JPS6210422Y2 - - Google Patents
Info
- Publication number
- JPS6210422Y2 JPS6210422Y2 JP1981167602U JP16760281U JPS6210422Y2 JP S6210422 Y2 JPS6210422 Y2 JP S6210422Y2 JP 1981167602 U JP1981167602 U JP 1981167602U JP 16760281 U JP16760281 U JP 16760281U JP S6210422 Y2 JPS6210422 Y2 JP S6210422Y2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- exhaust gas
- cell group
- cell
- thin wall
- 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
Links
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 239000000919 ceramic 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
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Landscapes
- Filtering Of Dispersed Particles In Gases (AREA)
Description
【考案の詳細な説明】
本考案は内燃機関の排気ガスフイルタに関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an exhaust gas filter for an internal combustion engine.
デイーゼル機関の排気ガス中にはカーボン、炭
化水素、金属粉、硫酸塩並びに硫黄等からなる微
粒子が含まれており、これらの微粒子が大気に放
出されると大気汚染の問題をひき起こす。従つて
これらの微粒子を捕集するために従来より機関排
気通路内にフイルタを挿入してこのフイルタによ
り微粒子を捕集するようにしている。第１図から
第５図は従来のフイルタの一例を示している。第
１図を参照すると、１はデイーゼル機関本体、２
は排気マニホルド、３は排気マニホルド２に連結
されたフイルタケーシング、４はケーシング３内
に挿入されたフイルタを示す。このフイルタ４の
外周面とケーシング３の内周面間には排気ガスの
吹き抜けを防止するためにシール部材５並びにス
チールウール６等が挿入されている。第２図から
第５図に示すようにフイルタ４はフイルタ軸線方
向に薄肉壁７を隔てて互に平行に延びる多数個の
セル８ａ，８ｂからなるハニカム構造を有する。
第３図並びに第４図に示すように各セル８ａ，８
ｂは正方形断面形状を有し、更に第５図からわか
るようにセルは第１セル群８ａと第２セル群８ｂ
とに分割される。第１セル群のセル８ａはその後
方開口部が栓９ａによつて閉塞され、第２セル群
のセル８ｂはその前方開口部が栓９ｂによつて閉
塞される。なお、第２図から第４図において栓９
ａ，９ｂは鎖線で示してある。第１セル群の各セ
ル８ａの前方開口部からセル８ａ内に流入した排
気ガスは第５図において矢印で示すように多孔質
セラミツクからなる薄肉壁７を通過して隣接する
第２セル群のセル８ｂ内に流入し、次いでセル８
ｂの後方開口部から流出する。排気ガス中に含ま
れる微粒子は排気ガスが薄肉壁７内を通過する際
に薄肉壁７により捕集される。この捕集された微
粒子は例えばフイルタ４をヒーター等により周期
的に加熱することにより燃焼除去される。 Exhaust gas from diesel engines contains fine particles consisting of carbon, hydrocarbons, metal powder, sulfate, sulfur, etc., and when these fine particles are released into the atmosphere, they cause air pollution problems. Therefore, in order to collect these particulates, a filter is conventionally inserted into the engine exhaust passage and the particulates are collected by this filter. 1 to 5 show an example of a conventional filter. Referring to Figure 1, 1 is the diesel engine body, 2
3 indicates an exhaust manifold, 3 indicates a filter casing connected to the exhaust manifold 2, and 4 indicates a filter inserted into the casing 3. A seal member 5, steel wool 6, etc. are inserted between the outer peripheral surface of the filter 4 and the inner peripheral surface of the casing 3 to prevent exhaust gas from blowing through. As shown in FIGS. 2 to 5, the filter 4 has a honeycomb structure consisting of a large number of cells 8a and 8b extending parallel to each other with a thin wall 7 in between in the axial direction of the filter.
As shown in FIGS. 3 and 4, each cell 8a, 8
b has a square cross-sectional shape, and as can be seen from FIG. 5, the cells are a first cell group 8a and a second cell group 8b.
It is divided into The rear openings of the cells 8a of the first cell group are closed by plugs 9a, and the front openings of the cells 8b of the second cell group are closed by plugs 9b. In addition, in FIGS. 2 to 4, the stopper 9
a and 9b are indicated by chain lines. The exhaust gas flowing into the cell 8a from the front opening of each cell 8a of the first cell group passes through the thin wall 7 made of porous ceramic as shown by the arrow in FIG. flows into cell 8b and then into cell 8
It flows out from the rear opening of b. Particulates contained in the exhaust gas are collected by the thin wall 7 when the exhaust gas passes through the thin wall 7. The collected fine particles are burned and removed, for example, by periodically heating the filter 4 with a heater or the like.
しかしながらエンジンオイル中に含まれるＰ，
Ca，Ba等が排気ガス中に混入すると不燃性の
P2O5，CaO，BaOが形成され、これらの不燃成
分がフイルタ４内に蓄積してフイルタ４の目詰り
を発生するという問題がある。更に、燃料中に含
まれる硫黄がCaOと反応してCaSO4となり、この
CaSO4がフイルタ４内に蓄積されてフイルタ４の
寿命を短かくしてしまうという問題がある。 However, P contained in engine oil,
If Ca, Ba, etc. are mixed into the exhaust gas, it will become non-flammable.
There is a problem that P 2 O 5 , CaO, and BaO are formed, and these noncombustible components accumulate in the filter 4 and cause the filter 4 to become clogged. Furthermore, the sulfur contained in the fuel reacts with CaO to form CaSO4 , which
There is a problem in that CaSO 4 accumulates in the filter 4 and shortens the life of the filter 4.
本考案はフイルタの目詰りを阻止すると共にフ
イルタの寿命を延ばすようにしたフイルタ構造を
提供することにある。 SUMMARY OF THE INVENTION The object of the present invention is to provide a filter structure that prevents filter clogging and extends the life of the filter.
以下、添附図面を参照して本考案を詳細に説明
する。 Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
第６図は本考案によるフイルタ４を第５図と同
様に示した側面断面図であり、第６図において第
２図から第５図と同様な構成要素は同一の符号で
示す。第６図に示すフイルタ４は平均細孔径30
μ、気孔率48％のコーデイライトから形成されて
おり、薄肉壁７の厚さは0.3mmである。また、各
栓９ａ，９ｂは例えばコーデイライトから通気不
能に形成されている。第６図に示されるように各
栓９ａには直径0.5mm程度の小径の貫通孔１０が
形成され、各栓９ｂにも直径0.5mm程度の小径の
貫通孔１１が形成される。 FIG. 6 is a side sectional view of the filter 4 according to the present invention, similar to FIG. 5, and in FIG. 6, the same components as in FIGS. 2 to 5 are designated by the same reference numerals. The filter 4 shown in Figure 6 has an average pore diameter of 30
It is made of cordierite with a porosity of 48%, and the thickness of the thin wall 7 is 0.3 mm. Further, each of the plugs 9a and 9b is made of cordierite, for example, so as to prevent ventilation. As shown in FIG. 6, each stopper 9a is formed with a small through hole 10 of about 0.5 mm in diameter, and each stopper 9b is also formed with a small through hole 11 of about 0.5 mm in diameter.
排気ガスの大部分は第１セル群の各セル８ａの
前方開口部から各セル８ａ内に流入し、少量の排
気ガスが栓９ｂに形成された貫通孔１１を通つて
第２セル群の各セル８ｂ内に流入する。各セル８
ａ内に流入した排気ガスの大部分は薄肉壁７を通
つてセル８ｂ内に流入し、このとき排気ガス中に
含まれる微粒子が薄肉壁７内に捕集される。一
方、排気ガス中に灰分としてCaO，BaO，
CaSO4，BaSO4或いはそれらの化合物が含まれて
いる場合、これらの化合物はカーボン等に比べて
粒径が大きなために薄肉壁７の細孔内に浸入しず
らく、慣性によつてセル８ａ内を下流側に向けて
流動し、次いで栓９ａに形成された貫通孔１０を
通つて外部に放出される。従つて薄肉壁７に蓄積
するCaO，BaO，CaSO4，BaSO4等の量を減少で
き、斯くして薄肉壁がCaO，BaO，CaSO4，
BaSO4等によつて目詰りするのを抑制することが
できる。第７図に示す実施例は栓９ａに形成され
た貫通孔１０を上流に向けて拡開した円錐状に形
成したものであつて、排気ガス中に含まれる
CaO，BaO，CaSO4，BaSO4等を貫通孔１０から
排出しやすくしたものである。なお、栓９ｂに形
成した貫通孔１１は薄肉壁７が目詰りした場合に
おいても排気ガスが流通できるようにするために
設けられたものである。 Most of the exhaust gas flows into each cell 8a from the front opening of each cell 8a of the first cell group, and a small amount of exhaust gas flows into each cell 8a of the second cell group through the through hole 11 formed in the plug 9b. It flows into the cell 8b. each cell 8
Most of the exhaust gas that has flowed into the cell 8b flows through the thin wall 7 into the cell 8b, and at this time, particulates contained in the exhaust gas are collected within the thin wall 7. On the other hand, as ash in the exhaust gas, CaO, BaO,
When CaSO 4 , BaSO 4 or their compounds are contained, these compounds have a larger particle size than carbon, etc., so they are difficult to penetrate into the pores of the thin wall 7, and due to inertia, the cells 8a The liquid flows inside towards the downstream side and is then discharged to the outside through the through hole 10 formed in the stopper 9a. Therefore, the amount of CaO, BaO, CaSO 4 , BaSO 4 , etc. that accumulates on the thin wall 7 can be reduced, and thus the thin wall can contain CaO, BaO, CaSO 4 , etc.
Clogging caused by BaSO 4 etc. can be suppressed. In the embodiment shown in FIG. 7, the through hole 10 formed in the plug 9a is formed into a conical shape that expands toward the upstream side, and the through hole 10 is formed in a conical shape that expands toward the upstream.
This allows CaO, BaO, CaSO 4 , BaSO 4 , etc. to be easily discharged from the through hole 10. The through hole 11 formed in the plug 9b is provided to allow exhaust gas to flow even if the thin wall 7 becomes clogged.
以上述べたように本考案によれば第１セル群の
後方開口端を密閉する栓に貫通孔を形成すること
によつて排気ガス中に含まれる不燃成分CaO，
BaO，CaSO4，BaSO4等によりフイルタの薄肉壁
が目詰りを生ずるのを阻止することができる。更
に、燃料中に含まれる硫黄がCaOと反応して
CaSO4となつてもこのCaSO4も栓に形成された貫
通孔を通つて排出されるのでフイルタの寿命を延
ばすことができる。 As described above, according to the present invention, by forming a through hole in the plug that seals the rear open end of the first cell group, the non-flammable component CaO contained in the exhaust gas can be removed.
It is possible to prevent the thin wall of the filter from clogging with BaO, CaSO 4 , BaSO 4 , etc. Furthermore, the sulfur contained in the fuel reacts with CaO.
Even if it becomes CaSO 4 , this CaSO 4 is also discharged through the through hole formed in the stopper, so the life of the filter can be extended.
第１図は機関排気系の全体図、第２図は従来の
フイルタの斜視図、第３図は第１図のＡ−Ａ線に
沿つてみた従来のフイルタ端面の一部の側面図、
第４図は第１図のＢ−Ｂ線に沿つてみた従来のフ
イルタ端面の一部の側面図、第５図は従来のフイ
ルタの軸断面図、第６図は本考案によるフイルタ
の側面断面図、第７図は本考案によるフイルタの
別の実施例の側面断面図である。
４……フイルタ、７……薄肉壁、８ａ，８ｂ…
…セル、９ａ，９ｂ……栓、１０，１１……貫通
孔。
FIG. 1 is an overall view of the engine exhaust system, FIG. 2 is a perspective view of a conventional filter, and FIG. 3 is a side view of part of the end face of a conventional filter taken along line A-A in FIG. 1.
Fig. 4 is a side view of a part of the end face of a conventional filter taken along line B-B in Fig. 1, Fig. 5 is an axial sectional view of the conventional filter, and Fig. 6 is a side sectional view of the filter according to the present invention. 7 are side sectional views of another embodiment of the filter according to the present invention. 4... Filter, 7... Thin wall, 8a, 8b...
...Cell, 9a, 9b...Plug, 10, 11...Through hole.
Claims (1)
延びる多数個のセルからなるハニカム構造を有
し、該セルを第１セル群と第２セル群に２分割し
て該第１セル群の後端開口部を密閉すると共に第
２セル群の前端開口部を密閉するようにした排気
ガスフイルタにおいて、上記第１セル群の後端開
口部を密閉する栓内に排気ガスが流通可能な小径
の貫通孔を形成した内燃機関の排気ガスフイル
タ。 The filter has a honeycomb structure consisting of a large number of cells extending parallel to each other across thin walls in the axial direction of the filter, and the cells are divided into a first cell group and a second cell group. In an exhaust gas filter that seals an end opening and also seals a front end opening of a second cell group, a small-diameter penetration that allows exhaust gas to flow into a stopper that seals a rear end opening of the first cell group. Internal combustion engine exhaust gas filter with holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16760281U JPS5872414U (en) | 1981-11-12 | 1981-11-12 | Internal heat engine exhaust gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16760281U JPS5872414U (en) | 1981-11-12 | 1981-11-12 | Internal heat engine exhaust gas filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5872414U JPS5872414U (en) | 1983-05-17 |
| JPS6210422Y2 true JPS6210422Y2 (en) | 1987-03-11 |
Family
ID=29959683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16760281U Granted JPS5872414U (en) | 1981-11-12 | 1981-11-12 | Internal heat engine exhaust gas filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5872414U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6898930B2 (en) | 2001-08-08 | 2005-05-31 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification device |
| JP2007289926A (en) * | 2006-03-31 | 2007-11-08 | Ngk Insulators Ltd | Honeycomb structure and honeycomb catalytic body |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH059450Y2 (en) * | 1984-09-27 | 1993-03-09 | ||
| JPH0511293Y2 (en) * | 1986-07-30 | 1993-03-19 | ||
| FR2769517B1 (en) * | 1997-10-13 | 1999-11-12 | Francis Al Dullien | CROSSLINKED FOAM SPONGIOUS TYPE SEPARATOR |
| JP3925154B2 (en) | 2000-12-25 | 2007-06-06 | 株式会社デンソー | Exhaust gas purification filter |
| JP4172986B2 (en) | 2002-10-10 | 2008-10-29 | 日本碍子株式会社 | Honeycomb structure, manufacturing method thereof, and exhaust gas purification system using the honeycomb structure |
| JP5219741B2 (en) * | 2008-10-31 | 2013-06-26 | 日本碍子株式会社 | Honeycomb structure and honeycomb catalyst body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696109A (en) * | 1979-12-12 | 1981-08-04 | Gen Motors Corp | Trap for particle in diesel engine exhaust |
-
1981
- 1981-11-12 JP JP16760281U patent/JPS5872414U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5696109A (en) * | 1979-12-12 | 1981-08-04 | Gen Motors Corp | Trap for particle in diesel engine exhaust |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6898930B2 (en) | 2001-08-08 | 2005-05-31 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification device |
| JP2007289926A (en) * | 2006-03-31 | 2007-11-08 | Ngk Insulators Ltd | Honeycomb structure and honeycomb catalytic body |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5872414U (en) | 1983-05-17 |
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