CN106285857A - 废气混合器配置组件 - Google Patents

废气混合器配置组件 Download PDF

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CN106285857A
CN106285857A CN201610412881.7A CN201610412881A CN106285857A CN 106285857 A CN106285857 A CN 106285857A CN 201610412881 A CN201610412881 A CN 201610412881A CN 106285857 A CN106285857 A CN 106285857A
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mixer configuration
exhaust
configuration component
flow path
exhaust mixer
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CN106285857B (zh
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H·费伦特
桑伟
D·宾德尔
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Prim Co.,Ltd.
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Eberspaecher Exhaust Technology GmbH and Co KG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/14—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system
    • F02M26/15—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the exhaust system in relation to engine exhaust purifying 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
    • F01N3/18—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]
    • F01N3/2073—Selective catalytic reduction [SCR] with means for generating a reducing substance from the exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/21—Mixing gases with liquids by introducing liquids into gaseous media
    • B01F23/213—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids
    • B01F23/2132—Mixing gases with liquids by introducing liquids into gaseous media by spraying or atomising of the liquids using nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/314—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit
    • B01F25/3141—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced at the circumference of the conduit with additional mixing means other than injector mixers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/433—Mixing tubes wherein the shape of the tube influences the mixing, e.g. mixing tubes with varying cross-section or provided with inwardly extending profiles
    • B01F25/4331—Mixers with bended, curved, coiled, wounded mixing tubes or comprising elements for bending the flow
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1888—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells
    • F01N13/1894—Construction facilitating manufacture, assembly, or disassembly the housing of the assembly consisting of two or more parts, e.g. two half-shells the parts being assembled in longitudinal direction
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
    • 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
    • F01N3/18—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]
    • F01N3/208—Control of selective catalytic reduction [SCR], e.g. dosing of reducing agent
    • 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
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Dispersion Chemistry (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

本发明涉及一种废气混合器配置组件，其用于将内燃机的废气与添加物混合，该废气混合器配置组件包括具有上游的入口区域(24)和下游的出口区域(26)的废气流动通道(28)，其中，该废气流动通道(28)在入口区域(24)与出口区域(26)之间至少部分地螺旋式弯曲。

Description

废气混合器配置组件
技术领域
本发明涉及一种废气混合器配置组件，在该废气混合器配置组件中，离开例如机动车的内燃机的废气能够与添加物诸如尿素混合，以便减少有害物质排放。
背景技术
在将添加物导入废气中时已知的是：为了实现废气的涡流和由此更好地与导入废气内的添加物的充分混合，在废气流动路径中置入多个具有翼状导流面的废气混合器。
发明内容
本发明的目的是提供一种废气混合器配置组件，在该废气混合器配置组件中，在构造简单的同时实现由内燃机排出的废气与导入这些废气内的添加物的最佳混合。
根据本发明，这个目的通过用于将内燃机的废气与添加物混合的废气混合器配置组件得以实现，该废气混合器配置组件包括：具有上游的入口区域和下游的出口区域的废气流动通道，其中，该废气流动通道在入口区域与出口区域之间至少部分地螺旋式弯曲。
通过提供具有螺旋式弯曲结构的废气流动通道获得较大的混合距离，并且由于在废气流过时强制性地发生这些废气的转向而获得涡流，而并不由此产生废气流动阻力的明显提高。如果在这个出现通过废气偏转而产生涡流的区域中导入添加物，那么可以在无需将附加的废气混合器整合在流动路径内的情况下实现废气与导入这些废气内的添加物的改进的混合。
为了实现紧凑的、依然产生所期望的偏转和由此涡流的构造，提出：废气流动通道在入口区域之后的第一流动通道段中基本上在一个流动通道平面中延伸并且在所述第一流动通道段之后具有从流动通道平面中引出的第二流动通道段。在此例如可以规定：在所述第一流动通道段中进行在150°至210°范围中的、优选约180°的流动转向，或/和在所述第二流动通道段中进行从流动通道平面出来的在70°至110°的范围中的、优选约90°的偏转。
为了能够在构造简单的同时提供废气流动通道的螺旋式弯曲的结构，提出：混合器壳体包括中心壳体件、与该中心壳体件一起限定从入口区域起通向贯通区域的第一流动通道区域的第一侧向壳体件和与该中心壳体件一起限定从贯通区域起通向出口区域的第二流动通道区域的第二侧向壳体件。在此可以有益地作为板材成形件提供所有三个壳体件，这些板材成形件可以沿着相应的边缘区域例如通过点焊或通过激光焊缝或类似方式相互连接。
为了能够以简单的方式在两个流动通道区域之间建立流动连接，提出：贯通区域包括构造在中心壳体件中的至少一个通孔。特别是在此可以规定：所述至少一个通孔构造在中心壳体件的柱状的或漏斗状的成型部的区域中。
在中心壳体件与第一侧向壳体件之间提供的第一流动通道区域优选包括第一流动通道段和第二流动通道段，即废气流动通道的那个部分，在该部分中一方面进行在基本上一个流动平面中的实质的转向，并且然后进行废气从所述流动平面出来的偏转。
为了能够以简单的方式将根据本发明的废气混合器配置组件整合到废气排出系统的通常延长的结构中，提出：入口区域中的废气流动方向基本上与出口区域中的废气流动方向相符。
此外，优选废气混合器配置组件包括用于在废气流动通道的入口区域附近喷射添加物的添加物喷射配置组件。由此保障：在一个区域中进行添加物的导入，该区域位于如下的区域上游或者已经位于如下的区域中，在该区域中通过废气基于废气流动通道的螺旋式结构的偏转产生明显的涡流。
优选添加物喷射配置组件如下地设置，即，它将添加物基本上喷射到第一流动通道段中。当在此基本上沿着一个在添加物喷射的区域中与废气流动通道中的燃烧废气的主流动方向相符的方向喷射添加物时，导入废气中的添加物为了与这些废气更好地混合同样获得由废气流动通道的弯曲结构引起的转向并且在此与废气混合。
当在入口区域与出口区域之间的废气流动通道基本上具有一个螺旋(Windung)时，可以在根据本发明的废气混合器配置组件具有依然紧凑的造型的同时实现废气与导入这些废气内的添加物的特别有效的混合。
附图说明
下文将参照附图对本发明进行详细说明。附图中：
图1示出催化转化器配置组件上游或微尘滤清器上游的内燃机的废气排出系统中的废气混合器配置组件；
图2示出为了构造图1的废气混合器配置组件需相互连接的三个壳体件的视图a)，b)和c)；
图3以另外的透视图示出废气混合器配置组件的所述三个壳体件的视图a)，b)和c)；
图4示出图1的废气混合器配置组件，其中，为了流动导向的图解说明移除了在图2a)和3a)中示出的第一侧向壳体件；
图5示出与图4相应的视图，在该视图中移除了在图2c)和3c)中示出的第二侧向壳体件。
具体实施方式
在图1中，整合在车辆的内燃机的废气排出系统12内的根据本发明构造的废气混合器配置组件10设置在一般标注为15的催化转化器配置组件上游或微尘滤清器上游。废气混合器配置组件10包括混合器壳体14，该混合器壳体基本上以三个壳体件18、20、48构造而成。图2和3在不同视图中示出这三个壳体件18、20、48并在下面对其加以详细说明。
优选作为板材成形件提供的中心壳体件18与优选同样作为板材成形件提供的第一侧向壳体件20共同限定废气混合器配置组件10的从入口区域24通向出口区域26的废气流动通道28的、在图4中可以看到的、一般标注为22的第一流动通道区域。
第一流动通道区域22在提供一个近似直线延伸的通道区域的入口区域24之后包括第一流动通道段30，在该第一流动通道段中，废气流如通过图3a)中的流动箭头P1和图4中的P2图解说明的那样转向约180°。这个第一流动通道段30如图2b)图解说明的那样基本上位于一个流动通道平面E中。在此例如可以将第一流动通道段30的中央流线或者基本上几何横截面中心视为基本上位于平面E中。在此通过中心壳体件18的或者侧向壳体件20的壳层状的成型部32、34，基本上可以由中心壳体件18提供或者限定第一流体段30的或第一流动通道区域22的流动横截面的一半并且可以由第一侧向壳体件20提供或者限定另一半。
两个壳体件18、20可以在构造成用于相互贴靠的边缘区域36、38中不透废气地相互连接、例如通过焊接。
在中心壳体件18中、在限定第一流动通道段的成型部32的端部区域上构成有柱状的或漏斗状的成型部40，该成型部限定贯穿区域44的从第一流动通道区域22中引出的通孔42。这个成型部40基本上限定第一流动通道区域22的、与基本上位于废气流动平面E中的第一流动通道段30毗邻的第二流动通道段46。在这个接在第一流动通道段30后面的第二流动通道段46中将首先在第一流动通道段30中大约转向180°的废气从废气流动平面E中引出、例如在约90°的夹角下。这在图3b)中的流动箭头P3图解示出。
流过在漏斗状的成型部40中提供的第二流动通道段和通孔42的废气到达由中心壳体件18和第二侧向壳体件48限定的第二流动通道区域50中。第二流动通道区域50由此与第一流动通道区域22连接并且将废气引向出口区域26的方向。在此，穿过通孔42的废气由第二侧向壳体件48转向(参见箭头P5)，使得这些废气在出口区域26处具有一个出口流动方向SA，该出口流动方向大致与入口区域24处的入口流动方向SE相符。
第二侧向壳体件48与中心壳体件18也可以在需彼此相对定位的边缘区域52、54的区域中防止废气流出地密封地相互连接、例如通过焊接。
通过三个壳体件18、20、48提供具有一般螺旋式、螺纹式或螺线式几何形状的废气流动通道28。这个螺旋式几何形状基本上具有一个螺旋，这个螺旋例如围绕例如基本上平行于通孔42的开口中心轴线(Oeffnungsmittenachse)A的假设的螺旋轴引导，并且在这个螺旋中，废气既围绕这个假设的螺旋轴、也沿着这个螺旋轴的方向偏转。在此，废气流动通道28、例如其几何横截面中心(Querschnittsmittel)或中央流线相对这个假设的螺旋轴的距离可以是基本上恒定不变或者沿着流动方向是可以变化的。
在废气流动通道28的上游区域中、即基本上在从入口区域24向第一流动通道段30的过渡区域中，在中心壳体件18上设置有具有开口58的成型部56。添加物喷射配置组件60的喷嘴可以引导穿过这个开口58或者置入混合器壳体14中。这个添加物喷射配置组件60。这个添加物喷射配置组件60可以用于将添加物诸如尿素喷射到废气流中，以便由此通过接在下游的催化转化器配置组件中的相应的反应使得有害物质降低。
添加物喷射配置组件的主喷射方向可以与通过流动箭头P4图解示出的方向相符。可以看到：添加物喷射的这个定位在入口区域24附近的位置如下地设置，即，将添加物基本上喷射到第一流动通道段30的上游部分中而且沿着在这个区域中还大致与废气流动通道28中的废气的主流动方向相符的方向。添加物由此基本上与在废气流动通道28中引导的废气共同地沿着切向流动方向流入使废气流例如转向180°的第一流动通道段30中。在这个转向中发生废气的涡流和由此与喷射到这些废气中的添加物的强劲混合，使得包括废气和添加物的基本上均匀的混合物在出口区域26处流出。
利用废气混合器配置组件的根据本发明的构造，在结构简单的实施形式中达到对废气和喷射到这些废气中的添加物的有效的均匀的混合，而同时不发生流动阻力的明显升高。依然需要指出的是：在根据本发明的废气混合器配置组件中可以将附加的例如具有多个翼状导流面的混合器整合到特别是喷射添加物的位置的下游的废气流动通道28中。此外需要指出的是：所示出的壳体件的一个或多个壳体件当然也可以由多个单件构成。
在废气混合器配置组件的根据本发明的构造中，中心壳体件18构成在两个流动通道区域22、50之间的分隔部或间隔壁。在此通过相应的设计例如提供另外的成型部也可以将这个中心壳体件18用作混合板(Mischplatte)。此外，该中心壳体件以其表面提供蒸发面，这些蒸发面有助于以液体的形式喷射的添加物的蒸发。相应的内容也适用于由侧向壳体件提供的和与添加物接触的表面。

Claims (12)

1.废气混合器配置组件，其用于将内燃机的废气与添加物混合，该废气混合器配置组件包括具有上游的入口区域(24)和下游的出口区域(26)的废气流动通道(28)，其中，该废气流动通道(28)在入口区域(24)与出口区域(26)之间至少部分地螺旋式弯曲。
2.如权利要求1所述的废气混合器配置组件，其特征在于：废气流动通道(28)在接在入口区域(24)之后的第一流动通道段(30)中基本上在流动通道平面(E)中延伸并且在所述第一流动通道段(30)之后具有从流动通道平面(E)中引出的第二流动通道段(46)。
3.如权利要求2所述的废气混合器配置组件，其特征在于：在所述第一流动通道段(30)中进行在150°至210°范围中的、优选约180°的流动转向，或/和在所述第二流动通道段(46)中进行从流动通道平面(E)出来的在70°至110°的范围中的、优选约90°的偏转。
4.如权利要求1至3之任一项所述的废气混合器配置组件，其特征在于：混合器壳体(14)包括：中心壳体件(18)；与该中心壳体件(18)一起限定从入口区域(24)起通向贯通区域(44)的第一流动通道区域(22)的第一侧向壳体件(20)和与该中心壳体件(18)一起限定从所述贯通区域(44)起通向出口区域(26)的第二流动通道区域(50)的第二侧向壳体件(48)。
5.如权利要求4所述的废气混合器配置组件，其特征在于：所述贯通区域(44)包括构造在中心壳体件(18)中的至少一个通孔(42)。
6.如权利要求5所述的废气混合器配置组件，其特征在于：所述至少一个通孔(42)构造在中心壳体件(18)的柱状的或漏斗状的成型部(40)的区域中。
7.如权利要求2或3和权利要求4至6之任一项所述的废气混合器配置组件，其特征在于：所述第一流动通道区域(22)基本上包括所述第一流动通道段(30)和所述第二流动通道段(46)。
8.如权利要求1至7之任一项所述的废气混合器配置组件，其特征在于：入口区域(24)中的废气流动方向(SE)基本上与出口区域(26)中的废气流动方向(SA)相符。
9.如权利要求1至8之任一项所述的废气混合器配置组件，其特征在于：为了在废气流动通道(28)的入口区域(24)附近喷射添加物而设置有添加物喷射配置组件(60)。
10.如权利要求2和权利要求9所述的废气混合器配置组件，其特征在于：用于喷射添加物的添加物喷射配置组件(60)基本上设置在所述第一流动通道段(30)中。
11.如权利要求9或10所述的废气混合器配置组件，其特征在于：添加物喷射配置组件(60)的主喷射方向(P4)在添加物喷射的区域中基本上与废气流动通道(28)中的燃烧废气的主流动方向相符。
12.如权利要求1至11之任一项所述的废气混合器配置组件，其特征在于：在入口区域(24)与出口区域(26)之间的废气流动通道(28)基本上具有一个螺旋。
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