DE2349754A1 - EXHAUST SYSTEM WITH A CATALYST CONVERTER - Google Patents

EXHAUST SYSTEM WITH A CATALYST CONVERTER

Info

Publication number
DE2349754A1
DE2349754A1 DE19732349754 DE2349754A DE2349754A1 DE 2349754 A1 DE2349754 A1 DE 2349754A1 DE 19732349754 DE19732349754 DE 19732349754 DE 2349754 A DE2349754 A DE 2349754A DE 2349754 A1 DE2349754 A1 DE 2349754A1
Authority
DE
Germany
Prior art keywords
exhaust system
housing
catalyst
end plates
catalyst converter
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
DE19732349754
Other languages
German (de)
Inventor
Kenji Masaki
Yukio Miyamori
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor 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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of DE2349754A1 publication Critical patent/DE2349754A1/en
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
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/085—Sulfur or sulfur oxides
    • 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
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • 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
    • F01N13/009—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 two or more separate purifying devices arranged in series
    • F01N13/0097—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 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
    • 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
    • F01N3/2846—Arrangements for mounting catalyst support in housing, e.g. with means for compensating thermal expansion or vibration specially adapted for granular supports, e.g. pellets
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • 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
    • F01N2250/00—Combinations of different methods of purification
    • F01N2250/12—Combinations of different methods of purification absorption or adsorption, and catalytic conversion
    • 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
    • F01N2330/08—Granular material
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/04—Filling or emptying a chamber with granular material
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/30—Removable or rechangeable blocks or cartridges, e.g. for filters
    • 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
    • F01N2510/00—Surface coverings
    • F01N2510/06—Surface coverings for exhaust purification, e.g. catalytic reaction
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/02—Lead
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/06—Zinc
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/08—Phosphorus
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Description

Die Erfindung betrifft eine Auspuffanlage eines mit Bensin und dglο angetriebenen Motors mit einem Katalysatorkonverter und einer stromauf von dem Katalysatorkonverter gelegenen i'atalysator-Gift absorbierenden Vorrichtung=The invention relates to an exhaust system with a Bensin and dglο powered engine with a catalytic converter and a catalyst poison located upstream of the catalyst converter absorbent device =

Bs ist bekanntj, daß die den Motorkraftstoffen„ insbesondere den Benzinen j- zugesetzten Bleiverbindungen giftig auf Katalysatoren von Äfogas~Katalysatorkonvertern wirken0 Ss ist"auch bekannte daß der in den Kraftstoffen„ wie z«B, im Leichtöl? Kerosin und Schweröl enthaltene Schwefel ebenso wie der in Schmieröl enthaltene Phosphor und Sink einen ungünstigen Einfluß auf die Leistungsfähigkeit des Katalysators ausüben. Um die Lebensdauer des sur Behandlung von Verbrennungsprodukten solcher Kraftstoffe dienenden Katalysators zu verlängern„ müssen, die Bleiverbindungen, und anders giftige Materialien vorBs is bekanntj that the motor fuels "in particular gasolines j added lead compounds toxic to catalysts of Äfogas ~ catalyst converters act 0 Ss is" well known that the "such" B, in light oil? Kerosene and heavy fuel oil sulfur contained in the fuels as well as the phosphorus and Sink contained in lubricating oil exert an adverse influence on the performance of the catalyst. to the lifetime "to extend the sur treatment of products of combustion of such fuels must serving catalyst before the lead compounds and other toxic materials

y C? / Q y C? / Q

der Einwirkung des Katalysators unbedingt entfernt werden.the effects of the catalytic converter must be removed.

Die Erfindung besteht darin,, daß die Vorrichtung zur Absorption des Katälysatorgiftes ein Gehäuse mit einer profilierten, umlaufenden Wandung aufweist sowie ein Paar perforierter Stirnplatten, die in das Gehäuse an dem stromauf bzw. stromab gelegenen Gehäuseende eingesetzt sind,, so daß durch die Stirnplatten und die Auslaufende Wandung zwischen, den Stirnplatten eine Kammer gebildet wird,, welche mit Eatalysatorcfift absorbierendem Material angefüllt istf um den Katalysator verseuchende Substanzen zi; absorbieren und die Hach'/srbrennung der Motorabgase zn fcrdsrn.The invention consists in that the device for absorbing the Katälysatorgiftes has a housing with a profiled, circumferential wall and a pair of perforated end plates which are inserted into the housing at the upstream or downstream end of the housing, so that through the end plates and the outlet end wall between the end plates is formed a chamber ,, which absorbent material is filled with Eatalysatorcfift f around the catalyst contaminating substances zi; absorb and Hach '/ srbrennung the engine exhaust gases zn fcrdsrn.

Weitere Merkmale„ Einzelheiten ν.ΐ',ά "ycrtsils der Erfindung er r'ingsbeispiels anhand dar Esicnnuaig= Darin zeigen sFurther features " details ν.ΐ ', ά " ycrtsils of the invention he r'ingsbeispiels based on the Esicnnuaig = show therein s

Fig»I sins schematis3h Gsrgestsllts Schniiiansicht eines ÄUHführungsbsispieis if'lr eina in einem MotorabgassysteH angeordnete erfindurigsgernäßs Vorrichtung zu3 Absorption i^on Katail-satorgift undFig »I sins schematis3h Gsrgestsllts cut view of a ÄUHführungsbsispieis if'lr eina in an engine exhaust system arranged according to the invention device zu3 Absorption i ^ on Katail-satorgift and

Fig«2 eine Schnittansichv- entlang der Linie U-II nachFig. 2 is a sectional view along the line U-II

In cien Figuren ist si
fenden Svlinderwandvin
leitung IG angeordnetIn cien figures si
fenden Svlinderwandvin
line IG arranged

des Pfalles Jl -sbstrÄrat.des Pfalles Jl -sbstrÄrat.

::. l£i:.c;"Iiches Gehäuse 2G mit einer umlaur su erkennen f ^slches in einer Auspuff Ls':.f die von einer nicht dargestellten iitp durch welche des Abgss in Richtung Das Gehäuse 20 ist in sins Kataiysato::. l £ i: .c; "Iiches housing 2G with a umlaur su recognize f ^ slches in an exhaust Ls':. f which from a not shown iitp through which of the exhaust towards the housing 20 is in sins Kataiysato

irsd'S"' '—iiv C££'i?;"6'^£" 3 V"l"-r""""-"*5t I" Ξ". ;.ΐ7£,δί.ΟΓ3Π V/iirsd'S "'' —iiv C ££ 'i?;" 6' ^ £ "3 V" l "-r" "" "-" * 5t I "Ξ". ; .ΐ7 £, δί.ΟΓ3Π V / i

z.B. Kobalt, Mangan, Chrom, Nickel, Vanadium oder Platin trägt. Die Kammer 22 ist ihrerseits in an sich bekannter Weise in zwei Abschnitte 22a und 22b unterteilt, obwohl sie als einheitliche Konstruktion ausgebildet sein kann.e.g. cobalt, manganese, chromium, nickel, vanadium or platinum wearing. The chamber 22 is in turn divided in a manner known per se into two sections 22a and 22b, although they can be designed as a uniform construction.

Der Abschnitt des Gehäuses 20 v/eist daher mit der darin enthaltenen Katalysatorkaminer 22 und dem Katalysatorbett einen katalytischen Konverter auf. An der stromauf und stromab gelegenen Seite der Kammer 24 sind mit Perforationen 28 versehene, entfernbare Stirnplatten 26 angeordnet. Die Perforationen 28 können eine beliebige Form aufweisen, sie sind jedoch, wie in der Fig.2 dargestellt ist, elliptisch ausgebildet und derart zueinander angeordnet, daß sie einen gleichmäßigen Abgasstrom durch den ganzen Stirnplattenbereich der Stirnplatten 26 ermöglichen und ein Verstopfen verhindern, das zu einem Ansteigen des Rückstaudruckes führen würde» Die Stirnplatten 26 sind demontierbar, so daß sie entfernt werden können, wenn die Perforationen 28 mit Ablagerungsmaterial verstopft sind oder wenn die Platten 26 für eine weitere Verwendung zu verschmutzt sind.The portion of the housing 20 is therefore with that contained therein Catalyst chimney 22 and the catalyst bed catalytic converter. On the upstream and downstream On the side of the chamber 24, removable end plates 26 provided with perforations 28 are arranged. The perforations 28 can have any shape, however, as shown in FIG. 2, they are elliptical and so arranged to each other that they have a uniform flow of exhaust gas through the entire end plate area of the end plates 26 and prevent clogging that would lead to an increase in the back pressure »The face plates 26 can be dismantled so that they can be removed when the perforations 28 are clogged with debris or when the panels 26 are closed for further use are dirty.

3nder Kammer 24 ist ein Absorptionsmaterial 40 angeordnet, das die Abgase vorreinigt, bevor sie in die Kammer 22 eintreten, wie dies noch nachfolgend beschrieben werden soll. Es ist ein Einfüllanschluß 30 bzw. ein Auslaßanschluß 32 vorgesehen, durch welche das Absorptionsmaterial 40 hindurch ausgetauscht werden kann, wenn es verbraucht ist. Für die Anschlüsse 30 bzw. 32 sind Verschlüsse 34 und 36 vorgesehen, die in die Kammer 24 hineingreifen, damit das Material 40 in der Kammer dicht eingeschlossen ist.An absorbent material 40 is arranged in the chamber 24, which pre-cleans the exhaust gases before they enter the chamber 22, as will be described below. It a filling connection 30 or an outlet connection 32 is provided, through which the absorbent material 40 can be replaced when it is used up. For the connections 30 and 32, closures 34 and 36 are provided which reach into the chamber 24 so that the material 40 is tightly enclosed in the chamber.

Das Absorpt'ionsmaterial 40 wird vorzugsweise von Aluminium-The absorption material 40 is preferably made of aluminum

409816/0854409816/0854

i - 3 -i - 3 -

oxydkontaktkörpern mit vielen Poren gebildet. Solche A oxydkontaktkörper sind in der Lagep einen beträchtlichen anteil der Giftstoffe zu absorbieren,- weil in den Abgasen als Nebelteilchen enthaltene Bleiverbindungen in Form von Bleibrornit, Bleichlorid, Bleisulfat oder Bleiphosphat wirkungsvoll von dem Material 40 absorbiert werden, Die Behandlung kann weiter dadurch verbessert werden, daß mit Blei reagierende Substanzen, wie Phosphorverbindungen oder Chromverbindungen in den porösen Aluminiumoxvdkontaktkörperri enthalten sind oder auf diesen abgelagert sind. Auf diese Weise werden die von der Kammer 24 im wesentlichen von Bleiverbindungen befreiten Abgase zur Kammer 22 geleitet, wo sie der Kataiysatorwirkung ausgesetzt sind. Wenn irgendeine bekannte Substanz, die mit Schwefel oder Phosphor reagiert, dem Material 40 zugesetzt wird, dann wird Schwefel oder Phosphor ebenfalls absorbiert.oxide contact bodies formed with many pores. Such A oxydkontaktkörper are able p a significant proportion of toxins to absorb, - because being absorbed in the exhaust gases as a mist particles lead compounds contained in the form of Bleibrornit, lead chloride, lead sulfate or lead phosphate effectively from the material 40, the treatment can be improved further characterized that substances which react with lead, such as phosphorus compounds or chromium compounds, are contained in the porous aluminum oxide contact bodies or are deposited on them. In this way, the exhaust gases from the chamber 24, which have essentially been freed from lead compounds, are passed to the chamber 22, where they are exposed to the action of the catalyst. If any known substance that reacts with sulfur or phosphorus is added to material 40, then sulfur or phosphorus will also be absorbed.

Es ist außerdem zweckmäßig, wenn das sich in der Kammer 22 befindliche Katalysatorbett ebenfalls aus porösen Aluminiumoxydkontaktkörpern hergestellt ist» die auf ihrer Oberfläche irgendeinen Katalysator tragen, In einem solchen Fall erfüllt das Katalysatorbett zwei Funktionen, nämlich die ihm eigene Katalysatorwirkung und die das Katalysatorgift absorbierende Wirkung.It is also useful if the catalyst bed located in chamber 22 is also made of porous aluminum oxide contact bodies which have some kind of catalyst on their surface. In such a case, the catalyst bed fulfills two functions, namely its own catalyst effect and the effect of absorbing the catalyst poison .

Das Material 40 besteht aus Kontaktkörpern, die derart bemessen,· sind, daß sie durch den Einfüllanschluß 30 und den Auslaßanschluß 32 hindurchpassen, so daß ein Austausch verbrauchten Materials 40 erleichtert wird,The material 40 consists of contact bodies which are dimensioned in such a way that are to fit through the fill port 30 and the outlet port 32 so that one replacement is consumed Materials 40 is facilitated,

Obwohl bei dem vorbeschriebenen Ausführungsbeispiel gezeigt wurde, daß das Material 4G und das Katalysatorbett in einem zusammenhängend geformten Gehäuse angeordnet sind, das vorzugs-Although it was shown in the above-described embodiment that the material 4G and the catalyst bed in one coherently shaped housing are arranged, the preferred

40S818/08 8 440S818 / 08 8 4

349754349754

weise unter dem Boden der Fahrgastzelle angeordnet ist, können sie auch in voneinander getrennten Gehäusen untergebracht sein? vorausgesetzt, daß das eine Gehäuse für den Katalysator stromab von dem Gehäuse für das Material 40 angeordnet ist. Bei einigen Fahrzeugen tonn dadurch Platz eingespart werden, daß das Gehäuse für das Material 40 innerhalb des Motorraumes angeordnet ist.is arranged under the floor of the passenger compartment, they can also be housed in separate housings be? provided that the one housing for the catalytic converter is arranged downstream of the housing for the material 40. With some vehicles, this saves space, that the housing for the material 40 is arranged within the engine compartment.

- 5- 5th

Claims (1)

P a t e η t a η s ρ r ü ch eP ate η ta η s ρ r ü ch e lc Auspuffanlage eines mit Benzin u.dglt angetriebenen Motors mit einem Katalysatorkonverter und einer stromauf von dem Kätalysatorkonverter gelegenen Katalysator-Gift absorbierenden Vorrichtung, dadurch gekennzeichnet , daß die Vorrichtung ein Gehäuse ;f2Gj mit einer profilierten, umlaufenden Wandung aufweist sowie ein Paar perforierte Stirnplatten (26} t die in des Gehäuse an dem stromauf bzw. stromab gelegenen Gehäuseende eingesetzt sind, so daß durch die Stirnplatten und die umlaufende Wandung zwischen den Stirnplatten eine Kammer (22} gebildet wird, welche mit Kataiysatorgift absorbierendem Material angefüllt ist, um den Katalysator versuchende Substanzen zu absorbieren und die Nachverbrennung der Motorabgase zu fördern,lc exhaust system of a gasoline, etc. t driven motor with a catalyst converter and upstream of the Kätalysatorkonverter situated catalyst poison absorbing device, characterized in that the device comprises a housing; having f 2Gj with a profiled perimeter wall and a pair of perforated end plates (26} t which are inserted into the housing at the upstream or downstream housing end, so that a chamber (22} is formed by the end plates and the circumferential wall between the end plates, which is filled with catalyst poison absorbing material around the catalyst trying to absorb substances and promoting the afterburning of engine exhaust gases, 2, Auspuffanlage nach Anspruch 1, dadurch g e k e η η 2*'eichnet , da£ das Gehäuse (2G) wenigstens einen Anschluß (30,32) mit einem entfernbaren Verschluß (34,36) aufweist.2, exhaust system according to claim 1, characterized g e k e η η 2 * 'calibrated , since the housing (2G) has at least one Connection (30,32) with a removable lock (34,36) having. 3« Auspuffanlage η sich den Ansprüchen I imc: 2, dadurch gekennzeichnet c daß der entfernbare Verschluß ■ i34",36) verstellbar in die Kammer (24) hineinragt.3 «η exhaust system to the claims I IMC: 2, c characterized in that the removable closure ■ i34 ', 36) adjustably extending into the chamber (24). 409816/0854409816/0854 ^" V^Il **^ " V ^ Il ** 4. Auspuffanlage nach wenigstens einem der Ansprüche I bis 3, dadurch gekennzeichnet? daß die perforierten Stirnplatten (26) entfernbar sind»4. Exhaust system according to at least one of claims I to 3, characterized? that the perforated face plates (26) are removable » 5. Auspuffanlage nach wenigstens einem der Ansprüche 1 bis 4, dadurch gekennzeichnet , daß das absorbierende Material (40) aus Aluminiumoxyd in Form von Kontaktkörpern gebildet wird, wobei die Größe der Kontaktkörper
derart bemessen ist, daß diese durch den Anschluß hindurchpassen, jedoch größer als die Perforationen (28) der Stirnplatten (26) sind» 5. Exhaust system according to at least one of claims 1 to 4, characterized in that the absorbent material (40) is formed from aluminum oxide in the form of contact bodies, the size of the contact body
is dimensioned in such a way that they fit through the connection, but are larger than the perforations (28) of the end plates (26) » 6. Auspuffanlage nach wenigstens einem der Ansprüche 1 bis 5, dadurch gekennzei cn net ΰ daß das absorbierende Material wenigstens eine Phosphorverbindung und eine Chromverbindung enthält»6. Exhaust system according to at least one of claims 1 to 5, characterized gekennzei cn net ΰ that the absorbent material contains at least one phosphorus compound and a chromium compound " 7. Auspuffanlage nach wenigstens einem der Ansprüche 1 bis 6, dadurch gekennzei c h η e t „ daß das Gehäuse
mit dem Katalysatorkonverter aus einem Teil gebildet ist.7. Exhaust system according to at least one of claims 1 to 6, characterized gekennzei ch η et "that the housing
is formed from one part with the catalyst converter. 8. Auspuffanlage nach wenigstens einem der Ansprüche 1 bis 6, dadurch gekennzeichnet , daß das Gehäuse
und der Katalysatorkonverter voneinander getrennte Bauteile sind.8. Exhaust system according to at least one of claims 1 to 6, characterized in that the housing
and the catalyst converter are separate components. 409816/0 864409816/0 864 LeerseiteBlank page
DE19732349754 1972-10-06 1973-10-03 EXHAUST SYSTEM WITH A CATALYST CONVERTER Pending DE2349754A1 (en)

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JP47100499A JPS4958212A (en) 1972-10-06 1972-10-06

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JP (1) JPS4958212A (en)
DE (1) DE2349754A1 (en)
FR (1) FR2202229B1 (en)
GB (1) GB1444444A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082262A1 (en) * 1981-11-20 1983-06-29 Degussa Aktiengesellschaft Method for the protection of catalysts for cleaning exhaust gases of combustion engines driven with lead-containing fuels
DE3439891A1 (en) * 1984-10-31 1986-04-30 Anton 8100 Garmisch-Partenkirchen Mangold Exhaust emission control device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5043041A (en) * 1973-08-20 1975-04-18
DE3601790A1 (en) * 1986-01-22 1987-07-30 Gaggenau Werke DEVICE FOR PREVENTING DISPOSALS IN OVENS
JP2548730Y2 (en) * 1991-03-26 1997-09-24 スズキ株式会社 Catalytic converter
US5687565A (en) * 1995-11-29 1997-11-18 Amoco Corporation Control of exhaust emissions from an internal combustion engine
WO2000061265A1 (en) * 1999-04-08 2000-10-19 Southwest Research Institute Guard bed for emission control catalyst
FR2950384A1 (en) * 2009-09-22 2011-03-25 Peugeot Citroen Automobiles Sa Exhaust line for combustion engine in motor vehicle, has non-catalytic trapping device arranged in upstream of catalyst and permitting trapping by absorption of catalytic poison, where trapping device does not contain movable parts
DE102010025804A1 (en) * 2010-07-01 2012-01-05 Bayerische Motoren Werke Aktiengesellschaft Arrangement of a catalyst in an exhaust system
SE538254C2 (en) * 2014-08-14 2016-04-19 Scania Cv Ab Exhaust aftertreatment system including means for capturing catalyst poisons

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0082262A1 (en) * 1981-11-20 1983-06-29 Degussa Aktiengesellschaft Method for the protection of catalysts for cleaning exhaust gases of combustion engines driven with lead-containing fuels
DE3439891A1 (en) * 1984-10-31 1986-04-30 Anton 8100 Garmisch-Partenkirchen Mangold Exhaust emission control device

Also Published As

Publication number Publication date
GB1444444A (en) 1976-07-28
FR2202229B1 (en) 1975-03-21
FR2202229A1 (en) 1974-05-03
JPS4958212A (en) 1974-06-06

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