WO2005063462A1 - Bloc pour la filtration de particules contenues dans les gaz d'echappement d'un moteur a combustion interne - Google Patents
Bloc pour la filtration de particules contenues dans les gaz d'echappement d'un moteur a combustion interne Download PDFInfo
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- WO2005063462A1 WO2005063462A1 PCT/FR2004/003339 FR2004003339W WO2005063462A1 WO 2005063462 A1 WO2005063462 A1 WO 2005063462A1 FR 2004003339 W FR2004003339 W FR 2004003339W WO 2005063462 A1 WO2005063462 A1 WO 2005063462A1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/247—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the cells
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2462—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure the outer peripheral sealing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2474—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the walls along the length of the honeycomb
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2476—Monolithic structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2482—Thickness, height, width, length or diameter
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2451—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure
- B01D46/2486—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure characterised by the shapes or configurations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
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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
- F01N3/02—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2418—Honeycomb filters
- B01D46/2498—The honeycomb filter being defined by mathematical relationships
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/60—Multitubular or multicompartmented articles, e.g. honeycomb
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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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/06—Ceramic, e.g. monoliths
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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
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/32—Honeycomb supports characterised by their structural details characterised by the shape, form or number of corrugations of plates, sheets or foils
-
- 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
- F01N2330/30—Honeycomb supports characterised by their structural details
- F01N2330/48—Honeycomb supports characterised by their structural details characterised by the number of flow passages, e.g. cell density
-
- 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
- F01N2340/00—Dimensional characteristics of the exhaust system, e.g. length, diameter or volume of the apparatus; Spatial arrangements of exhaust apparatuses
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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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
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- 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
Definitions
- the invention relates to a filter block intended in particular for the filtration of particles contained in the exhaust gas of an internal combustion engine, comprising peripheral input and output channels arranged alternately at the periphery of said block and comprising each an outer wall exposed outside said block and an inner wall disposed within said block.
- the invention also relates to a body formed by assembling a plurality of said blocks, and to a block extrusion die according to the invention.
- the exhaust gas can be purified by means of a particle filter such as that shown in Figures 1 and 2, known from the prior art.
- a particle filter 1 is shown in FIG. 1 in cross-section along the sectional plane BB shown in FIG. 2, and in FIG. 2 in longitudinal section along the sectional plane AA shown in FIG.
- the particle filter 1 conventionally comprises at least one filter body 3, inserted in a metal casing 5.
- the filter body 3 results from rassembfage and machining a plurality of blocks 11, referenced 11 a-11 1.
- a ceramic material cordierite, silicon carbide, etc.
- the extruded porous structure conventionally has the shape of a rectangular parallelepiped, comprising four longitudinal edges 11 ', extending along a D-D axis between two substantially square upstream faces 12 and downstream 13 on which a plurality of adjacent channels 14 open, rectilinear, parallel to the axis D-D.
- the extruded porous structures are alternately plugged on the upstream face 12 or on the downstream face 13 by upstream plugs 15s and downstream 15e, respectively, as is well known, to form "output channel” type channels 14s and “input channels” 14e, respectively.
- the output 14s and input 14e channels open outward through 19s outlet openings and input 19e, respectively, extending on the downstream faces 13 and upstream 12, respectively.
- Each channel 14 thus defines an internal volume 20 delimited by the side wall 22, a closure cap 15s or 15e, and an opening 19s or 19e opening outwards.
- the inlet 14e and exit 14s channels are in fluid communication by their side walls 22.
- the blocks 11a-11i are assembled together by bonding by means of seals 27 made of ceramic cement generally made of silica and / or carbide. silicon and / or aluminum nitride.
- the assembly thus formed can then be machined to take, for example, a round section.
- the outer blocks 11a, 11b, 11c, 11d, 11e, 11f, 11g, 11h have an outer face rounded by machining. This results in a cylindrical filter body 3 of DC axis, which can be inserted into the casing 5, an exhaust gas-tight peripheral seal 28 being disposed between the outer filter blocks 11a-11h and the casing 5 As indicated by the arrows shown in FIG.
- the flow F of the exhaust gases enters the filter body 3 through the openings 19e of the inlet channels 14e, passes through the filtering side walls 22 of these channels to join the 14s outlet channels, then escapes outward through the openings 19s.
- the particles, or "soot" accumulated in the inlet channels 14e of the filter body 3 alter the performance of the engine. For this reason, the filter body 3 must be regenerated regularly, for example every 500 kilometers. Regeneration, or "unclogging”, consists in oxidizing the soot by heating it to a temperature that allows it to ignite. During the regeneration phases, the exhaust gases transport downstream all the heat energy released by the combustion of soot.
- the combustion zones are uniformly distributed in the filter body 3.
- the peripheral zones of the filter body 3 are cooled, through the metal shell 5, by the surrounding air.
- the temperature differs according to the areas of the filter body 3 and does not vary uniformly.
- the purpose of the invention is to provide a new block 11 capable of reducing the risk of cracks.
- This object is achieved by means of a filter block intended in particular for the filtration of particles contained in the exhaust gas of an internal combustion engine, comprising peripheral inlet and outlet channels arranged alternately at the periphery of said block. and each having an outer wall exposed outside said block and an inner wall disposed within said bfoc.
- the filter block according to the invention is remarkable in that it comprises at least one group of two adjacent peripheral channels such that, in a transverse sectional plane, the ratio R of the average thickness "E" of all the outer walls of said group on the average thickness "e” of all the inner walls of said group is greater than 1, 2.
- the average thickness of the peripheral wall formed by the outer walls of the channels of said group is therefore increased, which locally strengthens the block and thus advantageously limits the risk of cracks.
- the peripheral wall has locally, to the right of the peripheral channels it covers, an average thickness greater than the average thickness of the inner walls of these channels.
- the peripheral wall thus has a "medium thickness", which does not exclude that, on a portion of the external walls considered, for example over the width of one of said channels, or even beyond, the thickness of the peripheral wall can be less than 1.2 times the average thickness of the internal walls of these channels.
- the thickness of the outer walls of the channels of said group is greater than or equal, in every respect, to the average thickness "e" of all the internal walls of these channels. More preferably, in said transverse section plane, the ratio R * of the minimum thickness "E m j ⁇ " of all the outer walls of said group on the average thickness "e" of the set of internal walls said group is greater than 1.2. The resistance to cracking is further improved.
- the invention also relates to a filter body intended for a particulate filter, which is remarkable in that it comprises at least one filter block according to the invention.
- the invention also relates to an extrusion die shaped to form, by extrusion of a ceramic material, a structure provided with channels suitable for the manufacture of a filter block according to the invention.
- FIG. 1 shows a particle filter according to the prior art, in cross section along the transverse sectional plane BB shown in Figure 2;
- - Figure 2 shows the same particle filter, according to the longitudinal sectional plane AA shown in Figure 1;
- FIG. 3 shows in perspective a block according to the invention, in the preferred embodiment
- FIG. 4 schematically shows a filter block according to the invention in cross section along a transverse plane P, looking towards the downstream face of the block;
- FIG. 5 represents a detail of FIG. 4
- FIGS. 6 and 7 show, in plan view, longitudinal sections, along a median plane M as represented in FIG. 8, of filter bodies consisting of 16 blocks according to the invention and to the invention, respectively, after having undergone severe regeneration tests;
- FIG. 8 shows in cross section, a filter body used for said tests.
- the number of channels represented is much smaller than that of filtering blocks conventionally marketed.
- the different elements are not necessarily represented on the same scale.
- the thickness of the walls separating the different channels is not to scale and does not constitute a limit to the invention.
- Identical references have been used in the various figures to designate identical or similar elements.
- Figures 1, 2 and 3 having been described in the preamble, reference is made to Figure 4, also partially described above.
- the block 11 shown in detail in FIG. 4 comprises sets of inlet channels 14e and adjacent outlet channels 14s, arranged relative to each other so that all the gas filtered by any input channel passes into output channels adjacent to said input channel.
- the input 14e and output 14s channels are parallel and rectilinear along the length L of the filter block.
- the sets of input channels 14e and output channels 14s are nested within each other so as to form, in cross-section, a checkered pattern where said input channels alternate with said output channels, in which fe sense of height (direction y) as in that of the farter (direction x).
- the entry channels 29e and 29s which delimit an edge 11 'of the bfoc 11 are called "angle channels.” In any transverse section plane, all the input channels
- the cross section of the input channels 14e is different from that of the output channels 14s.
- the cross-sections of the input channels 14e are greater than those of the output channels 14s, in order to increase the overall volume of the input channels at the expense of that of the output channels. The storage capacity of the soot is advantageously increased.
- the input channels 14e and 14s are delimited by non-planar wall elements 40, preferably concave on the side of the input channels 14e and convex on the side of the output channels 14s.
- a "portion of the wall” is a portion of the side wall 22 of a channel delimited by joints 42.
- the term “join” is the limit of a sidewall portion shared with an adjacent channel. For an inner channel, this line corresponds to a junction zone between the side walls of two channels of the same type. For a network of channels of square section, the joints of a channel are therefore the “corners" or "angles" of the interior volume 20.
- the wall elements 40 follow one another, in cross section and in a horizontal row (depending on the x-axis) or vertical (depending on the y-axis) of channels, to define a sinusoidal shape or "in wave"("wavy” in English).
- the wall elements 40 substantially wave a half-sine period over the width of a channel.
- "Peripheral channels" 14p are the channels located at the periphery of a block 11.
- the side wall 22 of the peripheral channels 14p has an outer wall 44, that is to say in contact with the outside of the block 11, and an inner wall 46, i.e. shared with adjacent channels.
- the outer wall 44 comprises two (40 ⁇ , 40 2 ) or one (40 3 ) wall element (s), depending on whether the channel considered, 14pi and 14p 2 respectively, is a corner channel or not.
- the inner wall 44 comprises two (40 4 and 40 5 ) or three (40 6 , 40 7 , 40 8 ) wall element (s) respectively, depending on whether the channel considered, 14p ⁇ and 14p 2 respectively, is a angle channel or not.
- the outer walls 44 of the peripheral channels constitute a lateral peripheral wall 30, forming the four faces 16a-d of the outer surface 16 of the filtering baffle 11. That is a group G of two adjacent peripheral channels 50 and 52.
- the side wall of the channel 50 is constituted by an outer wall 44 and an inner wall 46.
- the side wall of the channel 52 is constituted by an outer wall 54 and an inner wall 56.
- This group necessarily comprises an inlet channel 50 and an outlet channel 52, separate by a common wall element 58.
- E and "e” mean the average thickness of the two outer walls 44 and 54 and the two inner walls 46 and 56 of this group, respectively, measured in FIG. transverse section plane P.
- R the ratio E / e and R * the ratio Em in / e of the minimum thickness "E m i n " of all the outer walls 44 and 54 of said group G on the average thickness "e”.
- R, and preferably R * is greater than 1.2, preferably greater than 1.5. More preferably the ratio R, and preferably R *, is greater than 1.9 and, preferably, less than 2.1. A ratio R, and preferably R *, substantially equal to 2 is most preferred. Preferably, the ratio R and / or the ratio R * is constant regardless of said transverse section plane P considered.
- all the possible groups G of two adjacent peripheral channels not comprising an angle channel have a ratio R or R * according to the invention, preferably identical for all these groups. More preferably, all the groups comprising an angle channel also have a ratio R or R * according to the invention, preferably identical for all these groups.
- the wall elements of the outer walls of the corner channels have a profile identical to the wall elements of the outer walls of the channels of the same type of groups having no corner canaf.
- the average thickness of the peripheral wall of the block 11 is substantially equal to the average thickness "E" of any group G of two adjacent peripheral channels not including a channel. angle.
- E m i n is constant over the entire length L of the block.
- the peripheral wall 30 of the block 11 is thus reinforced by an "average thickness" of material arranged regularly on the four faces 16a-d, and extending over the entire length "L" of the block 11, from the upstream face 12 to the downstream face 13.
- the average thickness the outer wall of the outlet channel is greater than the average thickness of the outer wall of the inlet channel.
- the outer face 60 of the outer walls 44 and 54 of the peripheral channels 50 and 52 is substantially flat and the inner face 62 has a sinusoidal shape or a sinusoidal fraction. More preferably, the outer walls of the peripheral channels are shaped so that the four faces 16a-d of the block 11 are planar.
- the handling of the block and its storage are facilitated, which is particularly useful in case of automation of manufacture.
- the channels located inside the baffle 11, that is to say having no external wall, are called “inner channels” 14i.
- the average thickness of the peripheral wall of the block is arranged such that, in any cross-sectional plane P, the passage sections of the input and output peripheral channels 14p are substantially identical to those of the internal channels 14i. entry and exit, respectively.
- the application of an excess thickness does not modify the volumes of the peripheral channels 14p and therefore the overall efficiency of the filter block 11.
- the block according to the invention is monobloc and manufactured by extrusion using a adapted die, according to techniques known to those skilled in the art.
- the "average thickness" of the peripheral wall is not reported on the filter block, but came from matter with him.
- the rigidity of the filter block and its resistance to cracking are advantageously improved.
- any risk of separation of material forming the excess thickness is advantageously removed.
- the manufacture of the filter block is simplified. After assembly, a set of filter blocks according to the present invention forms a structure with local extra thicknesses. Preferably, these oversprayers are distributed substantially uniformly. After possible machining of this structure so as to form a filter body, a material allowance may be added at the periphery of the filter body. The risk of cracks is further reduced.
- the assembled blocks comprise peripheral walls 30 having "average thicknesses" (that is to say considering the average thickness of the outer walls of groups of two peripheral channels) regularly distributed to the outer surface of the blocks. It thus results from the assembly of the blocks an internal network of extra thicknesses within the filter body improving its resistance to cracking.
- all the peripheral walls 30 of all the assembled blocks have a constant thickness at least 1, 2 times greater than the average thickness of the inner walls of the inner channels of these blocks.
- the peripheral extra thicknesses of the blocks thus form, in cross-section, a grid which considerably increases the resistance to cracking with respect to a filter body which would only have an extra thickness at its periphery.
- the extra thickness around the blocks varies regularly, preferably substantially sinusoidally, so as to increase the volume of the input channels relative to the volume of the output channels, as shown in FIG. 4. More preferably, whatever the embodiment, the thickness of the inner walls 56 of the peripheral channels is identical to the thickness of the walls of the inner channels. The efficiency of the filtration through all the internal walls is thus substantially the same, regardless of the internal wall considered.
- the manufacture of the filter body is also simplified, the filter blocks can be assembled indifferently to any position within the filter body. Tests were carried out to evaluate the cracking resistance of a filter body composed of 16 conventional filter blocks (FIG. 7) and of a filter body composed of 16 blocks of the same type but including, like the block shown in FIG.
- FIG. 6 a reinforced peripheral wall 30 according to the invention.
- These two filter bodies were subjected to a severe regeneration (corresponding to an engine speed of 120 km / hour, then idle followed by a post-injection) to 5 g / l on engine bench.
- the filter blocks were then cut longitudinally along a median plane. The longitudinal sections of four filter blocks are thus observed.
- a comparison of the longitudinal sections shown in FIGS. 6 and 7 clearly shows that the blocks according to the invention do not exhibit cracks, unlike blocks according to the prior art which have cracks "f" of a length generally greater than 0.5 mm and can extend over the entire length L of the block. Cracks are visible in the bare ceif and microscope.
- the reinforced structure filter block according to the invention has a better resistance to cracking than the blocks according to the prior art.
- the present invention is not limited to the embodiment described and shown above, provided ilfustratif and not restrictive.
- not all groups of two adjacent peripheral channels necessarily have the same conformation.
- the extra thickness of the outer walls of a group of two adjacent peripheral channels does not necessarily extend over the entire length L of the block.
- the extra thickness can also change, periodically or not, in a longitudinal or transverse plane.
- the cross section of a channel could also evolve, periodically or not, along this channel.
- not all groups of two adjacent peripheral channels of the block also have outer walls with an extra thickness, although this is preferable for improving the resistance to cracking of the bfoc.
- at least the groups of two adjacent peripheral channels comprising an angle channel have an extra thickness according to the invention.
- the shape, in particular the section, the dimensions and the number of channels are not limiting.
- the section of the input channels could also be identical to that of the output channels.
- the peripheral channels may also have a different section of the inner channels of the same type, for example because they have been truncated during the machining of the block.
- the filtering bifoc 11 may have any shape whatsoever. It is also possible to provide an extra thickness on the surface of the block 11 by fixing additional material by gluing, welding or any other known technique.
- the added material may be identical to or different from the material constituting the block 11.
- An excess thickness of material is preferably applied, after extrusion and before sintering, on the faces of the blocks that have been machined, for example on the rounded outer faces of the blocks 11a. -11b.
- the method of manufacturing a filter block according to the invention can then comprise the following successive steps: a) extrusion of a ceramic material so as to form a porous honeycomb structure, b) application of a thickness of a material, identical to or different from said ceramic material, on at least a portion of the outer surface of said porous structure, and c) drying and sintering of said porous structure to obtain a filtering bfoc.
- the porous structure can be dried between steps a) and b), and then machined, the thickness of material being preferably applied at least on a portion of said outer surface having been machined.
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- Physics & Mathematics (AREA)
- Geometry (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006546246A JP4571647B2 (ja) | 2003-12-24 | 2004-12-22 | 内燃機関の排気ガス中に存在する微粒子をろ過するためのブロック |
DE602004031682T DE602004031682D1 (de) | 2003-12-24 | 2004-12-22 | Block zum filtern von in abgasen eines verbrennungsmotors enthaltenen teilchen |
EP04816467A EP2101982B1 (fr) | 2003-12-24 | 2004-12-22 | Bloc pour la filtration de particules contenues dans les gaz d' echappement d un moteur a combustion interne |
US10/583,941 US7905939B2 (en) | 2003-12-24 | 2004-12-22 | Block for filtering particles contained in exhaust gases of an internal combustion engine |
PL04816467T PL2101982T3 (pl) | 2003-12-24 | 2004-12-22 | Blok do filtrowania cząstek zawartych w gazach spalinowych z silnika spalinowego |
AT04816467T ATE499979T1 (de) | 2003-12-24 | 2004-12-22 | Block zum filtern von in abgasen eines verbrennungsmotors enthaltenen teilchen |
DK04816467.7T DK2101982T3 (da) | 2003-12-24 | 2004-12-22 | Blok til filtrering af i en forbrændingsmotors udstødningsgasser indeholdte partikler |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0315390A FR2864576B1 (fr) | 2003-12-24 | 2003-12-24 | Bloc pour la filtration de particules contenues dans les gaz d'echappement d'un moteur a combustion interne |
FR0315390 | 2003-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005063462A1 true WO2005063462A1 (fr) | 2005-07-14 |
Family
ID=34639601
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2004/003339 WO2005063462A1 (fr) | 2003-12-24 | 2004-12-22 | Bloc pour la filtration de particules contenues dans les gaz d'echappement d'un moteur a combustion interne |
Country Status (11)
Country | Link |
---|---|
US (1) | US7905939B2 (fr) |
EP (1) | EP2101982B1 (fr) |
JP (1) | JP4571647B2 (fr) |
CN (1) | CN100581787C (fr) |
AT (1) | ATE499979T1 (fr) |
DE (1) | DE602004031682D1 (fr) |
DK (1) | DK2101982T3 (fr) |
ES (1) | ES2361840T3 (fr) |
FR (1) | FR2864576B1 (fr) |
PL (1) | PL2101982T3 (fr) |
WO (1) | WO2005063462A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2896823A1 (fr) | 2006-01-31 | 2007-08-03 | Saint Gobain Ct Recherches | Filtre catalytique presentant un temps d'amorcage reduit |
JP2010504853A (ja) * | 2006-09-27 | 2010-02-18 | サン−ゴバン サントル ドゥ ルシェルシェ エ デトゥードゥ ユーロペン | 粒子フィルタ用コーナー強化モノリシック部材 |
WO2010149908A1 (fr) | 2009-06-22 | 2010-12-29 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Structure de filtration d'un gaz a canaux hexagonaux irregulier |
WO2011004351A1 (fr) | 2009-07-09 | 2011-01-13 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Structure en nid d'abeille marquée |
EP2468382A1 (fr) | 2010-12-23 | 2012-06-27 | Saint-Gobain Centre de Recherches et d'Etudes Européen | Filtre a particules du type assemble |
WO2013038103A1 (fr) | 2011-09-14 | 2013-03-21 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Élément en nid d'abeille a coins renforces |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009008297A1 (de) * | 2009-02-10 | 2010-08-12 | Mann + Hummel Gmbh | Keramisches Filterelement mit Strukturelementen und Verfahren zur Hertellung |
JP4890903B2 (ja) * | 2006-03-28 | 2012-03-07 | 日本碍子株式会社 | ハニカム構造体 |
DE202007003597U1 (de) * | 2007-03-08 | 2008-07-17 | Mann+Hummel Gmbh | Vorrichtung zur Abgasnachbehandlung |
JP5261527B2 (ja) * | 2011-03-31 | 2013-08-14 | 日本碍子株式会社 | 目封止ハニカム構造体 |
JP5580241B2 (ja) * | 2011-03-31 | 2014-08-27 | 日本碍子株式会社 | 目封止ハニカム構造体 |
JP5261526B2 (ja) * | 2011-03-31 | 2013-08-14 | 日本碍子株式会社 | 目封止ハニカム構造体 |
JP6451615B2 (ja) * | 2015-01-09 | 2019-01-16 | 株式会社デンソー | 排ガスフィルタ |
JP6847724B2 (ja) * | 2017-03-21 | 2021-03-24 | 日本碍子株式会社 | 目封止ハニカム構造体 |
JP7057691B2 (ja) * | 2018-03-19 | 2022-04-20 | 日本碍子株式会社 | ハニカム構造体 |
US11839995B2 (en) * | 2018-05-31 | 2023-12-12 | Corning Incorporated | Honeycomb bodies with honeycomb structure strengthening features and extrusion dies therefor |
CN114669084B (zh) * | 2022-03-17 | 2023-06-06 | 山东渤泰能源科技有限公司 | 一种矿物涡轮机油脱水装置及其脱水系统 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4276071A (en) * | 1979-12-03 | 1981-06-30 | General Motors Corporation | Ceramic filters for diesel exhaust particulates |
FR2698316A1 (fr) * | 1992-11-20 | 1994-05-27 | Ngk Insulators Ltd | Elément à structure en nid d'abeille courbe. |
EP0867222A2 (fr) * | 1997-03-28 | 1998-09-30 | Ngk Insulators, Ltd. | Structure céramique en nid d'abeilles avec différentes épaisseurs de parois |
EP1125704A1 (fr) | 1999-08-30 | 2001-08-22 | Ngk Insulators, Ltd. | Structure en nid d'abeille de paroi ondulee et procede de production de celle-ci |
WO2002089979A2 (fr) * | 2001-05-02 | 2002-11-14 | Ngk Insulators, Ltd. | Corps structural alveolaire, filtre alveolaire et systeme de convertisseur dans lequel ledit corps structural alveolaire est utilise |
FR2829038A1 (fr) * | 2001-08-28 | 2003-03-07 | Denso Corp | Filtre epurateur de gaz d'echappement et procede de fabrication pour celui-ci |
US7037567B2 (en) | 2001-06-29 | 2006-05-02 | Ngk Insulators, Ltd. | Honeycomb structure |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54110189A (en) * | 1978-02-17 | 1979-08-29 | Ngk Insulators Ltd | Ceramic honeycomb structure |
JPS5781127U (fr) * | 1980-11-05 | 1982-05-19 | ||
WO1998005602A1 (fr) * | 1996-08-07 | 1998-02-12 | Denso Corporation | Ceramique nid d'abeille et procede de fabrication |
ES2321331T3 (es) * | 1999-09-29 | 2009-06-04 | Ibiden Co., Ltd. | Filtro de nido de abeja y conjunto de filtros ceramicos. |
DE10026442A1 (de) * | 2000-05-29 | 2001-12-13 | Augustinus Bader | Verfahren zur Herstellung eines empfängerspezifischen Gewebe-Transplantats |
US6508852B1 (en) * | 2000-10-13 | 2003-01-21 | Corning Incorporated | Honeycomb particulate filters |
JP2002292225A (ja) | 2001-03-30 | 2002-10-08 | Ngk Insulators Ltd | ハニカム構造体及びそのアッセンブリ |
US20030041730A1 (en) * | 2001-08-30 | 2003-03-06 | Beall Douglas M. | Honeycomb with varying channel size |
JP4246425B2 (ja) | 2001-10-15 | 2009-04-02 | 日本碍子株式会社 | ハニカムフィルター |
USD523543S1 (en) * | 2002-06-28 | 2006-06-20 | Ibiden Co., Ltd. | Particulate filter for diesel engine |
JPWO2004024294A1 (ja) * | 2002-09-13 | 2006-01-05 | イビデン株式会社 | フィルタ |
FR2864575B1 (fr) * | 2003-12-24 | 2006-02-10 | Saint Gobain Ct Recherches | Bloc pour la filtration de particules contenues dans les gaz d'echappement d'un moteur a combustion interne |
-
2003
- 2003-12-24 FR FR0315390A patent/FR2864576B1/fr not_active Expired - Fee Related
-
2004
- 2004-12-22 EP EP04816467A patent/EP2101982B1/fr not_active Expired - Lifetime
- 2004-12-22 DK DK04816467.7T patent/DK2101982T3/da active
- 2004-12-22 DE DE602004031682T patent/DE602004031682D1/de not_active Expired - Lifetime
- 2004-12-22 JP JP2006546246A patent/JP4571647B2/ja not_active Expired - Fee Related
- 2004-12-22 ES ES04816467T patent/ES2361840T3/es not_active Expired - Lifetime
- 2004-12-22 WO PCT/FR2004/003339 patent/WO2005063462A1/fr active Application Filing
- 2004-12-22 AT AT04816467T patent/ATE499979T1/de not_active IP Right Cessation
- 2004-12-22 CN CN200480038644A patent/CN100581787C/zh not_active Expired - Fee Related
- 2004-12-22 US US10/583,941 patent/US7905939B2/en not_active Expired - Fee Related
- 2004-12-22 PL PL04816467T patent/PL2101982T3/pl unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4276071A (en) * | 1979-12-03 | 1981-06-30 | General Motors Corporation | Ceramic filters for diesel exhaust particulates |
FR2698316A1 (fr) * | 1992-11-20 | 1994-05-27 | Ngk Insulators Ltd | Elément à structure en nid d'abeille courbe. |
EP0867222A2 (fr) * | 1997-03-28 | 1998-09-30 | Ngk Insulators, Ltd. | Structure céramique en nid d'abeilles avec différentes épaisseurs de parois |
EP1125704A1 (fr) | 1999-08-30 | 2001-08-22 | Ngk Insulators, Ltd. | Structure en nid d'abeille de paroi ondulee et procede de production de celle-ci |
WO2002089979A2 (fr) * | 2001-05-02 | 2002-11-14 | Ngk Insulators, Ltd. | Corps structural alveolaire, filtre alveolaire et systeme de convertisseur dans lequel ledit corps structural alveolaire est utilise |
US7037567B2 (en) | 2001-06-29 | 2006-05-02 | Ngk Insulators, Ltd. | Honeycomb structure |
FR2829038A1 (fr) * | 2001-08-28 | 2003-03-07 | Denso Corp | Filtre epurateur de gaz d'echappement et procede de fabrication pour celui-ci |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2896823A1 (fr) | 2006-01-31 | 2007-08-03 | Saint Gobain Ct Recherches | Filtre catalytique presentant un temps d'amorcage reduit |
JP2010504853A (ja) * | 2006-09-27 | 2010-02-18 | サン−ゴバン サントル ドゥ ルシェルシェ エ デトゥードゥ ユーロペン | 粒子フィルタ用コーナー強化モノリシック部材 |
WO2010149908A1 (fr) | 2009-06-22 | 2010-12-29 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Structure de filtration d'un gaz a canaux hexagonaux irregulier |
WO2011004351A1 (fr) | 2009-07-09 | 2011-01-13 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Structure en nid d'abeille marquée |
EP2468382A1 (fr) | 2010-12-23 | 2012-06-27 | Saint-Gobain Centre de Recherches et d'Etudes Européen | Filtre a particules du type assemble |
WO2013038103A1 (fr) | 2011-09-14 | 2013-03-21 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Élément en nid d'abeille a coins renforces |
US9546115B2 (en) | 2011-09-14 | 2017-01-17 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Honeycomb element with reinforced corners |
Also Published As
Publication number | Publication date |
---|---|
FR2864576A1 (fr) | 2005-07-01 |
US20070144127A1 (en) | 2007-06-28 |
ATE499979T1 (de) | 2011-03-15 |
EP2101982B1 (fr) | 2011-03-02 |
CN1910030A (zh) | 2007-02-07 |
DE602004031682D1 (de) | 2011-04-14 |
JP2007524030A (ja) | 2007-08-23 |
CN100581787C (zh) | 2010-01-20 |
ES2361840T3 (es) | 2011-06-22 |
FR2864576B1 (fr) | 2006-03-03 |
US7905939B2 (en) | 2011-03-15 |
EP2101982A1 (fr) | 2009-09-23 |
DK2101982T3 (da) | 2011-06-20 |
JP4571647B2 (ja) | 2010-10-27 |
PL2101982T3 (pl) | 2011-08-31 |
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