JP3131080B2 - Diesel Particulate Filter - Google Patents
Diesel Particulate FilterInfo
- Publication number
- JP3131080B2 JP3131080B2 JP05209030A JP20903093A JP3131080B2 JP 3131080 B2 JP3131080 B2 JP 3131080B2 JP 05209030 A JP05209030 A JP 05209030A JP 20903093 A JP20903093 A JP 20903093A JP 3131080 B2 JP3131080 B2 JP 3131080B2
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- diesel particulate
- particulate filter
- filter
- wire diameter
- 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.)
- Expired - Fee Related
Links
- 239000000919 ceramic Substances 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 13
- 229920006307 urethane fiber Polymers 0.000 claims description 12
- 239000000835 fiber Substances 0.000 claims description 11
- 238000010304 firing Methods 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 4
- 229910007948 ZrB2 Inorganic materials 0.000 claims description 3
- VWZIXVXBCBBRGP-UHFFFAOYSA-N boron;zirconium Chemical compound B#[Zr]#B VWZIXVXBCBBRGP-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002759 woven fabric Substances 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
-
- 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
Landscapes
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はディ−ゼルエンジンの排
気ガスに含まれるパティキュレ−トを捕集するディ−ゼ
ルパティキュレ−トフィルタに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a diesel particulate filter for collecting particulates contained in exhaust gas of a diesel engine.
【０００２】[0002]
【従来の技術】ディ−ゼルエンジンは断熱圧縮による高
温度の空気中に燃料が噴射され、その燃焼が行われるヘ
トロジニアス燃焼のため、排気ガス中に一酸化炭素や炭
化水素の排出は少ないが、窒素酸化物とパティキュレ−
トの排出量が多いという問題がある。2. Description of the Related Art In a diesel engine, fuel is injected into high-temperature air by adiabatic compression, and the combustion is performed by heterogeneous combustion. Therefore, emission of carbon monoxide and hydrocarbons in exhaust gas is small. Nitrogen oxides and particulates
There is a problem that the amount of emissions is large.
【０００３】このようなパティキュレ−トの大気への放
出を防ぐため、排気流路にフィルタを取付けて排気ガス
を濾過し、清浄化を図るパティキュレ−トフィルタが開
発されている。[0003] In order to prevent such particulates from being released into the atmosphere, a particulate filter has been developed in which a filter is attached to an exhaust passage to filter and clean the exhaust gas.
【０００４】そして、この種のフィルタは次のような条
件が望まれている。 １．エンジンの排気系に接続されるので流路抵抗値が小
さい事。 ２．外形はできるだけ小型の事。 ３．フィルタの再生処理の容易な事。 ４．捕集効率が良好な事。The following conditions are desired for this type of filter. 1. Low flow resistance because it is connected to the exhaust system of the engine. 2. The external shape should be as small as possible. 3. Easy filter regeneration process. 4. Good collection efficiency.
【０００５】[0005]
【発明が解決しようとする課題】上述の条件を満たすに
はフィルタ通孔の穴径はできるだけ大きい方がよいが、
一般には多孔質の軽石状の成型体が市販されており、こ
のような成型体の穴径は０．８〜１．２ｍｍと大きく、
その穴の形状も変則的で連続的になっている。In order to satisfy the above conditions, the diameter of the filter through hole should be as large as possible.
Generally, a porous pumice-like molded product is commercially available, and the hole diameter of such a molded product is as large as 0.8 to 1.2 mm.
The shape of the hole is also irregular and continuous.
【０００６】理想的には曲りくねったパイプ状の穴が通
じていればよいが、このような形状の多孔材は存在しな
いという問題がある。[0006] Ideally, it is only necessary that a meandering pipe-shaped hole be opened, but there is a problem that a porous material having such a shape does not exist.
【０００７】本発明はこのような問題に鑑みてなされた
もので、その目的は前述の条件をできるだけ満たせるよ
うな多孔質の成型体によるディ−ゼルパティキュレ−ト
フィルタを提供することにある。The present invention has been made in view of such a problem, and an object of the present invention is to provide a diesel particulate filter using a porous molded body that can satisfy the above-mentioned conditions as much as possible.
【０００８】[0008]
【課題を解決するための手段】上述の発明の目的を達成
するため、本願の請求項１に係る発明は、多孔質にて導
電性を備えたセラミックス焼結体をフィルタ素子に用い
てパティキュレ−トを捕集し焼却せしめるディ−ゼルパ
ティキュレ−トフィルタにおいて、前記のセラミックス
焼結体は線径が０．４ｍｍ乃至０．８ｍｍである細い線
径を有するウレタン繊維の切口を揃えて束ね、該束ねた
ものの長さ方向を圧して縮め、該圧縮体に導電性を備え
たＳｉＣかサイアロンかのいずれかの泥状のスラリ−を
含浸せしめ、焼成により焼結せしめた焼結体を用いたこ
とを特徴とするディ−ゼルパティキュレ−トフィルタを
提供する。本願の請求項２に係る発明は、多孔質にて導
電性を備えたセラミックス焼結体をフィルタ素子に用い
てパティキュレ−トを捕集し焼却せしめるディ−ゼルパ
ティキュレ−トフィルタにおいて、前記のセラミックス
焼結体は線径が０．４ｍｍ乃至０．８ｍｍである細い線
径を有するウレタン繊維の所定長に切断した多数本を互
いに交差させて丸め、該丸めたものを所定の型に押し込
めたものに導電性を備えたＳｉＣかサイアロンかのいず
れかの泥状のスラリ−を含浸せしめて焼成により焼結せ
しめ、該焼結体の切断により焼却された前記繊維による
細孔を露出せしめた焼結体を用いたことを特徴とするデ
ィ−ゼルパティキュレ−トフィルタを提供する。本願の
請求項３に係る発明は、請求項１又は２に係る発明にお
いて、前記のセラミックス焼結体の導電性は、ＳｉＣの
場合はＺｒＢ2 の添加により、サイアロンの場合はＴｉ
Ｎの添加によるものであることを特徴とするディ−ゼル
パティキュレ−トフィルタを提供する。Means for Solving the Problems In order to achieve the object of the present invention, the invention according to claim 1 of the present application is directed to the use of a porous ceramic sintered body for a filter element as a particulate material. In the diesel particulate filter which collects and incinerates the ceramic sintered body, the ceramic sintered body is bundled with the cut ends of urethane fibers having a fine wire diameter of 0.4 mm to 0.8 mm aligned. The compressed body was compressed by compressing in the longitudinal direction, the compact was impregnated with a slurry slurry of either SiC or Sialon having conductivity, and a sintered body sintered by firing was used. A diesel particulate filter is provided. The invention according to claim 2 of the present application is directed to a diesel particulate filter for collecting and incinerating particulates by using a porous and sintered ceramics sintered body as a filter element. The united body is formed by intersecting a large number of urethane fibers having a fine wire diameter of 0.4 mm to 0.8 mm, each of which has been cut to a predetermined length, crossing each other, and rolling the rounded product into a predetermined mold. A sintered body impregnated with mud slurry of either SiC or Sialon having electrical conductivity, sintered by firing, and exposing pores of the fibers incinerated by cutting the sintered body. The present invention provides a diesel particulate filter characterized by using: The invention according to claim 3 of the present application is the invention according to claim 1 or 2, wherein the conductivity of the ceramic sintered body is such that the addition of ZrB2 in the case of SiC and the addition of Ti in the case of sialon.
A diesel particulate filter characterized by adding N is provided.
【０００９】[0009]
【作用】細い線径のウレタン繊維を多数まとめたものに
泥状のスラリ−を含浸させて焼結によりウレタン繊維を
焼却させてしまうので、焼結体の内部には連続した細孔
が多数残存することになり、細孔の切口が壁面に出た焼
結体をフィルタ素子に使用することにより、捕集効率の
よいフィルタが得られる。[Function] A large number of thin urethane fibers are impregnated with a slurry slurry and the urethane fibers are incinerated by sintering, so that many continuous pores remain inside the sintered body. In other words, a filter having a high collection efficiency can be obtained by using, as a filter element, a sintered body in which the cut ends of the fine holes are exposed on the wall surface.
【００１０】[0010]
【実施例】つぎに本発明の実施例について図面を用いて
詳細に説明する。図１は本発明にかかるディ−ゼルパテ
ィキュレ−トフィルタのフィルタ素子の一実施例の製法
を示す説明図である。Next, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory view showing a manufacturing method of one embodiment of a filter element of a diesel particulate filter according to the present invention.
【００１１】同図（Ａ）における１はそれぞれウレタン
樹脂の繊維で、線径が０．４ｍｍ〜０．８ｍｍのもの
で、多数本が左右の切口を揃えて、例えば長方形に束ね
られて集合体１０に形成されたものであり、図１（Ｂ）
に示すものは該集合体１０を繊維の長さ方向の両側から
圧力を加えて圧縮体１１に形成したものであり、それぞ
れの繊維１が不均一に曲げられて形成されている。In FIG. 1 (A), reference numerals 1 denote urethane resin fibers, each having a wire diameter of 0.4 mm to 0.8 mm. 10 (FIG. 1B).
Is formed by compressing the aggregate 10 from both sides in the longitudinal direction of the fiber into a compressed body 11, and each fiber 1 is formed by being bent unevenly.
【００１２】図１（Ｃ）における２は上述の圧縮体１１
を収納した容器で、上方に注入口２１を揃えており、該
注入口２１から導電性のセラミックスを泥状にしたスラ
リ−２２を注いでウレタンの繊維に十分に含浸させる。In FIG. 1C, reference numeral 2 denotes a compression body 11
Is filled with an injection port 21, and a slurry 22 made of conductive ceramics is poured from the injection port 21 to sufficiently impregnate urethane fibers.
【００１３】この場合、導電性のセラミックスは例えば
ＳｉＣにＺｒＢ2 を添加したもの、あるいはサイアロン
にＴｉＮを添加したものを用いる。In this case, as the conductive ceramic, for example, a ceramic obtained by adding ZrB2 to SiC or a ceramic obtained by adding TiN to Sialon is used.
【００１４】ついで、含浸後の圧縮体を焼成して焼結体
に成形すると、ウレタン繊維は焼失してその線径に対応
する曲りくねった通孔を多数備えた導電性の多孔体が得
られることになる。Then, when the compressed body after impregnation is fired and formed into a sintered body, the urethane fiber is burned off and a conductive porous body having a number of meandering through holes corresponding to the wire diameter is obtained. Will be.
【００１５】図２は本実施例が用いられるパティキュレ
−トフィルタのシステム図であり、同図における３はフ
ィルタケ−スで、上流口３１からのガス流路が主流路と
なるＡ流路４と、副流路となるＢ流路とに分岐されてお
り、本実施例による多孔質の焼結体が、例えばＡ流路４
にはフィルタ素子４１として３個、Ｂ流路５にはフィル
タ素子５１として１個収納されている。FIG. 2 is a system diagram of a particulate filter in which this embodiment is used. In FIG. 2, reference numeral 3 denotes a filter case, and an A flow path 4 in which a gas flow path from an upstream port 31 is a main flow path. And a B-flow passage serving as a sub-flow passage.
, Three filter elements 41 and one filter element 51 in the B channel 5 are accommodated.
【００１６】４２はＡ制御弁、５２はＢ制御弁で、それ
ぞれＡアクチュエ−タ４３、Ｂアクチュエ−タ５３によ
り開閉駆動されて排気ガスをＡ流路４またはＢ流路５に
導くものであり、Ａ制御弁４２の下流には圧力センサ４
４が配置されてコントロ−ラ６に圧力信号を送出するよ
うに配線されている。Reference numeral 42 denotes an A control valve, and 52 denotes a B control valve, which is driven to open and close by an A actuator 43 and a B actuator 53, respectively, to guide exhaust gas to the A flow path 4 or the B flow path 5. , The pressure sensor 4 downstream of the A control valve 42.
4 is arranged and wired so as to send a pressure signal to the controller 6.
【００１７】また、導電性を有するフィルタ素子４１お
よび５１からは通電用の結線がなされ、バッテリ６１や
図示していない発電機を電源としてコントロ−ラ６の指
令８より、それぞれのフィルタ素子の加熱用の電力が供
給されるように構成されている。The conductive filter elements 41 and 51 are electrically connected to each other, and each of the filter elements is heated by a command 8 of the controller 6 using a battery 61 or a generator (not shown) as a power source. Power is supplied.
【００１８】このようなフィルタのシステムでは、例え
ばＡ制御弁４２を開、Ｂ制御弁５２を閉に制御して排気
ガスをＡ流路４に通じてパティキュレ−トを捕集し、そ
の時間の経過によってフィルタ素子４１が目詰りしてく
ると、圧力センサ４４が高い値の圧力信号をコントロ−
ラ６に送出する。In such a filter system, for example, the A control valve 42 is opened and the B control valve 52 is closed so that the exhaust gas flows through the A flow path 4 to collect particulates. When the filter element 41 becomes clogged with the lapse of time, the pressure sensor 44 controls the pressure signal of a high value.
To the server 6.
【００１９】このためコントロ−ラ６はＡ制御弁４２を
閉、Ｂ制御弁５２を開にするとともに、フィルタ素子４
１に加熱用の電力を供給してフィルタ素子４１の温度を
高めて捕集したパティキュレ−トの焼却を行ってフィル
タ素子の再生が図られることになる。Therefore, the controller 6 closes the A control valve 42, opens the B control valve 52, and
The heating power is supplied to 1 to increase the temperature of the filter element 41, and the collected particulates are burned to regenerate the filter element.
【００２０】図３は本発明の他の実施例の製法を示す説
明図である。図３（Ａ）は前記の実施例と同様なウレタ
ンの繊維１４を所定の長さに切断し、互いに交差させて
丸め込み、図３（Ｂ）に示すように所定のサイズの型１
５に押し込んで角形とする。FIG. 3 is an explanatory view showing a manufacturing method according to another embodiment of the present invention. FIG. 3 (A) shows the same urethane fiber 14 as in the above-mentioned embodiment cut into a predetermined length, crossed and rounded, and a mold 1 having a predetermined size as shown in FIG. 3 (B).
Press 5 to make it square.
【００２１】ついで、ウレタン繊維を押し込んだ型１５
に前記と同様な素材の導電性の泥状セラミックスのスラ
リ−を注入し、十分に含浸された後、焼成炉に入れて繊
維を焼却してセラミックスの焼結体を得る。図３
（Ｃ）。Next, a mold 15 into which urethane fibers are pushed
Then, a slurry of the conductive muddy ceramics of the same material as described above is injected, sufficiently impregnated, and then put into a firing furnace to incinerate the fibers to obtain a sintered body of ceramics. FIG.
(C).
【００２２】そして、繊維が焼却された焼結体を切断す
ることにより、切口が露出して多孔性のセラミックス焼
結体が得られ、フィルタ素子として使用の場合には多孔
性により排気ガスが濾過され、パティキュレ−トの捕集
が行えることになる。Then, by cutting the sintered body in which the fibers are incinerated, the cut end is exposed to obtain a porous ceramic sintered body, and when used as a filter element, the exhaust gas is filtered by the porosity. Thus, particulates can be collected.
【００２３】以上、本発明を詳細に説明したが、本発明
の主旨の範囲内で種々の変形が可能であり、これらの変
形を本発明の範囲から排除するものではない。Although the present invention has been described in detail, various modifications can be made within the scope of the present invention, and these modifications are not excluded from the scope of the present invention.
【００２４】[0024]
【発明の効果】以上詳細に説明したように本発明によれ
ば、多孔質にて導電性を備えたセラミックス焼結体に
は、線径が０．４ｍｍ乃至０．８ｍｍである細い線径を
有するウレタン繊維の切口を揃えて束ね、該束ねたもの
の長さ方向を圧して縮め、該圧縮体に導電性を備えたＳ
ｉＣかサイアロンかのいずれかの泥状のスラリ−を含浸
せしめ、焼成により焼結せしめた焼結体あるいは線径が
０．４ｍｍ乃至０．８ｍｍである細い線径を有するウレ
タン繊維の所定長に切断した多数本を互いに交差させて
丸め、該丸めたものを所定の型に押し込めたものに導電
性を備えたＳｉＣかサイアロンかのいずれかの泥状のス
ラリ−を含浸せしめて焼成により焼結せしめ、該焼結体
の切断により焼却された前記繊維による細孔を露出せし
めた焼結体を用いているので、セラミック内に、直径が
揃い、かつ曲がりくねったパイプ状の細孔が長く形成さ
れる。このため、細孔形成に織布、不織布、空間に繊維
を張設したものを用いたものと比較して、パティキュレ
ートを効率よく補足することができる。またセラミック
焼結体に導電性を持たせたために通電によるパティキュ
レ−トの焼却が容易に行えて、フィルタの再生処理が簡
単にできるという効果がある。As described above in detail, according to the present invention, a porous and conductive ceramic sintered body has a fine wire diameter of 0.4 mm to 0.8 mm. The cut ends of the urethane fibers are aligned and bundled, and the length of the bundle is compressed by pressing in the longitudinal direction.
A predetermined length of a sintered body or a urethane fiber having a fine wire diameter of 0.4 mm to 0.8 mm, impregnated with a slurry slurry of either iC or Sialon and sintered by firing. A large number of cut pieces are crossed and rounded, and the rounded pieces are pressed into a predetermined mold, impregnated with a slurry of either SiC or Sialon having conductivity, and sintered by firing. At least, since the sintered body in which the pores of the fibers incinerated by cutting the sintered body are exposed is used, the pipe-shaped pores having a uniform diameter and a meandering pipe shape are formed in the ceramic. You. For this reason, the particulates can be efficiently supplemented as compared with a structure using a woven fabric, a nonwoven fabric, or a structure in which fibers are stretched in a space for forming pores. In addition, since the ceramic sintered body is made conductive, there is an effect that the burning of the particulate by energization can be easily performed, and the regeneration process of the filter can be simplified.
【図１】本発明の一実施例の製法の説明図である。FIG. 1 is an explanatory diagram of a manufacturing method according to an embodiment of the present invention.
【図２】本実施例が用いられるフィルタのシステム図で
ある。FIG. 2 is a system diagram of a filter in which the present embodiment is used.
【図３】本発明の他の実施例の製法の説明図である。FIG. 3 is an explanatory view of a manufacturing method according to another embodiment of the present invention.
１…繊維 １０…集合体 １１…圧縮体 １４…繊維 DESCRIPTION OF SYMBOLS 1 ... Fiber 10 ... Aggregate 11 ... Compressed body 14 ... Fiber
フロントページの続き (56)参考文献 特開 昭61−174179（ＪＰ，Ａ) 特開 昭62−202880（ＪＰ，Ａ) 特開 平２−43914（ＪＰ，Ａ) 特開 昭62−252382（ＪＰ，Ａ) 特開 昭63−210079（ＪＰ，Ａ) 特公 平２−47248（ＪＰ，Ｂ２) 特公 平７−108828（ＪＰ，Ｂ２) 特公 平２−22129（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 46/00 - 46/54 C04B 38/00 - 38/10 F01N 3/02 - 3/038 Continuation of the front page (56) References JP-A-61-174179 (JP, A) JP-A-62-202880 (JP, A) JP-A-2-43914 (JP, A) JP-A-62-252382 (JP) JP-A-63-210079 (JP, A) JP-B-2-47248 (JP, B2) JP-B-7-108828 (JP, B2) JP-B-2-22129 (JP, B2) (58) Field surveyed (Int.Cl. 7 , DB name) B01D 46/00-46/54 C04B 38/00-38/10 F01N 3/02-3/038
Claims (3)
結体をフィルタ素子に用いてパティキュレ−トを捕集し
焼却せしめるディ−ゼルパティキュレ−トフィルタにお
いて、前記のセラミックス焼結体は線径が０．４ｍｍ乃
至０．８ｍｍである細い線径を有するウレタン繊維の切
口を揃えて束ね、該束ねたものの長さ方向を圧して縮
め、該圧縮体に導電性を備えたＳｉＣかサイアロンかの
いずれかの泥状のスラリ−を含浸せしめ、焼成により焼
結せしめた焼結体を用いたことを特徴とするディ−ゼル
パティキュレ−トフィルタ。1. A diesel particulate filter in which a porous and electrically conductive ceramic sintered body is used as a filter element to collect and incinerate particulates, wherein the ceramic sintered body has a wire diameter. Are bundled with the cut ends of urethane fibers having a fine wire diameter of 0.4 mm to 0.8 mm, and the bundles are compressed by compressing the length direction thereof, and the compressed body is made of SiC or Sialon having conductivity. A diesel particulate filter characterized by using a sintered body impregnated with any one of slurry slurry and sintered by firing.
結体をフィルタ素子に用いてパティキュレ−トを捕集し
焼却せしめるディ−ゼルパティキュレ−トフィルタにお
いて、前記のセラミックス焼結体は線径が０．４ｍｍ乃
至０．８ｍｍである細い線径を有するウレタン繊維の所
定長に切断した多数本を互いに交差させて丸め、該丸め
たものを所定の型に押し込めたものに導電性を備えたＳ
ｉＣかサイアロンかのいずれかの泥状のスラリ−を含浸
せしめて焼成により焼結せしめ、該焼結体の切断により
焼却された前記繊維による細孔を露出せしめた焼結体を
用いたことを特徴とするディ−ゼルパティキュレ−トフ
ィルタ。2. A diesel particulate filter in which a porous and electrically conductive ceramic sintered body is used as a filter element to collect and incinerate particulates, wherein the ceramic sintered body has a wire diameter. A large number of urethane fibers having a thin wire diameter of 0.4 mm to 0.8 mm cut into a predetermined length are crossed and rounded to each other, and the rounded one is pressed into a predetermined mold and provided with conductivity. S
The use of a sintered body impregnated with mud slurry of either iC or Sialon, sintering by firing, and exposing pores of the fibers incinerated by cutting the sintered body. Diesel particulate filter.
ｉＣの場合はＺｒＢ2 の添加により、サイアロンの場合
はＴｉＮの添加によるものであることを特徴とする請求
項１または請求項２記載のディ−ゼルパティキュレ−ト
フィルタ。3. The conductivity of the ceramic sintered body is S
3. The diesel particulate filter according to claim 1, wherein iC is obtained by adding ZrB2, and sialon is obtained by adding TiN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05209030A JP3131080B2 (en) | 1993-07-30 | 1993-07-30 | Diesel Particulate Filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05209030A JP3131080B2 (en) | 1993-07-30 | 1993-07-30 | Diesel Particulate Filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0742533A JPH0742533A (en) | 1995-02-10 |
| JP3131080B2 true JP3131080B2 (en) | 2001-01-31 |
Family
ID=16566100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05209030A Expired - Fee Related JP3131080B2 (en) | 1993-07-30 | 1993-07-30 | Diesel Particulate Filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3131080B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7083771B2 (en) | 2002-07-10 | 2006-08-01 | Advanced Composite Materials Corporation | Process for producing silicon carbide fibers essentially devoid of whiskers |
| US20040009112A1 (en) | 2002-07-10 | 2004-01-15 | Advanced Composite Materials Corporation | Silicon carbide fibers essentially devoid of whiskers and method for preparation thereof |
-
1993
- 1993-07-30 JP JP05209030A patent/JP3131080B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0742533A (en) | 1995-02-10 |
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