WO2006126507A1 - ハニカム構造体 - Google Patents
ハニカム構造体 Download PDFInfo
- Publication number
- WO2006126507A1 WO2006126507A1 PCT/JP2006/310189 JP2006310189W WO2006126507A1 WO 2006126507 A1 WO2006126507 A1 WO 2006126507A1 JP 2006310189 W JP2006310189 W JP 2006310189W WO 2006126507 A1 WO2006126507 A1 WO 2006126507A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cam
- material layer
- segment
- bonding material
- thickness
- Prior art date
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- 239000000463 material Substances 0.000 claims abstract description 73
- 230000002093 peripheral effect Effects 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims description 4
- 239000010410 layer Substances 0.000 abstract description 75
- 230000008646 thermal stress Effects 0.000 abstract description 15
- 230000007547 defect Effects 0.000 abstract description 7
- 239000011247 coating layer Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract 2
- 238000011084 recovery Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 description 14
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- 230000008021 deposition Effects 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 11
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 11
- 229910010271 silicon carbide Inorganic materials 0.000 description 11
- 238000010304 firing Methods 0.000 description 10
- 229910052878 cordierite Inorganic materials 0.000 description 8
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 239000004071 soot Substances 0.000 description 5
- 239000004927 clay Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005304 joining Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052863 mullite Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910000505 Al2TiO5 Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
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- 229910010272 inorganic material Inorganic materials 0.000 description 2
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- 230000000116 mitigating effect Effects 0.000 description 2
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- 239000002245 particle Substances 0.000 description 2
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- SBEQWOXEGHQIMW-UHFFFAOYSA-N silicon Chemical compound [Si].[Si] SBEQWOXEGHQIMW-UHFFFAOYSA-N 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229910000166 zirconium phosphate Inorganic materials 0.000 description 1
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 description 1
- -1 zircoure Chemical compound 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
-
- 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
-
- 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
- B01D46/2425—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
- B01D46/2429—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material of the honeycomb walls or cells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
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- 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
- B01D46/2425—Honeycomb filters characterized by parameters related to the physical properties of the honeycomb structure material
- B01D46/24494—Thermal expansion coefficient, heat capacity or thermal conductivity
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- 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
- B01D46/2455—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the whole honeycomb or segments
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- 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
- B01D46/2466—Honeycomb filters characterized by the geometrical structure, shape, pattern or configuration or parameters related to the geometry of the structure of the adhesive layers, i.e. joints between segments
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- B01D46/2478—Structures comprising honeycomb segments
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- 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
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
- B01D46/249—Quadrangular e.g. square or diamond
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
- B01D46/2496—Circular
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0006—Honeycomb structures
- C04B38/0016—Honeycomb structures assembled from subunits
- C04B38/0019—Honeycomb structures assembled from subunits characterised by the material used for joining separate subunits
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00793—Uses not provided for elsewhere in C04B2111/00 as filters or diaphragms
-
- 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
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24149—Honeycomb-like
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24149—Honeycomb-like
- Y10T428/24157—Filled honeycomb cells [e.g., solid substance in cavities, etc.]
Definitions
- the present invention relates to a no-cam structure in which a plurality of her cam segments are integrally joined by a joining material layer. More specifically, in detail, a collection filter for exhaust gas, especially a diesel particulate filter that collects particulate matter (particulate) (hereinafter sometimes referred to as “PM”) in exhaust gas from diesel engines ( This is a hard cam structure that is useful as a (DPF) and can effectively prevent the occurrence of defects such as cracks due to thermal stress by reducing the effects of thermal stress generated during use and regeneration. .
- PM particulate matter
- a diesel particulate filter is used as a diesel particulate filter (DPF) to capture and remove PM contained in exhaust gas from a power source such as a diesel engine.
- a power source such as a diesel engine.
- PM diesel particulate filter
- DPF diesel particulate filter
- Such a hard cam structure is used when PM is trapped and removed during use (when PM is trapped and removed) and when it is regenerated (PM is deposited inside the filter to eliminate the increase in pressure loss due to PM accumulated over time). Due to thermal stress generated due to differences in the location of thermal expansion, where the temperature rise is likely to be uneven depending on the location. If there is a defect such as
- the hard cam structure made of silicon carbide (SiC) as one of the raw materials is excellent in heat resistance, but has a larger thermal expansion coefficient than the cordierite non-nickum structure.
- SiC silicon carbide
- the hard cam structure intended to reduce the influence of thermal stress and the at least one force of the hard cam segment that does not constitute the outermost peripheral surface of the hammer structure constitute the outermost peripheral surface.
- a hard cam structure having an average wall thickness larger than at least one of the hard cam segments and a cell density being smaller or equal see Patent Document 1, outer periphery side of the hard cam segment Heat capacity force per unit volume in the part
- the heart cam structure including the heart cam segment larger than the heat capacity per unit volume in the center part of the heart cam segment see Patent Document 2), and the shaft of the nonicam filter
- a Harcam filter see Patent Document 3 in which the heat capacity at the center is higher than the heat capacity at the periphery has been proposed, but the honeycomb structure is accompanied by local and sudden heat generation.
- Patent Document 1 JP 2002-301325 A
- Patent Document 2 Japanese Patent Laid-Open No. 2003-10616
- Patent Document 3 Japanese Patent Laid-Open No. 2003-254034
- the present invention has been made in view of the above-described problems, and is useful as a collection filter for exhaust gas, and particularly as a diesel particulate filter (DPF) for collecting PM or the like in exhaust gas from a diesel engine.
- Another object of the present invention is to provide a honeycomb structure capable of effectively preventing the occurrence of defects such as cracks due to thermal stress by mitigating the influence of thermal stress generated during use and regeneration. .
- a nose-cam segment assembly in which a plurality of her cam segments are integrally bonded to each other via a bonding material layer, and an outer peripheral surface of the her cam segment assembly.
- a hard cam structure having a structure in which a plurality of cells serving as fluid flow paths are arranged in parallel with each other in the central axis direction, The average thickness (T1) at the locations located at both ends in the central axis direction of the honeycomb segment and the forces at both ends of the hard cam segment are 3 to 40% of the total length.
- the present invention is useful as a collection filter for exhaust gas, particularly a diesel particulate filter (DPF) that collects PM or the like in exhaust gas from a diesel engine.
- DPF diesel particulate filter
- a hard cam structure that can alleviate the influence of thermal stress that is sometimes generated and effectively prevent the occurrence of defects such as cracks due to thermal stress.
- Fig. 1 is a perspective view schematically showing an embodiment of a honeycomb structure of the present invention (the entire cross-sectional shape cut by a plane perpendicular to the central axis is circular).
- Fig. 2 is a front view of a part of another embodiment of the honeycomb structure of the present invention (when the entire cross-sectional shape cut by a plane perpendicular to the central axis is a square) and viewed from the end face side force.
- FIG. 3 is a perspective view schematically showing a heart cam segment used in another embodiment of the heart cam structure of the present invention.
- FIG. 4 is a cross-sectional view taken along line AA in FIG.
- FIG. 5 is an explanatory view schematically showing the thickness of a bonding material layer in Example 1.
- FIG. 6 is an explanatory view schematically showing the thickness of a bonding material layer in Example 2.
- FIG. 7 is an explanatory view schematically showing the thickness of a bonding material layer in Example 3.
- FIG. 8 is an explanatory view schematically showing the thickness of a bonding material layer in Example 4.
- FIG. 9 is an explanatory view schematically showing a portion having a high probability that the temperature rise is greatest during use and during regeneration.
- FIG. 10 is an explanatory view schematically showing the overall shape of the her cam structure in the example.
- FIG. 11 is an explanatory view schematically showing the thickness of the bonding material layer in Comparative Example 1.
- FIG. 12 is an explanatory view schematically showing the thickness of a bonding material layer in Comparative Example 2.
- FIG. 13 is a graph schematically showing the relationship between [2) 7 1)] (times) and the limit PM deposition amount (gZL) and pressure loss (kPa) at which cracks do not occur.
- FIG. 14 is an explanatory view schematically showing the thickness of a bonding material layer in Example 5.
- FIG. 15 is an explanatory view schematically showing the thickness of a bonding material layer in Example 6.
- FIG. 16 is an explanatory view schematically showing the thickness of a bonding material layer in Example 7.
- FIG. 17 is an explanatory view schematically showing the thickness of a bonding material layer in Example 8.
- FIG. 18 is an explanatory view schematically showing the thickness of a bonding material layer in Comparative Example 3.
- FIG. 19 is an explanatory view schematically showing the thickness of a bonding material layer in Comparative Example 4.
- FIG. 21 (a) and (b) are explanatory views for explaining an embodiment of a method for forming a recess having a predetermined width in the side surface portion of the her cam segment.
- FIG. 22 is an explanatory diagram for explaining another embodiment of a method for forming a depression having a predetermined width in a side surface portion of a honeycomb segment.
- FIG. 23 is an explanatory view schematically showing another shape of the bonding material layer in the her cam structure of the present invention.
- FIG. 24 is an explanatory view schematically showing still another shape of the bonding material layer in the her cam structure of the present invention.
- FIG. 25 is an explanatory view schematically showing still another shape of the bonding material layer in the her cam structure of the present invention.
- Cam segment, 102 Roller or cutting drill, 104: Depression, 106: Formwork, 108: Projection.
- the her cam structure 1 includes a plurality of her cam segments 2 that are integrally formed with each other through a bonding material layer 9.
- the joined no-cam segment assembly 10 and the outer coat layer 4 covering the outer peripheral surface of the her cam segment assembly 10, and a plurality of cells 5 serving as fluid flow paths are arranged in the central axis direction.
- a hard cam structure 1 having a structure arranged so as to be parallel to each other, as shown in FIGS. 5 to 8, the thickness force of the bonding material layer 9
- the average thickness (T1) at the locations (XI) and (X2) located in the section and the forces at both ends of the her cam segment 2 are also separated by 3 to 40% of the total length (Yl) and () 2).
- the average thickness (T1) is a value obtained by measuring two or more different thicknesses of the bonding material layer 9 appearing at both ends in the central axis direction of the her cam segment 2.
- the maximum thickness ( ⁇ 2) means any point perpendicular to the central axis direction of the two-cam segment 2 at the location corresponding to [(Y1) to ( ⁇ 2)] of the bonding material layer 9. It means the maximum thickness among the thicknesses of the bonding material layer 9 that appears when cut in a plane.
- the force at both ends of the her cam segment 2 is also the maximum of the bonding material layer up to the points (Yl) and ( ⁇ 2) separated by 3 to 40% (preferably 10 to 20%) of the total length. It is configured to have a thickness ( ⁇ 2). This is because the exhaust gas flow is likely to gather in the center, and the outer periphery is easily affected by heat dissipation. This is because the effect of the thermal stress generated by this temperature rise is mitigated by the bonding material layer, and the generation of defects such as cracks due to the thermal stress is effectively prevented. In this sense, the bonding material layer is configured to have a function of mitigating the influence of thermal stress.
- the structure of the honeycomb structure 1 in the embodiment of the present invention will be described more specifically.
- the Hercam structure 1 according to the embodiment of the present invention includes a plurality of cells 5 that are divided and formed by porous partition walls 6 and serve as fluid flow paths.
- the structure is arranged in parallel, each has a shape that forms part of the entire structure, and the entire structure is assembled by being assembled in a direction perpendicular to the central axis of the honeycomb structure 1.
- a plurality of her cam segments 2 having a shape that constitutes a hermetic segment joined together by a joining material layer 9 and an outer peripheral surface of the hermetic segment joined body 10
- the outer peripheral coat layer 4 to be coated is provided.
- the overall cross-sectional shape cut in a plane perpendicular to the central axis of the two-cam structure 1 is circular, elliptical, racetrack shaped or They are ground so that they are partially deformed, and the outer peripheral surface is covered with the outer peripheral coat layer 4.
- PM including exhaust soot discharged from the diesel engine can be captured by arranging it in the exhaust system of the diesel engine.
- FIG. 1 the cell 5 and the partition wall 6 are shown only in one hack segment 2.
- each her cam segment 2 has a shape that constitutes a part of the overall structure of the her cam structure 1 (her cam segment assembly 10) (see FIG. 1).
- the cells 5 are arranged so as to be parallel to each other in the direction of the central axis of the her cam structure 1, and the respective ends of the adjacent cells 5 are alternately sealed with the filler 7. Yes.
- the left end side in Figs. 3 and 4 is open, while the right end side is sealed with the filler 7, and another cell 5 adjacent thereto is sealed.
- the left end side is sealed by the filler 7, but the right end side is open.
- the end face of the hard cam segment 2 has a pinecone pattern.
- the exhaust gas opens without being sealed, and the cell 5 (inflow cell) force is also Her cam. It flows into segment 2.
- the exhaust gas flowing into the cell 5 (inflow cell) passes through the porous partition wall 6 and flows out from the other cell 5 (outflow cell).
- PM containing soot in the exhaust gas is captured by the partition 6 when passing through the partition 6. In this way, exhaust gas purification can be performed.
- PM containing soot accumulates with time in the inside of the hard cam segment 2 and the pressure loss increases, so regeneration that burns soot and the like is performed.
- a force square indicating a square segment 2 whose cross-sectional shape as a whole is a square, or a partially deformed shape, a triangle, a hexagon, etc. Good.
- the cross-sectional shape of the cell 5 may also be a polygon, circle, ellipse, racetrack shape, or a shape obtained by partially deforming them! /.
- the material of the hard cam segment 2 is silicon carbide, silicon carbide composite material, silicon nitride, cordierite, mullite, alumina, spinel, silicon carbide cordierite composite material, It is preferable to use at least one selected from silicon-silicon carbide composite material, lithium aluminum silicate, aluminum titanate, and a group force that also includes Fe Cr—A1-based metal force. Of these, silicon carbide or silicon-silicon carbide based composite material is preferable.
- Hercome segment 2 for example, methenoresenorelose, hydroxypropoxynoresenorelose, hydroxyethenoresenorelose, force noroxymethylcellulose, polybule can be selected as appropriate from the above-mentioned materials.
- a binder such as alcohol, a surfactant, water as a solvent is added to form a plastic clay, and the clay is extruded to have the shape described above, and then microwave, hot air, etc. After drying, it can be performed by sintering.
- ha - thermal expansion coefficient of the cam segment 2 it is further preferably on 1 X 10- 6 / ° C or less is preferred instrument 2 X 10- 6 Z ° C or more. Below 1 X 10 "V ° C, the need for a stress relaxation function in the bonding material layer may be significantly reduced.
- filler 7 used for plugging the cells 5 the same material as that of the her cam segment 2 can be used. Sealing with filler 7 does not seal, but masks cell 5 Then, by filling the open cell 5 by immersing the end face of the her cam segment 2 in the slurry-like filler 7, it can be carried out. Filler 7 may be filled before firing or after firing after forming Hermum segment 2, but the firing process is completed in one time when firing is performed before firing. preferable.
- a slurry-like bonding material layer 9 is applied to the outer peripheral surface of the hard cam segment 2, and a predetermined three-dimensional shape (the overall structure of the honeycomb structure 1) is applied.
- a joined body in which a plurality of her cam segments 2 are joined together is produced.
- the joined body is ground into the above-described shape, and the outer peripheral surface is covered with the outer peripheral coat layer 4 and is heat-dried. In this way, the Hercam structure 1 shown in FIG. 1 is produced.
- the bonding material layer 9 used in the present invention is applied to the outer peripheral surface of the honeycomb segment 2 and functions to bond the honeycomb segment 2 and relieve thermal stress.
- the bonding material layer 9 may be applied to the outer peripheral surface of each adjacent cam segment 2, but between the adjacent her cam segments 2, the corresponding outer peripheral surface is applied to one of the corresponding outer peripheral surfaces. You can just go there.
- the thickness of the bonding material layer 9 is determined in consideration of the bonding force between the her cam segments 2, and is appropriately selected, for example, in the range of 0.2 to 4. Omm.
- the bonding material layer 9 used in the present invention preferably contains a ceramic as a main component and a granular filler.
- the same material can be used for the bonding material layer 9 and the outer peripheral coat layer 4.
- examples of the ceramic contained as a main component in the bonding material layer 9 and the outer peripheral coat layer 4 include ceramics such as silicon carbide, silicon nitride, cordierite, alumina, and mullite.
- a colloidal sol such as colloidal silica or colloidal alumina, or a metal fiber or a pore former as necessary may be blended.
- the outer peripheral coat layer 4 is applied to the outer peripheral surface of the joint of the her cam segment 2 and functions to protect the outer peripheral surface of the joint of the her cam segment 2.
- the thickness of the outer peripheral coat layer 4 is For example, it is appropriately selected within the range of 0.1 to 1.5 mm.
- Examples of the particulate filler contained in the bonding material layer 9 and the outer peripheral coat layer 4 include those made of an inorganic material or an organic material.
- Specific examples of the inorganic material include glass beads and fly ash balloons, and specific examples of the organic material include starch and foamed resin.
- the granular filler preferably has an average diameter of 10 to 300 ⁇ m, and an average of 15 to 250 ⁇ m is more preferable, and an average of 20 to 200 ⁇ m is particularly preferable.
- the granular filler is more preferably a true sphere with a long center axis Z-short center axis ratio in the range of 1.0 to 4.0.
- FILLER one particulate, the bonding material layer 9 and the outer peripheral coating layer 4 is preferably contained in a proportion of 20 to 70 volume 0/0. More preferred is 25 to 65% by volume, and particularly preferred is 30 to 60% by volume.
- the granular filler preferably has a hollow structure.
- the bonding material layer 9 and the outer peripheral coat layer 4 are cured to reduce the density of the joint and the outer peripheral surface, thereby reducing the Young's modulus. Become. Thereby, the thermal shock resistance of the joint and the outer peripheral surface is improved, and the occurrence of cracks during use can be suppressed.
- the bonding material layer 9 and the outer peripheral coat layer 4 include at least one selected from the group consisting of inorganic particles, oxide fibers, and colloidal oxides in addition to the ceramics and the particulate filler described above. You may further contain in the ratio of the mass%. By containing these, the characteristics as the bonding material layer 9 and the outer peripheral coating layer 4 can be improved.
- the inorganic particles include silicon carbide, silicon nitride, cordierite, alumina, mullite, zircoure, zirconium phosphate, aluminum titanate, and titaker, at least one kind of ceramics; Fe Cr A1-based metal; Nickel metal; metal Si; SiC and the like.
- oxide fibers include aluminosilicate fibers and other fibers.
- colloidal oxides include silica sol and alumina sol.
- the thermal conductivity of the bonding material layer 9 and the outer peripheral coating layer 4 is preferably 0.1 to 5.
- OWZm'k since the crack by impact or the like is prevented from occur, relatively low it is preferred instrument 1 X 10- 6 ⁇ 8 X 10- 6 / range of ° C It is preferable that it is a surrounding.
- a recess 104 is formed in the honeycomb segment 100 before or after firing using a roller or a cutting drill 102.
- a mold 106 for preparing a depression at the time of firing is prepared.
- the mold 106 is provided with a projecting portion 108 at the center for forming a desired depression 104 in the side surface of the her cam segment 100 during firing. Then, by placing the unfired hard cam segment 100 on the projecting portion 108 of the mold 106 and firing, the fired hard cam segment can be shaped to have a predetermined depression. it can.
- a bonding material was applied to each side surface to prepare a her cam segment assembly, and then this her cam segment assembly was cut.
- the outer periphery coating material By applying the outer periphery coating material, a her cam structure as shown in FIG. 10 is produced.
- the central bonding material layer 9b where the bonding material layer 9a in the vicinity is thin is a convex lens type shape that thickens by force toward the center, and the thin bonding in the vicinity of one end of the bonding material layers at both ends as shown in FIG.
- the material layer 9a is long and the thin bonding material layer 9a in the vicinity of the other end is formed short, and the central bonding material layer 9b is a convex lens type.
- one of the hard cam segments 2a is not formed with a recess, and the other her cam segment 2b is warped as a whole, and the recess side of the hard cam segment 2b It is possible to fabricate a Hercam structure by joining the layers so as to form the bonding material layer 9.
- predetermined recesses were formed on the side surface using a roller by the method shown in FIGS. 21 (a) and 21 (b). These hard cam segments were calcined for 3 hours at 550 ° C in an acid atmosphere and then calcined for 2 hours at a firing temperature of 1400 ° C in a non-acid atmosphere. Thereafter, a slurry-like bonding material was applied, bonded, dried and cured, and a Hercam segment bonded body was produced. After cutting this Hercam segment assembly, a slurry-like outer periphery coating material was applied to form an outer periphery coating layer. As shown in FIG.
- a porous Herkam with a diameter of 143.8 mm and a length of 254 mm was obtained.
- a silicon carbide sintered body having a structure (her cam structure) was produced.
- the average thickness (T1) of the bonding material layer is 1 mm
- the maximum thickness between the points separated by 9.8% of the total force at both ends of the her cam segment ( T2) was set to 1.3 mm (1.3 times the average thickness (T1)).
- Example 6 to 8 and 10 As shown in L 1, in Example 1, the maximum thickness (T 2) of the bonding material layer is 2 times, 5 times, 10 times the average thickness (T1), 1. The procedure was the same as Example 1 except that the magnification was changed to 0 times or 11 times. Table 1 summarizes the values of average thickness (T1), maximum thickness (T2), and ( ⁇ 2) ⁇ ( ⁇ 1).
- the engine deposits soot on the no-cam structure, then raises the exhaust gas temperature to about 650 ° C, and PM burns rapidly, causing thermal shock to the no-cam structure and removing the PM. Then, 10m 3 Zmin, air at 25 ° C is allowed to flow, and the thickness of the bonding material layer [ 2)
- Z (T1)] times
- the limit PM deposition amount (gZL) and pressure loss (in which cracks do not occur) kPa) was measured.
- the limit PM deposition amount at which cracks do not occur is 8 (gZL) and the pressure loss is 4 (kPa).
- the limit PM deposit is 10 (gZL) and the pressure loss is 4 (kPa) .
- the limit PM deposit is 11 (gZL) and no pressure is generated.
- the loss is 4.5 (kPa).
- the limit PM deposition amount at which cracks do not occur is 12 (gZL), and the pressure loss is 7 (kPa).
- the limit PM crack amount is 6 (gZL), the pressure loss is 4 (kPa), and in the case of Comparative Example 2 (11 times), the limit is not cracked.
- the amount of PM deposited was 12.2 (gZL), and the pressure loss was 9 (kPa).
- the measurement point of the maximum thickness (T2) (distance from the end of the nodular cam segment) is determined from both ends of the her cam segment. Points separated by 3.9% (10mm), 9.8% (25mm), 19% (50mm), 39% (100mm), 2.0% (5mm), 43% (110mm) of the total length, respectively.
- Table 1 summarizes the measurement points for the maximum thickness (T2).
- Examples 5 to 8 and Comparative Example 3 show the ratio (%) from the end face to the (T2) part (enlarged part including the maximum thickness (T2)) and the distance (mm) from the end face to the (T2) part.
- Example 5 As a result, in the case of Example 5 (3.9% (10mm)), the limit PM deposition amount at which cracks do not occur is 9 (g / L, and in Example 6 (9.8% (25mm)) The limit PM deposition amount at which cracks do not occur is 10 (g ZL) .
- Example 7 (19% (50 mm)
- the limit PM deposition amount at which cracks do not occur is 9.5 (g / L).
- Example 8 (39% (100mm)
- the limit PM deposition amount where cracks do not occur is 7 (gZL)
- Comparative Example 3 (2.0% (5mm)
- the limit PM deposition amount was 7 (g / L).
- Comparative Example 4 (43% (110 mm)
- Table 1 and Figure 20 The above is summarized in Table 1 and Figure 20.
- the her cam structure of the present invention is a diesel particulate filter (DPF) for capturing and removing PM contained in exhaust gas from a diesel engine, for example, as a collection filter for exhaust gas. ) Is useful.
- DPF diesel particulate filter
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
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- Structural Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
Description
Claims
Priority Applications (3)
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EP06746723.3A EP1884275B1 (en) | 2005-05-23 | 2006-05-23 | Honeycomb structure body |
JP2007517824A JP5252916B2 (ja) | 2005-05-23 | 2006-05-23 | ハニカム構造体 |
US11/898,596 US7658985B2 (en) | 2005-05-23 | 2007-09-13 | Honeycomb structure |
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US11/898,596 Continuation US7658985B2 (en) | 2005-05-23 | 2007-09-13 | Honeycomb structure |
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PCT/JP2006/310189 WO2006126507A1 (ja) | 2005-05-23 | 2006-05-23 | ハニカム構造体 |
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US (1) | US7658985B2 (ja) |
EP (1) | EP1884275B1 (ja) |
JP (1) | JP5252916B2 (ja) |
KR (1) | KR100893514B1 (ja) |
WO (1) | WO2006126507A1 (ja) |
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WO2008096503A1 (ja) * | 2007-02-02 | 2008-08-14 | Ngk Insulators, Ltd. | ハニカム構造体 |
WO2008117610A1 (ja) * | 2007-03-27 | 2008-10-02 | Ngk Insulators, Ltd. | ハニカムセグメント及びそれを用いたハニカム構造体 |
WO2009118813A1 (ja) * | 2008-03-24 | 2009-10-01 | イビデン株式会社 | ハニカム構造体及びハニカム構造体の製造方法 |
JP2010101282A (ja) * | 2008-10-27 | 2010-05-06 | Ngk Insulators Ltd | 目封止ハニカム構造体及びその製造方法 |
JP2010126379A (ja) * | 2008-11-26 | 2010-06-10 | Tokyo Yogyo Co Ltd | ハニカム構造体 |
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JP5318620B2 (ja) | 2009-03-19 | 2013-10-16 | 日本碍子株式会社 | ハニカム構造体 |
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JPWO2006126507A1 (ja) | 2008-12-25 |
KR100893514B1 (ko) | 2009-04-16 |
JP5252916B2 (ja) | 2013-07-31 |
EP1884275A1 (en) | 2008-02-06 |
US7658985B2 (en) | 2010-02-09 |
EP1884275A4 (en) | 2010-08-11 |
US20080014405A1 (en) | 2008-01-17 |
KR20070121797A (ko) | 2007-12-27 |
EP1884275B1 (en) | 2014-07-23 |
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