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JP2580353Y2 - 自動車用触媒装置 - Google Patents

自動車用触媒装置

Info

Publication number
JP2580353Y2
JP2580353Y2 JP1991078797U JP7879791U JP2580353Y2 JP 2580353 Y2 JP2580353 Y2 JP 2580353Y2 JP 1991078797 U JP1991078797 U JP 1991078797U JP 7879791 U JP7879791 U JP 7879791U JP 2580353 Y2 JP2580353 Y2 JP 2580353Y2
Authority
JP
Japan
Prior art keywords
tubular
frame
catalyst
heat storage
catalyst device
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 - Fee Related
Application number
JP1991078797U
Other languages
English (en)
Other versions
JPH0521121U (ja
Inventor
正佳 臼井
雄三 月出
勝志 鷲巣
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.)
Usui Co Ltd
Original Assignee
Usui 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 Usui Co Ltd filed Critical Usui Co Ltd
Priority to JP1991078797U priority Critical patent/JP2580353Y2/ja
Priority to DE4228267A priority patent/DE4228267C2/de
Priority to US07/938,442 priority patent/US5419876A/en
Priority to GB9218605A priority patent/GB2267234B/en
Publication of JPH0521121U publication Critical patent/JPH0521121U/ja
Application granted granted Critical
Publication of JP2580353Y2 publication Critical patent/JP2580353Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/9454—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific device
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
    • F01N3/2807—Metal other than sintered metal
    • F01N3/281—Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2839—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration
    • F01N3/2853—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration using mats or gaskets between catalyst body and housing
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2882—Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/10—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat accumulator
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/10—Tubes having non-circular cross section
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/18—Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
    • 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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2046—Periodically cooling catalytic reactors
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Toxicology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biomedical Technology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Catalysts (AREA)

Description

【考案の詳細な説明】
【０００１】
【産業上の利用分野】本考案は自動車の排気管の途中に
連結されて外部に放出される排気ガスの浄化を図る触媒
装置の構造の改良に関するものである。
【０００２】
【従来の技術】従来、この種の触媒装置としては種々の
材質、構造によるものが研究、開発され、その多くが実
用に供されている現状にある。
【０００３】
【考案が解決しようとする課題】しかしながら、このよ
うな従来の技術においては、一般に使用される触媒が約
４００℃以上の温度に達して有効視されるものであるこ
とから、機関始動後の、特に冬期、寒冷時等での触媒の
冷えた状態にあって、機能する前記有効温度に達するま
でにかなりの時間の経過を必要とすることとなり、当然
その間に有害ガスの多量（機関停止までの間に発生する
総量の略７０％程度）が放出されることとなった。
【０００４】従ってその対応策として触媒への機能する
有効温度を出来るだけ早急に得るため、例えばプリキャ
タライザーとして機関に近傍して取付けるようにしたも
の等があるが、未だ充分に満足し得ない問題があった。
【０００５】本考案は従来技術の有する前記問題に鑑み
てなされたものであり、特に触媒を担持した包持体の周
りに蓄熱材を充填、介在した構造により、排気熱による
該蓄熱材での蓄熱保温効果によって比較的長時間に亘り
触媒を保温して有効温度に維持せしめ、その後の機関始
動にあってその直後から効果的に浄化機能を発揮するこ
とのできる自動車用触媒装置を提案することを目的とす
るものである。
【０００６】
【課題を解決するための手段】本考案は上記目的を達成
するため、薄肉金属材による波板の単体、もしくは波板
と平板との重合体を螺旋状に巻回し、且つ両側端部に設
けた排気ガスの流通路に連結する流入口と流出口とに連
通して前記金属材表面に触媒を担持した筒管状包持体の
外側に、蓄熱材を充填、介在した筒状枠体を密閉状に被
着して設け、更に該筒上枠体の外側に真空層もしくは空
間層を保持して密閉、固定した枠体を被着して二重壁に
構成した自動車用触媒装置を要旨とするものであり、更
に前記筒管状包持体を複数個並設し、相互の周面の間に
蓄熱材を充填、介在した筒状枠体を密閉状に被着して形
成するものである。
【０００７】
【作用】本考案はこのように構成されているため、機関
運転中の排気熱を蓄熱材によって効果的に蓄熱、保温す
ることとなり、機関停止後も比較的長時間に亘って触媒
を保温して有効温度に維持せしめることができ、従って
その後の機関の再始動時にあっても触媒物質が活性温度
以上にあることにより機関再始動時に発生する最初の排
気ガスから効果的に浄化するよう機能せしめることとな
り、同時に包持体での螺旋状の巻回のなす波面構造とし
たため広い接触面積が得られ排気ガスの浄化機能を一層
効果的となすこととなる。
【０００８】
【実施例】以下、本考案の実施例を図面に基づいて説明
すれば、図１は本考案の自動車用触媒装置の縦断面図、
図２は本考案に係る筒管状包持体の各実施例を示す断面
図で、（ａ）は図１Ａ−Ａ線の断面図、（ｂ）は他の実
施例の要部拡大断面図、図３は他の実施例に係る図１相
当図、図４は更に他の実施例に係る図１相当図であっ
て、（１）は触媒を担持した単数（図１参照）或いは複
数個を並設（図３、図４参照）した筒管状包持体であ
り、２０重量％Ｃｒ、５重量％Ａｌ、残部Ｆｅからなる
耐熱鋼等からなる薄肉金属材による波板の単体（図２
（ａ）参照）、もしくは波板と平板との重合体を螺旋状
に巻回（図２（ｂ）参照）し、且つ両側部に排気管（図
示せず）と連結する取付けフランジ壁（９）（９１）を
設けて図１および図３に図示するように軸芯部、もしく
は図４に図示するように両側部の端部附近に排気ガスの
流通路に介装して流入口（２）と流出口（３）とを有し
て形成するものである。また（４）は筒状枠体であり、
前記包持体（１）の外側との間に蓄熱材（５）を充填、
介在して密閉状に被着してなるものである。さらに
（６）は筒状枠体（４）の外側に真空層もしくは空間層
（７）を保持して断熱効果をも備えて密閉、固定して二
重壁に被着した枠体であり、（８）（８１）は筒状枠体
（４）内部での仕切壁である。尚図中実線による矢印は
排気ガスの流れの方向を示すものである。
【０００９】
【考案の効果】以上説明したように本考案による自動車
用触媒装置は、特に触媒を担持した包持体（１）の周り
に蓄熱材（５）を充填、介在せしめ、且つ該包持体の螺
旋状の巻回のなす波面構造とにより、機関運転中の排気
熱を蓄熱材（５）での効果的な蓄熱、保温によって、機
関停止後も比較的長時間に亘って触媒を保温して有効温
度に維持することができ、その後の機関の再始動時にあ
っても触媒物質の活性温度以上にあることにより機関再
始動時に発生する最初の排気ガスから効果的に浄化する
よう機能し、更に内部からの放熱を抑制した蓄熱、保温
効果に加えて前記枠体（６）内での真空層もしくは空間
層（７）による外部からの断熱効果による触媒での保温
によって、排気ガスの浄化機能を一層効果的に促進する
ことができる極めて有用な自動車用触媒装置である。
【図面の簡単な説明】
【図１】本考案の自動車用触媒装置の一実施例の縦断面
図である。
【図２】本考案に係る筒管状包持体の各実施例を示す断
面図で、（ａ）は図１Ａ−Ａ線の断面図、（ｂ）は他の
実施例の要部拡大断面図である。
【図３】本考案の他の実施例に係る図１相当図である。
【図４】本考案の更に他の実施例に係る図１相当図であ
る。
【符号の説明】
１ 包持体 ２ 流入口 ３ 流出口 ４ 筒状枠体 ５ 蓄熱材 ６ 枠体 ７ 真空層もしくは空間層
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F01N 3/20 - 3/28

Claims (2)

    (57)【実用新案登録請求の範囲】
  1. 【請求項１】 薄肉金属材による波板の単体、もしくは
    波板と平板との重合体を螺旋状に巻回し、且つ両側端部
    に設けた排気ガスの流通路に連結する流入口（２）と流
    出口（３）とに連通して前記金属材表面に触媒を担持し
    た筒管状包持体（１）の外側に、蓄熱材（５）を充填、
    介在した筒状枠体（４）を密閉状に被着して設け、更に
    該筒状枠体の外側に真空層もしくは空間層（７）を保持
    して密閉、固定した枠体（６）を被着して二重壁に構成
    したことを特徴とする自動車用触媒装置。
  2. 【請求項２】 前記筒管状包持体（１）を複数個並設
    し、相互の周面の間に蓄熱材（５）を充填、介在した筒
    状枠体（４）を密閉状に被着して形成したことを特徴と
    する請求項１記載の自動車用触媒装置。
JP1991078797U 1991-09-03 1991-09-03 自動車用触媒装置 Expired - Fee Related JP2580353Y2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP1991078797U JP2580353Y2 (ja) 1991-09-03 1991-09-03 自動車用触媒装置
DE4228267A DE4228267C2 (de) 1991-09-03 1992-08-31 Vorrichtung zur katalytischen Reinigung von Autoabgas
US07/938,442 US5419876A (en) 1991-09-03 1992-08-31 Device for the catalytic purification of automotive exhaust gas
GB9218605A GB2267234B (en) 1991-09-03 1992-09-03 Device for the catalytic purification of automotive exhaust gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1991078797U JP2580353Y2 (ja) 1991-09-03 1991-09-03 自動車用触媒装置

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Also Published As

Publication number Publication date
GB2267234A8 (en) 1993-12-01
US5419876A (en) 1995-05-30
DE4228267A1 (de) 1993-03-18
GB9218605D0 (en) 1992-10-21
GB2267234B (en) 1996-01-10
JPH0521121U (ja) 1993-03-19
DE4228267C2 (de) 1996-12-12
GB2267234A (en) 1993-12-01

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