CN1107157C - 尤其用于柴油机或稀混合气发动机的催化转换器 - Google Patents

尤其用于柴油机或稀混合气发动机的催化转换器 Download PDF

Info

Publication number
CN1107157C
CN1107157C CN99805737A CN99805737A CN1107157C CN 1107157 C CN1107157 C CN 1107157C CN 99805737 A CN99805737 A CN 99805737A CN 99805737 A CN99805737 A CN 99805737A CN 1107157 C CN1107157 C CN 1107157C
Authority
CN
China
Prior art keywords
district
zone
described catalysts
coating
thickness
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
Application number
CN99805737A
Other languages
English (en)
Other versions
CN1299438A (zh
Inventor
罗尔夫·布吕克
约尔格·罗曼·柯涅茨尼
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.)
Vitesco Technologies Lohmar Verwaltungs GmbH
Original Assignee
Emitec Gesellschaft fuer Emissionstechnologie mbH
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 Emitec Gesellschaft fuer Emissionstechnologie mbH filed Critical Emitec Gesellschaft fuer Emissionstechnologie mbH
Publication of CN1299438A publication Critical patent/CN1299438A/zh
Application granted granted Critical
Publication of CN1107157C publication Critical patent/CN1107157C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • 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
    • F01N13/0093—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 of the same type
    • 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
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • 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
    • F01N2240/10—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 heat accumulator
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/08—Exhaust treating devices having provisions not otherwise provided for for preventing heat loss or temperature drop, using other means than layers of heat-insulating material
    • 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

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

Abstract

本发明涉及一种净化内燃机尤其柴油机或稀混合气发动机废气的催化转换器，包括至少一个有催化活性物质涂层的蜂窝体(6)，它有通过壁(4、5)互相分开可流过废气的通道(3)，其中，转换器沿流动方向(S)前后有第一区(1)和第二区(2)，其中第一区(1)蜂窝体(6)每单位体积的热容量比第二区(2)的小，其特征在于，第二区(2)的热容量至少有每升和每开尔文800焦耳[J/LK]，优选地至少有900。优选地，金属薄板层(4、5)在第一区(1)内平均无涂层的厚度小于0.06mm，优选地小于0.04mm，以及在第二区内平均无涂层的厚度大于0.06mm，优选地大于0.08mm，尤其有0.11mm厚。以此方式。第一区(1)当排气温度高时可迅速达到工作温度，而在此期间第二区(2)可以蓄热用于排气温度低的工作状态。

Description

尤其用于柴油机或 稀混合气发动机的催化转换器
本发明涉及一种按权利要求1前序部分所述的催化转换器。鉴于在许多国家日益严格的环境法规，用于净化废气的催化转换器必须更准确地适应汽车的内燃机及其运行方式。
在汽油机的废气净化中，由先有技术已知，为了降低在冷起动阶段的有害物排放采用一种催化转化器，它有具有尽可能小的每单位体积的热容量的第一区，因此这一区迅速加热、起动催化反应以及通过由此产生的热能加热催化转换器处于更下游的部分。在WO 92/02716中介绍了这种催化转换器的一个例子。
US 5549873和EP 0705962 A1也介绍了在前部区内具有较小热容量的蜂窝体。所有三个文件共同之点在于，在第一区内的表面积比第二区的小，因此基本上达到减小热容量。
除了所介绍的具有较小热容量的第一区的整体式蜂窝体外，在许多排气装置中还有一些具有两个蜂窝体的方案，其中第一个蜂窝体每单位横截面积有较少的通道数并因而有较小的热容量。
最近几年总的发展趋势是，在所有的蜂窝中壁越来越薄以及导致总体上尽可能小的热容量。之所以这样做的原因，除了减轻重量外，主要是希望在排气系统内的压力损失尽可能小再加上希望有尽可能大的每单位体积的面积。
这些基本上在汽油机中获得并适用的知识涉及传统的发动机设计思想，其中，废气和燃料的混合物尽可能准确地按化学计算法调整。
然而这些设计思想不能毫无问题地转用于柴油机或所谓的稀混合气发动机，亦即以大的空气过量工作的发动机，尤其采用汽油直接喷射的发动机。由于在废气内大的空气过量，在工作时那里存在的温度比按化学计算法工作时的低得多。当然。尽管希望在内燃机冷起动后在催化转换器内尽可能迅速地达到对催化转换必要的工作温度，但是在晚些时候的运行中，尤其在怠速阶段中产生如此低的排气温度，以致使催化转换器在有的情况下冷却到为转换所需的工作温度之下，因此在随后的负载阶段起先向环境排出有害物质。
因此本发明的目的是创造一种用于净化废气的催化转换器，它尤其适用于柴油机和稀混合气发动机，在发动机冷起动后迅速达到其工作温度，但是在随后的排气温度较低的阶段中不会很快重新丧失此工作温度。
按权利要求1的催化转换器用于达到此目的。在从属权利要求中给出有利的进一步发展。
本发明决定性的步骤在于，在催化转换器内，在常见的以及在本例中也期望的热容量小的区的下游，提供一个每单位蜂窝体体积热容量特别高的第二区。与发展趋势相反，在这里因为要显著改善废气净化质量不得不忍受较大的重量和略高的压力损失。
按本发明，用于净化废气的催化转换器至少有一个具有催化活性物质涂层的蜂窝体，它有借助于壁彼此分开可流过废气的通道，其中，转换器沿流动方向前后有第一区和第二区，其中第一区蜂窝体每单位体积的热容量比第二区的小。在这里，第二区有特别大的热容量为至少每升和每开尔文有800焦耳[J/LK]，优选地至少有900。在第二区内这种大热容量的作用在于蓄热，因此在排气温度低时所蓄的热可以在一定时间内维持催化反应。
在发动机冷起动后，第一区如按先有技术已知的那样迅速加热，并开始有害的废气成分尤其碳氢化合物和一氧化碳的催化转换。这种反应是放热的并支持迅速加热现在开始蓄热的第二区。为了在此冷起动阶段中进行转化反应，催化转换器第一区的表面积基本上足够了，所以第二区温度缓慢上升对于有害物质排放没有造成不利的影响。因此，第二区在后续的排气温度低的运行阶段借助于所蓄的热可以继续维持催化反应，在此期间第一区由于其热容量小而迅速冷却到低于必要的转化温度。在再往后的排气温度较高的阶段放热反应迅速地重新转移到第一区内，因此第二区重新加热并能蓄入新的热量。这一过程总体上导致即使在发动机运行方式变换的情况下仍能均匀和有效地净化废气，上述运行方式的变换例如尤其可能在居民区行驶时和在相应的试车循环中发生。
原则上有多种可能性制造具有热容器特别大的第二区的催化转换器。热容量可通过增加载体结构的壁厚和/或通过增加涂层的厚度获得。当然，除此之外也可以与第一区相比增加每单位横截面积的通道数量。
在一种优选的实施形式中，催化转换器由两个单个的蜂窝体组成，它们可并列靠近或在空间上略有分开地布置，其中第二蜂窝体的壁比第一蜂窝体的厚。在由金属薄板层卷绕、叠层或缠绕而成的蜂窝体的情况下，按本发明第一区平均的无涂层壁厚小于0.06mm，优选地小于0.04mm，而第二区平均的无涂层壁厚大于0.06mm，优选地大于0.08mm，尤其有0.11mm厚。因为出自于加工技术和/或力学方面的原因，有可能会要求各个薄板层，尤其是光滑的和波纹状的薄板层设计为不同的厚度，所以在本例的情况下提供的数据是平均的金属薄板层厚度。但特别优选的是，在一个区内所有的薄板层采用相同的厚度。由于通常使用的不锈钢有大的热容量，迄今对于金属蜂窝体几乎不考虑的大于0.08mm的薄板厚度允许储存大量的热，这一热量可以使作为涂层存在于薄板层上的陶瓷基面修补涂层在一段时间内保持在工作温度，即使在排气温度已剧烈下降的情况下。
当然，作为替换形式或附加地还可以在一个催化转换器的第一和第二区内涂层厚度是不一样的，所以在第一区内得出壁加上涂层的总厚度小于0.08mm，而在第二区内总厚度大于0.1mm，优选地大于0.12mm。这样做尤其对于用厚度全都相同的载体材料制的整体式蜂窝体而言提供了制成热容量不同的两个区的可能性。
为了在冷起动阶段尽管第二区缓慢加热但仍有足够的表面积用于催化转换，第一区的轴向长度应为10至60mm，优选地为20至50mm。但在总体上第二区的轴向长度应至少是第一区轴向长度的两倍。对于两个区数量至少为360cpsi(cells per squareinch)已证明是恰当的。
在下面借助示意表示本发明实施例的附图进一步说明本发明的其他详情和优点。
附图表示了一个具有蜂窝体6的催化转换器。此蜂窝体有一个轴向长度a的沿轴向第一区1和轴向长度b的沿轴向第二区2。蜂窝体6沿流动方向S被内燃机尤其柴油机或稀混合气发动机的废气流过。应当指出，蜂窝体6可以是整体式蜂窝体，其中设计有热容量不同的区1、2，但它也可以是由两个分开的用于两个区1、2的蜂窝体组成，它们然后装在一共同的外套管7内。按本实施例的蜂窝体由彼此反向缠绕的光滑金属薄板层4和波纹的金属薄板层5组成，它们构成可流过废气的通道3。在优选的实施例中，在第一区1内所有薄板的厚度约为0.03mm，在第二区2内则不同约为0.11mm。由此，使第二区具有涂层的热容量超过900J/LK。
本发明允许在柴油机或稀混合气发动机变换的工作状态下有效地净化废气，与此同时按本发明的方案简单、成本低以及在重量和压力损失方面只有轻微的缺点。

Claims (12)

1.净化内燃机尤其柴油机或稀混合气发动机废气的催化转换器，包括至少一个有催化活性活质涂层的蜂窝体(6)，它有通过壁(4、5)互相分开可流过废气的通道(3)，其中，转换器沿流动方向(S)前后有第一区(1)和第二区(2)，其中第一区(1)蜂窝体(6)每单位体积的热容量比第二区(2)的小，其特征为：第二区(2)的热容量至少每升和每开尔文有800焦耳[J/LK]。
2.按照权利要求1所述的催化转换器，其特征为：蜂窝体(6)由至少局部具有某种结构的金属薄板层(4、5)卷绕、叠层或缠绕而成，金属薄板层构成通道(3)的壁，并且金属薄板层(4、5)在第一区(1)内平均无涂层的厚度小于0.06mm，以及在第二区内平均无涂层的厚度大于0.06mm。
3.按照权利要求1或2所述的催化转换器，其特征为：带涂层的壁(3)厚度在第一区(1)内小于0.08mm，以及在第二区(2)内大于0.1mm。
4.按照权利要求1或2所述的催化转换器，其特征为：第一区(1)和第二区(2)由两个分开的蜂窝体构成。
5.按照权利要求1或2所述的催化转换器，其特征为：第一区(1)和第二区(2)设计在一个整体式的蜂窝体(6)内。
6.按照权利要求3所述的催化转换器，其特征为：第一区(1)和第二区(2)设计为有不同厚度的涂层。
7.按照权利要求1或2所述的催化转换器，其特征为：第二区(2)的轴向长度(b)至少是第一区(1)轴向长度(a)的两倍。
8.按照权利要求1或2所述的催化转换器，其特征为：第一区(1)的轴向长度(a)为10至60mm。
9.按照权利要求1或2所述的催化转换器，其特征为：它安装在尤其汽车柴油机的排气装置内。
10.按照权利要求1或2所述的催化转换器，其特征为：它安装在尤其汽车的采用汽油直接喷射的稀混合气发动机的排气装置内。
11.按照权利要求1或2所述的催化转换器，其特征为：在第一区(1)和第二区(2)内每单位横截面积的通道数大体相同。
12.按照权利要求1或2所述的催化转换器，其特征为：在第一区(1)和第二区(2)内每单位体积的表面积基本相同。
CN99805737A 1998-05-12 1999-05-03 尤其用于柴油机或稀混合气发动机的催化转换器 Expired - Fee Related CN1107157C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19820971.1 1998-05-12
DE19820971A DE19820971A1 (de) 1998-05-12 1998-05-12 Katalytischer Konverter, insbesondere für einen Dieselmotor oder einen Magermotor

Publications (2)

Publication Number Publication Date
CN1299438A CN1299438A (zh) 2001-06-13
CN1107157C true CN1107157C (zh) 2003-04-30

Family

ID=7867342

Family Applications (1)

Application Number Title Priority Date Filing Date
CN99805737A Expired - Fee Related CN1107157C (zh) 1998-05-12 1999-05-03 尤其用于柴油机或稀混合气发动机的催化转换器

Country Status (14)

Country Link
US (1) US6827909B1 (zh)
EP (1) EP1078150B1 (zh)
JP (1) JP2002514707A (zh)
KR (1) KR100576960B1 (zh)
CN (1) CN1107157C (zh)
AU (1) AU4036299A (zh)
BR (1) BR9910324A (zh)
DE (2) DE19820971A1 (zh)
ES (1) ES2175979T3 (zh)
ID (1) ID27173A (zh)
PL (1) PL197596B1 (zh)
RU (1) RU2213232C2 (zh)
TW (1) TW402659B (zh)
WO (1) WO1999058827A1 (zh)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000568C2 (de) * 2000-01-10 2003-08-14 Emitec Emissionstechnologie Thermisch isolierte Abgasreinigungsanlage
GB0003405D0 (en) * 2000-02-15 2000-04-05 Johnson Matthey Plc Improvements in emissions control
DE10027400C1 (de) * 2000-06-02 2001-08-23 Emitec Emissionstechnologie Katalysator-Trägerkörper, insbesondere für einen Gasmotor
TW475027B (en) * 2000-06-02 2002-02-01 Emitec Emissionstechnologie Catalyst carrier body with protective zone
DE10118327A1 (de) † 2001-04-12 2002-10-17 Emitec Emissionstechnologie Abgassystem
DE10329162A1 (de) * 2003-06-27 2005-01-13 Alstom Technology Ltd Katalytischer Reaktor und zugehöriges Betriebsverfahren
DE102004052106B4 (de) * 2004-10-26 2008-01-10 J. Eberspächer GmbH & Co. KG Kombination eines Katalysators mit einem Wärmespeicher
US20060179819A1 (en) * 2005-02-14 2006-08-17 Sullivan John T System and method for reducing vehicle emissions and/or generating hydrogen
US7523607B2 (en) * 2005-02-14 2009-04-28 John Timothy Sullivan System and method for reducing vehicle emissions and/or generating hydrogen
GB0600130D0 (en) * 2006-01-06 2006-02-15 Johnson Matthey Plc Exhaust system comprising zoned oxidation catalyst
US7862640B2 (en) 2006-03-21 2011-01-04 Donaldson Company, Inc. Low temperature diesel particulate matter reduction system
DE102006026161A1 (de) * 2006-05-23 2007-11-29 Robert Bosch Gmbh Filtereinrichtung, insbesondere für ein Abgassystem einer Brennkraftmaschine
GB0618482D0 (en) * 2006-09-20 2006-11-01 Johnson Matthey Plc Washcoated particulate filter substrate
FR2906483B1 (fr) * 2006-09-29 2009-06-05 Peugeot Citroen Automobiles Sa Support monolithique pour element catalyseur d'oxydation, element catalyseur d'oxydation le comportant, ligne d'echappement ainsi equipee et vehicule la comportant.
US20090199547A1 (en) * 2008-02-08 2009-08-13 Gm Global Technology Operations, Inc. Method and apparatus for exhaust aftertreatment in a spark-ignition direct-injection internal combustion engine
DE102009034655A1 (de) 2009-07-24 2011-01-27 J. Eberspächer GmbH & Co. KG Latentwärmespeicher
JP2011052919A (ja) * 2009-09-03 2011-03-17 Ngk Insulators Ltd 蓄熱体
GB0922194D0 (en) * 2009-12-21 2010-02-03 Johnson Matthey Plc Improvements in emission control
DE102010055147A1 (de) * 2010-12-18 2012-06-21 Volkswagen Ag Vier-Wege-Katalysator, seine Verwendung sowie Fahrzeug mit einem solchen
US10280822B2 (en) * 2017-07-11 2019-05-07 Toyota Jidosha Kabushiki Kaisha Exhaust gas purifying apparatus
RU176931U1 (ru) * 2017-08-22 2018-02-02 Виктор Владимирович Качура Каталитический преобразователь
DE102018001800A1 (de) 2018-03-07 2019-09-12 Smart Material Printing B.V. Verfahren und Vorrichtung zur Reinigung von Gasen von Ammoniak oder Ammoniak und Noxen
GB2581776B (en) * 2019-02-19 2022-08-17 Jaguar Land Rover Ltd Catalytic converter core having first and second regions with different thermal inertia

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622530A1 (en) * 1993-03-26 1994-11-02 Ngk Insulators, Ltd. Exhaust gas purifying apparatus
EP0705962A1 (en) * 1994-10-04 1996-04-10 Nippondenso Co., Ltd. Honeycomb body and catalyst converter having catalyst carrier configured of the honeycomb

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024942A1 (de) 1990-08-06 1992-02-13 Emitec Emissionstechnologie Monolithischer metallischer wabenkoerper mit variierender kanalzahl
JPH05228375A (ja) * 1992-02-20 1993-09-07 Toyota Motor Corp 排ガス浄化触媒用担体構造
EP0596854A1 (de) * 1992-11-02 1994-05-11 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Katalysator
US5549873A (en) 1994-02-18 1996-08-27 Volkswagen Ag Exhaust gas converter arrangement
JPH094439A (ja) * 1995-06-16 1997-01-07 Honda Motor Co Ltd 内燃機関における排気浄化装置
JP3025445B2 (ja) * 1995-11-21 2000-03-27 三菱化学株式会社 触媒コンバーター及びその製造方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0622530A1 (en) * 1993-03-26 1994-11-02 Ngk Insulators, Ltd. Exhaust gas purifying apparatus
EP0705962A1 (en) * 1994-10-04 1996-04-10 Nippondenso Co., Ltd. Honeycomb body and catalyst converter having catalyst carrier configured of the honeycomb

Also Published As

Publication number Publication date
ID27173A (id) 2001-03-08
KR100576960B1 (ko) 2006-05-10
TW402659B (en) 2000-08-21
RU2213232C2 (ru) 2003-09-27
EP1078150A1 (de) 2001-02-28
DE59901066D1 (de) 2002-05-02
PL197596B1 (pl) 2008-04-30
DE19820971A1 (de) 1999-11-18
US6827909B1 (en) 2004-12-07
AU4036299A (en) 1999-11-29
JP2002514707A (ja) 2002-05-21
KR20010043500A (ko) 2001-05-25
EP1078150B1 (de) 2002-03-27
CN1299438A (zh) 2001-06-13
WO1999058827A1 (de) 1999-11-18
ES2175979T3 (es) 2002-11-16
BR9910324A (pt) 2001-01-30
PL344003A1 (en) 2001-09-10

Similar Documents

Publication Publication Date Title
CN1107157C (zh) 尤其用于柴油机或稀混合气发动机的催化转换器
US3247665A (en) Catalytic muffler construction for exhaust emission control in an internal combustion engine system
CN102203393B (zh) 催化转化器装置
DE102018107743A1 (de) Aufwärmverfahren für Abgasbehandlungssysteme
CN103362613B (zh) 一氧化碳选择性氧化催化剂
EP2042698B2 (en) Exhaust treatment device with independant catalyst supports
JPH06501877A (ja) 触媒反応装置と排出物を制御する方法
CN101050717B (zh) 排气净化装置
EP1255918B1 (en) Light-duty diesel catalysts
Nonnenmann Metal supports for exhaust gas catalysts
CN113631801B (zh) 废气排放控制装置和方法、配备有该装置的内燃机
RU2554158C2 (ru) Выхлопная система для транспортного средства, имеющего двигатель с воспламенением от сжатия с системой "пуск-останов"
EP0622530B2 (en) Exhaust gas purifying apparatus
EP1697621A1 (en) Apparatus for purifying exhaust gas
US7490595B2 (en) Exhaust gas system having an exhaust gas treatment unit and a heat exchanger in an exhaust gas recirculation line
CN104033221A (zh) 热管理废气处理设备及其制造方法
JP2001193447A (ja) 過給式内燃機関の排気ガス中のｎｏ、ｃｏ、炭化水素及び炭素粒子を酸化する方法
Brück et al. Design criteria for metallic substrates for catalytic converters
Held et al. Improved cell design for increased catalytic conversion efficiency
US10753247B2 (en) Bi-metallic oxidation catalyst materials and appurtenant devices and systems
US6770591B2 (en) Honeycomb body, in particular catalyst carrier body, for motorcycle or diesel applications
US11446637B2 (en) Bi-metallic three-way catalyst materials and appurtenant devices and systems
Takada et al. Development of a Highly Heat-Resistant Metal Supported Catalyst
EP0785017A1 (en) A catalyst system
Socha et al. Advances in durability and performance of ceramic preconverter systems

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: 20030430

Termination date: 20160503