JPH0568828A - Honeycomb filter of exhaust gas purifier - Google Patents
Honeycomb filter of exhaust gas purifierInfo
- Publication number
- JPH0568828A JPH0568828A JP3236573A JP23657391A JPH0568828A JP H0568828 A JPH0568828 A JP H0568828A JP 3236573 A JP3236573 A JP 3236573A JP 23657391 A JP23657391 A JP 23657391A JP H0568828 A JPH0568828 A JP H0568828A
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- cell
- filter
- honeycomb filter
- inflow 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.)
- Granted
Links
- 239000011148 porous material Substances 0.000 claims abstract description 5
- 238000002485 combustion reaction Methods 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 10
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000004071 soot Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 6
- 238000005336 cracking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
Landscapes
- Catalysts (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は内燃機関の排気ガスを浄
化する装置のハニカムフィルタに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a honeycomb filter of an apparatus for purifying exhaust gas of an internal combustion engine.
【０００２】[0002]
【従来の技術】近年、多孔質焼結体によって製造される
排気ガス浄化装置用のハニカムフィルタが提案されてい
る。この種のハニカムフィルタでは、ガス流入側及び流
出側にそれぞれ開口するように複数のセルが形成されて
おり、排気ガスがセル間の内壁を通過する際に浄化され
る構造を有している。このようなセルは、例えば、断面
四角形状或いは断面正三角形状の中空部を有し、その中
空部の断面積はガス流入側及び流出側でほぼ同一に形成
されている。また、フィルタのガス流入側及び流出側の
開口率は共に３０〜４３％程度である。2. Description of the Related Art In recent years, a honeycomb filter for an exhaust gas purifying apparatus manufactured by using a porous sintered body has been proposed. In this type of honeycomb filter, a plurality of cells are formed so as to open on the gas inflow side and the gas outflow side, respectively, and have a structure in which exhaust gas is purified when passing through the inner walls between the cells. Such a cell has, for example, a hollow portion having a quadrangular cross section or an equilateral triangular cross section, and the cross sectional areas of the hollow portions are formed to be substantially the same on the gas inflow side and the gas outflow side. Further, the opening ratios of the gas inflow side and the gas outflow side of the filter are both about 30 to 43%.
【０００３】[0003]
【発明が解決しようとする課題】このような従来のフィ
ルタでは、セル内壁に捕集された煤の量が一定量に達す
ると、煤が燃焼されフィルタは元の状態に再生される。
ところが、所要の濾過能力、即ちセル内壁の比表面積を
確保するためにフィルタ全体を大型化すると、煤の燃焼
時に、フィルタにクラックが生じる危険性が増加する。
つまり、フィルタを大型化した場合、燃焼時にフィルタ
の各部分間で温度差が生じ易く、それによってフィルタ
に働く応力が増大し、クラックが発生する確率が高くな
る。従って、クラックの発生を回避するためには、フィ
ルタを大型化することなく、所要の濾過能力を確保する
ことが要求される。In such a conventional filter, when the amount of soot collected on the inner wall of the cell reaches a certain amount, the soot is burned and the filter is regenerated to its original state.
However, if the size of the filter as a whole is increased in order to secure the required filtering capacity, that is, the specific surface area of the inner wall of the cell, the risk of cracking of the filter during soot combustion increases.
That is, when the size of the filter is increased, a temperature difference is apt to occur between the respective parts of the filter at the time of combustion, which increases the stress acting on the filter and increases the probability of cracking. Therefore, in order to avoid the occurrence of cracks, it is required to secure the required filtration capacity without increasing the size of the filter.
【０００４】例えば、実開昭５８−９２４０９号広報に
開示される従来の別のフィルタでは、ガス流入側のセル
の形状を断面六角形状にし、流出側のセルの形状を断面
三角形状にすることで、流入側の開口率が流出側の開口
率より大きくなるように設定され、これにより所要の濾
過能力を確保しつつ大型化を回避している。For example, in another conventional filter disclosed in Japanese Utility Model Publication No. 58-92409, the shape of the cell on the gas inlet side is hexagonal and the shape of the cell on the outlet side is triangular. Thus, the opening ratio on the inflow side is set to be larger than the opening ratio on the outflow side, whereby the required filtration capacity is ensured and the increase in size is avoided.
【０００５】しかしながら、実開昭５８−９２４０９号
広報のハニカムフィルタでは、流入側のセルピッチが
１．０〜２．５mm程度と比較的小径であったため、ガス
がフィルタを通過する際の圧力損失を充分に小さくする
ことができない。このような理由から、前記フィルタは
実用的なものではなく、よって、圧力損失を低減するた
めの更なる改善が望まれていた。However, in the honeycomb filter disclosed in Japanese Utility Model Laid-Open No. 58-92409, the cell pitch on the inflow side is relatively small, about 1.0 to 2.5 mm, so that the pressure loss when the gas passes through the filter is reduced. It cannot be made small enough. For this reason, the filter is not practical, and therefore further improvement for reducing pressure loss has been desired.
【０００６】そこで、排気ガス流入側及び流出側の開口
率、並びに流入側のセルピッチの好適な組合せについ
て、本発明者らが種々の検討を行ったところ、ハニカム
フィルタの排気ガス流入側の開口率が６０〜７０％のと
き、流出側の開口率を２０〜３０％に設定し、前記流入
側にて開口する各セルのセルピッチを２．５〜５．０mm
に設定することで、圧力損失を従来よりも低減できるこ
とを知見し、その知見に基づいて本発明を完成させた。Therefore, the inventors of the present invention have made various studies on suitable combinations of the exhaust gas inflow side and outflow side aperture ratios, and the inflow side cell pitch. As a result, the exhaust gas inflow side aperture ratio of the honeycomb filter is shown. Is 60 to 70%, the open side opening ratio is set to 20 to 30%, and the cell pitch of each cell opened on the inflow side is 2.5 to 5.0 mm.
It was found that the pressure loss can be reduced as compared with the conventional case by setting to, and the present invention was completed based on the finding.
【０００７】[0007]
【課題を解決するための手段及び作用】本発明では、内
燃機関の排気側に連通するケーシング内に配置されると
共に、軸線方向に延びる複数のセルを有し、各セルは少
なくとも排気ガスの流入側及び排気ガスの流出側の何れ
か一方において開口され、かつ各セルの内壁によって内
燃機関の排気ガスを浄化するハニカムフィルタにおい
て、ハニカムフィルタの排気ガス流入側の開口率が６０
〜７０％のとき、流出側の開口率を２０〜３０％に設定
し、前記流入側にて開口する各セルのセルピッチを２．
５〜５．０mmに設定するようにしたものである。According to the present invention, a plurality of cells arranged in the casing communicating with the exhaust side of the internal combustion engine and extending in the axial direction are provided, and each cell has at least the inflow of exhaust gas. Of the exhaust gas inflow side of the honeycomb filter in which the exhaust gas of the internal combustion engine is purified by the inner wall of each cell and which is opened on either the exhaust gas side or the exhaust gas outflow side.
At 70%, the opening ratio on the outflow side is set to 20 to 30%, and the cell pitch of each cell opened on the inflow side is 2.
It is designed to be set to 5 to 5.0 mm.
【０００８】上記のようなガス流入側及び流出側の開口
率、並びにセルピッチの設定範囲内であれば、排気ガス
がフィルタを通過する際の圧力損失が低く、セル中に排
気ガスを容易に導入することができる。また、所定の濾
過能力（セル内壁の比表面積）を確保した状態でフィル
タ全体を従来の１／２以下の大きさにコンパクトにする
ことができる。従って、クラックの発生率が確実に低下
して、長期にわたるフィルタの使用が可能になり、シス
テム全体のコンパクト化も達成し得る。When the opening ratios of the gas inflow side and the outflow side and the cell pitch are within the set ranges as described above, the pressure loss when the exhaust gas passes through the filter is low, and the exhaust gas is easily introduced into the cell. can do. In addition, the entire filter can be made as compact as 1/2 or less of the conventional size in a state where a predetermined filtering capacity (specific surface area of the inner wall of the cell) is secured. Therefore, the occurrence rate of cracks is surely reduced, the filter can be used for a long time, and the entire system can be made compact.
【０００９】前記フィルタにおいては、排気ガス流入側
の開口率が６０％未満の場合または流出側の開口率が２
０％未満の場合、流入時及び流出時におけるガスの通過
抵抗が大きくなる。また、セル内壁が厚くなるため、ガ
スが内壁を通過する際に圧力が低下してしまう。In the above filter, when the opening ratio on the exhaust gas inflow side is less than 60% or the opening ratio on the outflow side is 2%.
If it is less than 0%, the gas passage resistance increases at the time of inflow and the time of outflow. Moreover, since the inner wall of the cell becomes thicker, the pressure drops when the gas passes through the inner wall.
【００１０】一方、排気ガス流入側の開口率が７０％を
越える場合または流出側の開口率が３０％を越える場合
には、フィルタ通過時における抵抗が小さくなる反面、
セル内壁の厚さが薄くなることで、フィルタの強度が低
下する。On the other hand, when the opening ratio on the exhaust gas inflow side exceeds 70% or when the opening ratio on the outflow side exceeds 30%, the resistance at the time of passing through the filter decreases, but
The strength of the filter is reduced due to the thin inner wall of the cell.
【００１１】そして、流入側のセルのセルピッチが２．
５mm未満であると、圧力損失が大きくなり、実用性が低
下してしまう。また、セルピッチが５．０mmを越える
と、煤捕集率が悪化するため、やはり実用性の低下を招
く。The cell pitch of the cells on the inflow side is 2.
When it is less than 5 mm, the pressure loss becomes large and the practicality is lowered. Further, if the cell pitch exceeds 5.0 mm, the soot collection rate is deteriorated, which also leads to deterioration in practicality.
【００１２】前記流入側にて開口する各セルは内壁の厚
さが０．１５〜０．５mm、気孔径が１〜５０μｍである
ことが望ましい。前記内壁の厚さが０．１５mm未満であ
るとフィルタを製造することが非常に困難になり、０．
５mmを越えると所定の濾過面積をフィルタに確保するこ
とができず実用性に劣るものとなってしまう。更に、前
記気孔径が１μｍ未満であると圧力損失が増大し、５０
μｍを越えると煤捕集率が悪化する。It is desirable that each cell opened on the inflow side has an inner wall thickness of 0.15 to 0.5 mm and a pore diameter of 1 to 50 μm. If the thickness of the inner wall is less than 0.15 mm, it becomes very difficult to manufacture a filter, and it is difficult to manufacture the filter.
If it exceeds 5 mm, a predetermined filtration area cannot be secured in the filter, resulting in poor practicality. Furthermore, if the pore diameter is less than 1 μm, pressure loss increases, and
If it exceeds μm, the soot collection rate deteriorates.
【００１３】また、前記排気ガス流入側にて開口する各
セルは断面六角形状の中空部を有すると共に、排気ガス
流出側にて開口する各セルは断面三角形状の中空部を有
することが望ましい。各セルの中空部を上記形状にする
理由は、各セルを効率的に配置してフィルタをより一層
コンパクトにでき、しかもフィルタに充分な強度を確保
することができるからである。It is desirable that each cell opened on the exhaust gas inflow side has a hollow portion having a hexagonal cross section, and each cell opened on the exhaust gas outflow side has a hollow portion having a triangular cross section. The reason why the hollow portion of each cell has the above-mentioned shape is that each cell can be efficiently arranged to make the filter more compact, and moreover, sufficient strength can be secured for the filter.
【００１４】更に、このようなフィルタでは、フィルタ
の比表面積が１．７〜２．３cm2/gの範囲であることが
好適である。フィルタの比表面積が１．７cm2/g 未満で
は、フィルタに所定の濾過能力を確保することができな
い。一方、２．３cm2/g を越えると、流入時における圧
力損失の低下及び濾過能力の向上が図れる反面、フィル
タ全体が大型化してクラックが発生し易くなる。Further, in such a filter, the specific surface area of the filter is preferably in the range of 1.7 to 2.3 cm 2 / g. When the specific surface area of the filter is less than 1.7 cm 2 / g, it is impossible to secure a predetermined filtering capacity for the filter. On the other hand, when it exceeds 2.3 cm 2 / g, the pressure loss at the time of inflow and the filtering performance can be improved, but the entire filter becomes large and cracks are likely to occur.
【００１５】[0015]
【実施例及び比較例】以下に本発明を具体化した実施例
について、図面を参照しながら詳しく説明する。EXAMPLES AND COMPARATIVE EXAMPLES Examples embodying the present invention will be described in detail below with reference to the drawings.
【００１６】図１に示すように、排気ガス浄化装置１は
金属パイプ製のケーシング２を備え、そのケーシング２
の通路２ａが内燃機関Ｅの排気管路Ｅａに接続されてい
る。このケーシング２内には内燃機関Ｅから放出される
排気ガスを浄化するためのハニカムフィルタ３が配設さ
れている。また、排気管路Ｅａ内には再生処理用のバー
ナー４が装着されている。As shown in FIG. 1, the exhaust gas purifying apparatus 1 comprises a casing 2 made of a metal pipe, and the casing 2
2a is connected to the exhaust pipe Ea of the internal combustion engine E. A honeycomb filter 3 for purifying exhaust gas emitted from the internal combustion engine E is arranged in the casing 2. A burner 4 for regeneration processing is installed in the exhaust pipe Ea.
【００１７】図２から図４に示すように、ハニカムフィ
ルタ３は全体として円柱状（長さ１３０mm、直径１４０
mm）であり、例えば炭化珪素焼結体等の多孔質焼結体に
よってハニカム状に形成されている。このハニカムフィ
ルタ３の軸線方向には複数の中空部５ａ，５ｂが形成さ
れている。各中空部５ａ，５ｂの排気ガス流入側及び流
出側の何れかの端部には、多孔質焼結体からなる封止片
６が配置されている。この封止片６によって、流入側ま
たは流出側の何れかに開口するセル７ａ，７ｂが形成さ
れている。従って、流入側に開口するセル７ａ側に導入
された排気ガスは、各セル７ａ，７ｂ間に位置する内壁
８を介して、流出側に開口する隣接のセル７ｂ側に排出
される。この時、煤のみが流入側に開口するセル７ａの
内壁８面にトラップされることで、排気ガスの浄化が行
われる。As shown in FIGS. 2 to 4, the honeycomb filter 3 has a cylindrical shape as a whole (length: 130 mm, diameter: 140 mm).
mm) and is formed in a honeycomb shape by a porous sintered body such as a silicon carbide sintered body. A plurality of hollow portions 5a and 5b are formed in the axial direction of the honeycomb filter 3. A sealing piece 6 made of a porous sintered body is arranged at either end of each of the hollow portions 5a and 5b on the exhaust gas inflow side or the outflow side. The sealing piece 6 forms cells 7a and 7b that are open on either the inflow side or the outflow side. Therefore, the exhaust gas introduced to the cell 7a side opening to the inflow side is discharged to the adjacent cell 7b side opening to the outflow side via the inner wall 8 located between the cells 7a and 7b. At this time, only soot is trapped on the surface of the inner wall 8 of the cell 7a that is open to the inflow side, so that the exhaust gas is purified.
【００１８】次に、上記のようなハニカムフィルタ３に
おける再生処理について説明する。ハニカムフィルタ３
に所定量の煤がトラップされると、バーナー４に点火さ
れ、ハニカムフィルタ３の加熱が開始される。そして、
ハニカムフィルタ３内の煤が燃焼され、フィルタ３が元
の状態に再生される。Next, the regenerating process in the above honeycomb filter 3 will be described. Honeycomb filter 3
When a predetermined amount of soot is trapped in the burner 4, the burner 4 is ignited and the heating of the honeycomb filter 3 is started. And
Soot in the honeycomb filter 3 is burned, and the filter 3 is regenerated to its original state.
【００１９】ここで、本実施例のハニカムフィルタ３の
構造について図２及び図３に基づいて詳細に説明する。
図２に示すように、前記排気ガス流入側にて開口する各
セル７ａの中空部５ａは、一辺が約１．７mmの断面正六
角形状に形成され、排気ガス流入側の開口率（（中空部
総断面積／フィルタ断面積）ｘ１００(%) ）は６８％で
ある。一方、図３に示すように、排気ガス流出側にて開
口する各セル７ｂの中空部５ｂは、一辺が約１．４５mm
の断面正三角形状に形成され、流出側の開口率は３０％
である。従って、排気ガス流入側の開口率は流出側の開
口率よりも大きく、この時のフィルタの比表面積、即
ち、単位重量当たりの内壁８の総面積は約２．０cm2/g
である。Here, the structure of the honeycomb filter 3 of this embodiment will be described in detail with reference to FIGS.
As shown in FIG. 2, the hollow portion 5a of each cell 7a that is open on the exhaust gas inflow side is formed in a regular hexagonal cross section with a side of about 1.7 mm, and the open area on the exhaust gas inflow side ((hollow The total sectional area of the part / the sectional area of the filter) × 100 (%)) is 68%. On the other hand, as shown in FIG. 3, the hollow portion 5b of each cell 7b opening on the exhaust gas outflow side has a side of about 1.45 mm.
The cross-section is formed into an equilateral triangle, and the opening ratio on the outflow side is 30%.
Is. Therefore, the opening ratio on the exhaust gas inflow side is larger than the opening ratio on the outflow side, and the specific surface area of the filter at this time, that is, the total area of the inner wall 8 per unit weight is about 2.0 cm 2 / g.
Is.
【００２０】また、本実施例のハニカムフィルタ３では
流入側にて開口する各セル７ａのセルピッチ（セル７ａ
の平均開口径）が３mmに設定されている。そして、セル
７ａ，７ｂ間の内壁８の厚さが０．２mmに、かつその気
孔径が１５μｍに設定されている。In addition, in the honeycomb filter 3 of this embodiment, the cell pitch of each cell 7a (cell 7a) that is open on the inflow side is
The average opening diameter is set to 3 mm. The thickness of the inner wall 8 between the cells 7a and 7b is set to 0.2 mm, and the pore diameter thereof is set to 15 μm.
【００２１】以上のように形成されたハニカムフィルタ
３をディーゼルエンジンの排気ガス浄化装置１に用い
て、１０ｇの煤を捕集した後に前述の再生処理を繰り返
し行った。また、煤の捕集前後における圧力損失（mma
q）を測定した。更に、本実施例のフィルタ３と同材
料、同形状及び同サイズ（１３０mmｘ１４０mm）であっ
て、流出側のセル７ａのセルピッチが２．４mm、５．１
mmのフィルタをそれぞれ製造し、比較例１及び比較例２
とした。これらについて比較検討した結果を表１に示
す。The honeycomb filter 3 formed as described above was used for the exhaust gas purifying apparatus 1 of a diesel engine, and after collecting 10 g of soot, the above-mentioned regeneration treatment was repeated. In addition, pressure loss before and after soot collection (mma
q) was measured. Further, the same material, same shape and same size (130 mm × 140 mm) as the filter 3 of this embodiment, and the cell pitch of the cells 7a on the outflow side is 2.4 mm, 5.1.
mm filters were manufactured respectively, and Comparative Example 1 and Comparative Example 2
And Table 1 shows the results of comparative examination of these.
【００２２】[0022]
【表１】 [Table 1]
【００２３】上記の表１から明らかなように、実施例及
び比較例１，２のハニカムフィルタにおいて、煤捕集前
の圧力損失との差は、それぞれ５０mmaq，１１０mmaq，
１３０mmaqであり、実施例では比較例１，２のような大
きな排気ガス圧力の低下は見られなかった。As is clear from Table 1 above, in the honeycomb filters of Examples and Comparative Examples 1 and 2, the difference from the pressure loss before soot collection was 50 mmaq, 110 mmaq, and
It was 130 mmaq, and in Example, a large decrease in exhaust gas pressure as in Comparative Examples 1 and 2 was not seen.
【００２４】[0024]
【発明の効果】以上詳述したように、本発明の排気ガス
浄化装置のハニカムフィルタによれば、圧力損失の増大
を招くことなしに、所要の濾過能力を確保しつつフィル
タ全体を小型化することができる。よって、クラックの
発生率が少なくなり、長期にわたって使用することがで
きるという優れた効果を奏する。As described in detail above, according to the honeycomb filter of the exhaust gas purifying apparatus of the present invention, the overall size of the filter can be reduced while ensuring the required filtering capacity without increasing the pressure loss. be able to. Therefore, the occurrence rate of cracks is reduced, and the excellent effect of being able to use for a long period of time is achieved.
【図面の簡単な説明】[Brief description of drawings]
【図１】 この発明を具体化した一実施例におけるハニ
カムフィルタの装着状態を示す部分正断面図である。FIG. 1 is a partial front cross-sectional view showing a mounted state of a honeycomb filter in an embodiment embodying the present invention.
【図２】 図１のハニカムフィルタの拡大左側面図であ
る。FIG. 2 is an enlarged left side view of the honeycomb filter of FIG.
【図３】 図１のハニカムフィルタの拡大右側面図であ
る。FIG. 3 is an enlarged right side view of the honeycomb filter of FIG.
【図４】 図２のハニカムフィルタのＡ−Ａ線における
側面図である。[Fig. 4] Fig. 4 is a side view taken along the line AA of the honeycomb filter of Fig. 2.
１ 排気ガス浄化装置、２ ケーシング、３ ハニカム
フィルタ、５ａ，５ｂ中空部、７ａ，７ｂ セル、８
内壁、Ｅ 内燃機関。1 Exhaust Gas Purification Device, 2 Casing, 3 Honeycomb Filter, 5a, 5b Hollow Part, 7a, 7b Cell, 8
Inner wall, E Internal combustion engine.
Claims (3)
シング（２）内に配置されると共に、軸線方向に延びる
複数のセル（７ａ，７ｂ）を有し、各セル（７ａ，７
ｂ）は少なくとも排気ガスの流入側及び排気ガスの流出
側の何れか一方において開口され、かつ各セル（７ａ，
７ｂ）の内壁（８）によって内燃機関（Ｅ）の排気ガス
を浄化するハニカムフィルタ（３）において、 ハニカムフィルタ（３）の排気ガス流入側の開口率が６
０〜７０％のとき、流出側の開口率を２０〜３０％に設
定し、前記流入側にて開口する各セル（７ａ）のセルピ
ッチを２．５〜５．０mmに設定したことを特徴とする排
気ガス浄化装置のハニカムフィルタ。1. A plurality of cells (7a, 7b) arranged in the casing (2) communicating with the exhaust side of the internal combustion engine (E) and extending in the axial direction, each cell (7a, 7b) being provided.
b) is opened on at least one of the exhaust gas inflow side and the exhaust gas outflow side, and each cell (7a, 7a,
In the honeycomb filter (3) for purifying the exhaust gas of the internal combustion engine (E) by the inner wall (8) of 7b), the opening ratio on the exhaust gas inflow side of the honeycomb filter (3) is 6
When 0 to 70%, the opening ratio on the outflow side is set to 20 to 30%, and the cell pitch of each cell (7a) opened on the inflow side is set to 2.5 to 5.0 mm. Exhaust gas purification device honeycomb filter.
は内壁（８）の厚さが０．１５〜０．５mm、気孔径が１
〜５０μｍであることを特徴とする請求項１記載の排気
ガス浄化装置のハニカムフィルタ。2. Each cell (7a) opening on the inflow side
Has an inner wall (8) thickness of 0.15 to 0.5 mm and a pore diameter of 1
The honeycomb filter of the exhaust gas purifying apparatus according to claim 1, wherein the honeycomb filter has a thickness of about 50 μm.
（７ａ）は断面六角形状の中空部（５ａ）を有すると共
に、排気ガス流出側にて開口する各セル（７ｂ）は断面
三角形状の中空部（５ｂ）を有することを特徴とする請
求項１または２記載の排気ガス浄化装置のハニカムフィ
ルタ。3. Each cell (7a) opening on the exhaust gas inflow side has a hollow portion (5a) having a hexagonal cross section, and each cell (7b) opening on the exhaust gas outflow side has a triangular cross section. The honeycomb filter of the exhaust gas purifying apparatus according to claim 1 or 2, further comprising a hollow portion (5b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03236573A JP3130587B2 (en) | 1991-09-17 | 1991-09-17 | Honeycomb filter of exhaust gas purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03236573A JP3130587B2 (en) | 1991-09-17 | 1991-09-17 | Honeycomb filter of exhaust gas purification device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0568828A true JPH0568828A (en) | 1993-03-23 |
| JP3130587B2 JP3130587B2 (en) | 2001-01-31 |
Family
ID=17002640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03236573A Expired - Lifetime JP3130587B2 (en) | 1991-09-17 | 1991-09-17 | Honeycomb filter of exhaust gas purification device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3130587B2 (en) |
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|---|---|---|---|---|
| JP2000342920A (en) * | 1999-06-08 | 2000-12-12 | Ngk Insulators Ltd | Ceramic filter |
| WO2002100514A1 (en) * | 2000-05-29 | 2002-12-19 | Ngk Insulators, Ltd. | Filter element and production method thereof |
| KR20030061898A (en) * | 2002-01-12 | 2003-07-23 | 주식회사 씨에이테크 | Soot Filtration Filter and Device for Reducing Soot Using the Same |
| EP1423266A2 (en) * | 2001-08-30 | 2004-06-02 | Corning Incorporated | Honeycomb with varying channel size and die for manufacturing |
| WO2004106702A1 (en) * | 2003-05-06 | 2004-12-09 | Ibiden Co. Ltd. | Honeycomb structure body |
| WO2004113252A1 (en) * | 2003-06-23 | 2004-12-29 | Ibiden Co., Ltd. | Honeycomb structure |
| WO2005079165A3 (en) * | 2004-02-23 | 2005-10-13 | Ibiden Co Ltd | Honeycomb structural body and exhaust gas purifying apparatus |
| JPWO2004024294A1 (en) * | 2002-09-13 | 2006-01-05 | イビデン株式会社 | filter |
| JPWO2004111398A1 (en) * | 2003-06-05 | 2006-07-20 | イビデン株式会社 | Honeycomb structure |
| JP2007111585A (en) * | 2005-10-18 | 2007-05-10 | Hitachi Metals Ltd | Ceramic honeycomb filter |
| US7316722B2 (en) | 2002-09-13 | 2008-01-08 | Ibiden Co., Ltd. | Honeycomb structure |
| US7517502B2 (en) | 2003-10-23 | 2009-04-14 | Ibiden Co., Ltd. | Honeycomb structural body |
| US7556782B2 (en) | 2003-10-20 | 2009-07-07 | Ibiden Co., Ltd. | Honeycomb structured body |
| US7618596B2 (en) | 2003-02-18 | 2009-11-17 | Ngk Insulators | Honeycomb filter and exhaust gas purification system |
| US8062603B2 (en) | 2003-06-23 | 2011-11-22 | Ibiden Co., Ltd. | Honeycomb structural body |
| JP2020510773A (en) * | 2017-02-17 | 2020-04-09 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフトＵｍｉｃｏｒｅ ＡＧ ＆ Ｃｏ．ＫＧ | Soot particle filter with catalyst storage cell |
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1991
- 1991-09-17 JP JP03236573A patent/JP3130587B2/en not_active Expired - Lifetime
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|---|---|---|---|---|
| JP2000342920A (en) * | 1999-06-08 | 2000-12-12 | Ngk Insulators Ltd | Ceramic filter |
| WO2002100514A1 (en) * | 2000-05-29 | 2002-12-19 | Ngk Insulators, Ltd. | Filter element and production method thereof |
| EP1423266A4 (en) * | 2001-08-30 | 2005-11-09 | Corning Inc | Honeycomb with varying channel size and die for manufacturing |
| EP1423266A2 (en) * | 2001-08-30 | 2004-06-02 | Corning Incorporated | Honeycomb with varying channel size and die for manufacturing |
| KR20030061898A (en) * | 2002-01-12 | 2003-07-23 | 주식회사 씨에이테크 | Soot Filtration Filter and Device for Reducing Soot Using the Same |
| US7314496B2 (en) | 2002-09-13 | 2008-01-01 | Ibiden Co., Ltd. | Honeycomb structure |
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| US8012234B2 (en) | 2002-09-13 | 2011-09-06 | Ibiden Co., Ltd. | Honeycomb structural body |
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| US7766991B2 (en) | 2002-09-13 | 2010-08-03 | Ibiden Co., Ltd. | Honeycomb structural body |
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| CN100386505C (en) * | 2003-05-06 | 2008-05-07 | 揖斐电株式会社 | Honeycomb structure body |
| WO2004106702A1 (en) * | 2003-05-06 | 2004-12-09 | Ibiden Co. Ltd. | Honeycomb structure body |
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| CN100391897C (en) * | 2003-06-23 | 2008-06-04 | 揖斐电株式会社 | Honeycomb structure |
| US8062603B2 (en) | 2003-06-23 | 2011-11-22 | Ibiden Co., Ltd. | Honeycomb structural body |
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| US8361400B2 (en) | 2003-06-23 | 2013-01-29 | Ibiden Co., Ltd. | Honeycomb structural body |
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| US7556782B2 (en) | 2003-10-20 | 2009-07-07 | Ibiden Co., Ltd. | Honeycomb structured body |
| US7785695B2 (en) | 2003-10-20 | 2010-08-31 | Ibiden Co., Ltd. | Honeycomb structured body |
| US7517502B2 (en) | 2003-10-23 | 2009-04-14 | Ibiden Co., Ltd. | Honeycomb structural body |
| JP4698585B2 (en) * | 2004-02-23 | 2011-06-08 | イビデン株式会社 | Honeycomb structure and exhaust gas purification device |
| JPWO2005079165A1 (en) * | 2004-02-23 | 2007-10-25 | イビデン株式会社 | Honeycomb structure and exhaust gas purification device |
| WO2005079165A3 (en) * | 2004-02-23 | 2005-10-13 | Ibiden Co Ltd | Honeycomb structural body and exhaust gas purifying apparatus |
| US7585471B2 (en) | 2004-02-23 | 2009-09-08 | Ibiden Co., Ltd. | Honeycomb structured body and exhaust gas purifying device |
| JP2007111585A (en) * | 2005-10-18 | 2007-05-10 | Hitachi Metals Ltd | Ceramic honeycomb filter |
| JP4600826B2 (en) * | 2005-10-18 | 2010-12-22 | 日立金属株式会社 | Ceramic honeycomb filter |
| JP2020510773A (en) * | 2017-02-17 | 2020-04-09 | ユミコア・アクチエンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフトＵｍｉｃｏｒｅ ＡＧ ＆ Ｃｏ．ＫＧ | Soot particle filter with catalyst storage cell |
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|---|---|
| JP3130587B2 (en) | 2001-01-31 |
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