JP3130587B2 - Honeycomb filter of exhaust gas purification device - Google Patents
Honeycomb filter of exhaust gas purification deviceInfo
- Publication number
- JP3130587B2 JP3130587B2 JP03236573A JP23657391A JP3130587B2 JP 3130587 B2 JP3130587 B2 JP 3130587B2 JP 03236573 A JP03236573 A JP 03236573A JP 23657391 A JP23657391 A JP 23657391A JP 3130587 B2 JP3130587 B2 JP 3130587B2
- Authority
- JP
- Japan
- Prior art keywords
- exhaust gas
- honeycomb filter
- cell
- 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.)
- Expired - Lifetime
Links
- 238000000746 purification Methods 0.000 title claims description 3
- 238000002485 combustion reaction Methods 0.000 claims description 9
- 239000011148 porous material Substances 0.000 claims description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910021426 porous silicon Inorganic materials 0.000 claims description 2
- 239000004071 soot Substances 0.000 description 11
- 238000001914 filtration Methods 0.000 description 8
- 230000007423 decrease Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
Landscapes
- Processes For Solid Components From Exhaust (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Catalysts (AREA)
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 for a device 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 device manufactured from 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 inner walls between the cells. Such a cell has, for example, a hollow portion having a quadrangular cross section or a regular triangular cross section, and the cross sectional areas of the hollow portions are formed substantially the same on the gas inflow side and the gas outflow side. Further, the opening ratios of the filter on the gas inflow side and the gas outflow side 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, when the size of the entire filter is increased in order to secure a required filtering capacity, that is, a specific surface area of the inner wall of the cell, the risk of cracks occurring in the filter when burning soot increases.
In other words, when the size of the filter is increased, a temperature difference is likely to occur between the parts of the filter during combustion, whereby the stress acting on the filter increases, and the probability of occurrence of cracks increases. Therefore, in order to avoid the occurrence of cracks, it is necessary to ensure a required filtration capacity without increasing the size of the filter.
【０００４】例えば、実開昭５８−９２４０９号公報に
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。[0004] For example, in another conventional filter disclosed in Japanese Unexamined Utility Model Publication No. 58-92409, that the shape of the cells on the gas inlet side to the hexagonal cross section, the shape of the cells of the outflow side in a triangular cross section Thus, the opening ratio on the inflow side is set to be larger than the opening ratio on the outflow side, thereby avoiding an increase in size while securing a required filtering capacity.
【０００５】しかしながら、実開昭５８−９２４０９号
公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, Japanese Utility Model Application Laid-Open No. 58-92409
In the honeycomb filter disclosed in the publication , the cell pitch on the inflow side is relatively small, such as about 1.0 to 2.5 mm, so that the pressure loss when gas passes through the filter cannot be sufficiently reduced. For this reason, the filter is not practical, and 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。The present inventors have conducted various studies on a suitable combination of the opening ratio on the exhaust gas inflow side and the outflow side and the cell pitch on the inflow side. As a result, the opening ratio of the honeycomb filter on the exhaust gas inflow side was found. Is 60 to 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 2.5 to 5.0 mm.
It was found that the pressure loss can be reduced more than before by setting to, and the present invention was completed based on the knowledge.
【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、前記ハニカムフィルタは比表面積が１．７〜２．３
ｃｍ 2 ／ｇの多孔質炭化珪素焼結体で形成され、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２．５〜５．０
mmに設定するようにしたものである。According to the present invention, there is provided a plurality of cells disposed in a casing communicating with an exhaust side of an internal combustion engine and extending in an axial direction, and each cell has at least an exhaust gas inflow. Filter which is opened on one of the side and the exhaust gas outlet side and purifies exhaust gas of the internal combustion engine by the inner wall of each cell, the honeycomb filter has a specific surface area of 1.7 to 2.3.
formed in cm 2 / g porous silicon carbide sintered body, when the exhaust gas inlet side of the opening ratio of the honeycomb filter is 60% to 70%, it sets the opening ratio of the outlet-side to 20-30%, the inflow The cell pitch of each cell opened on the side is 2.5 to 5.0.
It is set to mm.
【０００８】上記のような比表面積、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 specific surface area, the opening ratio on the gas inflow side and the outflow side, and the cell pitch are within the above-mentioned set ranges, the pressure loss when the exhaust gas passes through the filter is low, and the exhaust gas flows into the cell. Can be easily introduced.
In addition, the entire filter can be reduced to a size smaller than half of the conventional size while maintaining a predetermined filtration capacity (specific surface area of the inner wall of the cell). Therefore, the rate of occurrence of cracks is reliably reduced, the filter can be used for a long time, and the whole 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 when the opening ratio on the outflow side is 2%.
If it is less than 0%, the gas passage resistance at the time of inflow and at the time of outflow becomes large. Further, since the inner wall of the cell becomes thicker, the pressure decreases 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 when passing through the filter decreases, but
As the thickness of the inner wall of the cell decreases, the strength of the filter decreases.
【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 cell on the inflow side is 2.
If it is less than 5 mm, the pressure loss increases, and the practicability decreases. On the other hand, if the cell pitch exceeds 5.0 mm, the soot collection rate deteriorates, so that the practicality also decreases.
【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。Each of the cells opened on the inflow side preferably 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.
If it exceeds 5 mm, a predetermined filtration area cannot be secured in the filter, and the practicality is inferior. Further, when the pore diameter is less than 1 μm, the 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 preferable 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 is formed in the above-described shape is that the filters can be further compacted by efficiently arranging the cells, and the filter can have sufficient strength.
【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, it is preferable that the specific surface area of the filter is in the range of 1.7 to 2.3 cm 2 / g. If the specific surface area of the filter is less than 1.7 cm 2 / g, the filter cannot have a predetermined filtering ability. On the other hand, if it exceeds 2.3 cm 2 / g, the pressure loss at the time of inflow can be reduced and the filtration ability can be improved, but on the other hand, the entire filter becomes large and cracks easily 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 of the present invention will be described below in detail 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 includes a casing 2 made of a metal pipe.
Is connected to an exhaust pipe Ea of the internal combustion engine E. In the casing 2, a honeycomb filter 3 for purifying exhaust gas emitted from the internal combustion engine E is provided. Further, a burner 4 for regeneration processing is mounted 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 columnar shape (having a length of 130 mm and a diameter of 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 disposed at one end of each of the hollow portions 5a and 5b on the exhaust gas inflow side and the outflow side. The sealing pieces 6 form cells 7a and 7b that open to either the inflow side or the outflow side. Therefore, the exhaust gas introduced into the cell 7a opening on the inflow side is discharged to the adjacent cell 7b opening on the outflow side via the inner wall 8 located between the cells 7a and 7b. At this time, only the soot is trapped on the inner wall 8 of the cell 7a that opens 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 regeneration processing in the honeycomb filter 3 as described above will be described. Honeycomb filter 3
When a predetermined amount of soot is trapped in the honeycomb filter 3, the burner 4 is ignited, and the heating of the honeycomb filter 3 is started. And
The 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 the present embodiment will be described in detail with reference to FIGS.
As shown in FIG. 2, the hollow portion 5a of each cell 7a opened on the exhaust gas inflow side is formed in a regular hexagonal cross section with a side of about 1.7 mm, and the opening ratio ((hollow) on the exhaust gas inflow side) The total sectional area / filter sectional area) × 100 (%)) is 68%. On the other hand, as shown in FIG. 3, the hollow portion 5b of each cell 7b opened on the exhaust gas outflow side has a side of about 1.45 mm.
Is formed in an equilateral triangular cross section, and the outflow side aperture ratio is 30%.
It 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.
It 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。Further, Serupi' Ji of each cell 7a which opens at the honeycomb filter 3, the inflow side of the present embodiment 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 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、流入側のセル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。Using the honeycomb filter 3 formed as described above in the exhaust gas purifying apparatus 1 for a diesel engine, 10 g of soot was collected, and the above-mentioned regeneration treatment was repeated. The pressure loss before and after soot collection (mma
q) was measured. Further, the material, the shape, and the size (130 mm × 140 mm) of the filter 3 of this embodiment are the same, and the cell pitch of the cells 7 a on the inflow side is 2.4 mm, 5.1.
Comparative Example 1 and Comparative Example 2
And Table 1 shows the results of a comparative study 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 apparent 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 110 mmaq, respectively.
The exhaust gas pressure was 130 mmaq, and a large decrease in the exhaust gas pressure as in Comparative Examples 1 and 2 was not observed in the examples.
【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 above in detail, according to the honeycomb filter of the exhaust gas purifying apparatus of the present invention, it is possible to reduce the size of the entire filter while securing the required filtration performance without increasing the pressure loss. be able to. Therefore, an excellent effect that the rate of occurrence of cracks is reduced and the device can be used for a long time is exhibited.
【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 sectional view showing a mounted state of a honeycomb filter according to an embodiment of 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 is a side view of the honeycomb filter of FIG. 2 taken along line AA.
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。DESCRIPTION OF SYMBOLS 1 Exhaust gas purification device, 2 casing, 3 honeycomb filters, 5a, 5b hollow part, 7a, 7b cell, 8
Inner wall, E internal combustion engine.
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 46/00 302 B01J 35/04 301 F01N 3/02 301 Continuation of the front page (58) Field surveyed (Int. Cl. 7 , DB name) B01D 46/00 302 B01J 35/04 301 F01N 3/02 301
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、前記ハニカムフィルタ（３）は比表面積が１．７〜２．
３ｃｍ 2 ／ｇの多孔質炭化珪素焼結体で形成され、 ハニ
カムフィルタ（３）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（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 a casing (2) communicating with the exhaust side of an internal combustion engine (E) and extending in the axial direction.
b) is opened on at least one of the exhaust gas inflow side and the exhaust gas outflow side, and each cell (7a,
7b) The honeycomb filter (3) for purifying exhaust gas of the internal combustion engine (E) by the inner wall (8) of the honeycomb filter (3) has a specific surface area of 1.7 to 2.0.
The honeycomb filter (3) is formed of a 3 cm 2 / g porous silicon carbide sintered body, and the opening ratio of the honeycomb filter (3) on the exhaust gas inflow side is 60 to
The exhaust system is characterized in that when 70%, the opening ratio on the outflow side is set to 20 to 30%, and the cell pitch of each cell (7a) opening on the inflow side is set to 2.5 to 5.0 mm. Honeycomb filter for gas purification equipment.
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) opened on the inflow side.
Has an inner wall (8) with a 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 thickness of the honeycomb filter is from 50 to 50 m.
（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 for an 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 JPH0568828A (en) | 1993-03-23 |
| JP3130587B2 true 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) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7316722B2 (en) | 2002-09-13 | 2008-01-08 | Ibiden Co., Ltd. | Honeycomb structure |
| US7326270B2 (en) | 2002-09-13 | 2008-02-05 | Ibiden Co., Ltd. | Filter |
| US7556782B2 (en) | 2003-10-20 | 2009-07-07 | Ibiden Co., Ltd. | Honeycomb structured body |
| US7585471B2 (en) | 2004-02-23 | 2009-09-08 | Ibiden Co., Ltd. | Honeycomb structured body and exhaust gas purifying device |
| US7611764B2 (en) | 2003-06-23 | 2009-11-03 | Ibiden Co., Ltd. | Honeycomb structure |
| US8246710B2 (en) | 2003-06-05 | 2012-08-21 | Ibiden Co., Ltd. | Honeycomb structural body |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4094771B2 (en) * | 1999-06-08 | 2008-06-04 | 日本碍子株式会社 | Ceramic filter substrate and method for producing the same |
| JP4471452B2 (en) * | 2000-05-29 | 2010-06-02 | 日本碍子株式会社 | Manufacturing method of filter element |
| US20030041730A1 (en) * | 2001-08-30 | 2003-03-06 | Beall Douglas M. | Honeycomb with varying channel size |
| KR20030061898A (en) * | 2002-01-12 | 2003-07-23 | 주식회사 씨에이테크 | Soot Filtration Filter and Device for Reducing Soot Using the Same |
| JP4369141B2 (en) | 2003-02-18 | 2009-11-18 | 日本碍子株式会社 | Honeycomb filter and exhaust gas purification system |
| KR20060018828A (en) * | 2003-05-06 | 2006-03-02 | 이비덴 가부시키가이샤 | Honeycomb structure body |
| EP1514588B1 (en) | 2003-06-23 | 2007-05-02 | Ibiden Co., Ltd. | Honeycomb structure body |
| JP4439236B2 (en) | 2003-10-23 | 2010-03-24 | イビデン株式会社 | Honeycomb structure |
| JP4600826B2 (en) * | 2005-10-18 | 2010-12-22 | 日立金属株式会社 | Ceramic honeycomb filter |
| DE102017103341A1 (en) * | 2017-02-17 | 2018-08-23 | Umicore Ag & Co. Kg | RUSSIAN PARTICLE FILTER WITH MEMORY CELLS FOR CATALYST |
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1991
- 1991-09-17 JP JP03236573A patent/JP3130587B2/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7316722B2 (en) | 2002-09-13 | 2008-01-08 | Ibiden Co., Ltd. | Honeycomb structure |
| US7326270B2 (en) | 2002-09-13 | 2008-02-05 | Ibiden Co., Ltd. | Filter |
| US7857885B2 (en) | 2002-09-13 | 2010-12-28 | Ibiden Co., Ltd. | Filter |
| US8246710B2 (en) | 2003-06-05 | 2012-08-21 | Ibiden Co., Ltd. | Honeycomb structural body |
| US7611764B2 (en) | 2003-06-23 | 2009-11-03 | Ibiden Co., Ltd. | Honeycomb structure |
| 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 |
| US7585471B2 (en) | 2004-02-23 | 2009-09-08 | Ibiden Co., Ltd. | Honeycomb structured body and exhaust gas purifying device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0568828A (en) | 1993-03-23 |
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