EP0369267B1 - Abgasreinigungsvorrichtung - Google Patents

Abgasreinigungsvorrichtung Download PDF

Info

Publication number
EP0369267B1
EP0369267B1 EP89120437A EP89120437A EP0369267B1 EP 0369267 B1 EP0369267 B1 EP 0369267B1 EP 89120437 A EP89120437 A EP 89120437A EP 89120437 A EP89120437 A EP 89120437A EP 0369267 B1 EP0369267 B1 EP 0369267B1
Authority
EP
European Patent Office
Prior art keywords
exhaust gas
shrunk
cleaning device
gas cleaning
film
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
Application number
EP89120437A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0369267A2 (de
EP0369267A3 (de
Inventor
Axel Dipl.-Ing. Böhmer
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.)
Leistritz AG
Original Assignee
Leistritz AG
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 Leistritz AG filed Critical Leistritz AG
Publication of EP0369267A2 publication Critical patent/EP0369267A2/de
Publication of EP0369267A3 publication Critical patent/EP0369267A3/de
Application granted granted Critical
Publication of EP0369267B1 publication Critical patent/EP0369267B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01N13/16—Selection of particular materials
    • 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
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series the purifying devices are arranged in a single 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
    • F01N3/2839—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
    • F01N3/2857—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 the mats or gaskets being at least partially made of intumescent material, e.g. unexpanded vermiculite
    • 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
    • F01N2350/00—Arrangements for fitting catalyst support or particle filter element in the housing
    • F01N2350/02—Fitting ceramic monoliths in a metallic housing

Definitions

  • the invention relates to an exhaust gas purification device with a metallic outer housing and metal or ceramic monoliths mounted therein by means of a spring mat, and shielding funnels for the exhaust gas inlet and outlet connections of the outer housing and / or shielding rings arranged between adjacent monoliths (for example EP-A-0 219 636 , Leistritz).
  • such emission control devices are manufactured in such a way that the spring mat is first inserted into a half-shell of the divided outer housing and the inner parts such as monoliths, shielding rings or shielding funnels are inserted thereon, after which the second outer shell of the housing is placed on and connected to the first, usually after the mat has flipped over is welded. Difficulties arise, however, in that an exact positioning is guaranteed, in which the shielding funnels or shielding rings actually bear against the monoliths and no lateral displacement occurs.
  • the invention is therefore based on the object of designing an exhaust gas purification device of the type mentioned at the outset in such a way that assembly can be carried out in a much simpler, more precise and also automated manner.
  • the solution to this problem is provided according to the invention in that the monoliths, shielding funnels and, if appropriate, shielding rings are combined to form an inner package by a preferably transparent shrink film envelope, in particular a shrink tube.
  • the shrink film is simply cut open and the components are again combined in a shrink film with the help of the assembly template and shrink-wrapped. This prevents such Construction errors still occur in the finished, no longer controllable exhaust gas cleaning device and only become noticeable after the first operation in that the entire exhaust gas cleaning device is unusable after a short time, for example because the spring mat is blown out due to inadmissible gaps or the monoliths are damaged due to insufficient spacing.
  • the shrink film consists of a material, for example polyethylene, which burns or decomposes without residue below the operating temperature.
  • the film initially "seeps" over 100 to 150 ° into the spring mat, the spring mat preferably being a so-called swelling mat, i.e. a metal silicate fiber mat with vermiculite grains, which expands when heated, so that a particularly firm storage is achieved in the inner housing. Above 250 ° the infiltrated film with the binder of the swelling mat burns completely residue-free.
  • This combination of the initially shrunk-in inner package with the spring mat to form a shrink-fitted unit initially has the advantage that it is also much easier to store in a two-part outer housing and in this way the shells of the outer housing can be folded together and welded without the There is a risk that the spring mat will get caught between the shells.
  • the two cleaning strands arranged parallel to one another are arranged, each consisting of a shielding funnel 1 on the inlet side, a first monolith 2 arranged in the cold state at a distance corresponding to the temperature range up to the operating temperature, a shielding ring 3 and a second monolith 4, one repeated stepped shielding ring 5, a third monolith 6 and finally a shielding funnel 7, which is to take over the shielding of the exhaust gas outlet of the outer housing.
  • This output-side shielding funnel 7 is also arranged at a distance to form a gap 8 from the monolith 6, which closes only when the operating temperature is reached due to the different expansion of the inner components compared to the outer housing, which does not become so hot.
  • the shielding rings 3 and 5, in contrast to the shielding funnels 1 and 7 consisting of high-temperature-resistant metal in the exemplary embodiment shown, are preferably made of ceramic.
  • the components are first inserted into a shrink tube in an assembly gauge, whereby the assembly gauge guarantees the specified distances without any problems. Immediately afterwards, the components are fixed in position by shrink-fitting the shrink film cover to the inner package shown in Fig.
  • the invention is not restricted to the exemplary embodiment shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
EP89120437A 1988-11-12 1989-11-04 Abgasreinigungsvorrichtung Expired - Lifetime EP0369267B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838426 1988-11-12
DE3838426A DE3838426A1 (de) 1988-11-12 1988-11-12 Abgasreinigungsvorrichtung

Publications (3)

Publication Number Publication Date
EP0369267A2 EP0369267A2 (de) 1990-05-23
EP0369267A3 EP0369267A3 (de) 1991-11-27
EP0369267B1 true EP0369267B1 (de) 1993-09-08

Family

ID=6367056

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89120437A Expired - Lifetime EP0369267B1 (de) 1988-11-12 1989-11-04 Abgasreinigungsvorrichtung

Country Status (3)

Country Link
EP (1) EP0369267B1 (https=)
DE (2) DE3838426A1 (https=)
ES (1) ES2044021T3 (https=)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4024015A1 (de) * 1990-07-28 1992-02-06 Boysen Friedrich Gmbh Co Kg Vorrichtung zur katalytischen reinigung bzw. zerlegung von heissen abgasen
FR2703105B1 (fr) * 1993-03-26 1995-06-16 Ecia Equip Composants Ind Auto Dispositif de purification catalytique des gaz d'echappement d'un moteur, notamment de vehicule automobile.
DE19618656A1 (de) * 1996-05-09 1997-11-13 Leistritz Abgastech Montageverfahren für einen Abgaskatalysator und Lagerungsmatte zur Durchführung dieses Verfahrens
DE10226503B4 (de) * 2001-07-26 2004-02-19 Helsa-Werke Helmut Sandler Gmbh & Co. Kg Filtervorrichtung
DE10150062B4 (de) * 2001-07-26 2005-06-30 Helsa-Werke Helmut Sandler Gmbh & Co. Kg Filtervorrichtung
US6652629B2 (en) 2001-07-26 2003-11-25 Helsa-Werk Helmut Sandler Gmbh & Co. Kg Filter apparatus
FR3082556A1 (fr) * 2018-06-15 2019-12-20 Psa Automobiles Sa Dispositif de purification de gaz de combustion comportant une entretoise thermiquement decomposable

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219636A1 (de) * 1985-09-06 1987-04-29 Leistritz Aktiengesellschaft Abgasreinigungsvorrichtung für Kraftfahrzeuge

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020190A (en) * 1978-05-04 1979-11-14 Ti Silencers Ltd Constructing a catalyst assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0219636A1 (de) * 1985-09-06 1987-04-29 Leistritz Aktiengesellschaft Abgasreinigungsvorrichtung für Kraftfahrzeuge

Also Published As

Publication number Publication date
DE3838426A1 (de) 1990-05-17
DE58905529D1 (de) 1993-10-14
EP0369267A2 (de) 1990-05-23
EP0369267A3 (de) 1991-11-27
ES2044021T3 (es) 1994-01-01
DE3838426C2 (https=) 1990-09-13

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