CN101563529A - 用于排气后处理装置的流体注射和混合系统 - Google Patents

用于排气后处理装置的流体注射和混合系统 Download PDF

Info

Publication number
CN101563529A
CN101563529A CNA2007800460272A CN200780046027A CN101563529A CN 101563529 A CN101563529 A CN 101563529A CN A2007800460272 A CNA2007800460272 A CN A2007800460272A CN 200780046027 A CN200780046027 A CN 200780046027A CN 101563529 A CN101563529 A CN 101563529A
Authority
CN
China
Prior art keywords
fluid
mixing chamber
treatment device
exhaust
conduit
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.)
Pending
Application number
CNA2007800460272A
Other languages
English (en)
Inventor
马库斯·舒斯特
特德·G·哥穆尔卡
萨沙·哈弗坎普
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tenneco Automotive Operating Co Inc
Original Assignee
Tenneco Automotive Operating Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tenneco Automotive Operating Co Inc filed Critical Tenneco Automotive Operating Co Inc
Publication of CN101563529A publication Critical patent/CN101563529A/zh
Pending legal-status Critical Current

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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • 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
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • 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
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • 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
    • 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
    • F01N3/30—Arrangements for supply of additional air
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
    • 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
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • 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
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

一种用于将二次流体应用于车辆的排气后处理装置的系统，利用联接的混合腔室来接收车辆排气流的一部分。二次流体源联接于所述混合腔室并且流体分配构件位于所述排气后处理装置上游的中间排气流导管中。所述流体分配构件朝所述后处理装置的上游面带来流体流的预选模式。

Description

用于排气后处理装置的流体注射和混合系统
相关申请的交叉引用
本申请要求2007年9月27日提交的美国专利申请No.11/862,293以及2006年12月14日提交的美国临时申请No.60/874,921的权益，所述申请通过参考的方式在此引入。
技术领域
本公开涉及排气后处理装置。更具体地，本公开有关于通过这种装置对排放物进行的再生、氧化或还原。
背景技术
本节的描述仅提供与本公开相关的背景信息，可能不构成现有技术。
在即将到来的车型年中，用于高速公路柴油发动机的排气后处理系统一般将包括柴油颗粒过滤器(DPF)、氮氧化物吸附器(LNT)以及选择性催化还原(SCR)系统。这些装置中每一个所使用的基底的正常运行和/或维护需要再生氧化或还原流体(二次流体)。在大部分应用中，DPF要求注射例如柴油等碳氢化合物(HC)，用以对过滤器中捕集的煤烟进行定期再生或氧化。SCR系统依靠催化剂上游的还原剂(通常是尿素)注射来进行氮排放物的氧化物的还原。LNT要求使用富含碳氢化合物或一氧化碳的排气进行定期再生，这通常通过注射过量的柴油到排气流中来提供。目前，用于注射这些碳氢燃料和尿素的普遍的做法是将它们在后处理装置上游注射排气管中。这种注射必须在装置上游足够远的位置进行，通常在上游线性距离为十倍或更多倍管道直径的位置处，以保证注射流体的充分混合、蒸发和/或水解。
当必须将SCR、LNT和/或DPF系统组装到有限空间中或者必须将将它们一起联接在公共的壳体中时，传统方法的缺点便显露出来。可用的排气管长度可能不足以对注射流体进行充分的混合、蒸发和/或水解，或者使用充分的排气管长度将导致后处理系统不能接受的总背压。由于封装的限制，在排气管路径中还可能设有用于注射、混合、蒸发和/或水解的后处理部件，这些部件可能会干扰后处理装置的正常运行。
因此可见，在本领域内需要一种设置，当没有合适长度的排气管可用时，所述设置能够促进所注射的二次流体的充分混合、蒸发和/或水解。
发明内容
本教导针对一种促进车辆的排气后处理系统需要的二次流体的注射、混合、蒸发和/或水解所需的辅助管道、替代性布管以及辅助装置。示例来说并且非限制性地，这种二次流体可以是再生流体或氧化流体或还原流体。
在本发明的一个方面中，沿后处理装置的管道平行于排气流延伸。该管道在需要二次流体的装置基底的上游从侧部进入后处理装置。在注射之前或注射过程中，向管道供给压缩空气以实现比进入排气流的位置处的压力高的压力，并实现足以进行二次流体的充分混合、蒸发和/或水解的流量。在混合管进入排气流的位置处，阀保持管道中的这种正压。根据需要将二次流体注射到该管道中并且打开阀。
在本教导的第二方面中，与发动机和后处理装置之间的主排气管平行的一条管道或多条管道从排气歧管或涡轮入口上游的涡轮增压机上的位置延伸至后处理系统中需要所注射的二次流体的部件的刚刚上游的位置。
在本教导的第三方面中，排气后处理装置设置有延伸穿过装置基底的中央通道或导管，该排气后处理装置包括用于排气/二次流体的混合腔室。
通过此处提供的说明，更多的应用领域将变得显而易见。应当理解，说明和具体的示例仅用作说明目的，并不意在限制本公开的范围。
附图说明
此处所描述的附图仅用作说明目的，并不意在以任何方式限制本公开的范围。
通过阅读结合附图的详细说明，本教导的目的和特征将变得显而易见，其中：
图1是在单个壳体中包括多个后处理装置的排气后处理系统的剖视图，所述系统包括根据本教导设置的平行路径二次流体混合系统；
图2是根据本公开的原理设置的排气后处理系统的第一替代性实施方式的侧视局部剖视图；
图3是根据本公开的原理设置的排气后处理系统的第二替代性实施方式的局部剖视图；
图4A和4B分别是图3的后处理装置的侧视剖视图和端部剖视图，示出了根据本公开的原理设置的再生流体分配构件；
图5是根据本公开的原理设置的排气后处理系统的第三实施方式的剖视图；
图6是根据本公开的原理设置的替代性排气后处理装置的立体图，所述排气后处理装置具有内部混合腔室并移除了外罩。
具体实施方式
下文的描述在本质上仅仅是示例性的，并不意在限制本公开、应用或使用。
参照图1，排气后处理系统100包括内含多个元件的多用途排气后处理装置。向该装置的输入排气用箭头130示出，而来自该装置的输出排气用箭头132示出。该多用途后处理装置包括：第一柴油氧化催化剂或氮氧化物吸附器基底102a、选择性催化还原基底104、第二柴油氧化催化剂或氮氧化物吸附器基底102b、柴油颗粒过滤器基底106以及第三柴油氧化催化剂或氮氧化物吸附器基底102c。这些基底中的每个均通过基底之间的间隙隔开，所述间隙用于容纳将在下文讨论的二次流体分配构件。
尿素混合管106基本平行于排气流与排气后处理装置并排地延伸，并且在输入端108处接收尿素和压缩空气的组合，用于在导管106的腔室116中将其混合。阀120a将压缩空气/尿素混合物引入第一再生流体分配构件122a中，所述第一再生流体分配构件122a位于基底102a和104之间并且具有多个径向定向的穿孔或孔口123，穿孔或孔口123用于将来自导管106的二次流体引导至基底104的输入面。
碳氢化合物混合管110同样基本平行于排气流延伸并且在输入端112处接收碳氢化合物(例如柴油)和压缩空气的混合物，用于在导管110的腔室118中将其混合。可选地，电热塞或者其它的辅助加热部件114可以延伸至混合腔室118中。阀120b用于对流到分配构件122b中的排气和二次流体的混合物进行计量。导管106和110在需要二次流体的特定基底的上游从侧部进入后处理装置。在注射之前或注射过程中，以足以使二次流体正常混合、蒸发和/或水解的流量向这些管道另外供给压缩空气，以实现比流体/排气混合物进入穿过所述装置的废气流的位置处的压力高的压力。在二次流体进入排气流的位置，阀保持管中的这种正压。根据需要注射二次流体并且打开阀。
这些平行管道将空气和所注射的二次流体的混合物在所述基底的刚刚上游处排到排气后处理装置的基底间的腔室中，并排至一系列孔口，所述一系列孔口调整为提供所需的穿过被处理的基底的面的流动模式。
其它的辅助装置也可以结合到这种平行管道系统中，包括促进二次流体的蒸发的加热装置、帮助LNT和/或DPF的再生的燃烧器、和/或产生层流或紊流或者促进排气和二次流体的混合的装置。可替代地，例如106和110等导管可以实现来自后处理装置的热传递从而促进空气/二次流体混合物的加热的方式物理地附连至后处理装置的壳体罩。
在图2的实施方式中，排气后处理系统200利用辅助管道来建立将二次流体注射其中的平行的排气流。柴油发动机202具有排空到涡轮增压器206中的排气歧管204。然后通过排气管208将排气输送至排气后处理装置220的输入端222。导管210基本平行于通过导管208的排气流，用于同样将排气直接从排气歧管204，或者可选地从涡轮增压器206输送至后处理装置220的二次输入端224。注射器212将所需的二次流体注射流经导管210的排气流中，用于在输入端224处引入到装置220中。然后，该混合物流经后处理装置220的基底226并在其输出端228排出，从而被排气尾管或进一步的排气管230接收。因此，可以看到导管210从排气歧管204上的位置或者从涡轮入口上游的涡轮增压器206延伸至后处理系统中刚刚位于需要所注射的二次流体的基底部件上游的位置。由于导管210起始于压力远高于基底226的刚刚上游处的压力的位置，因此能够保证排气流通过导管210、经过注射器212并且通过导管210的混合长度。
在如图3所示的另一个可能的配置中，一条管道或多条管道在平行于通过后处理基底的气流的路径上输送排气、绕过基底并且允许足以进行二次流体的注射以及正常的混合、蒸发和/或水解的直径长度比。排气后处理系统300包括位于排气管304和排气尾管332之间的后处理装置306。排气流通过箭头302示出。
排气在入口308处进入装置306到达输入腔室310。排气从腔室310流过基底326，并且流过基本平行的导管312并经过注射器316，注射器316用于将二次流体注射排气流，如箭头322所示。该混合物然后流入装置306的腔室311中，并在此处流过基底328并且回流通过第二平行管314、经过第二注射器318。如箭头324所示，混合物流回到腔室310，用于基底326的处理。由于这种配置可以不必将气体从压力较高的区域输送至压力较低的区域，因此可以将辅助泵送装置320制成系统300的一部分，从而促进二次流体的正常流动以及充分混合、蒸发和/或水解。
参照图4A和4B，图2和图3的实施方式都将排气和所注射的二次流体的混合物排入到位于经受处理的后处理基底部件的刚刚上游的腔室中，并穿过与腔室的外表相邻的圆形环或螺旋环402中的一系列孔口404。在仅仅需要周期性注射的情况下(例如LNT或DPF再生)，可在系统中设置一个或多个阀，用于启动和暂停通过平行管道的排气流。
图5示出了根据这些教导的原理设置的排气后处理系统的第三实施方式。排气后处理系统500包括具有注射器504的输入排气管502，注射器504用于将二次流体注射到进入后处理装置510的输入端518的排气流中。在该实施方式中，通过形成用于容纳延伸穿过基底512的混合导管508的通道将混合腔室包含在后处理装置510内。在图5所示的特定装置中，装置510的排气出口520与排气入口位于同一端。回转腔室516接收排气和二次流体的混合物并且使其反向流过基底孔口本身到达输出腔室514，从而自输出端520排出。
图6示出图5所示的后处理装置510的替代。在图6的设置中，从位于后处理装置基底的前表面处的腔室延伸的两条管道穿过后处理装置基底延伸至其后表面。这些管道中的一个输送排气穿过催化剂基底至其后表面，气流在所述后表面处反向并且穿过基底本身流回。第二管道在气流从基底的前表面出现后接收气流，并且再次转换方向使其通过基底的内部通道流回到第二下游基底前面的腔室。一个示例可以是DPF跟在SCR系统之后，其中必须在各个后处理装置之前注射并且混合二次流体。通过在平行于穿过后处理部件的气流的路径上输送排气、绕过所述气流并且允许足以进行注射以及正常的混合、蒸发和/或水解的直径长度比，图6的设置使得能够在通过其它方式无法实现的情况下正常地引入二次流体。同样，当仅仅需要周期性注射二次流体时，可在系统中设置一个或多个阀用于对排气流关闭注射器。
图6的装置600接收来自排气管602的排气流，所述气流通过箭头604a指示。排气输入导管606形成用于排气和的二次流体的第一混合腔室，二次流体通过注射器610注射到其一侧上的第一隔板608限定的输入体积中。排气/二次流体混合物然后如箭头604b所示地前进，沿导管606向下流至位于基底616的下游面处的由第二隔板618限定的回转腔室。排气/二次流体混合物然后通过箭头604c前进，穿过基底616本身的结构流回至限定在基底616和隔板608之间的第二注射区域，第二注射器612在所述第二注射区域进一步注射二次流体到排气流中，用于穿过基底616输送到第二内部导管614中，以在下游供如图6所示位于隔板618的左侧的另一个后处理装置使用。该排气/二次流体的输出流通过箭头604d示出。
根据此处本公开的原理设置的系统能够在后处理系统的封套小并且后处理装置的组合必须在公共的外壳中联接在一起的情况下提供了封装上的优点。根据本公开的系统还在主排气管的长度不足以支持二次流体的正常混合、蒸发和/或水解的情况下提供方便的配置。此外，在混合导管能够制成与主排气管相比具有更佳的长度直径比和/或更直的路径的情况下，这种系统提供混合物更有效的混合和均匀性。而且，提供了可回转的输入路径，用于使富含二次流体的混合物进入经受处理的后处理部件上游的区域中。最后，本公开的系统能够使用直径较大的催化剂基底(为了更好的流动均匀性和较低的系统背压)，这在很多情况下将要求基底紧靠在一起设置，因此消除了基底之间的管道以及端部锥形件等的长度，这还适于使用中排气流与二次流体的注射以及正常混合。
已经参照仅为示例目的阐述的实施方式对本发明进行了描述。本发明应当参照适当解释的权利要求来理解。

Claims (12)

1.一种用于将二次流体应用于车辆的后处理装置的系统，所述系统包括：
混合腔室，该混合腔室联接为用于在混合腔室入口处接收排气流的一部分；
与所述混合腔室流体连通的二次流体源；以及
流体分配构件，该流体分配构件位于所述排气后处理装置上游的主排气流导管中，并且联接于所述混合腔室的输出端，所述流体分配构件操作为朝所述后处理装置的上游面带来流体流的预选模式。
2.如权利要求1所述的系统，其中，所述混合腔室与所述主排气流导管分开。
3.如权利要求2所述的系统，其中，所述混合腔室包括基本平行于所述主排气流导管延伸的导管。
4.如权利要求1所述的系统，还包括二次流体注射器，所述二次流体注射器用于在压力下将从所述二次流体源接收的二次流体注射到所述混合腔室中。
5.如权利要求1所述的系统，还包括位于所述混合腔室的输出端中的阀，所述阀操作为选择性地允许和禁止所述混合腔室与所述流体分配构件之间的流体连通。
6.如权利要求1所述的系统，其中，所述排气后处理装置包括颗粒过滤器，而所述二次流体包括过滤器再生流体。
7.如权利要求1所述的系统，其中，所述排气后处理装置包括选择性催化还原催化转换器，而所述二次流体包括还原剂。
8.如权利要求1所述的系统，其中，所述排气后处理装置包括一氧化二氮吸附器，而所述二次流体包括转换器基底再生流体。
9.如权利要求1所述的系统，其中，所述混合腔室位于所述后处理装置的壳体内。
10.如权利要求3所述的系统，其中，所述混合腔室输入端联接于所述车辆的排气歧管。
11.如权利要求1所述的系统，其中，所述流体分配构件包括穿孔的导管，所述穿孔的导管具有相对于所述后处理装置的上游面定位的一系列孔口，从而带来预选的模式。
12.如权利要求11所述的系统，其中，所述穿孔的导管是环状的。
CNA2007800460272A 2006-12-14 2007-10-30 用于排气后处理装置的流体注射和混合系统 Pending CN101563529A (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US87492106P 2006-12-14 2006-12-14
US60/874,921 2006-12-14
US11/862,293 2007-09-27
US11/862,293 US20080141662A1 (en) 2006-12-14 2007-09-27 Fluid injecting and mixing systems for exhaust after-treatment devices

Publications (1)

Publication Number Publication Date
CN101563529A true CN101563529A (zh) 2009-10-21

Family

ID=39525486

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2007800460272A Pending CN101563529A (zh) 2006-12-14 2007-10-30 用于排气后处理装置的流体注射和混合系统

Country Status (9)

Country Link
US (1) US20080141662A1 (zh)
JP (1) JP2010513773A (zh)
KR (1) KR20090094457A (zh)
CN (1) CN101563529A (zh)
BR (1) BRPI0720024A2 (zh)
CA (1) CA2667062A1 (zh)
DE (1) DE112007002861T5 (zh)
MX (1) MX2009006290A (zh)
WO (1) WO2008076175A2 (zh)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8499548B2 (en) 2008-12-17 2013-08-06 Donaldson Company, Inc. Flow device for an exhaust system
US8505279B2 (en) * 2009-03-26 2013-08-13 GM Global Technology Operations LLC Exhaust gas treatment system including a four-way catalyst and urea SCR catalyst and method of using the same
US8555617B2 (en) * 2009-03-26 2013-10-15 GM Global Technology Operations LLC Exhaust gas treatment system including a four-way catalyst and urea SCR catalyst and method of using the same
US20110047970A1 (en) * 2009-09-01 2011-03-03 Cummins Intellectual Properties, Inc. HIGH EFFICIENCY NOx REDUCTION SYSTEM AND METHOD
US8277548B2 (en) * 2009-09-25 2012-10-02 Tenneco Automotive Operating Company Inc. Combined exhaust gas aftertreatment/air cleaner dust and ejector unit
EP2524123B1 (en) 2010-01-12 2016-11-23 Donaldson Company, Inc. Flow device for exhaust treatment system
US9670811B2 (en) 2010-06-22 2017-06-06 Donaldson Company, Inc. Dosing and mixing arrangement for use in exhaust aftertreatment
US20120079818A1 (en) 2010-09-30 2012-04-05 Svihla Gary R Filtration arrangement for an exhaust aftertreatment system for a locomotive two-stroke diesel engine
EP2503122B1 (en) * 2011-03-22 2014-10-08 Delphi International Operations Luxembourg S.à r.l. Reagent dosing pump assembly
DE102011015512A1 (de) * 2011-03-30 2012-10-04 Dif Die Ideenfabrik Gmbh Kompakte Abgasbehandlungseinheit mit Mischbereich und Verfahren zur Vermischung eines Abgases
WO2013117230A1 (en) * 2012-02-09 2013-08-15 Toyota Motor Europe Nv/Sa Reduction agent injector
JP2013217351A (ja) * 2012-04-12 2013-10-24 Futaba Industrial Co Ltd 排ガス浄化装置
US8938954B2 (en) 2012-04-19 2015-01-27 Donaldson Company, Inc. Integrated exhaust treatment device having compact configuration
US20130291518A1 (en) * 2012-05-07 2013-11-07 Ajay Patel Exhaust system having a pre-heater
FI20126122L (fi) * 2012-10-29 2014-04-30 Waertsilae Finland Oy Menetelmä pelkistimen ja pakokaasun sekoittamiseksi ja pakojärjestelmä
WO2014127264A1 (en) 2013-02-15 2014-08-21 Donaldson Company, Inc. Dosing and mixing arrangement for use in exhaust aftertreatment
CN205025535U (zh) * 2013-04-25 2016-02-10 天纳克（苏州）排放系统有限公司 混合组件、入口管组件及其排气后处理部件
JP6352114B2 (ja) * 2014-08-29 2018-07-04 日野自動車株式会社 排気浄化システム
KR102154366B1 (ko) * 2015-02-24 2020-09-09 현대중공업 주식회사 부식 방지를 위한 벤팅에어 공급관을 가지는 scr 시스템
KR102260199B1 (ko) * 2015-07-16 2021-06-02 현대중공업 주식회사 고압 scr 시스템
CN105134349B (zh) * 2015-08-21 2017-08-29 天纳克（苏州）排放系统有限公司 排气处理装置
DE102016205299A1 (de) * 2016-03-31 2017-10-05 Man Diesel & Turbo Se Brennkraftmaschine mit Abgasnachbehandlungssystem
CN107131030B (zh) * 2017-06-29 2019-08-30 嘉兴学院 一种环保型双层汽车排气管
EP3492718B1 (en) 2017-11-30 2020-06-10 Katcon Global S.A. Exhaust line for a vehicle
KR102153089B1 (ko) * 2018-03-29 2020-09-07 주식회사 에스엔 반응로 내 반응제 공급 및 분사용 다관 입자 인젝터 및 이를 이용한 반응제 공급 및 분사 방법

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4969328A (en) * 1986-10-21 1990-11-13 Kammel Refaat A Diesel engine exhaust oxidizer
DE19546482A1 (de) * 1995-12-13 1997-06-26 Basf Ag Verfahren zum Betreiben einer Reinigungsanlage, eine Reinigungsanlage und eine Verwendung derselben
US6125629A (en) * 1998-11-13 2000-10-03 Engelhard Corporation Staged reductant injection for improved NOx reduction
GB9915939D0 (en) * 1999-07-08 1999-09-08 Johnson Matthey Plc Improvements in pollution control
US6314722B1 (en) * 1999-10-06 2001-11-13 Matros Technologies, Inc. Method and apparatus for emission control
DE10042542A1 (de) * 2000-08-30 2002-03-14 Eberspaecher J Gmbh & Co Abgasreinigungssystem für Kraftfahrzeuge, insbesondere Diesel-Nutzfahrzeuge
JP3685052B2 (ja) * 2000-11-30 2005-08-17 日産自動車株式会社 内燃機関の排気浄化装置
JP3624892B2 (ja) * 2001-03-29 2005-03-02 トヨタ自動車株式会社 内燃機関の排気浄化装置
JP3981915B2 (ja) * 2001-04-03 2007-09-26 日産自動車株式会社 排気ガス浄化システム
GB0113226D0 (en) * 2001-06-01 2001-07-25 Nelson Burgess Ltd Catalytic converter
US6679052B2 (en) * 2001-07-31 2004-01-20 Toyota Jidosha Kaisha Emission control apparatus
US7021048B2 (en) * 2002-01-25 2006-04-04 Arvin Technologies, Inc. Combination emission abatement assembly and method of operating the same
GB0220645D0 (en) * 2002-09-05 2002-10-16 Johnson Matthey Plc Exhaust system for a lean burn ic engine
JP4262522B2 (ja) * 2003-05-28 2009-05-13 株式会社日立ハイテクノロジーズ エンジン用排気ガス処理装置および排気ガス処理方法
US6883311B2 (en) * 2003-07-02 2005-04-26 Detroit Diesel Corporation Compact dual leg NOx absorber catalyst device and system and method of using the same
JP2005214159A (ja) * 2004-02-02 2005-08-11 Hino Motors Ltd 排気浄化装置
US20050274104A1 (en) * 2004-06-15 2005-12-15 Leslie Bromberg Optimum regeneration of diesel particulate filters and NOx traps using fuel reformers
US7770386B2 (en) * 2004-12-28 2010-08-10 Caterpillar Inc Filter desulfation system and method
US7581387B2 (en) * 2005-02-28 2009-09-01 Caterpillar Inc. Exhaust gas mixing system
US7571602B2 (en) * 2005-05-19 2009-08-11 Gm Global Technology Operations, Inc. Exhaust aftertreatment system and method of use for lean burn internal combustion engines
US7610751B2 (en) * 2006-07-21 2009-11-03 Eaton Corporation Fuel injection before turbocharger
US7497077B2 (en) * 2006-07-26 2009-03-03 Southwest Research Institute System and method for dispensing an aqueous urea solution into an exhaust gas stream

Also Published As

Publication number Publication date
US20080141662A1 (en) 2008-06-19
WO2008076175A2 (en) 2008-06-26
DE112007002861T5 (de) 2009-10-22
BRPI0720024A2 (pt) 2013-12-17
JP2010513773A (ja) 2010-04-30
WO2008076175A3 (en) 2008-08-21
MX2009006290A (es) 2009-10-12
CA2667062A1 (en) 2008-06-26
KR20090094457A (ko) 2009-09-07

Similar Documents

Publication Publication Date Title
CN101563529A (zh) 用于排气后处理装置的流体注射和混合系统
US7712305B2 (en) Exhaust aftertreatment system with spiral mixer
US8043394B2 (en) Particulate matter filter assembly with a flow device
US11141696B2 (en) Single module integrated aftertreatment module
US8151556B2 (en) Internal combustion engine exhaust after-treatment system and method
JP5066435B2 (ja) ディーゼルエンジン用の排ガス浄化装置
CN103089380A (zh) 电加热的NOx吸附剂催化剂
MY127016A (en) Device for reducing a level of nitrogen oxides in an exhaust gas of an internal combustion engine.
US9133744B2 (en) Vehicle exhaust gas treatment apparatus
US20110225969A1 (en) Compressor bypass to exhaust for particulate trap regeneration
RU2009132607A (ru) Способ регенерации сажевых фильтров в системе выпуска отработавших газов работающего на обедненных смесях двигателя внутреннего сгорания и предназначенная для этого система выпуска отработавших газов
CN215115382U (zh) 排气系统
KR20110049152A (ko) 배기 시스템
EP2813678A1 (en) An exhaust gas sampling device
KR101795402B1 (ko) 배기 시스템
US9140155B2 (en) Modular exhaust system
JP3545712B2 (ja) 排気浄化装置
JP5166848B2 (ja) 排気浄化装置
CN114320553A (zh) 用于排气气体传感器的圆形采样装置
JP2010163988A (ja) 内燃機関の排気構造
JP5737618B2 (ja) 内燃機関の排ガス浄化装置
JP2012092746A (ja) 排気浄化装置
JP2018115586A (ja) 排気ガス浄化装置
US20200003103A1 (en) Exhaust aftertreatment system for an engine
CN111183275B (zh) 内燃机的排气净化装置

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Open date: 20091021