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
Application number
JP1981167602U
Other languages
Japanese (ja)
Other versions
JPS5872414U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP16760281U priority Critical patent/JPS5872414U/en
Publication of JPS5872414U publication Critical patent/JPS5872414U/en
Application granted granted Critical
Publication of JPS6210422Y2 publication Critical patent/JPS6210422Y2/ja
Granted legal-status Critical Current

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  • 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.

【図面の簡単な説明】[Brief explanation of drawings]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] フイルタ軸線方向に薄肉壁を隔てて互に平行に
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.
JP16760281U 1981-11-12 1981-11-12 Internal heat engine exhaust gas filter Granted JPS5872414U (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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