JPS637817A - Exhaust gas filter - Google Patents
Exhaust gas filterInfo
- Publication number
- JPS637817A JPS637817A JP61150298A JP15029886A JPS637817A JP S637817 A JPS637817 A JP S637817A JP 61150298 A JP61150298 A JP 61150298A JP 15029886 A JP15029886 A JP 15029886A JP S637817 A JPS637817 A JP S637817A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- soot
- inner diameter
- gas filter
- downstream side
- 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 239000004071 soot Substances 0.000 abstract description 32
- 210000004027 cell Anatomy 0.000 abstract description 16
- 210000002421 cell wall Anatomy 0.000 abstract description 16
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 230000001172 regenerating effect Effects 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 2
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 241000232219 Platanista Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 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 1
- 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 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000011295 pitch Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、例えばディーゼルエンジンから排出される粒
子状物質（以下ススという）を補集したススを燃焼させ
ることにより、ディーゼルエンジンから大気へ排出され
るスス量の低減を図るディーゼル排ガスフィルタに関す
るものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to the collection of particulate matter (hereinafter referred to as soot) emitted from a diesel engine, which is emitted into the atmosphere by burning soot. This invention relates to a diesel exhaust gas filter that aims to reduce the amount of soot.
従来の技術
ディーゼルエンジンから排出されるススを補集 −
するためのディーゼル排ガスフィルとして、アルミナで
コーティングされた金属ワイヤメツシュを用いたフィル
タ、発泡剤を用いて多孔質構造としたセラミックフオー
ムフィルタ、及びハニカム形状のセラミックハニカムフ
ィルタなどが考案されている。その中でも、ススの補集
効率が９０係以上で、フィルタによる排ガスの圧力損失
が少ないセラミックハニカムフィルタが、排ガスのスス
を除去するフィルタとして有望視されている。セラミッ
クハニカムフィルタからなるディーゼル排ガスフィルタ
は、コージライト、ムライトなどを主成分として押出し
成型法、抄紙法などにより構成された多数のセルからな
るハニカム構造をなしている。該ハニカム構造体の両端
部は、セメントのような非常に気孔率の小さな長さ約１
０１１Ｂの材料で交互に閉塞されている。これらの上流
側および下流側の閉塞部によって、セルは入口および出
ロ排ガス通器に分割され、排ガス中のススはセル壁でほ
ぼ全量集塵される。エンジンを運転すると、徐々にスス
が堆積してディーゼル排ガスフィルタでの圧力損失が大
きくなり、エンジン性能の低下を招く。そこで、エンジ
ン性能を良好に保つには一定量のススが堆積した時点で
、そのススを燃焼させ、ディーゼル排ガスフィルタを再
生する方法がとられる。従って、ススを円滑に燃焼させ
て、フィルタの再生を何回でも容易に行えるディーゼル
排ガスフィルタが望まれる。Conventional technology Collecting soot emitted from diesel engines −
As diesel exhaust gas filters for this purpose, filters using metal wire mesh coated with alumina, ceramic foam filters with a porous structure using a foaming agent, and honeycomb-shaped ceramic honeycomb filters have been devised. Among them, ceramic honeycomb filters, which have a soot collection efficiency of 90 coefficients or higher and have low pressure loss in exhaust gas through the filter, are considered promising as filters for removing soot from exhaust gas. A diesel exhaust gas filter made of a ceramic honeycomb filter has a honeycomb structure consisting of a large number of cells made of cordierite, mullite, or the like as a main component, and constructed by extrusion molding, paper making, or the like. Both ends of the honeycomb structure are made of a material with a very low porosity, such as cement, having a length of about 1
They are alternately occluded with 011B material. These upstream and downstream blockages divide the cell into an inlet and an outlet exhaust gas passage, and almost all of the soot in the exhaust gas is collected on the cell walls. When the engine is operated, soot gradually accumulates, increasing the pressure loss at the diesel exhaust gas filter and causing a reduction in engine performance. Therefore, in order to maintain good engine performance, a method is used to regenerate the diesel exhaust gas filter by burning the soot once a certain amount of soot has accumulated. Therefore, a diesel exhaust gas filter is desired that can smoothly burn soot and allow the filter to be easily regenerated any number of times.
発明が解決しようとする問題点
ディーゼル排ガスフィルタに堆積したススは、入口端部
で排ガス中の火花や点火ヒータによって着火し、入口端
部で燃焼が広がシ、それと同時にセル内を下流に向かっ
て燃焼する。Problems to be Solved by the Invention The soot deposited on the diesel exhaust gas filter is ignited at the inlet end by sparks in the exhaust gas or by the ignition heater, combustion spreads at the inlet end, and at the same time it moves downstream inside the cell. and burn it.
第３図に示す如く、ディーゼル排ガスフィルタ１０にお
いて、排ガス中のススの一部は入口端部１１に堆積し、
大部分はセル１２内の入口排ガス通路１３のセル壁１４
に堆積する。ここで、入口端部１１に堆積したススに着
火すると、入口端部１１で燃焼が広がシ、それと同時に
入口排ガス通路１３のセル壁１４に堆積したススに伝播
してセル１２内を下流に向かって燃焼する。入口排ガス
通路１３のセル壁１４に堆積したススが燃焼した上流側
のセル壁では、圧力損失が小さくなシ、この部分のセル
壁を通過して入口排ガス通路１３から出口排ガス通路１
５に流れる排ガス量が増加し、下流側のセル壁を通過す
る排ガス量が減少する。As shown in FIG. 3, in the diesel exhaust gas filter 10, part of the soot in the exhaust gas is deposited on the inlet end 11,
Most of the cell wall 14 of the inlet exhaust gas passage 13 in the cell 12
is deposited on. Here, when the soot accumulated at the inlet end 11 is ignited, combustion spreads at the inlet end 11, and at the same time, the soot propagates to the soot accumulated on the cell wall 14 of the inlet exhaust gas passage 13 and flows downstream inside the cell 12. burn towards. The soot deposited on the cell wall 14 of the inlet exhaust gas passage 13 is burned at the upstream cell wall, where the pressure loss is small, and the soot passes through the cell wall in this part and flows from the inlet exhaust gas passage 13 to the outlet exhaust gas passage 1.
The amount of exhaust gas flowing through cell wall 5 increases, and the amount of exhaust gas passing through the cell wall on the downstream side decreases.
燃焼がセル１２内を下流に向かって伝播することにとも
なって、この傾向は、さらに著しくなる。This tendency becomes even more pronounced as combustion propagates downstream within the cell 12.
そこで、下流側のセル壁１４に堆積したススが燃焼する
時には、上流側に比べて、同じスス量が燃焼する間に通
過する排ガス量が少ないので、排ガスによる冷却作用が
少ない。その結果、下流側のセル壁１４では上流側に比
べて燃焼中の温度が高温となる。したがって、入口側で
、排ガスフィルタ１０の再生に適した温度になるように
すると、出口側では燃焼温度が高温になシ過ぎて、セル
壁１４の溶融、および熱衝撃による破壊などの問題が生
じた。再生が何回か繰シ返されると前記溶融、および破
壊部分からススが漏れて大更へ排出される問題が生じた
。Therefore, when the soot deposited on the cell wall 14 on the downstream side burns, the amount of exhaust gas that passes while the same amount of soot is burned is smaller than that on the upstream side, so the cooling effect of the exhaust gas is small. As a result, the temperature during combustion becomes higher in the cell wall 14 on the downstream side than on the upstream side. Therefore, if the temperature at the inlet side is set to a temperature suitable for regenerating the exhaust gas filter 10, the combustion temperature at the outlet side will become too high, causing problems such as melting of the cell walls 14 and destruction due to thermal shock. Ta. When regeneration was repeated several times, a problem arose in which soot leaked from the melted and destroyed parts and was discharged to Osara.
問題点を解決するための手段
上記従来の問題点を解決する技術的手段は、ノ・ニカム
構造体のセルの各々において、排ガス入口側の内径を、
出口側の内径より太きく、テーパ状とするものである。Means for Solving the Problems The technical means for solving the above-mentioned conventional problems is to change the inner diameter of each cell of the no-nicum structure on the exhaust gas inlet side to
It is thicker than the inner diameter on the exit side and has a tapered shape.
作 用
上記構成により、排ガスフィルタ１０の下流側のセル壁
１３の面積は、上流側の面積に比べて小さく、従って堆
積するスス量も少なくなる。排ガスの流量は上流側でも
下流側でも変らないため、下流側では、ススの燃焼によ
り発生する熱量が少なく、排ガスによる冷却作用は変ら
ないので、結果として、下流側では上流側に比べて、燃
焼温度の上昇を少なくすることができる。従って、セル
１４の下流側での過度の温度上昇を防止することができ
る。Effect: With the above configuration, the area of the cell wall 13 on the downstream side of the exhaust gas filter 10 is smaller than the area on the upstream side, and therefore the amount of soot deposited is also reduced. Since the flow rate of exhaust gas is the same on both the upstream and downstream sides, the amount of heat generated by the combustion of soot is small on the downstream side, and the cooling effect of the exhaust gas remains the same.As a result, the combustion rate on the downstream side is lower than that on the upstream side. The rise in temperature can be reduced. Therefore, excessive temperature rise on the downstream side of the cell 14 can be prevented.
実施例 本発明の一実施例を第１図および第２図に示す。Example An embodiment of the invention is shown in FIGS. 1 and 2.
１はディーゼル排ガスフィルタで、例えば次の手法で製
造される。２０鵡以下に裁断したアルミナ繊維３０重量
部と、セラミック原料粉末１６重量部を、水３ｏｏＯ重
量部に懸濁させ、この混合スラリーにポリ酢酸ビニル等
の有機バインダーを添加した後、ポリアクリルアミドな
どの凝集剤で凝集させ、長網式抄紙機で抄造し、シート
を作成した。1 is a diesel exhaust gas filter, which is manufactured by the following method, for example. 30 parts by weight of alumina fibers cut into pieces of 20 cm or less and 16 parts by weight of ceramic raw powder are suspended in 300 parts by weight of water, and an organic binder such as polyvinyl acetate is added to this mixed slurry. The mixture was agglomerated with an aggregating agent and made into a sheet using a fourdrinier paper machine.
得られたシートを段ポール製造と同様の方法で、両端の
ピッチが異なる２個の傘歯車の間を通して波状シートを
作成し、次いで平板状シートと接着してなるコルゲート
シートを作成し、次に、これを芯の周囲に接着しつつ巻
きつけ、両端の内径の異なるハニカム形状を作成した。A corrugated sheet is created by passing the obtained sheet between two bevel gears with different pitches at both ends using the same method as for corrugated pole manufacturing, and then a corrugated sheet is created by adhering it to a flat sheet. This was glued and wrapped around a core to create a honeycomb shape with different inner diameters at both ends.
次に、１つのセル２に流入した排ガスがセル壁３を通過
して他のセルに移行した後排出されるように、ハニカム
の両端を交互に、以下に述べる材料を各セルに同量ずつ
注入することによシ入ロ側、および出口側閉塞部４．５
を形成して、入口、および出口排ガス通路６．７に分割
した。この成型物を空気中において１２５０’Ｃで焼成
してセラミック繊維とセラミック原料粉末をセラミック
化し、ハニカム構造体としてディーゼル排ガスフィルタ
１を得た。ここで、入口側、および出口側閉塞部４．５
を形成する材料は、シートを仮焼し、粉砕した無機材料
２重量部とでんぷん０．１重量部と水３重量部を加えて
のシ状にしたものに、有機粉末０．１重量部を粉状のま
ま加え、攪拌混合したものを用いる。図中、８は堆積し
たスス、矢印は排ガスの流れを示す。Next, the same amount of the material described below is applied to each cell, alternating both ends of the honeycomb so that the exhaust gas that has flowed into one cell 2 passes through the cell wall 3, transfers to the other cell, and is then discharged. By injecting, the inlet side and outlet side closing part 4.5
was formed and divided into an inlet and an outlet exhaust gas passage 6.7. This molded product was fired in air at 1250'C to convert the ceramic fibers and ceramic raw material powder into a ceramic, thereby obtaining a diesel exhaust gas filter 1 as a honeycomb structure. Here, the inlet side and outlet side closing parts 4.5
The material used to form the . Add it in powder form and stir to mix. In the figure, 8 indicates the accumulated soot, and the arrows indicate the flow of exhaust gas.
このようにして得られたディーゼル排ガスフィルタを、
エンジンの排気マニホールドに取シ付けて再生テストを
行なった。エンジン回転数１２４゜ｒｐｍ、）ルク１２
９・ｍで２３時間運転してススを堆積したのち、アイド
リンク状態にすると同時に点火ヒータにより着火して再
生したところ、約３分間で燃焼が終了し、はとんどスス
が残らなかった。The diesel exhaust gas filter obtained in this way is
I installed it on the engine's exhaust manifold and did a playback test. Engine speed 124°rpm,) Luk 12
After operating at 9 m for 23 hours and accumulating soot, the engine was put into an idle state and at the same time ignited with an ignition heater to regenerate the engine. Combustion was completed in about 3 minutes and almost no soot remained.
上記の再生テストを１０回繰り返し行ない、その後、該
排ガスフィルタを取シ出して切断し観察したが、どこに
もクラック、溶融、および剥離部分は見当たらなかった
。The above regeneration test was repeated 10 times, and then the exhaust gas filter was taken out, cut, and observed, but no cracks, melting, or peeling parts were found anywhere.
従来の排ガスフィルタで同様の再生テストを行なったと
ころ、２回までは、特に異常は認められなかったが、３
回目の再生中に、ススの外部への排出が観察され、再生
終了後に、該排ガスフィルタを観察したところ、多数の
クラック、および溶融部分が確認された。When we conducted a similar regeneration test with a conventional exhaust gas filter, no abnormalities were observed up to the second time, but after the third
During the second regeneration, soot was observed to be discharged to the outside, and when the exhaust gas filter was observed after the regeneration was completed, numerous cracks and melted portions were observed.
発明の効果
本発明は以上のような構成によう、以下のような優れた
効果を提供する。Effects of the Invention The present invention provides the following excellent effects with the above configuration.
ハニカム構造体のセルの各々において、排ガス入口側の
内径を、出口側の内径より大きく、テーパ状にすること
により、下流側のセル壁の面積が減少し、堆積するスス
量が減少する。その結果、下流側でススの燃焼によって
発生する熱量が少なくなり、下流側での過度の温度上昇
を防止することができ、排ガスフィルタ全体に温度むら
の少ない、均一な温度分布で燃焼させることができる。In each cell of the honeycomb structure, by making the inner diameter on the exhaust gas inlet side larger than the inner diameter on the outlet side and tapered, the area of the cell wall on the downstream side is reduced, and the amount of soot deposited is reduced. As a result, the amount of heat generated by soot combustion on the downstream side is reduced, making it possible to prevent an excessive temperature rise on the downstream side, and allowing combustion to occur with a uniform temperature distribution with little temperature unevenness throughout the exhaust gas filter. can.
従って、排ガスフィルタの再生が容易になるとともに、
過度の温度上昇によるクラック、溶融および剥離などの
所謂破壊がなくなった０Therefore, it becomes easy to regenerate the exhaust gas filter, and
So-called damage such as cracks, melting, and peeling due to excessive temperature rise has disappeared.
第１図、第２図は本発明の一実施例の排ガスフィルタの
部分斜視図および部分断面図、第３図は従来の排ガスフ
ィルタの部分断面図である。
１・・・・・・排カスフィルタ、２・・川・セル、３・
旧・・セル壁、４．６・・・・・・入口、出口側閉塞部
、６，７・・・・・・入口、出口排ガス通路、８・・・
・・・スス。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第
１ 図
第２図1 and 2 are a partial perspective view and a partial sectional view of an exhaust gas filter according to an embodiment of the present invention, and FIG. 3 is a partial sectional view of a conventional exhaust gas filter. 1... Exhaust scum filter, 2... River cell, 3...
Old...Cell wall, 4.6...Inlet, outlet side blocking part, 6,7...Inlet, outlet exhaust gas passage, 8...
...Susu. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 2
Claims (2)
カム構造体のセル端部に交互に閉塞部を設け、該ハニカ
ム構造体のセルの各々において、排ガス入口側の内径を
、出口側の内径より大きし、排ガス通路をテーパ状とし
たことを特徴とする排ガスフィルタ。(1) Closed portions are provided alternately at the cell ends of a honeycomb structure in which a plurality of cells are formed using porous ceramics, and in each cell of the honeycomb structure, the inner diameter on the exhaust gas inlet side is set to be smaller than the inner diameter on the outlet side. An exhaust gas filter characterized by its large size and tapered exhaust gas passage.
成分とする特許請求の範囲第１項記載の排ガスフィルタ
。(2) The exhaust gas filter according to claim 1, wherein the porous ceramic has a fibrous ceramic as a main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61150298A JPS637817A (en) | 1986-06-26 | 1986-06-26 | Exhaust gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61150298A JPS637817A (en) | 1986-06-26 | 1986-06-26 | Exhaust gas filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS637817A true JPS637817A (en) | 1988-01-13 |
Family
ID=15493945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61150298A Pending JPS637817A (en) | 1986-06-26 | 1986-06-26 | Exhaust gas filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS637817A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5300133A (en) * | 1992-01-17 | 1994-04-05 | Mercedes-Benz Ag | Soot particle exhaust-gas filter |
| US5585598A (en) * | 1994-03-11 | 1996-12-17 | Ricoh Company, Ltd. | Rotary developing device for an image forming apparatus |
| JP2008212917A (en) * | 2007-02-09 | 2008-09-18 | Ibiden Co Ltd | Honeycomb structure body and apparatus for treating exhaust gas |
| KR100930849B1 (en) | 2007-02-09 | 2009-12-10 | 이비덴 가부시키가이샤 | Honeycomb Structure and Exhaust Gas Treatment System |
-
1986
- 1986-06-26 JP JP61150298A patent/JPS637817A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5300133A (en) * | 1992-01-17 | 1994-04-05 | Mercedes-Benz Ag | Soot particle exhaust-gas filter |
| US5585598A (en) * | 1994-03-11 | 1996-12-17 | Ricoh Company, Ltd. | Rotary developing device for an image forming apparatus |
| JP2008212917A (en) * | 2007-02-09 | 2008-09-18 | Ibiden Co Ltd | Honeycomb structure body and apparatus for treating exhaust gas |
| KR100930849B1 (en) | 2007-02-09 | 2009-12-10 | 이비덴 가부시키가이샤 | Honeycomb Structure and Exhaust Gas Treatment System |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4699451B2 (en) | Diesel engine exhaust filter | |
| JP4172986B2 (en) | Honeycomb structure, manufacturing method thereof, and exhaust gas purification system using the honeycomb structure | |
| US4718926A (en) | Exhaust gas filter for diesel engine | |
| JP3925154B2 (en) | Exhaust gas purification filter | |
| EP1450015B1 (en) | Honeycomb filter and exhaust gas purification system | |
| JP3983117B2 (en) | Honeycomb structure and manufacturing method thereof | |
| US6800107B2 (en) | Exhaust gas purifying filter | |
| JPH0550323B2 (en) | ||
| JP2005169308A (en) | Honeycomb filter and its production method | |
| US7128961B2 (en) | Honeycomb structure, method for manufacturing honeycomb structure, and exhaust gas purification system using honeycomb structure | |
| US7645427B2 (en) | Honeycomb structure, manufacturing method of the structure, and exhaust gas purification system using the structure | |
| JP3130587B2 (en) | Honeycomb filter of exhaust gas purification device | |
| JPH0647620U (en) | Exhaust gas purification device | |
| JPS637817A (en) | Exhaust gas filter | |
| JPS61129017A (en) | Exhaust gas filter | |
| JPS62149316A (en) | Exhaust gas filter | |
| JPS61205315A (en) | Exhaust gas filter | |
| JPS62139915A (en) | Exhaust gas filter | |
| JPS61136412A (en) | Exhaust gas filter | |
| JP2004169586A (en) | Exhaust gas fine particle filter for internal combustion engine | |
| JPS63162014A (en) | Exhaust gas filter | |
| JPS61136413A (en) | Exhaust gas filter | |
| JPS62191027A (en) | Exhaust gas filter | |
| JP2001342818A (en) | Exhaust gas fine particle filter | |
| JP2590160Y2 (en) | Exhaust gas purification device |