JPH06241017A - Trap filter device for particulate - Google Patents
Trap filter device for particulateInfo
- Publication number
- JPH06241017A JPH06241017A JP5024367A JP2436793A JPH06241017A JP H06241017 A JPH06241017 A JP H06241017A JP 5024367 A JP5024367 A JP 5024367A JP 2436793 A JP2436793 A JP 2436793A JP H06241017 A JPH06241017 A JP H06241017A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- holding member
- small
- metallic
- exhaust gas
- 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
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
- Exhaust Gas After Treatment (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明はパティキュレートのト
ラップフィルタ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a particulate trap filter device.
【０００２】[0002]
【従来の技術】ディーゼルエンジンにあっては従来か
ら、排気中のパティキュレートを低減するため、排気通
路にトラップフィルタを設け、その捕集パティキュレー
トを燃焼処理するようにしたものが良く知られている
（実開平２ー１１５９０８号公報など）。2. Description of the Related Art In diesel engines, it has been well known that a trap filter is provided in the exhaust passage and the trapped particulates are burned in order to reduce the particulates in the exhaust gas. (Japanese Utility Model No. 2-115908, etc.).
【０００３】[0003]
【発明が解決しようとする課題】ところで、トラップフ
ィルタの再生効率を高めるため、熱伝導率の高いＳｉＣ
材でフィルタを形成するように構成することが考えられ
るが、従来のセラミック素材のようにフィルタ全体をＳ
ｉＣ材で一体形成すると、熱応力や熱疲労で割れが生じ
やすくなるという問題点があった。By the way, in order to enhance the regeneration efficiency of the trap filter, SiC having a high thermal conductivity is used.
Although it may be possible to form the filter with a material, the entire filter is made of S like the conventional ceramic material.
If the iC material is integrally formed, there is a problem that cracks easily occur due to thermal stress or thermal fatigue.
【０００４】この発明はこのような問題点を解決するこ
とを目的とする。The present invention aims to solve such problems.
【０００５】[0005]
【課題を解決するための手段】そのため、この発明はデ
ィーゼルエンジンの排気通路に介装されるパティキュレ
ートのトラップフィルタ装置において、ＳｉＣ製で角柱
状の小型フィルタを素材としてこれらの集合体でフィル
タを構成する一方、ケーシング内でフィルタの少なくと
も後端面側で各小型フィルタが排気の流れ方向へ動くの
を抑える金属製の保持部材を仕切り状に設けると共に、
保持部材に排気の抜け穴を形成したものである。Therefore, according to the present invention, in a particulate trap filter device provided in an exhaust passage of a diesel engine, a small prism-shaped filter made of SiC is used as a material to form a filter with these aggregates. On the other hand, in addition to providing a metal holding member in a partition shape that suppresses each small filter from moving in the exhaust flow direction on at least the rear end face side of the filter in the casing,
An exhaust hole is formed in the holding member.
【０００６】この場合、保持部材とフィルタとの間に金
属繊維またはセラミック繊維などの多孔性緩衝材を介装
する。また、保持部材としてケーシング内面に固定の金
属枠に少なくとも小型フィルタの断面寸法より小さい網
目に金属製ワイヤを張ったものを使用する。In this case, a porous cushioning material such as a metal fiber or a ceramic fiber is interposed between the holding member and the filter. Further, as the holding member, a metal frame fixed to the inner surface of the casing and having a metal wire stretched in a mesh smaller than the cross-sectional size of at least the small filter is used.
【０００７】[0007]
【作用】トラップフィルタはＳｉＣ製の角柱状の小型フ
ィルタを素材（フィルタピース）としてこれらの集合体
で構成することで、熱応力や熱疲労の緩和が有効に図れ
る。また、小型フィルタの集合個数を増減することで、
エンジンの大きさにも容易に対応可能となる。The trap filter can effectively reduce thermal stress and thermal fatigue by using a small prism-shaped filter made of SiC as a material (filter piece) and an assembly thereof. Also, by increasing or decreasing the number of small filters,
The size of the engine can be easily adjusted.
【０００８】フィルタは小型フィルタの集合体に組み立
てケーシング内に収装されるが、フィルタ全体の後端面
側に保持部材を設けたので、パティキュレートの捕集量
が増えてフィルタ前面側の排圧が上昇しても、小型フィ
ルタの一部が排圧に押されて抜け出るようなこともな
い。The filter is assembled into a small filter assembly and housed in a casing. However, since a holding member is provided on the rear end face side of the entire filter, the amount of particulates collected increases and the exhaust pressure on the front face side of the filter increases. Even if the pressure rises, part of the small filter will not be pushed out by the exhaust pressure and will not come out.
【０００９】フィルタと保持部材の間に緩衝材を介装す
ると、小型フィルタが金属製の保持部材に当たって破損
するのを防止できる。また、保持部材の抑え面を金属製
ワイヤで形成するようにすれば、金属製ワイヤの緩衝効
果によりあえて緩衝材を介装しなくてもフィルタの破損
防止が期待できる。If a cushioning material is provided between the filter and the holding member, it is possible to prevent the small filter from hitting the metal holding member and being damaged. Further, if the holding surface of the holding member is formed of a metal wire, the filter can be expected to be prevented from being damaged due to the cushioning effect of the metal wire without the need for a buffer material.
【００１０】[0010]
【実施例】図１，図２において、１はディーゼルエンジ
ンの排気通路に介装されるトラップフィルタ装置で、フ
ィルタ２はＳｉＣ製の角柱（断面正方形）状の小型フィ
ルタ３を素材としてこれらの集合体で構成される。小型
フィルタ３間にはシール材４が介装され、集合体の外側
面を熱膨張性シート５で包囲してケーシング６内に収装
される。なお、各小型フィルタ３は前端面側が閉塞する
セル７ａと後端面側が閉塞するセル７ｂを互い違いに形
成するもので、エンジンからの排気が前端面側で開口す
るセル７ｂから隔壁７ｃを通して後端面側で開口するセ
ル７ａへ流れるのであり、その排気中のパティキュレー
トを隔壁７ｃにて捕集するようになっている。1 and 2, 1 is a trap filter device installed in an exhaust passage of a diesel engine, and the filter 2 is a collection of a small prism 3 (square cross section) filter made of SiC as a material. Composed of the body. A sealing material 4 is interposed between the small filters 3, the outer surface of the assembly is surrounded by a thermally expandable sheet 5, and the assembly is housed in a casing 6. Each small filter 3 has cells 7a closed on the front end face side and cells 7b closed on the rear end face side, which are alternately formed. The exhaust gas from the engine passes through the partition wall 7c from the cell 7b opened on the front end face side to the rear end face side. It flows to the cell 7a which is opened at 1 and the particulates in the exhaust gas are collected by the partition wall 7c.
【００１１】ケーシング６内にはフィルタ２の少なくと
も後端面側で各小型フィルタ３が排気の流れ方向へ動く
のを抑える金属製の保持部材８が設けられる。保持部材
８は排気の抜け穴を備える仕切り状に形成され、フィル
タ２との間に金属繊維またはセラミック繊維などの多孔
性緩衝材１０が介装される。なお、保持部材８としては
図３，図４のように、スチール板で小型フィルタ３の断
面寸法より狭い間隔で複数の桟１１を格子状に形成した
ものや、同じくスチール板に多数の小孔１２を加工した
ものを使用することが好ましいが、フィルタ２との間で
多孔性緩衝材１０が抑えとして利くので、図５，図６の
ように小型フィルタ３の寸法に関係なく、スチール板中
央で桟１３，１４が集中的に交差する格子状に形成して
も良い。A metal holding member 8 is provided in the casing 6 to prevent the small filters 3 from moving in the exhaust flow direction at least on the rear end face side of the filter 2. The holding member 8 is formed in a partition shape having an exhaust hole, and a porous cushioning material 10 such as a metal fiber or a ceramic fiber is interposed between the holding member 8 and the filter 2. As the holding member 8, as shown in FIGS. 3 and 4, a steel plate in which a plurality of crosspieces 11 are formed in a lattice shape at intervals narrower than the cross-sectional size of the small filter 3, or a steel plate having a large number of small holes. It is preferable to use the processed 12 but the porous cushioning material 10 can be used as a restraint between the filter 2 and the filter 2, so that regardless of the size of the small filter 3 as shown in FIGS. Alternatively, the crosspieces 13 and 14 may be formed in a grid pattern in which they intersect in a concentrated manner.
【００１２】このような構成により、トラップフィルタ
２は熱伝導性の高いＳｉＣ製のため、フィルタ再生時
（フィルタは捕集パティキュレートの燃焼温度６００℃
以上に加熱される）の局部的な温度上昇が少なく、捕集
パティキュレートを効率よく燃焼処理することができ
る。しかも、フィルタ２を小型フィルタ３の集合体で構
成することで、熱応力や熱疲労の緩和により割れなどの
発生も少ない。また、フィルタ２は小型フィルタ３の集
合個数に増減することで、エンジンの大きさにも容易に
対応可能となる。With such a structure, since the trap filter 2 is made of SiC having a high thermal conductivity, the trap filter 2 is regenerated (the filter has a trapping particulate combustion temperature of 600 ° C.).
There is little local temperature rise of (heated above), and the trapped particulates can be efficiently burned. Moreover, since the filter 2 is composed of an assembly of the small filters 3, cracks are less likely to occur due to relaxation of thermal stress and thermal fatigue. In addition, by increasing or decreasing the number of filters 2 in the number of small filters 3, the size of the engine can be easily accommodated.
【００１３】ところで、フィルタ２は小型フィルタ３間
にシール材４を介在させて集合体に組み立て、集合体の
外側面を熱膨張性シート５で包囲してケーシング６内に
収装されるが、熱膨張性シート５で集合体を外側面から
抑え付けるだけではなく、フィルタ２後端面側を多孔性
緩衝材１０および保持部材８で各小型フィルタ３が排気
の流れ方向へ動くのを規制するようにしたので、例えば
パティキュレートの捕集量が増えてフィルタ２前端面側
の排圧が上昇しても、小型フィルタ３が排圧に押されて
抜け出るようなことはない。しかも、多孔性緩衝材１０
により小型フィルタ３が金属製の保持部材８に当たって
破損するのを防止できる。By the way, the filter 2 is assembled into an assembly by interposing the sealing material 4 between the small filters 3, and the outer surface of the assembly is surrounded by the thermally expandable sheet 5 and housed in the casing 6. Not only is the heat-expandable sheet 5 restraining the assembly from the outer side surface, but the rear end face side of the filter 2 is restricted by the porous cushioning material 10 and the holding member 8 so that each small filter 3 is prevented from moving in the exhaust flow direction. Therefore, even if, for example, the amount of collected particulates increases and the exhaust pressure on the front end face side of the filter 2 rises, the small filter 3 is not pushed out by the exhaust pressure. Moreover, the porous cushioning material 10
Thus, it is possible to prevent the small filter 3 from hitting the metal holding member 8 and being damaged.
【００１４】なお、保持部材８として図７のように、ケ
ーシング６側に固定の枠体１５に小型フィルタ３の断面
寸法より小さい網目に金属製ワイヤ１６を張ってフィル
タ２の抑え面を形成するようにすれば、金属製ワイヤ１
６の緩衝効果によりあえて多孔性緩衝材１０を介装しな
くてもフィルタ２の破損防止が期待できる。As the holding member 8, as shown in FIG. 7, a metal wire 16 is stretched on a frame 15 fixed to the casing 6 side in a mesh smaller than the cross-sectional size of the small filter 3 to form a holding surface of the filter 2. If so, the metal wire 1
The buffering effect of 6 can be expected to prevent the filter 2 from being damaged even if the porous buffering material 10 is not provided.
【００１５】[0015]
【発明の効果】以上要するにこの発明によれば、ディー
ゼルエンジンの排気通路に介装されるパティキュレート
のトラップフィルタ装置において、ＳｉＣ製で角柱状の
小型フィルタを素材としてこれらの集合体でフィルタを
構成する一方、ケーシング内でフィルタの少なくとも後
端面側で各小型フィルタが排気の流れ方向へ動くのを抑
える金属製の保持部材を仕切り状に設けると共に、保持
部材に排気の抜け穴を形成したので、例えばパティキュ
レートの捕集量が増えてフィルタ前面側の排圧が上昇し
ても、保持部材で小型フィルタの集合体を後端面側から
抑えるので、小型フィルタの抜けを確実に防止できる。
フィルタと保持部材の間に緩衝材を介装すると、小型フ
ィルタが金属製の保持部材に当たって破損するのを防止
できる。また、保持部材の抑え面を金属製ワイヤで形成
するようにすれば、金属製ワイヤの緩衝効果によりあえ
て緩衝材を介装しなくてもフィルタの破損防止が期待で
きる。In summary, according to the present invention, in a particulate trap filter device provided in the exhaust passage of a diesel engine, a small prismatic prismatic filter made of SiC is used as a material to construct a filter. On the other hand, since each small filter is provided in the casing at least on the rear end surface side of the filter to prevent the small filter from moving in the flow direction of the exhaust gas and the exhaust hole is formed in the holding member, for example, Even if the amount of collected particulates increases and the exhaust pressure on the front surface side of the filter rises, the holding member restrains the aggregate of small filters from the rear end surface side, so that the small filters can be reliably prevented from coming off.
If a cushioning material is interposed between the filter and the holding member, it is possible to prevent the small filter from hitting the metal holding member and being damaged. Further, if the holding surface of the holding member is formed of a metal wire, the filter can be expected to be prevented from being damaged due to the cushioning effect of the metal wire without the need for a buffer material.
【００１６】トラップフィルタは熱伝導率の高いＳｉＣ
製のため高い再生効率が得られると共に、小型フィルタ
の集合構造によって熱応力や熱疲労に原因する割れなど
の防止も有効に図れる。しかも、小型フィルタの集合個
数を変えることで、エンジンの大きさにも容易に対応可
能という効果が得られる。The trap filter is SiC having high thermal conductivity.
Since it is manufactured, high regeneration efficiency can be obtained, and cracks caused by thermal stress and thermal fatigue can be effectively prevented by the aggregate structure of small filters. Moreover, by changing the number of small filters assembled, it is possible to easily adapt to the size of the engine.
【図１】この発明の実施例を示す装置の断面図である。FIG. 1 is a sectional view of an apparatus showing an embodiment of the present invention.
【図２】同じくフィルタの正面図である。FIG. 2 is a front view of the same filter.
【図３】同じく保持部材の正面図である。FIG. 3 is a front view of a holding member of the same.
【図４】保持部材の変形例を示す正面図である。FIG. 4 is a front view showing a modified example of a holding member.
【図５】保持部材の変形例を示す正面図である。FIG. 5 is a front view showing a modified example of a holding member.
【図６】保持部材の変形例を示す正面図である。FIG. 6 is a front view showing a modified example of a holding member.
【図７】保持部材の変形例を示す正面図である。FIG. 7 is a front view showing a modified example of a holding member.
２ トラップフィルタ ３ 小型フィルタ（フィルタピース） ６ ケーシング ８ 保持部材 １０ 多孔性緩衝材 2 Trap filter 3 Small filter (filter piece) 6 Casing 8 Holding member 10 Porous cushioning material
───────────────────────────────────────────────────── フロントページの続き (72)発明者 島戸 幸二 岐阜県揖斐郡揖斐川町北方１丁目１番地 イビデン株式会社内 (72)発明者 成瀬 和也 岐阜県揖斐郡揖斐川町北方１丁目１番地 イビデン株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Shimado, 1-1 Ikita, Kitakata, Ibi-cho, Ibi-gun, Gifu Prefecture Within Ibiden Co., Ltd. (72) Inventor, Kazuya Naruse, 1-chome, Kitakata, Ibi-cho, Ibi-gun, Gifu Prefecture In the company
Claims (3)
れるパティキュレートのトラップフィルタ装置におい
て、ＳｉＣ製で角柱状の小型フィルタを素材としてこれ
らの集合体でフィルタを構成する一方、ケーシング内で
フィルタの少なくとも後端面側で各小型フィルタが排気
の流れ方向へ動くのを抑える金属製の保持部材を仕切り
状に設けると共に、保持部材に排気の抜け穴を形成した
ことを特徴とするパティキュレートのトラップフィルタ
装置。1. A particulate trap filter device to be installed in an exhaust passage of a diesel engine, wherein a small prism-shaped filter made of SiC is used as a material to constitute the filter, while the filter is disposed in a casing. A particulate trap filter device characterized in that at least a rear end face side is provided with a metallic holding member in a partition shape for suppressing movement of each small filter in the exhaust flow direction, and an exhaust vent hole is formed in the holding member. .
たはセラミック繊維などの多孔性緩衝材を介装したこと
を特徴とする請求項１に記載のトラップフィルタ装置。2. The trap filter device according to claim 1, wherein a porous cushioning material such as a metal fiber or a ceramic fiber is interposed between the holding member and the filter.
金属枠に少なくとも小型フィルタの断面寸法より小さい
網目に金属製ワイヤを張ったことを特徴とする請求項１
に記載のトラップフィルタ装置。3. A metal wire fixed to the inner surface of the casing as a holding member, at least a metal wire being stretched over a mesh smaller than the cross-sectional size of the small filter.
The trap filter device according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5024367A JPH06241017A (en) | 1993-02-12 | 1993-02-12 | Trap filter device for particulate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5024367A JPH06241017A (en) | 1993-02-12 | 1993-02-12 | Trap filter device for particulate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06241017A true JPH06241017A (en) | 1994-08-30 |
Family
ID=12136227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5024367A Pending JPH06241017A (en) | 1993-02-12 | 1993-02-12 | Trap filter device for particulate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06241017A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020022344A (en) * | 2000-09-20 | 2002-03-27 | 홍민선 | Diesel Particulate filter Using Ceramic Fibers |
| US7244284B2 (en) | 2002-02-26 | 2007-07-17 | Ngk Insulators, Ltd. | Honeycomb filter |
| WO2009113159A1 (en) * | 2008-03-11 | 2009-09-17 | イビデン株式会社 | Exhaust gas purification apparatus |
| US7749458B2 (en) | 2000-01-13 | 2010-07-06 | Ngk Insulators, Ltd. | Honeycomb structure |
| JP2010169074A (en) * | 2008-03-11 | 2010-08-05 | Ibiden Co Ltd | Exhaust emission control device |
| FR2990721A1 (en) * | 2012-05-16 | 2013-11-22 | Peugeot Citroen Automobiles Sa | Particle filter for use in exhaust line of thermal engine e.g. petrol engine of car, has porous ceramic matrix whose retention unit is permeable with gases and placed in pipe between output face of ceramic matrix and output cone of pipe |
-
1993
- 1993-02-12 JP JP5024367A patent/JPH06241017A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7749458B2 (en) | 2000-01-13 | 2010-07-06 | Ngk Insulators, Ltd. | Honeycomb structure |
| KR20020022344A (en) * | 2000-09-20 | 2002-03-27 | 홍민선 | Diesel Particulate filter Using Ceramic Fibers |
| US7244284B2 (en) | 2002-02-26 | 2007-07-17 | Ngk Insulators, Ltd. | Honeycomb filter |
| EP1983166A1 (en) | 2002-02-26 | 2008-10-22 | Ngk Insulators, Ltd. | Honeycomb filter |
| WO2009113159A1 (en) * | 2008-03-11 | 2009-09-17 | イビデン株式会社 | Exhaust gas purification apparatus |
| EP2101046A3 (en) * | 2008-03-11 | 2009-12-02 | Ibiden Co., Ltd. | Exhaust gas purification apparatus |
| JP2010169074A (en) * | 2008-03-11 | 2010-08-05 | Ibiden Co Ltd | Exhaust emission control device |
| FR2990721A1 (en) * | 2012-05-16 | 2013-11-22 | Peugeot Citroen Automobiles Sa | Particle filter for use in exhaust line of thermal engine e.g. petrol engine of car, has porous ceramic matrix whose retention unit is permeable with gases and placed in pipe between output face of ceramic matrix and output cone of pipe |
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