JPS58199018A - 電気的加熱手段を有する排気ガス微粒子浄化装置 - Google Patents

電気的加熱手段を有する排気ガス微粒子浄化装置

Info

Publication number
JPS58199018A
JPS58199018A JP57083723A JP8372382A JPS58199018A JP S58199018 A JPS58199018 A JP S58199018A JP 57083723 A JP57083723 A JP 57083723A JP 8372382 A JP8372382 A JP 8372382A JP S58199018 A JPS58199018 A JP S58199018A
Authority
JP
Japan
Prior art keywords
exhaust gas
waste gas
filter member
passages
openings
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
Application number
JP57083723A
Other languages
English (en)
Inventor
Yukihisa Takeuchi
幸久 竹内
Masahiro Tomita
正弘 富田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Soken Inc
Original Assignee
Nippon Soken Inc
NipponDenso Co Ltd
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 by Nippon Soken Inc, NipponDenso Co Ltd filed Critical Nippon Soken Inc
Priority to JP57083723A priority Critical patent/JPS58199018A/ja
Priority to US06/495,404 priority patent/US4505726A/en
Publication of JPS58199018A publication Critical patent/JPS58199018A/ja
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/022—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
    • F01N3/0222—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2407—Filter candles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using electric or magnetic heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2330/00—Structure of catalyst support or particle filter
    • F01N2330/06—Ceramic, e.g. monoliths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2390/00—Arrangements for controlling or regulating exhaust apparatus
    • F01N2390/02—Arrangements for controlling or regulating exhaust apparatus using electric components only
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/10—Residue burned
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/30—Exhaust treatment

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 本発明をよ、自動車等の内燃機関から排出される排）も
ガスを浄化するための装置、特にディーヒル′磯関の排
気ガス中のカーボン像粒子を捕集゛ケるｋめのフィルタ
部材と、該フィルタ部材に捕集された童粒子を燃焼す、
るための電気的加熱手段とを備えた排気ガス敞粒子浄化
装置に関するものである。
この柚の装置におけるフィルタ部材として、多孔質の隔
壁で仕切られた互に平行な多数の排気ガスｄ鮎を自し、
これ等通路の排気ガス流入側の開［１を交互に閉鎖する
とともに、排気ガス流人側の開【−１が開放されている
排気ガス通路の排気ガス流出側の開１」を閉鎖したセラ
ミック製ハニカム構造体が提案されている。このフィル
タ部材では内燃機関からの排気ガスは開放された排気ガ
ス通路に流入するが、該通路の末端が閉じられＣいるの
で多孔質の隔壁を横切り、木端が開放された排気ガス通
路より排出逼れ、その間に曽粒子は排気ガス流入側隔壁
の壁面に付看する。しか」１．なから１店面への微粒子
の堆積が進むに一つれ°Ｃフィルタ部材の通気抵抗が次
第に増大１２、遂には目づまりを起すようにな９機関の
出力を低ドさせる。このため、壁面に堆積した鑓粒子を
周期的に除去し、フィルタ能力を再生する必要がある３
、 この再生手段としてフィルタ部材の谷排気ガス通路内あ
るいはフィルタ部材の排気ガス流入側の端面付近に、捕
集倣粒子を燃焼浄化するだめのニクロム線等のヒータ線
を配設することが提案されている。
しかしながらと−メ株Ｕ）場合は自動車の振動寺によつ
′（ヒータ線が短絡したり、フィルタ部材からはが１１
．たりするので、このようなことが起らないように取付
けに際１７て充分な配慮が必要である。
そこで＋発明は収付構逍が間車で、かつフィルタ部材と
一体化されて、はがれが起ることのｌい屯メＣじ一夕を
角する排気ガス減粒子ζφ化装置を提１Ｊｌ−すること
を目的とする。
即ち本発明の排妊ガス煮粒子浄化装置は、排気ガス流入
側端Ｈの開口が交互に閉鎖されたハニーカム＃ｌｉｌ造
体よりなるフィルタ部材の排気ガス流入側の端面に１ｊ
ｉ’ｉｅ＜釣元熱体をスクリーン印刷、蒸膚等により膜
状に形成したことを特徴とする。
本発明の浄化装置においては、発熱体の発熱により排気
ガス通路の上流側開口端付近の微粒Ｆが着火され゛Ｃ燃
焼を開始し、この燃焼による鹸粒子目俸の発熱は排気ガ
ス流により下流側へ伝播され〔燃焼が持続し、すべての
捕集像粒子が燃焼されるのである。
以ト本発明を図示の夾施例により説明する。
第１図に示すようにフィルタ部）ｒＡ’　ｌは円柱状を
１７だセブミツク、例えばコージェライトのハニカム構
造体で、内燃機関の排気管の途中に介設された円部状の
フィルタ部材収納容器（図示Ｖｒ）中に収納される。
フィルタ部材１には第２図に示すように多孔賀の隔壁１
１により仕切られた互に平行な多数の排気ガス通路１２
が繊通せしめられており、通路１２の排気ガス上流側の
開口は交互に端壁１３で閉じられ、上流側が開放された
通路１ｊ！の後流側開口は端壁１４によシ閉じられてい
る。
矢印で示すように微粒子を含む排気ガスの大部分は排気
ガス通路１怠の開放された開口よシ流入し、隔壁１１を
通過して後流が開放された通路１２より出る。そして微
粒子は衝突、拡散等により隔壁１１の壁面に捕集堆積さ
れ排気ガスは浄化される。
さて、このように排気ガス中の微粒子を捕集する上記フ
ィルタ部材１の排気ガス上流側端面たる端壁１３には白
金等よりなる薄膜状電気抵抗発熱体２が形成しである。
上記発熱体２を形成するにはフイμり部材１の排気ガス
上流側端面に白金ペーストをはけ塗りする。この発熱体
２の材質は白金以外に白金−ロジウム、モリブデン、モ
リブデン−マンガン、タングステン、金、銀−パラジウ
ム等通常のプリントヒータに使用されるものでよく、発
熱体２の形成方法もスクリーン印刷、ディップ、蒸着等
が用いられ得る。
フィルタ部材１の隔壁１１に補集された排気ガス微粒子
を燃焼浄化するに杜上記発熱体２にバッテリー（図示せ
ず）より通電する０発熱体記はカーボン微粒子の着火温
度まで上昇し、フィルタ部材１の排気ガス上流側端面近
くの隔壁に捕集された排気ガス微粒子を直接加熱して燃
焼せしめる。燃焼熱は排気ガス流によって隔壁１１の壁
面に沿って下流へ移送され順次壁面に堆積した下流側の
微粒子が燃焼し、フイμり部材１の最後部まで再生が行
なわれる。
上記の如く本発明によれば電気発熱体はフイμり部材に
一体的に形成されているから、ヒータ線を使用した場合
と異なり自動車の振動によって発熱体が脱落したシ短絡
したすするおそれがない。また発熱体を組付ける手間も
省くことができる。さらに上記発熱体はフィルタ部材の
上流側の端面全体に形成しであるから開放された各開口
まわシに付着した微粒子が燃焼し、各通路の後流へと燃
え広がるので微粒子は確実に燃焼除去され、かつフイμ
り部材は未浄化部分が桟ることなく完全に再生される。
第３図は本発明の第２の実施例で、発熱体８をフイμり
部ｖＪ１の排ガス通路の上流側開口部内壁にも形成した
ものである。これにより排気ガス通路の隔壁１１に捕集
された排気ガス微粒子をさらに効率良く確実に着火せし
めることができる。
第４図は本発明の第３の実施例でフィルタ部材１の排気
ガス上流側端面に□形成された上記発熱体２全体をガラ
ス層６で覆って排気ガスによる騙蝕から保護したもので
ある。発明者らの実験ではこれによシ発熱体２の寿命は
約番倍にもなった。なお、ガラスの材質としては耐熱性
があり、熱鯵張率はフィルタ部材１の熱膨彊率に近いも
のが好ましい。
以上の如く、本発明によれば電気ヒータたる電気抵抗発
熱体をフィルタ部材と一体的に形成したのでヒータの脱
落、短絡等のおそれはなく、またヒータ組付けの手間も
省けるとともに排気ガス微粒子の加熱効率も良好である
。
【図面の簡単な説明】
第１図、第２図は本発明の第１の実施例を示すもので、
第１図は一方の端面に発熱体を形成したフィルタ部材の
全体斜視図、第２図は上記フィルタ部材の端面部の縦断
面図、第３図は本発明の第２の実施例におけるフィルタ
部材の端面部の縦断面図、第４図は本発明の第３の実施
例におけるフィルタ部材の端面部の縦断面図である。 １・・・・・・フィルタ部材 １２・・・・・・フィルタ部材の排気ガス通路１３・・
・・−フィルタ部材の排気ガス流入側端面２・・・・・
・電気抵抗発熱体 第１ｒ・１ 叩、　２　ｊ＝” 喰ご　３１ｊ１ ４ ゛・・４パ

Claims (1)

    【特許請求の範囲】
  1. 内燃機関の排気系に排気ガス中の淑粒子を捕集するだめ
    のフィルタ部材を設置するとともに、該フィルタ部材に
    け捕集された倣粒子を燃焼浄化す゛るための電気的加熱
    手段を付設した排気ガス−粒子浄化４ｊｅ置において、
    上記フィルタ部材を多孔質の隔ａｔこより仕切られた互
    に平行な多数の排気ガス油路を有し、これら排気ガス通
    路の排気ガス流入側の開口を交互に閉じるとともに排気
    ガス流入側の開口が開放されている排気ガス通路の排気
    ガス流出側の開口を閉じたセラミックハニカム構造体に
    より構成し、該フィルタ部祠の排気ガス流入側の端面に
    薄膜状の電気抵抗発熱体をＩし成１７たことを特徴とす
    る電気的加熱手段を存する排気力゛ス童粒子浄化装置。
JP57083723A 1982-05-18 1982-05-18 電気的加熱手段を有する排気ガス微粒子浄化装置 Pending JPS58199018A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57083723A JPS58199018A (ja) 1982-05-18 1982-05-18 電気的加熱手段を有する排気ガス微粒子浄化装置
US06/495,404 US4505726A (en) 1982-05-18 1983-05-17 Exhaust gas cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57083723A JPS58199018A (ja) 1982-05-18 1982-05-18 電気的加熱手段を有する排気ガス微粒子浄化装置

Publications (1)

Publication Number Publication Date
JPS58199018A true JPS58199018A (ja) 1983-11-19

Family

ID=13810429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57083723A Pending JPS58199018A (ja) 1982-05-18 1982-05-18 電気的加熱手段を有する排気ガス微粒子浄化装置

Country Status (2)

Country Link
US (1) US4505726A (ja)
JP (1) JPS58199018A (ja)

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