GB2071640A - Ceramic honeycomb body - Google Patents
Ceramic honeycomb body Download PDFInfo
- Publication number
- GB2071640A GB2071640A GB8107974A GB8107974A GB2071640A GB 2071640 A GB2071640 A GB 2071640A GB 8107974 A GB8107974 A GB 8107974A GB 8107974 A GB8107974 A GB 8107974A GB 2071640 A GB2071640 A GB 2071640A
- Authority
- GB
- United Kingdom
- Prior art keywords
- honeycomb body
- channels
- filled
- ceramic honeycomb
- reinforcing material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 26
- 239000012779 reinforcing material Substances 0.000 claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 239000004568 cement Substances 0.000 claims description 9
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 229910010293 ceramic material Inorganic materials 0.000 claims description 8
- 229910052878 cordierite Inorganic materials 0.000 claims description 7
- 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 claims description 7
- 239000011819 refractory material Substances 0.000 claims description 4
- 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 claims description 2
- 229910052863 mullite Inorganic materials 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 abstract description 3
- 238000011049 filling Methods 0.000 description 15
- 239000000463 material Substances 0.000 description 11
- 238000007906 compression Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 235000011837 pasties Nutrition 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011226 reinforced ceramic Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- 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
- B01D46/2407—Filter candles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2825—Ceramics
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2330/00—Structure of catalyst support or particle filter
- F01N2330/06—Ceramic, e.g. monoliths
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Geometry (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Catalysts (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A ceramic honeycomb body has channels near the outer peripheral wall (1) thereof which are filled with a ceramic or other reinforcing material (2) over the entire length of the channels or over a certain depth from both end surfaces of the channels, and can be advantageously used as a catalyst support for purifying exhaust gases of an internal combustion engine. <IMAGE>
Description
SPECIFICATION
Ceramic honeycomb body
The present invention relates to a ceramic honeycomb body, to be used for example as a catalyst support for purifying exhaust gases of an internal combustion engine.
In general, ceramic honeycomb bodies have a large surface area per unit volume and have excellent heat resistance and are used for example as catalyst supports for purifying exhaust gases of internal combustion engines. It is desirable, for the purpose of improving the function of such bodies, that partition walls defining the channels of the honeycomb body are thinner and have a larger porosity.
However, when the partition walls are made thinner and the porosity is increased, the mechanical strength of the honeycomb body itself is lowered. When a honeycomb body is practically used, it is put in a holder and set in for example an internal combustion engine system, but the body is apt to be chipped, or when the clamping pressure of the holder is increased for preventing vibration, the honeycomb body is apt to be cracked.
For preventing these drawbacks, the following methods have been proposed:
(1 ) Coating a glaze only on the outer peripheral wall surface of a honeycomb body (Japanese
Utility Model Laid Open Application No. 133,860/78);
(2) Coating heat resistant glass ceramic powder only on the outer peripheral wall (Japanese Utility
Model Application Publication No. 34,373/78); and
(3) Thickening the outer peripheral wall of a ceramic honeycomb body by an integrally extruding method (Japanese Patent Laid Open Application No. 88,908/74).
However, in the former two methods, wherein only the outer peripheral wall surface of a honeycomb body is coated with a reinforcing material, the strength of the body cannot be satisfactorily improved. In the latter method, strain is caused in the honeycomb body upon firing, and cracks often occur at the peripheral portion, and therefore the strength of the body also cannot be satisfactorily improved.
The present invention provides a ceramic honeycomb body, wherein the channels extending therethrough near the outer peripheral portion of the body are at least partly filled with a reinforcing material.
In order to prevent slippage of a honeycomb body caused by vibration, both ends of the body are generally clamped between two flanges which project inwardly in a holding vessel from the inner surface thereof, when the honeycomb body is held in the holding vessel. In this case, the channels extending inwardly along several millimeters from the outer periphery of the honeycomb body are closed by the flange and do not permit a fluid to flow therethrough. The present inventors noticed this point and therefore utilized it by filling a reinforcing material in the channels at the above described portion to reinforce the portion.
The reinforcing material used is preferably a heat resistant material, for example a ceramic material such as cordierite or mullite or a castable refractory material such as alumina cement. The reinforcement can be carried out with respect to both an unfired honeycomb body and a honeycomb body once fired. However, when a ceramic material is used as the reinforcing material, it is necessary to fire the honeycomb body after the channels extending therethrough are filled with the ceramic material.
When a castable refractory material is used as the reinforcing material, if a once fired honeycomb body is used, the desired reinforced honeycomb body can be obtained by merely curing the fired honeycomb body after the channels of the body are filled with the castable refractory material, without again firing.
The invention will be further described, by way of example only, with reference to the accompanying drawings, wherein:
Figures 1 A and 1 B are diagrammatic sectional and side views respectively of a honeycomb body illustrating the channels extending therethrough filled with a reinforcing material over their entire length; and
Figures 2A and 2B are diagrammatic sectional and side views respectively of a honeycomb structural body illustrating the channels extending therethrough filled with a reinforcing material partly along their length from their open end portions.
In Figures 1 and 2, reference numeral 1 represents the outer peripheral wall of the honeycomb body, numeral 2 represents the reinforcing material filled in the channels of the honeycomb body, and numeral 3 represents a channel or channel portion which is not filled with the reinforcing material.
Channels near the outer peripheral portion are at least partly filled with a reinforcing material as described above. It is preferable that the channels are filled with reinforcing material over their entire length as illustrated in Figure 1 in order to improve the compression strength of the honeycomb body.
However, when it is intended merely to prevent chipping at the end corner portions of a honeycomb body, local filling of a reinforcing material in the channels from their end surfaces up to a given depth as illustrated in Figure 2 is effective.
The invention will now be further described with reference to the following illustrative Examples.
EXAMPLE 1
As ceramic honeycomb bodies to be reinforced, there were used fired and unfired cordierite ceramic honeycomb bodies having an outer diameter of 90 mm, a length of 1 10 mm, a thickness of the partition walls of 0.3 mm, a thickness of the outer peripheral wall of 0.3 mm, and a channel number per square inch of about 300. As reinforcing materials there were used unfired ceramic raw material formulated for producing the cordierite ceramic honeycomb body, and cordierite powder having a grain size of not larger than 100 mesh obtained by grinding the fired ceramic honeycomb body. Each of the powders were mixed together with water and binder in the following mixing ratio to obtain pasty filling materials A and B.
Filling material A: Parts by weight
Cordierite ceramic raw material (unfired) 100
Water 25
Carboxylmethylcellulose 2
Filling material B: Parts by weight
Cordierite powder 100
Water 22
Carboxylmethylcellulose 2
A plastic mask was tightly adhered to the area of the end surfaces of the honeycomb body in which the channels should not be filled with the filling material, and the above described pasty filling material was filled in the channels near the outer periphery of the honeycomb body. Each of the pasty filling materials A and B was filled in the channels up to a depth of 10 mm from the end surface of the channels or filled in the channels over their total length.After the filling, the water in the pasty filling material was removed by drying and the dried honeycomb body was fired at 1,370-i ,4000C for 12 hours under an oxidizing condition to obtain the desired ceramic honeycomb body.
The reinforcing effect was estimated in the following manner. The impact strength of the filled portion was indicated by the breaking energy measured by means of a Chalpy Impact Tester. Further, the compression breaking load was measured by using a jig matched to the outer peripheral shape of the honeycomb body by means of a universal testing machine. The obtained results are shown in the following Table 1.
TABLE 1
(average value of five samples)
Honeycomb body at the filling A B Not filled total length Unfired body 3.4 3.1 Impact both end portions breaking 1.5 energy (kg.cm) total length Fired body r 1 3.0 3.3 both end portions total length 3,210 3,080 Unfired body Compression both end portions 2,360 2,490 breaking 1,660 load (kg) total length 3,230 3,270 Fired body both end portions 2,410 2,340 EXAMPLE 2
A fired ceramic honeycomb body, which was the same as used in Example 1 in respect of the material and the shape thereof, was used as a ceramic honeycomb body to be reinforced. Alumina cement was used as reinforcing material, and 100 parts by weight of alumina cement were mixed with 20 parts by weight of water.to prepare a pasty filling material. The filling material was filled in the channels near the outer periphery of the honeycomb body over the entire length of the channels. The honeycomb body filled with the filling material was immersed in water at 200C over one day to cure the cement, and then the above treated honeycomb body was left to stand for one week in air. Then, the strength of the reinforced honeycomb body was measured in the same manner as described in Example 1.The obtained results are shown in the following Table 2.
TABLE 2
(average value of five samples)
Filled with alumina cement Not filled Impact breaking energy (kg~cm) 5.5 1.5 Compression breaking load (kg) 2,310 1,660 It can be seen from the above described examples that the reinforced ceramic honeycomb bodies according to the present invention obtained by filling the channels over their entire length with a ceramic material having the same formulation as that of a honeycomb body to be reinforced have a compression strength of as high as about twice that of honeycomb bodies whose channels are not filled with a reinforcing material, and further have an impact breaking energy of as high as about twice that of the honeycomb bodies whose channels are not filled with a reinforcing material. (Since the impact breaking energy is measured by putting the steel nose of a Chalpy Impact Tester to the portion filled with a ceramic material, a honeycomb body whose channels are locally filled with the ceramic material has the same impact breaking energy as a honeycomb body whose channels are filled with the ceramic material over their entire length.) Furthermore, the honeycomb body whose channels are filled with alumina cement has an impact breaking energy of as high as about 3.5 times that of the honeycomb body whose channels are not filled with alumina cement, and further has a compression breaking strength of as high as about 1.5 times that of the honeycomb body whose channels are not filled with alumina cement.
Also, as seen from the above described examples, a honeycomb structural body whose channels are filled with a reinforcing material over their entire length is hardly broken even when the pressure for clamping a holder for the honeycomb body is increased. Even the honeycomb structural body whose channels are reinforced only in parts extending from both end surfaces thereof in order to prevent chipping of the edge portions of the body has a strength as high as about 3 times that of a honeycomb body whose channels are not reinforced, and has a high resistance against breakage due to vibration.
Claims (9)
1. A ceramic honeycomb body, wherein the channels extending therethrough near the outer peripheral portion of the body are at least partly filled with a reinforcing material.
2. A ceramic honeycomb body as claimed in claim 1, wherein the channels near the outer peripheral portion of the body are filled with reinforcing material only at the parts extending from both end surfaces of the body in the extending direction of the channels.
3. A ceramic honeycomb body as claimed in claim 1, wherein the channels near the outer peripheral portion of the body are filled with reinforcing material over the entire lengths thereof.
4. A ceramic honeycomb body as claimed in any of claims 1 to 3, wherein the reinforcing material is a ceramic material.
5. A ceramic honeycomb body as claimed in claim 4, wherein the reinforcing material is cordierite or mullite.
6. A ceramic honeycomb body as claimed in any of claims 1 to 3, wherein the reinforcing material is a castable refractory material.
7. A ceramic honeycomb body as claimed in claim 6, wherein the reinforcing material is alumina cement.
8. A ceramic honeycomb body according to claim 1, substantially as herein described with reference to, and as shown in, Figure 1 or Figure 2 of the accompanying drawings.
9. A ceramic honeycomb body according to claim 1, substantially as herein described in any of the foregoing Examples.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3223180A JPS56129042A (en) | 1980-03-14 | 1980-03-14 | Honeycomb structure of ceramic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2071640A true GB2071640A (en) | 1981-09-23 |
| GB2071640B GB2071640B (en) | 1983-12-14 |
Family
ID=12353191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8107974A Expired GB2071640B (en) | 1980-03-14 | 1981-03-13 | Ceramic honeycomb body |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS56129042A (en) |
| DE (1) | DE3109314C2 (en) |
| GB (1) | GB2071640B (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0070203A1 (en) * | 1981-07-15 | 1983-01-19 | Corning Glass Works | Method and apparatus for selectively manifolding honeycomb structures |
| US4419108A (en) * | 1982-02-22 | 1983-12-06 | Corning Glass Works | Filter apparatus and method of filtering |
| US4509966A (en) * | 1983-05-18 | 1985-04-09 | General Motors Corporation | Wall-flow monolith filter with porous plugs |
| US4557682A (en) * | 1982-02-22 | 1985-12-10 | Corning Glass Works | Apparatus for fabrication of solid particulate filters |
| EP0449556A2 (en) * | 1990-03-27 | 1991-10-02 | Ngk Insulators, Ltd. | Production of ceramic honeycomb structural bodies |
| EP0585572A1 (en) * | 1992-08-05 | 1994-03-09 | Corning Incorporated | Apparatus and method for modifying gaseous mixtures |
| US5629067A (en) * | 1992-01-30 | 1997-05-13 | Ngk Insulators, Ltd. | Ceramic honeycomb structure with grooves and outer coating, process of producing the same, and coating material used in the honeycomb structure |
| US5707574A (en) * | 1994-07-08 | 1998-01-13 | Degussa Aktiengesellschaft | Method for the unilateral or bilateral sealing or filling of flow channels in an annular zone of a cylindrical honeycomb body |
| EP0867223A1 (en) * | 1997-03-28 | 1998-09-30 | Ngk Insulators, Ltd. | Ceramic honeycomb structural body |
| EP1153659A1 (en) * | 2000-05-13 | 2001-11-14 | OMG AG & Co. KG | Ceramic honeycomb body with improved resistence to pressure |
| WO2002089979A3 (en) * | 2001-05-02 | 2003-02-20 | Ngk Insulators Ltd | Honeycomb structural body, and honeycomb filter and converter system using the honeycomb structural body |
| EP1484100A1 (en) * | 2002-03-08 | 2004-12-08 | Ngk Insulators, Ltd. | Honeycomb structure, method of manufacturing the structure, and exhaust emission control system |
| US7101601B2 (en) | 2002-10-15 | 2006-09-05 | Denso Corporation | Exhaust gas purifying filter with reinforced peripheral area and method for manufacturing the same |
| EP1580181A3 (en) * | 2004-03-24 | 2006-09-20 | Ngk Insulators, Ltd. | Honeycomb structure and method of manufacturing the same |
| US7655195B1 (en) * | 1999-08-30 | 2010-02-02 | Ngk Insulators, Ltd. | Undulated-wall honeycomb structure and manufacturing method thereof |
| EP2181755A2 (en) * | 2008-10-31 | 2010-05-05 | Ngk Insulators, Ltd. | Honeycomb structure and reactor using honeycomb structure |
| US7972677B2 (en) | 2007-03-27 | 2011-07-05 | Ngk Insulators, Ltd. | Plugged honeycomb structure |
| US8048508B2 (en) | 2007-03-27 | 2011-11-01 | Ngk Insulators, Ltd. | Plugged honeycomb structure |
| US20140127455A1 (en) * | 2012-03-30 | 2014-05-08 | Ngk Insulators, Ltd. | Honeycomb structure |
| US9358487B2 (en) | 2011-03-31 | 2016-06-07 | Hyundai Motor Company | Sealed honeycomb structure and device for cleaning exhaust |
| US9623359B2 (en) | 2011-03-31 | 2017-04-18 | Hyundai Motor Company | Sealed honeycomb structure |
| US10300423B2 (en) | 2011-03-31 | 2019-05-28 | Hyundai Motor Company | Sealed honeycomb structure |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58223419A (en) * | 1982-06-21 | 1983-12-26 | Matsushita Electric Ind Co Ltd | Filter made of ceramic fiber |
| DE3444221A1 (en) * | 1984-10-23 | 1986-04-24 | Buchtal Gmbh, 8472 Schwarzenfeld | Exhaust pipe for an internal-combustion engine |
| DE3444222A1 (en) * | 1984-10-23 | 1986-04-24 | Buchtal Gmbh, 8472 Schwarzenfeld | Device for purifying exhaust gases |
| JP3768550B2 (en) * | 1994-03-11 | 2006-04-19 | 日本碍子株式会社 | Ceramic honeycomb structure |
| JP3867439B2 (en) * | 1998-06-03 | 2007-01-10 | 株式会社デンソー | Honeycomb structure and manufacturing method thereof |
| JP3394449B2 (en) | 1998-06-18 | 2003-04-07 | 日本碍子株式会社 | Thin-walled honeycomb structure and method of reinforcing the same |
| JP4504660B2 (en) | 2003-11-13 | 2010-07-14 | 日本碍子株式会社 | Ceramic honeycomb structure |
| JP2007007559A (en) * | 2005-06-30 | 2007-01-18 | Hitachi Metals Ltd | Ceramic honeycomb filter |
| JP2009243271A (en) * | 2008-03-28 | 2009-10-22 | Mazda Motor Corp | Particulate filter |
| JP5053224B2 (en) * | 2008-10-09 | 2012-10-17 | 本田技研工業株式会社 | Exhaust purification filter |
| US11890609B2 (en) | 2019-09-12 | 2024-02-06 | Corning Incorporated | Honeycomb bodies with improved skin CTE and isostatic strength and methods of making the same |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3505158A (en) * | 1967-12-22 | 1970-04-07 | Coors Porcelain Co | Composite porous-dense ceramic article |
| JPS5150831U (en) * | 1974-10-17 | 1976-04-17 |
-
1980
- 1980-03-14 JP JP3223180A patent/JPS56129042A/en active Granted
-
1981
- 1981-03-11 DE DE3109314A patent/DE3109314C2/en not_active Expired
- 1981-03-13 GB GB8107974A patent/GB2071640B/en not_active Expired
Cited By (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0070203A1 (en) * | 1981-07-15 | 1983-01-19 | Corning Glass Works | Method and apparatus for selectively manifolding honeycomb structures |
| US4419108A (en) * | 1982-02-22 | 1983-12-06 | Corning Glass Works | Filter apparatus and method of filtering |
| US4557682A (en) * | 1982-02-22 | 1985-12-10 | Corning Glass Works | Apparatus for fabrication of solid particulate filters |
| US4509966A (en) * | 1983-05-18 | 1985-04-09 | General Motors Corporation | Wall-flow monolith filter with porous plugs |
| US5188779A (en) * | 1990-03-27 | 1993-02-23 | Ngk Insulators, Ltd. | Production of ceramic honeycomb structural bodies |
| EP0449556A3 (en) * | 1990-03-27 | 1991-11-06 | Ngk Insulators, Ltd. | Production of ceramic honeycomb structural bodies |
| EP0449556A2 (en) * | 1990-03-27 | 1991-10-02 | Ngk Insulators, Ltd. | Production of ceramic honeycomb structural bodies |
| US5629067A (en) * | 1992-01-30 | 1997-05-13 | Ngk Insulators, Ltd. | Ceramic honeycomb structure with grooves and outer coating, process of producing the same, and coating material used in the honeycomb structure |
| EP0585572A1 (en) * | 1992-08-05 | 1994-03-09 | Corning Incorporated | Apparatus and method for modifying gaseous mixtures |
| US5707574A (en) * | 1994-07-08 | 1998-01-13 | Degussa Aktiengesellschaft | Method for the unilateral or bilateral sealing or filling of flow channels in an annular zone of a cylindrical honeycomb body |
| EP0867223A1 (en) * | 1997-03-28 | 1998-09-30 | Ngk Insulators, Ltd. | Ceramic honeycomb structural body |
| US6159431A (en) * | 1997-03-28 | 2000-12-12 | Ngk Insulators, Ltd. | Ceramic honeycomb structural body |
| US7655195B1 (en) * | 1999-08-30 | 2010-02-02 | Ngk Insulators, Ltd. | Undulated-wall honeycomb structure and manufacturing method thereof |
| EP1153659A1 (en) * | 2000-05-13 | 2001-11-14 | OMG AG & Co. KG | Ceramic honeycomb body with improved resistence to pressure |
| US6710014B2 (en) | 2000-05-13 | 2004-03-23 | Dmc2 Degussa Metals Catalysts Cerdec Ag | Honeycomb body made of material with improved radial pressure resistance |
| US7056365B2 (en) | 2001-05-02 | 2006-06-06 | Ngk Insulators, Ltd. | Honeycomb structure, and honeycomb filter and converter system both using the same |
| WO2002089979A3 (en) * | 2001-05-02 | 2003-02-20 | Ngk Insulators Ltd | Honeycomb structural body, and honeycomb filter and converter system using the honeycomb structural body |
| US7867456B2 (en) | 2002-03-08 | 2011-01-11 | Ngk Insulators, Ltd. | Honeycomb structure, method of manufacturing the structure, and exhaust emission control system |
| EP1484100A4 (en) * | 2002-03-08 | 2006-07-05 | Ngk Insulators Ltd | Honeycomb structure, method of manufacturing the structure, and exhaust emission control system |
| EP1484100A1 (en) * | 2002-03-08 | 2004-12-08 | Ngk Insulators, Ltd. | Honeycomb structure, method of manufacturing the structure, and exhaust emission control system |
| US7101601B2 (en) | 2002-10-15 | 2006-09-05 | Denso Corporation | Exhaust gas purifying filter with reinforced peripheral area and method for manufacturing the same |
| EP1580181A3 (en) * | 2004-03-24 | 2006-09-20 | Ngk Insulators, Ltd. | Honeycomb structure and method of manufacturing the same |
| US7429285B2 (en) | 2004-03-24 | 2008-09-30 | Ngk Insulators, Ltd. | Honeycomb structure and method of manufacturing the same |
| US7972677B2 (en) | 2007-03-27 | 2011-07-05 | Ngk Insulators, Ltd. | Plugged honeycomb structure |
| US8048508B2 (en) | 2007-03-27 | 2011-11-01 | Ngk Insulators, Ltd. | Plugged honeycomb structure |
| EP2181755A2 (en) * | 2008-10-31 | 2010-05-05 | Ngk Insulators, Ltd. | Honeycomb structure and reactor using honeycomb structure |
| US9358487B2 (en) | 2011-03-31 | 2016-06-07 | Hyundai Motor Company | Sealed honeycomb structure and device for cleaning exhaust |
| US9623359B2 (en) | 2011-03-31 | 2017-04-18 | Hyundai Motor Company | Sealed honeycomb structure |
| US10065142B2 (en) | 2011-03-31 | 2018-09-04 | Hyundai Motor Company | Sealed honeycomb structure |
| US10300423B2 (en) | 2011-03-31 | 2019-05-28 | Hyundai Motor Company | Sealed honeycomb structure |
| US20140127455A1 (en) * | 2012-03-30 | 2014-05-08 | Ngk Insulators, Ltd. | Honeycomb structure |
| US9447716B2 (en) * | 2012-03-30 | 2016-09-20 | Ngk Insulators, Ltd. | Honeycomb structure |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3109314A1 (en) | 1982-01-07 |
| JPS6312658B2 (en) | 1988-03-22 |
| DE3109314C2 (en) | 1985-08-01 |
| JPS56129042A (en) | 1981-10-08 |
| GB2071640B (en) | 1983-12-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Effective date: 20010312 |