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DE2222664C3 - Device for detoxifying the exhaust gases from internal combustion engines - Google Patents

Device for detoxifying the exhaust gases from internal combustion engines

Info

Publication number
DE2222664C3
DE2222664C3 DE19722222664 DE2222664A DE2222664C3 DE 2222664 C3 DE2222664 C3 DE 2222664C3 DE 19722222664 DE19722222664 DE 19722222664 DE 2222664 A DE2222664 A DE 2222664A DE 2222664 C3 DE2222664 C3 DE 2222664C3
Authority
DE
Germany
Prior art keywords
catalyst
inner tube
chamber
housing
internal combustion
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
DE19722222664
Other languages
German (de)
Other versions
DE2222664A1 (en
DE2222664B2 (en
Inventor
Andres 8900 Augsburg Santiago
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.)
Arvin Industries Deutschland GmbH
Original Assignee
Zeuna Starker GmbH and Co KG
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 Zeuna Starker GmbH and Co KG filed Critical Zeuna Starker GmbH and Co KG
Priority to DE19722222664 priority Critical patent/DE2222664C3/en
Publication of DE2222664A1 publication Critical patent/DE2222664A1/en
Publication of DE2222664B2 publication Critical patent/DE2222664B2/en
Application granted granted Critical
Publication of DE2222664C3 publication Critical patent/DE2222664C3/en
Expired 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
    • F01N3/10—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
    • 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
    • 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
    • F01N3/2053—By-passing catalytic reactors, e.g. to prevent overheating

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)

Description

Eine Vorrichtung der eingangs erwähnten Art ist gen Körper 2 des Reduktionskatalysators. Zu diesemA device of the type mentioned is gene body 2 of the reduction catalytic converter. To this

durch die deutsche Patentschrift 1 476 515 bekannt. Zweck ist die das Innenrohr 4 im Bereich des Kataly-known from German patent specification 1,476,515. The purpose is that the inner tube 4 in the area of the catalytic converter

Der Erfindung liegt die Aufgabe zugrunde, eine satorkörpers 2 begrenzende Wand selbstverständlichThe invention is based on the object of course, a wall delimiting the satellite body 2

solche Vorrichtung in besonders gedrängter Bau- 55 gasdurchlässig bzw. direkt von der Oberfläche desSuch a device in particularly compact construction 55 gas-permeable or directly from the surface of the

weise, aber mit großem Durchgangsquerschnitt der Katalysatorkörpers 2 gebildet. Nach dem Durchströ-wise, but formed with a large passage cross-section of the catalyst body 2. After the flow

Katalysatorkörper zu schaffen, welche sich auf ein- men des Reduktionskatalysators gelangt das teilweiseTo create a catalyst body, which is located on one of the reduction catalyst, this partially arrives

fache Weise mit einem an Leistungsverlust armen entgiftete, d.h. von Stickoxiden gereinigte Abgas inin multiple ways with an exhaust gas that is detoxified, i.e. cleaned of nitrogen oxides, with a low level of power loss

Bypass kombinieren läßt. den äußeren Ringraum 9, der zwischen der Außen-Bypass can be combined. the outer annular space 9, which is between the outer

Die Erfindung löst diese Aufgabe dadurch, daß 60 umfangsfläche des Katalysatorkörpers 2 des Reduk-The invention solves this problem in that 60 circumferential surface of the catalyst body 2 of the reduction

das perforierte Eintrittsrohr in Strömungsrichtung tionskatalysators und der Innenwand des Gehäuses 1the perforated inlet pipe in the direction of flow tion catalyst and the inner wall of the housing 1

hinter dem ersten Katalysatorkorper in ein Rohr mit gebildet ist. Vom Ringraum 9 aus strömt das Abgasis formed behind the first catalyst body in a tube with. The exhaust gas flows from the annular space 9

gasundurchlässiger Wand übergeht, das mit radialem gemäß den Pfeilen P 3 über den zwischen den beidengas-impermeable wall passes over with the radial according to the arrows P 3 on the between the two

Abstand durch die Bohrung des zweiten Katalysator- Katalysatorkörpern gebildeten Ringraum 10 gemäßDistance through the bore of the second catalyst catalyst bodies formed annular space 10 according to

körpers hindurchgeführt ist und über eine schaltbare 65 den Pfeilen P 4 in den inneren Ringraum 11, welcherbody is passed through and a switchable 65 the arrows P 4 in the inner annular space 11, which

Endklappe in bekannter Weise mit dem Austrittsstut- zwischen der Wand der Innenbohrung des ringförmi-End flap in a known manner with the outlet stub between the wall of the inner bore of the annular

zen in Verbindung steht. gen Katalysatorkörpers 3 des Reduktionskatalysatorszen is connected. gene catalyst body 3 of the reduction catalyst

Durch den erfindungsgemäßen Vorschlag wird und der das Innenrohr 4 begrenzenden gasdichtenThe proposal according to the invention makes and the inner tube 4 delimiting gas-tight

Wand 12 gebildet ist Vom inneren Ringraum 11 aus wird das Abgas erneut umgelenkt und durchströmt den Katalysatorkörper 3 in Richtung der Pfeile PS, also ebenfalls radial. Das gereinigte Abgas wird schließlich im äußeren Ringrzum 13, der den Katalysatorkörper 3 umgibt, gesammelt und gelangt vonWall 12 is formed From the inner annular space 11, the exhaust gas is redirected and flowed through the catalyst body 3 in the direction of the arrows PS, that is also radially. The cleaned exhaust gas is finally in the outer ring of 13, which is the catalyst body 3 surrounds, collected and passed from

dort aus in den Auslaßstutzen 14, den es gemäß Pfeil P 6 verläßt Der äußere Ringraum 13 um den Katalysatorkörper 3 ist mittels der gasdichten Wand 15 gegenüber dem Ringraum 10 abgeschlossen. Der Auslaßsiutzen 14 wie auch das Ende des Strömungskanals 4 münden in die Auspuffleitung 16. there out into the outlet port 14, which it leaves according to arrow P 6 The outer annular space 13 around the The catalyst body 3 is closed off from the annular space 10 by means of the gas-tight wall 15. the The outlet port 14 and the end of the flow channel 4 open into the exhaust line 16.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (4)

eine Kombination von Zweibettkatalysator und By- - . nass geschaffen, bei der infolge der Durchstromung Patentansprüche: Sflalalysatorkörper von innen narh außen eina combination of two-bed catalyst and by- -. Wet created, in which, as a result of the flow, the analyzer body is inserted from the inside, close to the outside 1. Vorrichtung zum Entgiften der Abgase von verhältnismäßig großer D"^^"ngf "^hni" Brennkraftmaschinen, mit Lei in einem gemein- 5 der beiden Katalysatoren1. Device for detoxifying the exhaust gases from relatively large D "^^" n gf "^ hni " internal combustion engines, with Lei in one of the two catalysts samen Gehäuse fluchtend hintereinander an- dialen Durch» ,^ .2Align the entire housing in line with one another through », ^ .2 geordneten, radial durchströmten Katalysatorkör- Strömungsgeschwindigkeit und diedanut.^gordered, radial flow rate through which the catalyst body flows, and the flow rate thereafter. ^ g pern, deren erster ein perforiertes Eintrittsrohr Verweilzeit gewahrleisten eine gute katalytische Wir-pern, the first of which is a perforated inlet pipe, residence time ensures a good catalytic effect umhüllt und von einer ringförmigen Austritts- kung. „^.^ui„cren»m n..encased and by an annular outlet. "^. ^ Ui" cre n » m n .. kammer umgeben ist, die über eine die Strom- i. Im Normalbetneb, also bei f^^T^Tu chamber is surrounded, which has a current i. In normal operation, i.e. at f ^^ T ^ Tu richtung umkehrende Zwischenkammer mit der werden die Katalysatorkorper nacheinander vom Ab-direction reversing intermediate chamber with which the catalyst bodies are successively removed from the zentrischen Eintrittsbohrung des zweiten Kataly- gas durchströmt Wenn in ^^Τ^'11?^"^centric inlet bore of the second catalytic gas flows through if in ^^ Τ ^ '11 ? ^ "^ satorkörpers in Verbinduni steht, der ebenfalls Brennkraftmaschine eine außerordentliche Ldslungs-satorkörpers is in connection, the internal combustion engine is also an extraordinary Ldslungs- von eineV gegenüber der ernten getrennten Aus- steigerung erzielt werden soll, so können die Kataly-is to be achieved separately from the harvest, the catalyst can trittskammer umgeben ist, die mildem Austritts- x5 satoren durch den Bypass umgangen werden. Derstep chamber is surrounded, the mild outlet x 5 sators are bypassed by the bypass. the stutzen in Verbindung steht dadurch ge- Bypass tut auch in Nebenschluß-Anordnung semennozzle is connected by it. Bypass also works in a bypass arrangement kennzeichnet, daß das perforierte Eintritts- Dienst, wenn ein geringerer Entgiftungsgrad aus-indicates that the perforated entry service, if a lower degree of detoxification is rohr (4) in Strömungsrichtung hinter dem ersten reicht; in diesem Fall tragt er zur Schonung des Ka-pipe (4) extends in the direction of flow behind the first; in this case he contributes to the protection of the Katalysatorkörper (2) in ein Rohr mit gasun- talysatormatenals beiCatalyst body (2) in a tube with gas under catalytic converter materials durchlässiger Wand übergeht, das mit radialem »> Weitere Merkmale der Erfindung sind den Unter-permeable wall passes over, the radial »> Further features of the invention are the Abstand durch die Bohrung des zweiten Kataly- ansprächen zu entnehmen.Distance through the hole in the second catalytic converter can be seen. satorkörpers (3) hindurchfeführt ist und über Im Rahmen der Erfindung können auch mehr alssatorkörpers (3) is passed through and over In the context of the invention, more than eine schaltbare Endklappe (6) in bekannter zwei Kaialysatorkörper hintereinander im geme.nsa-a switchable end flap (6) in known two Kaialysatorkkörper one behind the other in the common Weise mit dem Austrittsstutzen (16) in Verbin- men Gehäuse angeordnet sein,Be arranged in connection with the housing in connection with the outlet nozzle (16), dung steht »5 Ein Ausführungsbeispiel der Erfindung ist im fol-dung stands »5 An embodiment of the invention is in the following 2. Vorrichtung nach Anspruch 1, dadurch ge- genden an Hand der Zeichnung beschrieben Es «igt kennzeichnet, daß die ringförmigen Austrittskam- Fig. 1 einen Längsschnitt durch einen Zweibettmern (9, 13) vom Gehäuse (1) radial begrenzt katalysator,2. Device according to claim 1, characterized in that it is described with reference to the drawing indicates that the annular outlet chamber Fig. 1 is a longitudinal section through a two-bed core (9, 13) from the housing (1) radially limited catalytic converter, sind Fig. 2 einen Querschnitt gemäß H-II der Fig. 1.FIG. 2 shows a cross section according to H-II of FIG. 1. 3. Vorrichtung nach Anspruch 1, dadurch ge- 30 Die Fig. 1 und 2 zeigen ein Gehäuse 1 in dessen kennzeichnet, daß die Zwischenkammer (10) von Innerem der Reduktionskatalysator und der Oxtdaden beiden aufeinander zu gerichteten Stirnseiten tionskatalysator durch ringförmige Katalysatorkorbeider Katalysatorkörper (2, 3) axial begrenzt ist. per 2, 3 gebildet sind. Im Bereich der Innenbohrung3. Apparatus according to claim 1, characterized in that 30 Figs. 1 and 2 show a housing 1 in its indicates that the intermediate chamber (10) from inside the reduction catalyst and the Oxtdaden two end faces facing each other tion catalyst through ring-shaped catalyst basket Catalyst body (2, 3) is axially limited. per 2, 3 are formed. In the area of the inner bore der Katalysatorkörper 2, 3 befindet sich das als By-35 pass dienende Innenrohr the catalyst body 2, 3 is located as the By-35 pass serving inner tube 4. Das Innenrohr 4 ist auf4. The inner tube 4 is open der Seite des Abgaseintritts über den Rohrstutzen 5the side of the exhaust gas inlet via the pipe socket 5 mit der von der Brennkraftmaschine kommenden (nicht gezeigten) Abgasleitung verbunden. Das an-connected to the exhaust pipe (not shown) coming from the internal combustion engine. The other Die Erfindung betrifft eine Vorrichtung zum Ent- dere Ende des Innenrohrs 4 ist mittels der Klappe 6, giften der Abgase von Brennkraftmaschinen, mit 40 welche über ein Hebelgeslänge betätigt werden kann, zwei in einem gemeinsamen Gehäuse fluchtend hin- in der mit durchgezogenen Linien gezeichneten Steltereinander angeordneten, radial durchströmten Ka- lung verschlossen. Durch öffnen der Klappe 6 (getalysatorkörpern, deren erster ein perforiertes Ein- strichelt) wird das Innenrohr 4 zum Bypass. Der getrittsrohr umhüllt und von einer ringförmigen Aus- samte Abgasstrom durchläuft das Innenrohr ohne trittskammer umgeben ist, die über eine die Strom- 45 Umlenkung durch die Katalysatorkörper. Im Entgifrichtung umkehrende Zwischenkammer mit der zen- tungsbetrieb findet eine mehrfache Umlenkung und trischen Einirittsbohrung des zweiten Katalysator- Aufteilung des Abgasstroms statt. Der gemäß körpers in Verbindung steht, der ebenfalls von einer Pfeil P 1 über das Innenrohr 4 in das Innere des Gegegenüber der ersten getrennten Austrittskammer um- häuses 1 einlretende Abgasstrom teilt sich bei gegeben ist, die mit dem Austrittsstutzen in Verbindung 50 schlossener Klappe 6 auf und durchströmt gemäß steht. den Pfeilen P2 in radialer Richtung den ringförmi-The invention relates to a device for the end of the inner tube 4 is by means of the flap 6, poison the exhaust gases from internal combustion engines, with 40 which can be operated via a lever length, two in a common housing in alignment with one another in the position drawn with solid lines arranged, radially flowed through duct closed. By opening the flap 6 (analyzer body, the first of which is a perforated dashed line), the inner tube 4 becomes the bypass. The step pipe enveloped and surrounded by a ring-shaped outflow of exhaust gas flows through the inner tube without occurs chamber is surrounded, which has a flow deflection 45 through the catalyst body. In the detox direction reversing intermediate chamber with the centering operation takes place multiple diversions and tric Einirittsbohrung the second catalytic converter division of the exhaust gas flow instead. According to body is in connection, which is also by an arrow P 1 via the inner tube 4 in the interior of the opposite The exhaust gas flow entering the first separate outlet chamber housing 1 splits when given is, the flap 6 closed with the outlet nozzle in connection 50 and flows through according to FIG stands. the arrows P2 in the radial direction the ring-shaped
DE19722222664 1972-05-09 1972-05-09 Device for detoxifying the exhaust gases from internal combustion engines Expired DE2222664C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19722222664 DE2222664C3 (en) 1972-05-09 1972-05-09 Device for detoxifying the exhaust gases from internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722222664 DE2222664C3 (en) 1972-05-09 1972-05-09 Device for detoxifying the exhaust gases from internal combustion engines

Publications (3)

Publication Number Publication Date
DE2222664A1 DE2222664A1 (en) 1973-11-22
DE2222664B2 DE2222664B2 (en) 1974-03-28
DE2222664C3 true DE2222664C3 (en) 1974-10-24

Family

ID=5844471

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722222664 Expired DE2222664C3 (en) 1972-05-09 1972-05-09 Device for detoxifying the exhaust gases from internal combustion engines

Country Status (1)

Country Link
DE (1) DE2222664C3 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2479323B1 (en) * 1980-03-31 1987-03-20 Johnson Matthey Plc ANTI-POLLUTION PROCESS AND DEVICE FOR EXHAUST GAS OF INTERNAL COMBUSTION ENGINE WITH TURBO-COMPRESSOR

Also Published As

Publication number Publication date
DE2222664A1 (en) 1973-11-22
DE2222664B2 (en) 1974-03-28

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977