FR3104637A1 - MOTOR VEHICLE COMBUSTION ENGINE EXHAUST GAS AFTER-TREATMENT DEVICE - Google Patents
MOTOR VEHICLE COMBUSTION ENGINE EXHAUST GAS AFTER-TREATMENT DEVICE Download PDFInfo
- Publication number
- FR3104637A1 FR3104637A1 FR1914682A FR1914682A FR3104637A1 FR 3104637 A1 FR3104637 A1 FR 3104637A1 FR 1914682 A FR1914682 A FR 1914682A FR 1914682 A FR1914682 A FR 1914682A FR 3104637 A1 FR3104637 A1 FR 3104637A1
- Authority
- FR
- France
- Prior art keywords
- locking
- enclosure
- axial
- positioning
- catalytic block
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 230000003197 catalytic effect Effects 0.000 claims abstract description 42
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 8
- 230000000295 complement effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- 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
- F01N3/2839—Arrangements for mounting catalyst support 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
- 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
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
-
- 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
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F01N13/1844—Mechanical joints
- F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
-
- 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
-
- 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
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2878—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration by using non-elastic means for retaining catalyst body in the housing, e.g. a metal chamfer, or by corrugation or deformation of the metal 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
- 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
- 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
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/26—Methods or apparatus for fitting, inserting or repairing different elements by bayonet fittings
-
- 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
- F01N3/2825—Ceramics
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
-
- 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
- F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
- F01N3/2842—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for monolithic supports, e.g. of honeycomb type
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)
Abstract
La présente invention propose un dispositif (10) de post-traitement de gaz d’échappement de moteur à combustion de véhicule automobile comportant : - une enceinte (12) délimitée par une paroi tubulaire (14) définissant une chambre tubulaire interne (15) ; - un bloc catalytique (22) logé dans ladite chambre, et dans lequel, à au moins une (28) de ses deux extrémités axiales, l’enceinte (12) est équipée d’une rondelle (26) de positionnement axial du bloc catalytique (22) à l’intérieur de la chambre tubulaire interne (15), caractérisé en ce que la rondelle (26) de positionnement est fixée de manière démontable à l’extrémité axiale (26) de l’enceinte (12) par des moyens (38, 40, 50) d’accouplement du type à baïonnette. Figure pour l'abrégé : 2The present invention provides a device (10) for post-treatment of motor vehicle combustion engine exhaust gas comprising: - an enclosure (12) delimited by a tubular wall (14) defining an internal tubular chamber (15); - a catalytic block (22) housed in said chamber, and in which, at at least one (28) of its two axial ends, the enclosure (12) is equipped with a washer (26) for axial positioning of the catalytic block (22) inside the internal tubular chamber (15), characterized in that the positioning washer (26) is removably fixed to the axial end (26) of the enclosure (12) by means (38, 40, 50) bayonet type coupling. Figure for abstract: 2
Description
Domaine technique de l’inventionTechnical field of the invention
La présente invention concerne un dispositif de post-traitement de gaz d’échappement de moteur à combustion de véhicule automobile.The present invention relates to a motor vehicle combustion engine exhaust gas post-treatment device.
L’invention concerne plus particulièrement un dispositif comportant des moyens permettant un remplacement aisé du bloc catalytique logé dans un tel dispositif.The invention relates more particularly to a device comprising means allowing easy replacement of the catalytic unit housed in such a device.
Arrière-plan techniqueTechnical background
De manière connue, un dispositif de post-traitement de gaz d’échappement de moteur à combustion de véhicule automobile comporte une enceinte délimitée par une paroi tubulaire cylindrique définissant une chambre tubulaire interne dans laquelle est logé un bloc catalytique.In known manner, a motor vehicle combustion engine exhaust gas post-treatment device comprises an enclosure delimited by a cylindrical tubular wall defining an internal tubular chamber in which a catalytic unit is housed.
Les documents FR-A1-2.643.418 ou FR-A1-3.048.450 décrivent et représentent des exemples d’un tel dispositif.Documents FR-A1-2,643,418 or FR-A1-3,048,450 describe and represent examples of such a device.
L’enceinte retient axialement le bloc catalytique et comporte à ses deux extrémités des orifices d’entrée et de sortie pour la circulation d’un flux axial de gaz à travers le bloc catalytique.The enclosure retains the catalytic block axially and comprises at its two ends inlet and outlet orifices for the circulation of an axial flow of gas through the catalytic block.
Le bloc catalytique, aussi appelé «monolithe», est une structure qui est délimitée par une enveloppe cylindrique qui, notamment avec interposition radiale d’un manchon de «nappe» aussi appelé «mat», est emmanchée à force à l’intérieur de l’enceinte tubulaire.The catalytic block, also called "monolith", is a structure which is delimited by a cylindrical casing which, in particular with the radial interposition of a "sheet" sleeve also called "mat", is press-fitted inside the tubular enclosure.
Le montage du bloc catalytique est complété par des moyens de positionnement axial du bloc catalytique à l’intérieur de l’enceinte.The assembly of the catalytic block is completed by means of axial positioning of the catalytic block inside the enclosure.
Le bloc catalytique doit pouvoir être changé et donc extrait hors de l’enceinte.The catalytic block must be able to be changed and therefore extracted from the containment.
Pour procéder à l’extraction axiale, à la presse, du bloc catalytique hors de l’enceinte, puis introduire à nouveau un bloc catalytique il est nécessaire d’avoir accès axialement aux deux extrémités de l’enceinte, et il est notamment nécessaire de pouvoir démonter les moyens de positionnement axial du bloc catalytique.To carry out the axial extraction, using a press, of the catalytic block from the enclosure, then to introduce a catalytic block again, it is necessary to have axial access to the two ends of the enclosure, and it is in particular necessary to to be able to dismantle the means for axial positioning of the catalytic block.
L’invention vise à faciliter les opérations de démontage et de remontage du bloc catalytique.The invention aims to facilitate the operations of disassembly and reassembly of the catalytic block.
L’invention propose un dispositif de post-traitement de gaz d’échappement de moteur à combustion de véhicule automobile comportant:
- une enceinte délimitée par une paroi tubulaire définissant une chambre tubulaire interne;
- un bloc catalytique logé dans ladite chambre,
et dans lequel, à au moins une de ses deux extrémités axiales, l’enceinte est équipée d’une rondelle de positionnement axial du bloc catalytique à l’intérieur de ladite chambre,
caractérisé en ce que la rondelle de positionnement est fixée de manière démontable à ladite au moins une extrémité axiale de l’enceinte par des moyens d’accouplement à baïonnette.The invention proposes a motor vehicle combustion engine exhaust gas post-treatment device comprising:
- an enclosure delimited by a tubular wall defining an internal tubular chamber;
- a catalytic block housed in said chamber,
and in which, at at least one of its two axial ends, the enclosure is equipped with a washer for axial positioning of the catalytic block inside said chamber,
characterized in that the positioning washer is removably fixed to said at least one axial end of the enclosure by bayonet coupling means.
Selon d’autres caractéristiques de l’invention:
- les moyens d’accouplement à baïonnette comportent une série d’encoches de verrouillage formées dans un tronçon d’extrémité axiale de la paroi tubulaire de l’enceinte et qui sont réparties angulairement de manière régulière, et comportent une série d’ergots de verrouillage formés à la périphérie de la rondelle de positionnement et qui sont répartis angulairement de manière régulière pour que chaque ergot de verrouillage soit reçu dans une encoche de verrouillage associée;
- chaque encoche de verrouillage est en forme de « L » et comporte une branche axiale d’introduction d’un ergot de verrouillage associé qui débouche dans le tronçon d’extrémité axiale de la paroi tubulaire de l’enceinte, et une branche tangentielle de réception de l’ergot de verrouillage associé en position verrouillée;
- la branche tangentielle d’au moins une encoche de verrouillage comporte une butée de verrouillage angulaire de l’ergot de verrouillage en position verrouillée dans l’encoche de verrouillage;
- chaque ergot de verrouillage est une patte radiale qui s’étend depuis un bord périphérique de la rondelle de positionnement, dans le plan de la rondelle de positionnement;
- la rondelle de verrouillage comporte des moyens pour son entraînement en rotation et/ou pour son positionnement angulaire par rapport à l’enceinte tubulaire dans une position d’introduction axiale des ergots de verrouillage dans les encoches de verrouillage associées;
- le dispositif comporte une bague qui est interposée axialement entre une face latérale de la rondelle de positionnement et une face d’extrémité axiale en vis-à-vis du bloc catalytique;
- la bague est montée comprimée axialement entre la rondelle de positionnement et le bloc catalytique;
- le bloc catalytique est emmanché à force à l’intérieur de la paroi tubulaire de l’enceinte
- le dispositif comporte un manchon qui est interposé radialement entre le bloc catalytique et la paroi de l’enceinte.According to other characteristics of the invention:
- the bayonet coupling means comprise a series of locking notches formed in an axial end section of the tubular wall of the enclosure and which are distributed angularly in a regular manner, and comprise a series of locking lugs formed at the periphery of the positioning washer and which are angularly distributed in a regular manner so that each locking lug is received in an associated locking notch;
- each locking notch is "L"-shaped and comprises an axial branch for introducing an associated locking lug which opens into the axial end section of the tubular wall of the enclosure, and a tangential branch for receiving the associated locking pin in the locked position;
- the tangential branch of at least one locking notch comprises an angular locking stop of the locking lug in the locked position in the locking notch;
- each locking lug is a radial lug which extends from a peripheral edge of the positioning washer, in the plane of the positioning washer;
- the locking washer comprises means for driving it in rotation and/or for positioning it angularly with respect to the tubular enclosure in a position of axial introduction of the locking lugs into the associated locking notches;
- the device comprises a ring which is interposed axially between a side face of the positioning washer and an axial end face facing the catalytic block;
- the ring is mounted compressed axially between the positioning washer and the catalytic block;
- the catalytic block is force-fitted inside the tubular wall of the enclosure
- The device comprises a sleeve which is interposed radially between the catalytic block and the wall of the enclosure.
Brève descriptions des figuresBrief descriptions of figures
D'autres caractéristiques et avantages de l'invention apparaitront au cours de la lecture de la description détaillée qui va suivre pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels:Other characteristics and advantages of the invention will appear during the reading of the detailed description which will follow for the understanding of which reference will be made to the appended drawings in which:
Description détaillée de l'inventionDetailed description of the invention
Dans la description qui va suivre, des éléments identiques, similaires ou analogues seront désignés par les mêmes chiffres de référence.In the following description, identical, similar or analogous elements will be designated by the same reference numerals.
On a représenté à la figure 1 un pot catalytique 100 de conception générale connue pour le traitement des gaz d'échappement du moteur à combustion d'un véhicule automobile.There is shown in Figure 1 a catalytic converter 100 of known general design for the treatment of exhaust gases from the combustion engine of a motor vehicle.
Le boîtier 102 du pot catalytique 100 loge notamment un dispositif de post-traitement 10 qui est de conception générale cylindrique à section circulaire selon un axe principal A de circulation du flux de gaz d'échappement à travers le dispositif de post-traitement de 10.The housing 102 of the catalytic converter 100 houses in particular a post-treatment device 10 which is of cylindrical general design with a circular section along a main axis A of circulation of the flow of exhaust gases through the post-treatment device 10.
Le dispositif de post-traitement 10 comporte une enceinte ou enveloppe externe 12 de forme générale tubulaire qui comporte notamment une paroi tubulaire 14 qui délimite latéralement une chambre tubulaire interne 15.The post-treatment device 10 comprises an enclosure or outer casing 12 of generally tubular shape which notably comprises a tubular wall 14 which laterally delimits an internal tubular chamber 15.
En considérant l'orientation des figures, l’extrémité supérieure de la paroi tubulaire 14 se prolonge par une bride radiale externe 16 de fixation.Considering the orientation of the figures, the upper end of the tubular wall 14 is extended by an external radial flange 16 for fixing.
Comme on peut le voir à la figure 1, la bride radiale externe 16 permet d'assurer le montage et la fixation de l'enceinte 12 et du dispositif de post-traitement 10 dans le pot catalytique 100, par exemple ici au moyen d'une série de vis démontables 18.As can be seen in Figure 1, the outer radial flange 16 ensures the mounting and fixing of the enclosure 12 and the post-treatment device 10 in the catalytic converter 100, for example here by means of a series of removable screws 18.
La paroi ou jupe tubulaire 14 est délimitée par une face interne cylindrique concave 20 de section circulaire et qui est parfaitement lisse sur toute sa hauteur.The tubular wall or skirt 14 is delimited by a concave cylindrical internal face 20 of circular section and which is perfectly smooth over its entire height.
De manière connue, le dispositif de post-traitement 10 comporte un bloc catalytique de forme générale cylindrique 22 qui est logé axialement à l'intérieur de l'enceinte 12, ici avec l'interposition radiale d'un manchon 24.In known manner, the post-treatment device 10 comprises a catalytic block of generally cylindrical shape 22 which is housed axially inside the enclosure 12, here with the radial interposition of a sleeve 24.
Le manchon 24, est un matelas à base de fibres minérales et végétales qui est monté radialement entre la face interne 20 de la paroi tubulaire 14 et la surface cylindrique externe convexe 23 du bloc catalytique 22, par emmanchement axial à l'intérieur de l'enceinte 12.The sleeve 24 is a mattress based on mineral and plant fibers which is mounted radially between the internal face 20 of the tubular wall 14 and the convex external cylindrical surface 23 of the catalytic block 22, by axial fitting inside the pregnant 12.
Le manchon 24 permet d’assurer une étanchéité sur les bordures du bloc 22 en fonction des contraintes de fonctionnement du moteur et notamment les hautes températures des gaz brulés. Le bloc catalytique 22 est susceptible de glisser selon l’axe A.The sleeve 24 makes it possible to ensure a seal on the edges of the block 22 according to the operating constraints of the engine and in particular the high temperatures of the burnt gases. The catalytic block 22 is likely to slide along axis A.
L’enceinte 12 peut présenter un rétrécissement de section ou une contrainte particulière d’emmanchement axial ou d’extraction du bloc catalytique 22 nécessitant de privilégier un coté particulier de l’enceinte 12 destiné à être orienté en aval selon le sens des flux de gaz.The enclosure 12 may have a section narrowing or a particular constraint of axial fitting or extraction of the catalytic block 22 requiring to favor a particular side of the enclosure 12 intended to be oriented downstream according to the direction of the gas flows. .
Pour positionner axialement le bloc catalytique 22, selon l'axe vertical A, le dispositif de post-traitement 10 comporte une rondelle 26 de positionnement qui est agencée au voisinage du bord d'extrémité axiale inférieure 28 de la paroi tubulaire 14, à l'opposé de la bride de fixation supérieure 16.To position the catalytic block 22 axially, along the vertical axis A, the post-treatment device 10 comprises a positioning washer 26 which is arranged in the vicinity of the lower axial end edge 28 of the tubular wall 14, at the opposite top mounting flange 16.
La rondelle de positionnement 26 comporte deux faces latérales planes annulaires et opposées dont une face supérieure 32.The positioning washer 26 has two annular and opposite planar side faces including an upper face 32.
A titre non limitatif, dans l'exemple illustré aux figures, la face transversale inférieure 21 du bloc catalytique 22 est en appui axialement vers le bas contre la face latérale supérieure 32 avec interposition d'une bague 34.By way of non-limiting example, in the example illustrated in the figures, the lower transverse face 21 of the catalytic block 22 bears axially downwards against the upper lateral face 32 with the interposition of a ring 34.
La bague 34 et une bague à section en L qui délimite un logement interne 35 dans lequel est reçu le tronçon d'extrémité axiale inférieure du bloc catalytique 22.The ring 34 is an L-section ring which delimits an internal housing 35 in which the lower axial end section of the catalytic block 22 is received.
La bague 34 comporte un anneau inférieur 36 d'orientation transversale qui est interposé axialement entre la face transversale inférieure 21 du bloc catalytique 22 et la face latérale supérieure 32 de la rondelle de positionnement 26.The ring 34 comprises a lower ring 36 of transverse orientation which is interposed axially between the lower transverse face 21 of the catalytic block 22 and the upper lateral face 32 of the positioning washer 26.
La bague 34 peut être réalisée en matériau compressible élastiquement.The ring 34 can be made of elastically compressible material.
Conformément aux enseignements de l'invention, pour assurer le montage et la fixation de la rondelle de positionnement 26 sur le tronçon d'extrémité axiale inférieure de la paroi tubulaire 14, il est prévu des moyens 38 d'accouplement du type baïonnette.In accordance with the teachings of the invention, to ensure the assembly and fixing of the positioning washer 26 on the lower axial end section of the tubular wall 14, means 38 of the bayonet type coupling are provided.
Ces moyens 38 d'accouplement à baïonnette comportent des séries d'encoches de verrouillage et d'ergots de verrouillage complémentaires permettant un montage par introduction axiale des ergots de verrouillage dans les encoches de verrouillage, puis un verrouillage par déplacement angulaire ou rotation autour de l'axe d'introduction axiale.These bayonet coupling means 38 comprise a series of locking notches and complementary locking lugs allowing mounting by axial introduction of the locking lugs into the locking notches, then locking by angular displacement or rotation around the axial insertion axis.
La série d'encoches de verrouillage 40 est formée dans la paroi tubulaire 14.The series of locking notches 40 are formed in the tubular wall 14.
A titre non limitatif, il est ici prévu une série de six encoches de verrouillage 40 qui sont réparties angulairement de manière régulière autour de l'axe A.By way of non-limiting, there is provided here a series of six locking notches 40 which are angularly distributed in a regular manner around the axis A.
Chaque encoche de verrouillage 40 présent un profil en "L" avec une branche axiale 42 d'introduction qui débouche axialement vers le bas dans le bord inférieur 28 de la paroi tubulaire 12.Each locking notch 40 has an "L" profile with an axial branch 42 of introduction which opens axially downwards into the lower edge 28 of the tubular wall 12.
A son extrémité supérieure, chaque branche axiale 42 se prolonge par une branche tangentielle horizontale 44.At its upper end, each axial branch 42 is extended by a horizontal tangential branch 44.
Comme on peut le voir notamment aux figures 3 et 4, au voisinage de son raccordement avec la branche axiale 42, chaque branche tangentielle 44 comporte une butée angulaire 46 orientée axialement à l'opposé du bord extrémité inférieur 28.As can be seen in particular in Figures 3 and 4, in the vicinity of its connection with the axial branch 42, each tangential branch 44 comprises an angular stop 46 oriented axially opposite the lower end edge 28.
De manière complémentaire, la rondelle de positionnement 26 comporte six ergots de verrouillage 50 qui sont répartis angulairement de manière régulière.In a complementary manner, the positioning washer 26 comprises six locking lugs 50 which are distributed angularly in a regular manner.
Chaque ergot 26 est une patte qui s'étend radialement vers l'extérieur à partir du bord annulaire périphérique 27 de la rondelle de positionnement 26.Each lug 26 is a lug which extends radially outwards from the peripheral annular edge 27 of the positioning washer 26.
Chaque patte formant ergot de verrouillage 26 est dimensionnée de manière à pouvoir être introduit axialement, de bas en haut en considérant les figures, dans 1 branche axiale 42 d'une encoche de verrouillage associée 40 puis être introduite dans la branche tangentielle de verrouillage 44 en franchissant la butée 46.Each lug forming a locking lug 26 is dimensioned so as to be able to be introduced axially, from bottom to top considering the figures, in 1 axial branch 42 of an associated locking notch 40 then to be introduced into the tangential locking branch 44 in crossing the stop 46.
Afin d'éviter toute séparation accidentelle de la rondelle positionnement 26 de la paroi tubulaire 12, l'anneau inférieur 36 de la bague 34 est monté comprimer axialement entre la face supérieure 32 de la rondelle positionnement 26 et la face transversale inférieure 21 du bloc catalytique 22.In order to avoid any accidental separation of the positioning washer 26 from the tubular wall 12, the lower ring 36 of the ring 34 is mounted to compress axially between the upper face 32 of the positioning washer 26 and the lower transverse face 21 of the catalytic block. 22.
Afin de faciliter la préhension, la manipulation et l'orientation angulaire de la bague de positionnement 26, celle-ci comporte ici une série de quatre trous 48.In order to facilitate gripping, handling and angular orientation of the positioning ring 26, the latter here comprises a series of four holes 48.
La conception proposait des moyens 38 de verrouillage à baïonnette avec les encoches de verrouillage 40 formés dans la paroi tubulaire 12 permet, après démontage de la rondelle positionnement 26, de pouvoir extraire axialement le bloc catalytique 22 et le manchon 24 axialement vers le bas et/ou d'introduire axialement le bloc catalytique 22 à l'intérieur de la paroi tubulaire 12 verticalement de bas en haut.The design proposed bayonet locking means 38 with the locking notches 40 formed in the tubular wall 12 allow, after removal of the positioning washer 26, to be able to axially extract the catalytic block 22 and the sleeve 24 axially downwards and/or or to introduce the catalytic block 22 axially inside the tubular wall 12 vertically from bottom to top.
Claims (10)
- une enceinte (12) délimitée par une paroi tubulaire (14) définissant une chambre tubulaire interne (15);
- un bloc catalytique (22) logé dans ladite chambre,
et dans lequel, à au moins une (28) de ses deux extrémités axiales, l’enceinte (12) est équipée d’une rondelle (26) de positionnement axial du bloc catalytique (22) à l’intérieur de ladite chambre tubulaire interne (15),
caractérisé en ce que la rondelle (26) de positionnement est fixée de manière démontable à ladite au moins une extrémité axiale (26) de l’enceinte (12) par des moyens (38, 40, 50) d’accouplement à baïonnette.Motor vehicle combustion engine exhaust gas post-treatment device (10) comprising:
- an enclosure (12) delimited by a tubular wall (14) defining an internal tubular chamber (15);
- a catalytic block (22) housed in said chamber,
and in which, at at least one (28) of its two axial ends, the enclosure (12) is equipped with a washer (26) for axial positioning of the catalytic block (22) inside said chamber internal tubular (15),
characterized in that the positioning washer (26) is removably fixed to said at least one axial end (26) of the enclosure (12) by bayonet coupling means (38, 40, 50).
- une série d’encoches (40) de verrouillage formées dans un tronçon d’extrémité axiale de la paroi tubulaire (14) de l’enceinte (12) et qui sont réparties angulairement de manière régulière; et
- une série d’ergots (50) de verrouillage formés à la périphérie (27) de la rondelle (26) de positionnement et qui sont répartis angulairement de manière régulière pour que chaque ergot (50) de verrouillage soit reçu dans une encoche (40) de verrouillage associée.Device (10) according to Claim 1, characterized in that the bayonet coupling means comprise:
- a series of locking notches (40) formed in an axial end section of the tubular wall (14) of the enclosure (12) and which are distributed angularly in a regular manner; And
- a series of locking lugs (50) formed on the periphery (27) of the positioning washer (26) and which are angularly distributed in a regular manner so that each locking lug (50) is received in a notch (40 ) associated lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1914682A FR3104637B1 (en) | 2019-12-17 | 2019-12-17 | AUTOMOTIVE COMBUSTION ENGINE EXHAUST GAS POST-TREATMENT DEVICE |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1914682 | 2019-12-17 | ||
| FR1914682A FR3104637B1 (en) | 2019-12-17 | 2019-12-17 | AUTOMOTIVE COMBUSTION ENGINE EXHAUST GAS POST-TREATMENT DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3104637A1 true FR3104637A1 (en) | 2021-06-18 |
| FR3104637B1 FR3104637B1 (en) | 2022-11-18 |
Family
ID=69811260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1914682A Active FR3104637B1 (en) | 2019-12-17 | 2019-12-17 | AUTOMOTIVE COMBUSTION ENGINE EXHAUST GAS POST-TREATMENT DEVICE |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR3104637B1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3512580A1 (en) * | 1985-04-06 | 1986-10-16 | Üründül, Celâl, 6800 Mannheim | Fixing of a catalytic converter body in a cartridge sleeve for elastic mounting of the catalytic converter body in a housing |
| FR2643418A1 (en) | 1989-02-17 | 1990-08-24 | Toyoda Automatic Loom Works | EXHAUST GAS PURIFIER DEVICE FOR DIESEL ENGINE |
| EP1286099A2 (en) * | 2001-08-14 | 2003-02-26 | FRÄNKISCHE ROHRWERKE GEBR. KIRCHNER GmbH & Co KG | Connecting assembly of corrugated plastic pipes |
| EP1444424A2 (en) * | 2001-10-25 | 2004-08-11 | Eminox Limited | Gas treatment apparatus |
| DE202004019176U1 (en) * | 2004-12-11 | 2005-03-17 | Gillet Heinrich Gmbh | Connector for gas pipes is made up of two tubular sections with integral bayonet fittings at their bases |
| EP1644621A1 (en) * | 2003-06-26 | 2006-04-12 | Scania CV AB (publ) | Locking device for the mounting of at least one exhaust cleaning component in an exhaust passage |
| FR3048450A1 (en) | 2016-03-01 | 2017-09-08 | Renault Sas | CATALYTIC POST-PROCESSING DEVICE OF A MOTOR VEHICLE HAVING A DEFLECTOR |
-
2019
- 2019-12-17 FR FR1914682A patent/FR3104637B1/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3512580A1 (en) * | 1985-04-06 | 1986-10-16 | Üründül, Celâl, 6800 Mannheim | Fixing of a catalytic converter body in a cartridge sleeve for elastic mounting of the catalytic converter body in a housing |
| FR2643418A1 (en) | 1989-02-17 | 1990-08-24 | Toyoda Automatic Loom Works | EXHAUST GAS PURIFIER DEVICE FOR DIESEL ENGINE |
| EP1286099A2 (en) * | 2001-08-14 | 2003-02-26 | FRÄNKISCHE ROHRWERKE GEBR. KIRCHNER GmbH & Co KG | Connecting assembly of corrugated plastic pipes |
| EP1444424A2 (en) * | 2001-10-25 | 2004-08-11 | Eminox Limited | Gas treatment apparatus |
| EP1644621A1 (en) * | 2003-06-26 | 2006-04-12 | Scania CV AB (publ) | Locking device for the mounting of at least one exhaust cleaning component in an exhaust passage |
| DE202004019176U1 (en) * | 2004-12-11 | 2005-03-17 | Gillet Heinrich Gmbh | Connector for gas pipes is made up of two tubular sections with integral bayonet fittings at their bases |
| FR3048450A1 (en) | 2016-03-01 | 2017-09-08 | Renault Sas | CATALYTIC POST-PROCESSING DEVICE OF A MOTOR VEHICLE HAVING A DEFLECTOR |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3104637B1 (en) | 2022-11-18 |
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