JPS6220613A - Catalyst filter for removal of particulate - Google Patents
Catalyst filter for removal of particulateInfo
- Publication number
- JPS6220613A JPS6220613A JP60158368A JP15836885A JPS6220613A JP S6220613 A JPS6220613 A JP S6220613A JP 60158368 A JP60158368 A JP 60158368A JP 15836885 A JP15836885 A JP 15836885A JP S6220613 A JPS6220613 A JP S6220613A
- Authority
- JP
- Japan
- Prior art keywords
- cell
- inlet side
- blind plug
- gas inlet
- coating layer
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
- F01N3/2825—Ceramics
- F01N3/2828—Ceramic multi-channel monoliths, e.g. honeycombs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—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
-
- 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
- F01N3/033—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 in combination with other devices
- F01N3/035—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 in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
-
- 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
- F01N2250/00—Combinations of different methods of purification
- F01N2250/02—Combinations of different methods of purification filtering and catalytic conversion
-
- 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
- F01N2510/00—Surface coverings
- F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ディーゼルエンシン等の内燃機関から排出
される排気中の・ぐティキュレートを排気系に設けたト
ラップ材に捕集し、燃焼除去するシステムにおける・９
テイキユレート除去用触媒フイルタに関する。[Detailed Description of the Invention] [Field of Industrial Application] This invention collects and burns the guticulates in the exhaust gas discharged from internal combustion engines such as diesel engines in a trap material provided in the exhaust system.・9 in the system that
The present invention relates to a catalytic filter for removing takeylate.
ディーゼルエンシン等から排出される・ぐティキュレー
トを浄化するシステムとして排気系に捕集用フィルタを
設は捕集され九ノ４ティキ、レートｔ−電気ヒーター、
オイルバーナーもしくは触媒等を用いて燃焼させること
が提案されている（特開昭５８−２８５０４号、特開昭
５８−２０２３２４号および特開昭５９−９３９１６号
参照）。／４ティキ、レートを捕集するフィルタは、ガ
ス入口側セルを１個おきに盲栓で塞ぎ、ガス出口側では
入口側で盲栓をしないセルについては盲栓で塞ぎ、入口
側で盲栓をしたセルについては開けてある。このような
フィルタはハニカム型フィルタと呼ばれ、特開昭５８−
１８５９ｉ９号に開示されている。その他三次元網目構
造を有するセラミ、クフィルタ、スティール・ウール、
ワイヤー・メ、シ１等がある。これらのフィルタの中で
、ハニカム型フィルタは、前記のように両端が交互に盲
栓がしてあって、セル側壁にガスが通過する数μｍ〜数
１０μｍのボアが開いているだけであるので、／＃ティ
キュレートの捕集率は他のフィルタの捕集率よシ高い。A collection filter is installed in the exhaust system as a system to purify the exhaust gases emitted from diesel engines, etc.
It has been proposed to perform combustion using an oil burner or a catalyst (see JP-A-58-28504, JP-A-58-202324, and JP-A-59-93916). /4 Tiki, for the filter that collects the rate, plug every other cell on the gas inlet side with a blind plug, and on the gas outlet side, plug with a blind plug for cells that do not have a blind plug on the inlet side, and plug the cells with a blind plug on the inlet side. Cells that have been opened are left open. This type of filter is called a honeycomb type filter, and is described in Japanese Patent Application Laid-open No. 1983-
No. 1859i9. Other ceramics with three-dimensional network structures, filters, steel wool,
There are Wire Me and Shi 1st class. Among these filters, honeycomb filters have blind plugs alternately on both ends as described above, and only have bores of several micrometers to several tens of micrometers open in the cell side walls through which gas passes. , /# Ticulate has a higher collection rate than other filters.
また触媒フィルタとしては、上記・母ティキュレート捕
集フィルタを、パナゾン酸銀、銅、クロム、モリブデン
、ロジウム等の金属で触媒化したフィルタがある（Ｉ＃
開昭５８−８４０４２号、特開昭５８−１０９１３９号
および特開昭５８−１４３８４０号参照）。In addition, as catalyst filters, there are filters in which the above-mentioned mother ticulate collection filter is catalyzed with metals such as silver panazonate, copper, chromium, molybdenum, and rhodium (I#
(See JP-A-58-84042, JP-A-58-109139 and JP-A-58-143840).
前記のようにハニカム型フィルタは、ガスがセル側壁に
設けである数μｍ〜数１０Ａｍのボアを通じて流れるた
め、・母ティキュレート捕集率が高い。しかしながら、
捕集した・臂ティキ、レートを電気ヒーターやオイル・
守−ナー等で燃焼しようとしてもフィルタの前側に捕集
された・臂ティキュレートのみが燃焼し、セルの奥に捕
集され九・母ティキュレートまでは燃焼しない。すなわ
チ、ハニカム型フィルタハ、／苧ティキ、レートの燃焼
伝播性が悪い。As mentioned above, in the honeycomb type filter, gas flows through the bores of several micrometers to several tens of amperes provided in the cell side wall, so that the rate of collection of mother ticulates is high. however,
Collected tiki, rate with electric heater or oil.
Even if an attempt is made to burn it with a protector, only the ticulates collected at the front of the filter will burn, and the ticulates collected at the back of the cell will not burn up to the mother ticulates. In other words, the combustion propagation of the honeycomb filter is poor.
この発明は、上記従来技術の問題点を解決し、燃焼伝播
特性にすぐれたパティキュレート除去用触媒フィルタを
提供すべくなされたものである。しかして、この発明の
／母ティキュレート除去用触媒フィルタは、ガス入口側
セルを１個おきに盲栓で塞ぎ、ガス出口側では、入口側
で盲栓をしないセルについては盲栓で塞ぎ、入口側で盲
栓をしたセルについては開けてあるハニカム型フィルタ
において、ガス入口側において盲栓をしてないセルの側
壁表面にアルミナのコーティング層を形成し、さらに上
記アルミナコーティング層の表面に銅、銀および卑金属
元素から選ばれた少くとも１種の金属を担持させるとと
もに、セルのガス入口側のアルミナコーティング層の表
面の全面に白金族元素の少くとも１種の触媒金属を担持
させてなるものである。この発明のパティキュレート除
去用触媒フィルタにおいては、―に示すように、セラミ
ックモノリス担体１のガス入口側セル２（がスは矢印の
方向に流れる）を１個おきく盲栓３で塞ぎ、が２ｂにつ
いては出口側で開けてあるハニカム型フィルタにおいて
、ガス入口側において盲栓をシナイセル２ａの側壁４の
表面にアルミナのコーティング層５を形成させである。The present invention has been made to solve the problems of the prior art described above and to provide a catalytic filter for removing particulates with excellent combustion propagation characteristics. Therefore, in the catalytic filter for removing mother ticulates of the present invention, every other cell on the gas inlet side is plugged with a blind plug, and on the gas outlet side, cells that are not plugged on the inlet side are plugged with a blind plug, For cells with blind plugs on the inlet side, in an open honeycomb filter, an alumina coating layer is formed on the side wall surface of the cells that are not blind plugged on the gas inlet side, and copper is further applied on the surface of the alumina coating layer. , at least one metal selected from silver and base metal elements is supported, and at least one catalyst metal of platinum group elements is supported on the entire surface of the alumina coating layer on the gas inlet side of the cell. It is something. In the catalyst filter for removing particulates of the present invention, as shown in -, every other cell 2 on the gas inlet side (gas flows in the direction of the arrow) of the ceramic monolith carrier 1 is plugged with a blind plug 3. 2b is a honeycomb type filter that is open on the outlet side, and a blind plug is provided on the gas inlet side to form an alumina coating layer 5 on the surface of the side wall 4 of the sinai cell 2a.
さらに、上記アルミナコーティング層５の表面全体、す
なわち図の６および２に示す位置のアルミナコーティン
グ層表面に、銅、銀および卑金属元素から選ばれた少く
とも１種の金属を担持させるとともに、セルのガス入口
側のアルミナコーチ（ング層の表面の全面、すなわち図
の７に示す位置のアルミナコーティング層表面部分の全
面に１白金族元素の少くとも１種の触媒金属を担持させ
である。この白金族元素の触媒金属としては、白金、パ
ラジウム、ロジウムがとくに好Ｊである。また、卑金属
元素としては、セリウム、二、ケル、コバルト、ストロ
ンチ、ウム、バナジウム等がとくに好ましい。Further, at least one metal selected from copper, silver and base metal elements is supported on the entire surface of the alumina coating layer 5, that is, on the surface of the alumina coating layer at the positions shown in 6 and 2 in the figure, and at least one metal selected from copper, silver and base metal elements is supported. At least one catalyst metal of a platinum group element is supported on the entire surface of the alumina coating layer on the gas inlet side, that is, the entire surface of the alumina coating layer at the position shown in 7 in the figure. Platinum, palladium, and rhodium are particularly preferred as group element catalyst metals. Also, as base metal elements, cerium, dichelium, cobalt, strontium, um, vanadium, and the like are particularly preferred.
この発明の・母ティキ、レート除去用触媒フィルタは、
ハニカム型フィルタのガス入口側に、触媒活性の高い白
金族元素を担持しであるため、パティキュレートの着火
性が良好で、しかもフィルタ前面に均一に着火する。ま
たフィルタのアルミナコーティング層表面全体に銅、銀
および卑金属の少なくとも１種を担持しであるため、フ
ィルタ前面で着火、燃焼する・ｆティキュレートが、フ
ィルタ後方Ｋまで燃焼伝播し、燃焼伝播性が向上する。The mother Tiki rate removal catalytic filter of this invention is:
Since a platinum group element with high catalytic activity is supported on the gas inlet side of the honeycomb type filter, particulate ignition performance is good, and moreover, the particulates are ignited uniformly on the front surface of the filter. In addition, since at least one of copper, silver, and base metal is supported on the entire surface of the alumina coating layer of the filter, the ・f ticulate that ignites and burns at the front of the filter propagates through combustion to the rear K of the filter, resulting in improved combustion propagation. improves.
実施例１〜８
ハニカム型フィルタを吸水処理し、活性アルミナを含む
スラリーを、ガス入口側において盲栓をしてないセルの
側壁表面にコート後、２５０℃で１時間乾燥し、７００
℃で１時間焼成した。つぎに、このサンプルを硝酸銅溶
液中に浸し、アルミナコート層表面全体に、銅を担持後
、乾燥し、５００℃で１時間焼成した。さらＫこのサン
プルのセルのガス入口側のアルミナコーティング層表面
の全面のみをｐｄｃｚ２水溶液を用いてＰｄ素を用いた
以外は実施例１と同じ方法で、実施例２〜８のサンプル
を調製した。Examples 1 to 8 A honeycomb type filter was subjected to water absorption treatment, and a slurry containing activated alumina was coated on the side wall surface of the cell without a blind plug on the gas inlet side, and then dried at 250°C for 1 hour and heated to 700°C.
It was baked at ℃ for 1 hour. Next, this sample was immersed in a copper nitrate solution to support copper on the entire surface of the alumina coat layer, then dried and fired at 500° C. for 1 hour. Furthermore, samples of Examples 2 to 8 were prepared in the same manner as in Example 1 except that Pd element was used only on the entire surface of the alumina coating layer on the gas inlet side of the cell of this sample using an aqueous pdcz2 solution.
第１表
（注）１．白金族元素の担持量１？／を一触媒２、鋼、
銀、卑金属の担持ｊｌｏ、５ ’／ｌ−＃！媒以上のよ
うにして得られた触媒フィルタの夫夫について、／臂テ
ィキュレートの捕集率、着火温度および燃焼率を測定し
、その結果を第２表に示した。Table 1 (Note) 1. Supported amount of platinum group elements 1? / one catalyst two, steel,
Silver, base metal support jlo, 5'/l-#! The collection rate, ignition temperature, and combustion rate of the ticulate of the catalyst filter obtained as above were measured, and the results are shown in Table 2.
比較例１
ハニカム型フィルタの基材（アルミナコーティング層な
し、銅、銀または卑金属元素なし、触媒金属なし）につ
いて、実施例１と同様にして、パティキュレートの捕集
率、着火温度オヨび燃焼率を測定し、その結果を第２表
に示した。Comparative Example 1 Regarding the base material of the honeycomb type filter (no alumina coating layer, no copper, silver or base metal elements, no catalytic metal), the particulate collection rate, ignition temperature and combustion rate were determined in the same manner as in Example 1. The results are shown in Table 2.
比較例２
ハニカム型フィルタを吸水処理し、活性アルミナを含む
スラリーを、ガス入口側において盲栓をしてないセルの
側壁表面にコート後、２５０℃で乾燥し、７００℃で１
時間焼成した。Comparative Example 2 A honeycomb filter was subjected to water absorption treatment, and a slurry containing activated alumina was coated on the side wall surface of the cell without a blind plug on the gas inlet side, dried at 250°C, and heated at 700°C for 1 hour.
Baked for an hour.
このようにして得られたサンプルについて、実施例１と
同様にして、・ぐティキュレートの捕集率、着火温度お
よび燃焼率を測定し、その結果を第２表に示した。Regarding the sample thus obtained, the collection rate, ignition temperature, and combustion rate of .gtticulate were measured in the same manner as in Example 1, and the results are shown in Table 2.
比較例３
ハニカム型フィルタを、比較例２と同様の方法でアルミ
ナコーティングおよび焼成後、ＰｄＣ２２水溶液を用い
て、ガス入口側のアルミナコーティング層表面全面にＰ
ｄを担持した。Ｐｄの担持量は１？／を一触媒であった
。このサンプルについて実施例１と同様にして、・中テ
ィキュレートの捕集率、着火温度および燃焼率を測定し
、その結果を第２表に示した。Comparative Example 3 A honeycomb filter was coated with alumina and fired in the same manner as in Comparative Example 2, and then Pd was applied to the entire surface of the alumina coating layer on the gas inlet side using a PdC22 aqueous solution.
It carried d. Is the amount of Pd supported 1? / was one catalyst. Regarding this sample, the collection rate, ignition temperature, and combustion rate of medium ticulate were measured in the same manner as in Example 1, and the results are shown in Table 2.
第２表
※１人ガス温度２００℃、エンジン回転数２００Ｏｒｐ
ｍ※２／４ティキュレートが燃え始める温度〔発明の効
果〕
第２表に示した実施例と比較例の結果から明らかのよう
に、白金族元素をフィルタ前面のアルミナコーティング
層に、および銅、銀および卑金属元素から選ばれた少く
とも１種の金属をアルミナコーティング層に担持したこ
の発明の触媒フィルタは、比較例のフィルタにくらべて
、燃焼伝播性においてすぐれている。例えば実施例１と
比較例３とを比較すると、前者は後者に対して・々ティ
キュシー８着火温度で約５０℃向上し、・千ティキュレ
ート燃焼率で約４０％向上する。Table 2 *1 person Gas temperature 200℃, engine speed 200Orp
Temperature at which m*2/4 ticulate starts to burn [Effect of the invention] As is clear from the results of the Examples and Comparative Examples shown in Table 2, platinum group elements were added to the alumina coating layer on the front of the filter, copper, The catalyst filter of the present invention, in which the alumina coating layer supports at least one metal selected from silver and base metal elements, has superior combustion propagation properties compared to the filter of the comparative example. For example, when comparing Example 1 and Comparative Example 3, the former shows an improvement of approximately 50° C. in ignition temperature of 1,000 ticulates and approximately 40% in combustion rate of 1,000 ticulates compared to the latter.
図はこの発明のハニカム型・千ティキ、レート除去用触
媒フィルタを略示的に示す断面的説明図である。
１・・・セラミックスモノリス担体、２・・・ガス入口
側セル、２ｈ・・・ガス入口側で盲栓をしないセル、２
ｂ・・・ガス入口側で盲栓をしたセル、３および３ａ・
・・盲栓、４・・・セル側壁、５・・・アルミナのコー
ティング層、６・・・銅、銀または卑金属元素のアルミ
ナ表面における担持部の位置、７・・・白金族元素およ
び銅、銀または卑金属元素のアルミナ表面における担持
部の位置。The figure is a cross-sectional explanatory view schematically showing a honeycomb type, 1,000-meter-sized, rate-removing catalytic filter of the present invention. 1... Ceramic monolith carrier, 2... Gas inlet side cell, 2h... Cell without blind plug on gas inlet side, 2
b...Cell with a blind plug on the gas inlet side, 3 and 3a.
... Blind plug, 4... Cell side wall, 5... Alumina coating layer, 6... Position of supporting part of copper, silver or base metal element on alumina surface, 7... Platinum group element and copper, The position of the support of silver or base metal elements on the alumina surface.
Claims (1)
は入口側で盲栓をしないセルについては盲栓で塞ぎ、入
口側で盲栓をしたセルについては開けてあるハニカム型
フィルタにおいて、ガス入口側において盲栓をしてない
セルの側壁表面にアルミナのコーティング層を形成し、
さらに、上記アルミナコーティング層の表面に銅、銀お
よび卑金属元素から選ばれた少くとも１種の金属を担持
させるとともに、セルのガス入口側のアルミナコーティ
ング層の表面の全面に白金族元素の少くとも１種の触媒
金属を担持させてなるパティキュレート除去用触媒フィ
ルタ。Every other cell on the gas inlet side is plugged with a blind plug, and on the gas outlet side, cells that are not plugged on the inlet side are plugged with a blind plug, and cells with a blind plug on the inlet side are opened in the honeycomb type filter. , an alumina coating layer is formed on the side wall surface of the cell without a blind plug on the gas inlet side,
Furthermore, at least one metal selected from copper, silver, and base metal elements is supported on the surface of the alumina coating layer, and at least one platinum group element is supported on the entire surface of the alumina coating layer on the gas inlet side of the cell. A catalytic filter for removing particulates that supports one type of catalytic metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60158368A JPS6220613A (en) | 1985-07-19 | 1985-07-19 | Catalyst filter for removal of particulate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60158368A JPS6220613A (en) | 1985-07-19 | 1985-07-19 | Catalyst filter for removal of particulate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6220613A true JPS6220613A (en) | 1987-01-29 |
| JPH045803B2 JPH045803B2 (en) | 1992-02-03 |
Family
ID=15670161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60158368A Granted JPS6220613A (en) | 1985-07-19 | 1985-07-19 | Catalyst filter for removal of particulate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6220613A (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665322A (en) * | 1989-03-15 | 1997-09-09 | Kabushiki Kaisha Riken | Method of cleaning exhaust gas |
| EP0900922A3 (en) * | 1995-05-30 | 2000-06-28 | Sumitomo Electric Industries, Ltd. | Particulate trap for diesel engine |
| WO2000050745A1 (en) * | 1999-02-26 | 2000-08-31 | Johnson Matthey Public Limited Company | Monolithic catalyst/filter apparatus |
| KR20020058812A (en) * | 2000-12-30 | 2002-07-12 | 이계안 | Exhausted gas recirculation apparatus |
| EP1541817A1 (en) * | 2003-06-05 | 2005-06-15 | Ibiden Co., Ltd. | Honeycomb structure body |
| FR2868334A1 (en) * | 2004-03-04 | 2005-10-07 | Bosch Gmbh Robert | DEVICE FOR PURIFYING GASEOUS MIXTURES AND METHOD FOR MANUFACTURING SUCH A DEVICE |
| WO2007079992A1 (en) * | 2005-12-30 | 2007-07-19 | Robert Bosch Gmbh | Device for the treatment of combustion products which are formed during a combustion |
| JP2009219971A (en) * | 2007-03-20 | 2009-10-01 | Denso Corp | Ceramic honeycomb structure |
| JP2009219970A (en) * | 2007-03-20 | 2009-10-01 | Denso Corp | Catalyst material |
| JP2011056393A (en) * | 2009-09-09 | 2011-03-24 | Mitsubishi Motors Corp | Exhaust gas cleaning apparatus |
| EP1911507B1 (en) * | 2006-10-05 | 2011-10-12 | Ibiden Co., Ltd. | Honeycomb structured body |
| JP2011218295A (en) * | 2010-04-09 | 2011-11-04 | Denso Corp | Exhaust gas purifying filter, and method for manufacturing the same |
| JP2011218294A (en) * | 2010-04-09 | 2011-11-04 | Denso Corp | Exhaust gas cleaning filter and method for production therof |
| US8858903B2 (en) * | 2013-03-15 | 2014-10-14 | Clean Diesel Technology Inc | Methods for oxidation and two-way and three-way ZPGM catalyst systems and apparatus comprising same |
| JP2015158206A (en) * | 2006-12-01 | 2015-09-03 | ビーエーエスエフ コーポレーション | Zone coated filter, and emission treatment systems and methods |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117326A (en) * | 1981-01-12 | 1982-07-21 | Toyota Motor Corp | Filter for exhaust gas of internal-combustion engine |
| JPS57194048A (en) * | 1981-05-23 | 1982-11-29 | Toyota Motor Corp | Waste gas filter |
| JPS58143112A (en) * | 1982-02-17 | 1983-08-25 | ゾイナ−シユテルケル・ゲ−エムベ−ハ−・ウント・コンパニ−・カ−ゲ− | Apparatus for purifying exhaust gas of diesel engine in automobile |
| JPS5956316U (en) * | 1982-10-07 | 1984-04-12 | トヨタ自動車株式会社 | Internal combustion engine exhaust gas filter |
-
1985
- 1985-07-19 JP JP60158368A patent/JPS6220613A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57117326A (en) * | 1981-01-12 | 1982-07-21 | Toyota Motor Corp | Filter for exhaust gas of internal-combustion engine |
| JPS57194048A (en) * | 1981-05-23 | 1982-11-29 | Toyota Motor Corp | Waste gas filter |
| JPS58143112A (en) * | 1982-02-17 | 1983-08-25 | ゾイナ−シユテルケル・ゲ−エムベ−ハ−・ウント・コンパニ−・カ−ゲ− | Apparatus for purifying exhaust gas of diesel engine in automobile |
| JPS5956316U (en) * | 1982-10-07 | 1984-04-12 | トヨタ自動車株式会社 | Internal combustion engine exhaust gas filter |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5665322A (en) * | 1989-03-15 | 1997-09-09 | Kabushiki Kaisha Riken | Method of cleaning exhaust gas |
| EP0900922A3 (en) * | 1995-05-30 | 2000-06-28 | Sumitomo Electric Industries, Ltd. | Particulate trap for diesel engine |
| WO2000050745A1 (en) * | 1999-02-26 | 2000-08-31 | Johnson Matthey Public Limited Company | Monolithic catalyst/filter apparatus |
| KR20020058812A (en) * | 2000-12-30 | 2002-07-12 | 이계안 | Exhausted gas recirculation apparatus |
| CN100360768C (en) * | 2003-06-05 | 2008-01-09 | 揖斐电株式会社 | Honeycomb structural body |
| EP1541817A4 (en) * | 2003-06-05 | 2005-08-24 | Ibiden Co Ltd | Honeycomb structure body |
| EP1752630A1 (en) * | 2003-06-05 | 2007-02-14 | Ibiden Co., Ltd. | Honeycomb structural body |
| EP1541817A1 (en) * | 2003-06-05 | 2005-06-15 | Ibiden Co., Ltd. | Honeycomb structure body |
| US8246710B2 (en) | 2003-06-05 | 2012-08-21 | Ibiden Co., Ltd. | Honeycomb structural body |
| FR2868334A1 (en) * | 2004-03-04 | 2005-10-07 | Bosch Gmbh Robert | DEVICE FOR PURIFYING GASEOUS MIXTURES AND METHOD FOR MANUFACTURING SUCH A DEVICE |
| WO2007079992A1 (en) * | 2005-12-30 | 2007-07-19 | Robert Bosch Gmbh | Device for the treatment of combustion products which are formed during a combustion |
| US8039415B2 (en) | 2006-10-05 | 2011-10-18 | Ibiden Co., Ltd. | Honeycomb structure |
| EP1911507B1 (en) * | 2006-10-05 | 2011-10-12 | Ibiden Co., Ltd. | Honeycomb structured body |
| JP2015158206A (en) * | 2006-12-01 | 2015-09-03 | ビーエーエスエフ コーポレーション | Zone coated filter, and emission treatment systems and methods |
| JP2009219971A (en) * | 2007-03-20 | 2009-10-01 | Denso Corp | Ceramic honeycomb structure |
| JP2009219970A (en) * | 2007-03-20 | 2009-10-01 | Denso Corp | Catalyst material |
| JP2011056393A (en) * | 2009-09-09 | 2011-03-24 | Mitsubishi Motors Corp | Exhaust gas cleaning apparatus |
| JP2011218295A (en) * | 2010-04-09 | 2011-11-04 | Denso Corp | Exhaust gas purifying filter, and method for manufacturing the same |
| JP2011218294A (en) * | 2010-04-09 | 2011-11-04 | Denso Corp | Exhaust gas cleaning filter and method for production therof |
| US8858903B2 (en) * | 2013-03-15 | 2014-10-14 | Clean Diesel Technology Inc | Methods for oxidation and two-way and three-way ZPGM catalyst systems and apparatus comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH045803B2 (en) | 1992-02-03 |
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