器中。尿素的冻结温度通常在12华氏度的范围内，这可能对于冬季SCR系统的操作形成挑战。已发现在贮存器内的潜水泵模块中包括加热元件的系统因由于整个流体的热传递差而在贮存器内具有电阻器栅加热垫，所以操作方式不太令人满意。发明内容
本发明涉及用于柴油机和其它稀燃发动机的排放控制系统，并且更具体地涉及改进的还原剂储存系统。选择性催化还原(SCR)催化器公知可实现高NOx转换效率，在该催化器中，通过将还原剂(例如富氨尿素)主动喷射到进入该催化器的排气混合物，而通过通常由普通金属构成的催化器将NOx连续还原成氮气(N2)。
可以为富氨尿素的还原剂是储存在车辆中的还原剂贮存器中的水溶液。流体经由流体线路和泵被输送至与车辆的排放系统连通的喷射器。尿素溶液的冻结温度通常在12华氏度的范围内，这可能对于冬季SCR系统的操作形成挑战。这里描述的系统包括贮存器，该贮存器在示例性实施方式中包括罐内(in-tank)或局部可潜水的还原剂泵组件，泵组件具有与其关联的加热元件。该加热元件操作成在寒冷天气的操作期间加热贮存器中的液体以避免冻结，或者融化冻结的还原剂。泵组件还关联有流体喷洒器，喷洒器操作成抽吸流体经过加热元件，并使流体通过喷嘴散布离开泵的外部。该流体喷洒器将加热后的流体散布整个贮存器，致使流体循环至较冷区域，否则这些区域不受加热元件的影响。结果是使得还原剂的融化更有效。附图说明
在以下结合附图的详细说明中将根据优选示例性实施方式更具体地描述本发明以及其进一步的目的和优点，在附图中：
图1是实施本发明特征的内燃机用排放控制系统的示意图；
图2是通过图1的排放控制系统的还原剂贮存器的剖视图；
图3是图1的排放控制系统的还原剂贮存器的俯视图，其上示出了还原剂喷洒型式；
图4是通过图1的排放控制系统的还原剂贮存器的第二实施方式的剖视图；以及
图5是图2至图4的还原剂贮存器的泵组件的示意剖视图。具体实施方式
如图1中所示，示出了用于通常用在机动车辆应用中的柴油机和其它稀燃发动机12的排放控制系统10。该排放控制系统包括选择性催化还原(SCR)催化器14，在该催化器中，通过将还原剂(例如富氨尿素)主动喷射到进入该催化器的排气混合物，而通过通常由普通金属构成的催化器将发动机排气中的NOx成分连续还原成氮气(N2)。还原剂储存在还原剂贮存器16中(图2和图3)，并通过流体线路22由泵18输送至位于SCR催化器14上游的喷射器20。
在本发明的示例性实施方式中，还原剂贮存器16包括罐内或局部可潜水的还原剂泵组件24，还原剂泵组件24具有与流体上升道或基部28关联的输送模块26，该流体上升道或基部28从与贮存器16的底部30相邻的位置轴向延伸至贮存器16的顶部32。基部28包括环形安装环34，该安装环34通过与贮存器顶部32中的开口36接合而将泵组件24固定至贮存器。位于基部28中的还原剂吸入部38优选与罐的底部30相邻，以确保还原剂40的有效吹扫。可为含水尿素形式的还原剂40的冻结温度通常在12华氏度的范围内。加热元件42与泵组件24关联并操作成在车辆在寒冷天气运转期间温暖和/或融化还原剂40。在优选实施方式中，加热元件42与基部28关联(图2)，并加热通过还原剂吸入部38抽取到泵组件中的还原剂。加热元件42还可加热基部28，致使基部周围的还原剂40局部升温。
还与泵组件关联的是流体喷洒组件，该流体喷洒组件在示例性实施方式中包括喷嘴喷洒环44。喷洒环44绕基部28的上部接近还原剂的上流体面29布置，并与泵18和加热元件42关联操作以通过一个或多个喷嘴43关于还原剂贮存器的内部，以喷洒型式46喷洒加热的液体还原剂41，喷洒型式46构造成使加热的流体在贮存器内从位于中央的泵组件24朝贮存器的外区域径向向外运动，从而利用由加热元件42产生的热来温暖和/或融化整个贮存器的还原剂。流体喷洒器在整个贮存器中散布加热的流体，致使热从较温暖的流体传递到较冷区域，否则这些区域不受加热元件的影响。其结果是使还原剂的融化更有效。可能期望增加输送至已加热燃料的热，从而提高本发明的温暖/融化能力。在这样的情况下，构想喷嘴喷洒环还可以包括补充加热元件，补充加热元件可操作以进一步加热离开喷嘴喷洒环44的流体。
在图4和图5中示出的本发明的另一示例性实施方式中，其中本发明的相同元件用与已述的相同的附图标记表示，流体循环组件具有喷嘴循环环144，喷嘴循环环144绕基部28的周边布置，位于贮存器16的上流体面29的下方。循环环144可沿着基部28的任何轴向位置布置，并优选位于还原剂吸入部38附近。循环环与泵18和加热元件42关联操作以将加热的液体还原剂41喷射到还原剂中而建立流体循环，该流体循环操作成使加热的流体在贮存器内从位于中央的泵组件24朝贮存器的外区域径向向外运动，从而利用由加热元件42产生的热温暖和/或融化整个贮存器的还原剂。该流体循环在整个贮存器中散布热的流体，致使热从较温暖的流体传递到较冷区域，否则这些区域不受加热元件的影响。其结果是使还原剂的融化更有效。可能期望增加输送至已加热燃料的热，从而提高本发明的温暖/融化能力。在这样的情况下，构想喷嘴喷洒环还可以包括补充加热元件，补充加热元件可操作以进一步加热离开喷嘴喷洒环144的流体。
尽管已关于当前认为最实际最优选的实施方式描述了本发明，但是应理解本发明不局限于所公开的实施方式，而是相反，是为了覆盖包含于所附权利要求的精神和范围内的各种变型和等同物。
Claims (9)
1.一种用于排放控制系统的还原剂贮存器，该还原剂贮存器包括：
泵组件，该泵组件具有适于从所述贮存器抽取还原剂的吸入部；
加热元件，该加热元件与所述泵组件关联以加热所述还原剂；
出口，该出口用于将加热的还原剂输送至所述排放控制系统；以及
流体喷洒组件，该流体喷洒组件包括喷洒环，所述喷洒环具有一个或多个喷嘴，所述一个或多个喷嘴构造成适于使所述加热的还原剂的一部分在所述还原剂贮存器内部以喷洒型式从所述泵组件朝向所述还原剂贮存器的外区域径向向外运动。
2.如权利要求1所述的还原剂贮存器，其中：
所述喷洒环位于所述还原剂的上流体面附近，并且可操作成在还原剂表面的上方形成所述喷洒型式，以在整个所述贮存器散布加热的流体。
3.如权利要求2所述的还原剂贮存器，其中：
所述流体喷洒组件还包括位于所述还原剂的上流体面的下方的喷洒环，所述喷洒环具有一个或多个喷嘴，所述一个或多个喷嘴构造成适于使所述加热的还原剂的一部分在所述还原剂贮存器内部以喷洒型式从所述泵组件朝向所述还原剂贮存器的外区域径向向外运动，以在整个所述贮存器散布加热的流体。
4.如权利要求1所述的还原剂贮存器，其中：
所述喷洒环具有第二加热元件，该第二加热元件可操作成进一步加热从该喷洒环喷射的还原剂。
5.一种用于内燃机的排放控制系统，该排放控制系统包括：
选择性催化还原催化器，该催化器可操作成还原发动机排气中的NOx成分；
还原剂贮存器，该还原剂贮存器与所述排放控制系统相关联，并具有泵组件、适于从所述贮存器抽取还原剂的吸入部、与所述泵组件关联以加热所述还原剂的加热元件、用于将所述加热的还原剂输送至所述排放控制系统的出口以及流体喷洒组件，该流体喷洒组件包括喷洒环，所述喷洒环具有一个或多个喷嘴，所述一个或多个喷嘴构造成适于使所述加热的还原剂的一部分在所述还原剂贮存器内部以喷洒型式从所述泵组件朝向所述还原剂贮存器的外区域径向向外运动。
6.如权利要求5所述的排放控制系统，还包括：
还原剂喷射器，该还原剂喷射器与所述泵组件出口相连通以从其处接收还原剂，从而输送至所述催化还原催化器。
7.如权利要求5所述的排放控制系统，其中：
所述喷洒环位于所述还原剂的上流体面附近，并且可操作成在还原剂表面的上方形成所述喷洒型式，以在整个所述贮存器散布加热的流体。
8.如权利要求7所述的排放控制系统，其中：
所述流体喷洒组件还包括位于所述还原剂的上流体面的下方的喷洒环，所述喷洒环具有一个或多个喷嘴，所述一个或多个喷嘴构造成适于使所述加热的还原剂的一部分在所述还原剂贮存器内部以喷洒型式从所述泵组件朝向所述还原剂贮存器的外区域径向向外运动，以在整个所述贮存器散布加热的流体。
9.如权利要求5所述的排放控制系统，其中：
所述喷洒环具有第二加热元件，该第二加热元件可操作成进一步加热从该喷洒环喷射的还原剂。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/241298 | 2008-09-30 | ||
| US12/241,298 US8511067B2 (en) | 2008-09-30 | 2008-09-30 | Exhaust gas aftertreatment system |
| US12/241,298 | 2008-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101713315A CN101713315A (zh) | 2010-05-26 |
| CN101713315B true CN101713315B (zh) | 2012-12-05 |
Family
ID=42055937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101787723A Expired - Fee Related CN101713315B (zh) | 2008-09-30 | 2009-09-30 | 排气后处理系统 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US8511067B2 (zh) |
| CN (1) | CN101713315B (zh) |
| DE (1) | DE102009042980B4 (zh) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8402750B2 (en) * | 2010-12-07 | 2013-03-26 | Tenneco Automotive Operating Company Inc. | Reagent tank normalizing system |
| CN103201473B (zh) * | 2011-05-16 | 2015-06-03 | 苏州派格丽减排系统有限公司 | 集成式scr还原剂储存装置 |
| DE112011104704T5 (de) * | 2011-05-16 | 2013-10-31 | Suzhou Powergreen Emission Solution System Co., Ltd. | Ein integriertes SCR-Dosier- und Einspritzsystem |
| US20130000743A1 (en) * | 2011-06-29 | 2013-01-03 | Ti Group Automotive Systems, L.L.C. | Scr fluid distribution and circulation system |
| US20130000760A1 (en) * | 2011-06-29 | 2013-01-03 | Ti Group Automotive Systems, L.L.C. | Fluid distribution system and components thereof |
| US8689544B2 (en) | 2011-07-15 | 2014-04-08 | GM Global Technology Operations LLC | Emission control system for a vehicle |
| EP2708710A3 (en) * | 2012-09-13 | 2015-02-18 | TI Group Automotive Systems, L.L.C. | Fluid distribution system and components thereof |
| US9488145B2 (en) * | 2012-12-21 | 2016-11-08 | Inergy Automotive Systems Research (Societe Anonyme) | Vehicular liquid containment system and method for verifying integrity of same |
| US9512763B2 (en) | 2014-12-05 | 2016-12-06 | Caterpillar Inc. | Diesel exhaust fluid dosing system for diesel engine aftertreatment module |
| WO2018015281A1 (fr) | 2016-07-18 | 2018-01-25 | Plastic Omnium Advanced Innovation And Research | Réservoir à urée avec élément chauffant et profilé |
| US10215069B2 (en) * | 2016-08-18 | 2019-02-26 | Gm Globaly Technology Operations Llc | Pressure relief system for diesel exhaust fluid storage |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2541221A (en) * | 1945-11-27 | 1951-02-13 | Edwards George Wilfrid | Mixing, diluting, emulsifying, and the like apparatus |
| CN2358393Y (zh) * | 1999-02-25 | 2000-01-12 | 张俊峰 | 循环式加热器 |
| CN2388545Y (zh) * | 1999-07-20 | 2000-07-19 | 陈锦松 | 恒温加热式电热水器 |
| CN1832794A (zh) * | 2003-08-05 | 2006-09-13 | 恩格哈德公司 | 排放处理系统和使用scr过滤器的方法 |
| WO2008038509A1 (fr) * | 2006-09-26 | 2008-04-03 | Nissan Diesel Motor Co., Ltd. | Appareil de purification des gaz d'échappement pour moteur |
| WO2008040589A1 (de) * | 2006-10-04 | 2008-04-10 | Robert Bosch Gmbh | Tank zur bevorratung eines reduktionsmittels |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3638860A (en) * | 1970-05-26 | 1972-02-01 | Richard A Carlyon Jr | Agricultural apparatus |
| US4394966A (en) * | 1978-05-09 | 1983-07-26 | Snyder Industries, Inc. | Spraying apparatus having a fluid storage tank with agitator and anti-vortex tank fittings |
| US4723710A (en) * | 1986-08-08 | 1988-02-09 | Lucore Ii James C | Apparatus for spraying mixtures of solid and liquid materials |
| DE10031088C2 (de) * | 2000-06-30 | 2002-12-19 | Raymond A & Cie | Beheizbare Scheibenwaschdüse |
| DE10101364A1 (de) * | 2001-01-13 | 2002-07-18 | Fev Motorentech Gmbh | Verfahren zur Umwandlung eines festen stickstoffhaltigen Reduktionsmittels in eine Gasphase für die Reduktion von Stickoxiden in sauerstoffhaltigen Abgasen nach dem Prinzip der selektiven katalytischen Reduktion |
| US6857774B2 (en) * | 2002-08-02 | 2005-02-22 | Five Star Technologies, Inc. | Devices for cavitational mixing and pumping and methods of using same |
| US6928806B2 (en) * | 2002-11-21 | 2005-08-16 | Ford Global Technologies, Llc | Exhaust gas aftertreatment systems |
| DE112006001140B4 (de) * | 2005-06-04 | 2014-06-05 | Eichenauer Heizelemente Gmbh & Co. Kg | Harnstoffversorgungssystem für einen Abgasreinigungskatalysator und hierfür geeigneter Heizeinsatz |
| US7578321B2 (en) * | 2005-10-13 | 2009-08-25 | Ford Global Technologies, Llc | Freeze protection for on-board vehicle emissions treatment system |
-
2008
- 2008-09-30 US US12/241,298 patent/US8511067B2/en not_active Expired - Fee Related
-
2009
- 2009-09-25 DE DE102009042980.8A patent/DE102009042980B4/de not_active Expired - Fee Related
- 2009-09-30 CN CN2009101787723A patent/CN101713315B/zh not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2541221A (en) * | 1945-11-27 | 1951-02-13 | Edwards George Wilfrid | Mixing, diluting, emulsifying, and the like apparatus |
| CN2358393Y (zh) * | 1999-02-25 | 2000-01-12 | 张俊峰 | 循环式加热器 |
| CN2388545Y (zh) * | 1999-07-20 | 2000-07-19 | 陈锦松 | 恒温加热式电热水器 |
| CN1832794A (zh) * | 2003-08-05 | 2006-09-13 | 恩格哈德公司 | 排放处理系统和使用scr过滤器的方法 |
| WO2008038509A1 (fr) * | 2006-09-26 | 2008-04-03 | Nissan Diesel Motor Co., Ltd. | Appareil de purification des gaz d'échappement pour moteur |
| WO2008040589A1 (de) * | 2006-10-04 | 2008-04-10 | Robert Bosch Gmbh | Tank zur bevorratung eines reduktionsmittels |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009042980B4 (de) | 2015-10-22 |
| US8511067B2 (en) | 2013-08-20 |
| DE102009042980A1 (de) | 2010-05-06 |
| US20100077740A1 (en) | 2010-04-01 |
| CN101713315A (zh) | 2010-05-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101713315B (zh) | 排气后处理系统 | |
| US7509799B2 (en) | Engine exhaust gas treatment system and exhaust gas treatment process | |
| CN101035968B (zh) | 柴油机废气后处理装置再生系统 | |
| US20110131958A1 (en) | System and method for mitigating potential for formation of urea deposits in an engine exhaust system during cold ambient conditions | |
| US8683790B2 (en) | Nozzle diffuser mixer | |
| KR102197457B1 (ko) | 환원제 가열에 의한 자동차의 선택적 촉매 환원을 위한 환원제 분배 유닛 | |
| US20070048204A1 (en) | Flash injector for NH3-SCR NOx aftertreatment | |
| EP2975231B1 (en) | Reducing agent supplying device | |
| WO2005073527A1 (ja) | 内燃機関の排気浄化装置 | |
| CN101550860B (zh) | 处理来自发动机的排气的系统和方法 | |
| US20070119153A1 (en) | Superheated urea injection for aftertreatment applications | |
| EP2960454B1 (en) | Pressure differentiated exhaust gas aftertreatment device | |
| CN102191975A (zh) | 用于排气后处理的气体/液体混合装置 | |
| WO2017198292A1 (en) | An exhaust gas treatment system with inductive heating | |
| US20110083428A1 (en) | Scr mixer | |
| US8973349B2 (en) | Electronically heated hydrocarbon (HC) adsorber | |
| CN101737133A (zh) | 具有冷却和防堵塞的尿素水溶液喷射装置及方法 | |
| CN101268260A (zh) | 具有加热元件和蓄热器的喷嘴及将可氧化液体导入催化转换器或过滤器上游处的排放系统的方法 | |
| KR20170052861A (ko) | 환원제 분사 모듈의 냉각수 순환 시스템 및 이를 갖는 선택적 환원 촉매 시스템 | |
| KR101556330B1 (ko) | Scr 시스템용 우레아 공급장치 | |
| US20140041370A1 (en) | Exhaust Treatment System for Internal Combustion Engine | |
| US20150361842A1 (en) | Exhaust system for a vehicle | |
| EP3119999B1 (en) | Heating system for an exhaust gas treatment system | |
| KR101265059B1 (ko) | 연료분사장치 및 그를 구비한 배기가스 후처리 시스템 | |
| CN115977773A (zh) | 尾气后处理系统中柴油氧化催化器起燃的控制方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20200930 |