FR2927658A3 - Exhaust gas treating device for particle filter in internal combustion engine of motor vehicle, has case receiving ceramic body for treating exhaust gas, and maintaining unit maintaining ceramic body in translation inside case - Google Patents

Exhaust gas treating device for particle filter in internal combustion engine of motor vehicle, has case receiving ceramic body for treating exhaust gas, and maintaining unit maintaining ceramic body in translation inside case Download PDF

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Publication number
FR2927658A3
FR2927658A3 FR0850964A FR0850964A FR2927658A3 FR 2927658 A3 FR2927658 A3 FR 2927658A3 FR 0850964 A FR0850964 A FR 0850964A FR 0850964 A FR0850964 A FR 0850964A FR 2927658 A3 FR2927658 A3 FR 2927658A3
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FR
France
Prior art keywords
ceramic body
exhaust gas
case
housing
treating
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.)
Withdrawn
Application number
FR0850964A
Other languages
French (fr)
Inventor
Malet Etienne De
Pascal Hottebart
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Priority to FR0850964A priority Critical patent/FR2927658A3/en
Publication of FR2927658A3 publication Critical patent/FR2927658A3/en
Withdrawn legal-status Critical Current

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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
    • F01N3/02—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
    • F01N3/0211—Arrangements for mounting filtering elements in housing, e.g. with means for compensating thermal expansion or vibration
    • 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
    • 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
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
    • 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing
    • F01N2350/04—Fitting ceramic monoliths in a metallic housing with means compensating thermal expansion
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/02—Fitting monolithic blocks into the 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
    • 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
    • F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • 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

Abstract

The device has a case (3) comprising an upstream surface connected to an exhaust gas inlet nozzle (9), and a downstream surface connected to an exhaust gas outlet cone (8). The case receives a ceramic body (1) for treating an exhaust gas. An adjustable maintaining unit i.e. stop (4), maintains the ceramic body in translation inside the case. The maintaining unit is arranged on the upstream surface or the downstream surface of the case.

Description

Dispositif de traitement des gaz d'échappement à butée réglable. Exhaust gas treatment device with adjustable stop.

La présente invention concerne le traitement des gaz d'échappement d'un moteur à combustion interne, en particulier pour les véhicules automobiles équipés de filtre à particules. Plus précisément, l'invention concerne un dispositif de traitement des gaz d'échappement d'un moteur à combustion interne, le dispositif comprenant : un boîtier comprenant une face amont susceptible d'être reliée à une tubulure d'entrée des gaz d'échappement et une face aval susceptible d'être reliée à cône de sortie des gaz d'échappement, ledit boîtier étant susceptible de recevoir au moins un corps en céramique de traitement des gaz d'échappement. Un tel dispositif est connu de l'homme du métier, notamment par l'exemple qu'en donne le document de l'état de la technique antérieure EP1767752. The present invention relates to the treatment of the exhaust gases of an internal combustion engine, in particular for motor vehicles equipped with particulate filter. More specifically, the invention relates to a device for treating the exhaust gas of an internal combustion engine, the device comprising: a housing comprising an upstream face that can be connected to an inlet pipe for the exhaust gas and a downstream face capable of being connected to the exit cone of the exhaust gas, said housing being capable of receiving at least one ceramic body for treating the exhaust gas. Such a device is known to those skilled in the art, in particular by the example given in the document of the prior art EP1767752.

Il est prévu dans ce document de découper le corps en céramique et le boîtier pour que ceux-ci puisse coopérer d'une manière particulière en cas de contact entre eux, de sorte à réduire le risque d'endommagement du corps en céramique et/ou du boîtier. It is intended in this document to cut the ceramic body and the housing so that they can cooperate in a particular manner in case of contact between them, so as to reduce the risk of damage to the ceramic body and / or of the case.

Un corps en céramique possède une structure relativement friable dont il résulte qu'à la découpe, il existe des disparités de surface de découpe pouvant être de l'ordre du millimètre. Typiquement, la forme d'un corps en céramique est sensiblement cylindrique une fois celui-ci intégré dans le boîtier, et les faces transversales (de découpe) du cylindre du corps en céramique ne sont ni parfaitement lisses, ni planes. Par exemple, la longueur d'un cylindre de corps en céramique possède un intervalle de tolérance de plus ou moins 4 mm, c'est-à-dire 2 mm de chaque côté. Par conséquent, la longueur du cylindre du corps en céramique peut ne pas être homogène en tout point de ses faces transversales, et celui-ci peut donc être amené à avoir un mouvement de translation relatif au boîtier. La présente invention a pour but de remédier à ces inconvénients en proposant un dispositif visant à empêcher un mouvement de translation du corps en céramique relativement au boîtier dans lequel il est inséré. Avec cet objectif en vue, le dispositif selon l'invention, par ailleurs conforme au préambule cité ci- avant, est essentiellement caractérisé en ce qu'il comprend en outre : - des moyens de maintien réglables, configurés pour éviter tout mouvement relatif de translation longitudinale entre ledit corps en céramique et ledit boîtier. Selon une autre caractéristique, les moyens de maintien réglables peuvent être disposés sur au moins l'une des faces amont ou aval dudit boîtier. Dans un mode de réalisation, les moyens de maintien 25 peuvent être réglables par la coopération entre lesdits moyens de maintien et des moyens de réglage. De préférence, les moyens de maintien comprennent une butée. De préférence, les moyens de réglage comprennent 30 une bague de réglage. A ceramic body has a relatively friable structure which results in the cutting, there are disparities of cutting surface may be of the order of a millimeter. Typically, the shape of a ceramic body is substantially cylindrical once it is integrated in the housing, and the transverse (cutting) faces of the cylinder of the ceramic body are neither perfectly smooth nor planar. For example, the length of a ceramic body cylinder has a tolerance range of plus or minus 4 mm, i.e. 2 mm on each side. Therefore, the length of the cylinder of the ceramic body may not be homogeneous at any point of its transverse faces, and it may therefore be required to have a translation movement relative to the housing. The present invention aims to overcome these disadvantages by providing a device for preventing a translational movement of the ceramic body relative to the housing in which it is inserted. With this objective in view, the device according to the invention, moreover, in accordance with the preamble cited above, is essentially characterized in that it further comprises: - adjustable holding means, configured to prevent relative translational movement longitudinal between said ceramic body and said housing. According to another characteristic, the adjustable holding means may be arranged on at least one of the upstream or downstream faces of said housing. In one embodiment, the holding means 25 may be adjustable by the cooperation between said holding means and adjusting means. Preferably, the holding means comprise a stop. Preferably, the adjusting means comprises an adjusting ring.

De préférence, la bague de réglage est une bague de réglage filetée. L'invention concerne également un filtre à particules comprenant le dispositif selon l'invention et 5 au moins un corps en céramique. L'invention concerne également un véhicule automobile équipé du filtre à particules selon l'invention. D'autres caractéristiques et avantages de la 10 présente invention apparaîtront plus clairement à la lecture de la description suivante donnée à titre d'exemple illustratif et non limitatif et faite en référence aux figures annexées dans lesquelles : la figure 1 illustre un boîtier de filtre à 15 particules selon l'art antérieur, la figure 2 est une coupe selon l'axe B-B de la figure 1, et la figure 3 est un agrandissement de la zone Z de la figure 2. 20 La figure 1 illustre une vue arrière d'un boîtier de filtre à particules selon l'art antérieur. Classiquement, les gaz d'échappement sont amenés par une tubulure d'entrée 9, ils traversent un ou plusieurs corps en céramique 1 pour ressortir par un cône 25 de sortie 8. Pour la simplicité de la présente description, seul un corps en céramique 1 est représenté. Le corps en céramique 1, ou monolithe, généralement sous forme de pain, est disposé dans un boîtier 3, et 30 sert pour le traitement des gaz d'échappement. Preferably, the adjusting ring is a threaded adjustment ring. The invention also relates to a particulate filter comprising the device according to the invention and at least one ceramic body. The invention also relates to a motor vehicle equipped with the particle filter according to the invention. Other features and advantages of the present invention will emerge more clearly on reading the following description given by way of illustrative and nonlimiting example and with reference to the appended figures in which: FIG. According to the prior art, FIG. 2 is a cross-section along the BB axis of FIG. 1, and FIG. 3 is an enlargement of zone Z of FIG. 2. FIG. a particle filter housing according to the prior art. Conventionally, the exhaust gases are fed through an inlet pipe 9, they pass through one or more ceramic bodies 1 to emerge through an outlet cone 8. For simplicity of the present description, only a ceramic body 1 is represented. The ceramic body 1, or monolith, generally in the form of bread, is disposed in a housing 3, and serves for the treatment of the exhaust gas.

Le plus souvent, le corps en céramique 1 possède un volume cylindrique, comme illustré sur les figures 1 et 2. Il est recouvert radialement par un mat 2, composé par exemple de fibres de céramique. L'une des faces du mat 2 est au contact du boîtier 3, et l'autre face du mat 2 est au contact du corps en céramique 1. Comme illustré à la figure 2, le corps en céramique 1 est maintenu côté tubulure d'entrée 9 (face amont) par des moyens de maintien, tels qu'une butée faite par un repli du boîtier 3. D'autres moyens de maintien peuvent être envisagés. Ces moyens de maintien maintiennent en translation le corps en céramique 1 dans le boîtier 3, côté tubulure d'entrée 9, de sorte à empêcher tout mouvement relatif de translation longitudinale entre ledit corps en céramique 1 et ledit boîtier 3, c'est-à-dire que ledit corps en céramique 1 est maintenu à l'intérieur du dit boîtier 3. Du côté de la sortie des gaz d'échappement, un cône de sortie 8 est fixé de manière amovible au boîtier 3 par des moyens de fixation amovibles, par exemple un jeu de vis 7 de fixation dont chaque pas de vis coopère avec un filetage correspondant (non représenté) du boîtier 3. De préférence, un joint d'étanchéité 6 est disposé entre le cône de sortie 8 et le boîtier 3. Most often, the ceramic body 1 has a cylindrical volume, as shown in Figures 1 and 2. It is covered radially by a mat 2, for example composed of ceramic fibers. One of the faces of the mat 2 is in contact with the housing 3, and the other face of the mat 2 is in contact with the ceramic body 1. As shown in Figure 2, the ceramic body 1 is held on the tubing side input 9 (upstream face) by holding means, such as a stop made by a fold of the housing 3. Other holding means can be envisaged. These holding means maintain in translation the ceramic body 1 in the housing 3, on the input pipe side 9, so as to prevent any relative longitudinal translational movement between said ceramic body 1 and said housing 3, that is to say that said ceramic body 1 is held inside said housing 3. On the outlet side of the exhaust gas, an outlet cone 8 is removably attached to the housing 3 by removable fixing means, for example a set of fastening screws 7, each screw thread of which cooperates with a corresponding thread (not shown) of the casing 3. Preferably, a seal 6 is placed between the outlet cone 8 and the casing 3.

Selon l'invention, on dispose, du côté de la sortie des gaz d'échappement (face aval), de moyens de maintien du corps en céramique 1 dans le boîtier 3, par exemple une butée 4. Les moyens de maintien coopèrent avec des moyens de réglage. Telle que représentée, la butée 4 coopère avec une bague de réglage filetée 5. According to the invention, the outlet side of the exhaust gas (downstream face) has means for holding the ceramic body 1 in the housing 3, for example an abutment 4. The holding means co-operate with adjustment means. As shown, the stop 4 cooperates with a threaded adjustment ring 5.

Ainsi, pour le montage ou le démontage du corps en céramique 1, il convient de démonter toutes les vis 7 de fixation, de manière à désolidariser le cône de sortie 8 du boîtier 3. Thus, for the assembly or disassembly of the ceramic body 1, it is necessary to disassemble all the fixing screws 7, so as to separate the exit cone 8 from the housing 3.

Ensuite, le joint d'étanchéité 6 peut alors être enlevé. Selon l'invention, la bague de réglage filetée 5 comprend avantageusement une pluralité d'évidements 5.1 (figure 2, figure 3) configurés pour permettre le passage 10 d'un outil de vissage non représenté. Grâce à l'outil de vissage, on peut alors enlever la butée 4 afin de changer le corps en céramique 1 ainsi que le mat 2. On peut également régler la position longitudinale de la butée 4 dans le boîtier 3.Then, the seal 6 can then be removed. According to the invention, the threaded adjustment ring 5 advantageously comprises a plurality of recesses 5.1 (Figure 2, Figure 3) configured to allow the passage 10 of a not shown screwing tool. Thanks to the screwing tool, it is then possible to remove the stop 4 in order to change the ceramic body 1 and the mat 2. It is also possible to adjust the longitudinal position of the stop 4 in the housing 3.

15 La présente invention n'est pas limitée au mode de réalisation précédemment décrit : la butée 4 peut ne pas être maintenue par la bague de réglage filetée 5 mais par exemple par une bague munie de moyens exerçant une force de rappel vers la butée 4.The present invention is not limited to the embodiment previously described: the stop 4 may not be maintained by the threaded adjustment ring 5 but for example by a ring provided with means exerting a restoring force towards the stop 4.

20 L'invention peut être mise en oeuvre dans un pot catalytique. 6 The invention can be implemented in a catalytic converter. 6

Claims (8)

REVENDICATIONS 1. Dispositif de traitement des gaz d'échappement d'un moteur à combustion interne, le dispositif comprenant : un boîtier (3) comprenant une face amont susceptible d'être reliée à une tubulure d'entrée (9) des gaz d'échappement et une face aval susceptible d'être reliée à un cône de sortie (8) des gaz d'échappement, ledit boîtier étant susceptible de recevoir au moins un corps en céramique (1) de traitement des gaz d'échappement, caractérisé en ce que le dispositif comprend en outre : des moyens de maintien (4) réglables, configurés pour éviter tout mouvement relatif de translation longitudinale entre ledit corps en céramique (1) et ledit boîtier (3). 1. Apparatus for treating the exhaust gas of an internal combustion engine, the device comprising: a housing (3) comprising an upstream face capable of being connected to an inlet pipe (9) of the exhaust gas and a downstream face capable of being connected to an outlet cone (8) of the exhaust gas, said housing being capable of receiving at least one ceramic body (1) for treating the exhaust gas, characterized in that the device further comprises: adjustable holding means (4), configured to avoid any longitudinal translation relative movement between said ceramic body (1) and said housing (3). 2. Dispositif selon la revendication 1, dans lequel les moyens de maintien (4) réglables sont disposés sur au moins l'une des faces amont ou aval dudit boîtier (3). 2. Device according to claim 1, wherein the adjustable holding means (4) are arranged on at least one of the upstream or downstream faces of said housing (3). 3. Dispositif selon l'une quelconque des revendications 20 précédentes, dans lequel les moyens de maintien (4) sont réglables par la coopération entre lesdits moyens de maintien (4) et des moyens de réglage (5). 3. Device according to any one of the preceding claims, wherein the holding means (4) are adjustable by cooperation between said holding means (4) and adjusting means (5). 4. Dispositif selon l'une quelconque des revendications précédentes, dans lequel les moyens de maintien (4) 25 comprennent une butée. 4. Device according to any one of the preceding claims, wherein the holding means (4) 25 comprise a stop. 5. Dispositif selon l'une quelconque des revendications 3 ou 4, dans lequel les moyens de réglage (5) comprennent une bague de réglage. 5. Device according to any one of claims 3 or 4, wherein the adjusting means (5) comprise an adjusting ring. 6. Dispositif selon la revendication 5, dans lequel la 30 bague de réglage est une bague de réglage filetée. The device of claim 5, wherein the adjusting ring is a threaded adjusting ring. 7. Filtre à particules comprenant le dispositif selon l'une quelconque des revendications précédentes et au moins un corps en céramique (1). 7 2927658 7. Particle filter comprising the device according to any one of the preceding claims and at least one ceramic body (1). 7 2927658 8. Véhicule automobile équipé d'un filtre à particules selon la revendication 7. 8. Motor vehicle equipped with a particulate filter according to claim 7.
FR0850964A 2008-02-15 2008-02-15 Exhaust gas treating device for particle filter in internal combustion engine of motor vehicle, has case receiving ceramic body for treating exhaust gas, and maintaining unit maintaining ceramic body in translation inside case Withdrawn FR2927658A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0850964A FR2927658A3 (en) 2008-02-15 2008-02-15 Exhaust gas treating device for particle filter in internal combustion engine of motor vehicle, has case receiving ceramic body for treating exhaust gas, and maintaining unit maintaining ceramic body in translation inside case

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FR0850964A FR2927658A3 (en) 2008-02-15 2008-02-15 Exhaust gas treating device for particle filter in internal combustion engine of motor vehicle, has case receiving ceramic body for treating exhaust gas, and maintaining unit maintaining ceramic body in translation inside case

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246311A (en) * 2016-08-30 2016-12-21 保隆(安徽)汽车配件有限公司 A kind of automobile exhaust system decorative tail tube

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441382A (en) * 1963-02-07 1969-04-29 Engelhard Ind Inc Catalyst cartridge
CA1030778A (en) * 1974-08-20 1978-05-09 Martin L. Bray Spring loaded catalytic converter with externally mounted spring
CA1031171A (en) * 1974-06-10 1978-05-16 Alfred Stawsky Catalytic device with longitudinal resilient members
US4250146A (en) * 1979-10-05 1981-02-10 Uop Inc. Caseless monolithic catalytic converter
JPS57165617A (en) * 1981-04-04 1982-10-12 Toyota Motor Corp Catalytic converter for purifying exhaust gas
US4884398A (en) * 1987-10-19 1989-12-05 Shin Caterpillar Mitsubishi Ltd. Method of and apparatus for reducing engine smoke emissions
EP0446422A1 (en) * 1990-03-10 1991-09-18 ERNST-APPARATEBAU GmbH & Co. Soot filter for diesel engines
US5145539A (en) * 1988-09-22 1992-09-08 Ngk Insulators, Inc. Method of producing a honeycomb structural body having at least one step protruded from or recessed in at least one portion of an outer circumferential surface thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441382A (en) * 1963-02-07 1969-04-29 Engelhard Ind Inc Catalyst cartridge
CA1031171A (en) * 1974-06-10 1978-05-16 Alfred Stawsky Catalytic device with longitudinal resilient members
CA1030778A (en) * 1974-08-20 1978-05-09 Martin L. Bray Spring loaded catalytic converter with externally mounted spring
US4250146A (en) * 1979-10-05 1981-02-10 Uop Inc. Caseless monolithic catalytic converter
JPS57165617A (en) * 1981-04-04 1982-10-12 Toyota Motor Corp Catalytic converter for purifying exhaust gas
US4884398A (en) * 1987-10-19 1989-12-05 Shin Caterpillar Mitsubishi Ltd. Method of and apparatus for reducing engine smoke emissions
US5145539A (en) * 1988-09-22 1992-09-08 Ngk Insulators, Inc. Method of producing a honeycomb structural body having at least one step protruded from or recessed in at least one portion of an outer circumferential surface thereof
EP0446422A1 (en) * 1990-03-10 1991-09-18 ERNST-APPARATEBAU GmbH & Co. Soot filter for diesel engines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246311A (en) * 2016-08-30 2016-12-21 保隆(安徽)汽车配件有限公司 A kind of automobile exhaust system decorative tail tube

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