EP0554499A1 - Soot filter with a ring chamber - Google Patents

Soot filter with a ring chamber Download PDF

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Publication number
EP0554499A1
EP0554499A1 EP92103705A EP92103705A EP0554499A1 EP 0554499 A1 EP0554499 A1 EP 0554499A1 EP 92103705 A EP92103705 A EP 92103705A EP 92103705 A EP92103705 A EP 92103705A EP 0554499 A1 EP0554499 A1 EP 0554499A1
Authority
EP
European Patent Office
Prior art keywords
filter
annular space
exhaust gases
soot
wall
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.)
Granted
Application number
EP92103705A
Other languages
German (de)
French (fr)
Other versions
EP0554499B1 (en
Inventor
Karl-Heinz Dipl.-Ing. Krumme
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.)
ERNST-Apparatebau GmbH and Co
Original Assignee
ERNST-Apparatebau GmbH and Co
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 ERNST-Apparatebau GmbH and Co filed Critical ERNST-Apparatebau GmbH and Co
Priority to DE9219003U priority Critical patent/DE9219003U1/en
Publication of EP0554499A1 publication Critical patent/EP0554499A1/en
Application granted granted Critical
Publication of EP0554499B1 publication Critical patent/EP0554499B1/en
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
    • 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
    • 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
    • F01N3/025—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 fuel burner or by adding fuel to exhaust
    • 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
    • F01N3/033—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 in combination with other devices
    • F01N3/0335—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 in combination with other devices with exhaust silencers in a single housing
    • 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

Definitions

  • the invention relates to a soot filter for diesel engines with a burner which burns off the soot layers deposited on the filter candles, the engine exhaust gases being passed through a tangential inlet into an annular space surrounding the burner, from which they pass into the filter space via the combustion chamber.
  • soot filter In a soot filter, it is known to introduce the exhaust gas of the diesel engine through a tangential inlet into an annular space which surrounds the burner and from which the exhaust gases flow to the filter space.
  • the exhaust gases circulating in the annular space disturb the gases entering through the inlet, so that considerable turbulence is created which increases the overall flow resistance of the soot filter.
  • the object of the invention is to achieve the lowest possible overall flow resistance and high sound attenuation in a soot filter of the type mentioned.
  • This object is achieved in that the area of the annular chamber into which the exhaust gases enter is separated by a wall from the area of the annular chamber into which the exhaust gases pass after the annular chamber has completely flowed through.
  • the soot filter has optimal sound absorbing properties. on the one hand this is due to the fact that the annular space forms a large, uniform calming space which, together with the expansion chamber that follows thereafter, achieves high sound absorption values.
  • the soot filter has a housing 1 with a lateral tangentially arranged inlet 2 and a coaxially arranged outlet 3.
  • the inlet leads into an annular space 4 which coaxially surrounds a burner 5.
  • the cylindrical perforated wall 5b of the combustion chamber 5a is coaxially surrounded by a cylindrical second perforated wall 5c and the annular space 5d is open between two perforated walls towards the expansion chamber 4a.
  • the flame gases emerging from the burner 5 are deflected by a conical guide plate 6, which is located in an expansion chamber 4a. From there, the gases are led into the filter chamber 7, in which a larger number of filter candles 8 extend parallel to one another and axially parallel to the housing 1.
  • the filter candles 8 are depth filters with ceramic windings 9 on perforated metal filter tubes 10.
  • the tubes 10 are closed on the end facing the burner and open with the opposite ends in a collecting space 11, which is surrounded by a silencer 12 and leads to the outlet 3.
  • the exhaust gases of the diesel engine pass through the inlet 2 into the annular space 4 and from there via the combustion chamber 5a into the filter space 7. They flow through the filter space 7 and penetrate the cylindrical walls 8a of the filter candles 8 and then through the inside of the filter candles 8 to flow the collecting space 11 and to the outlet 3.
  • the soot in the exhaust gases settles in the ceramic windings 9 and on the outside as a layer, which is not shown in the drawing.
  • a guide plate 13 is attached tangentially to the cylindrical perforated wall of the combustion chamber 4a.
  • the baffle 13 separates the area 14 of the annular space 4, into which the exhaust gases enter, from the area 15 of the annular space 4, into which the exhaust gases pass after the annular space has completely flowed through.
  • the baffle plate 13 is positioned so obliquely to the impinging flow that the exhaust gas flow is led to the filter chamber 7 or to the expansion chamber 4a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Filtering Materials (AREA)
  • Saccharide Compounds (AREA)

Abstract

The invention relates to a soot filter (1) for diesel engines with a burner (S) which burns off the soot layers deposited on the filter tubes (8), the engine exhaust gases being guided through a tangential inlet (2) into a ring space (4) which surrounds the burner (5) and from which they pass via the combustion chamber (5a) into the filter space (7), the region of the ring space (4) into which the exhaust gases enter being separated by a wall (13) from the region of the ring space (4) into which the exhaust gases pass after passing completely through the ring space. <IMAGE>

Description

Die Erfindung betrifft einen Rußfilter für Dieselmotoren mit einem Brenner, der die auf den Filterkerzen abgesetzten Rußschichten abbrennt, wobei die Motorenabgase durch einen tangentialen Einlaß in einen, den Brenner umgebenden Ringraum geführt werden, von dem sie über die Brennkammer in den Filterraum gelangen.The invention relates to a soot filter for diesel engines with a burner which burns off the soot layers deposited on the filter candles, the engine exhaust gases being passed through a tangential inlet into an annular space surrounding the burner, from which they pass into the filter space via the combustion chamber.

Es ist bekannt, bei einem Rußfilter das Abgas des Dieselmotors durch einen tangentialen Einlaß in einen Ringraum einzuführen, der den Brenner umgibt und von dem die Abgase zum Filterraum strömen. Die im Ringraum kreisenden Abgase stören hierbei die durch den Einlaß eingehenden Gase, so daß erhebliche Verwirbelungen entstehen, die den gesamten Durchströmungswiderstand des Rußfilters erhöhen.In a soot filter, it is known to introduce the exhaust gas of the diesel engine through a tangential inlet into an annular space which surrounds the burner and from which the exhaust gases flow to the filter space. The exhaust gases circulating in the annular space disturb the gases entering through the inlet, so that considerable turbulence is created which increases the overall flow resistance of the soot filter.

Aufgabe der Erfindung ist es, bei einem Rußfilter der eingangs genannten Art einen möglichst niedrigen Gesamtdurchströmungswiderstand und eine hohe Schalldämpfung zu erreichen.The object of the invention is to achieve the lowest possible overall flow resistance and high sound attenuation in a soot filter of the type mentioned.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Bereich der Ringkammer, in den die Abgase eintreten von dem Bereich der Ringkammer, in den die Abgase nach vollständigem Durchströmen der Ringkammer gelangen, durch eine Wand getrennt ist.This object is achieved in that the area of the annular chamber into which the exhaust gases enter is separated by a wall from the area of the annular chamber into which the exhaust gases pass after the annular chamber has completely flowed through.

Durch eine solche Wand, insbesondere durch ein Leitblech wird dafür gesorgt, daß der durch den Einlaß in den Ringraum gelangende Abgasstrom keinen zusätzlichen Verwirbelungen ausgesetzt ist und damit den Ringraum verhältnismäßig ungestört durchströmen kann, um dann spätestens beim Leitblech den Ringraum zu verlassen und zum Filterraum zu gelangen. Damit wird eine gleichmäßige Strömung vor, in und hinter dem Ringraum erreicht, so daß der gesamte Durchströmungswiderstand des Rußfilters wesentlich herabgesetzt wird. Ein solch geringer Durchströmungswiderstand des Gesamtsystems führt zu dem erheblichen Vorteil, daß entsprechend mehr Ruß abgelagert werden kann, da eine dickere Rußschicht aufliegen kann, ehe der Druck zum Durchströmen des Rußfilters nicht mehr ausreicht. Somit kann ein Abbrennen in größeren Zeitabständen erfolgen und die Lebensdauer des Rußfilters ist höher.Through such a wall, in particular through a baffle, it is ensured that the exhaust gas stream entering the annular space through the inlet is not exposed to any additional turbulence and thus can flow through the annular space relatively undisturbed, in order to then leave the annular space at the baffle at the latest and to the filter space reach. This results in a uniform flow in front of, in and behind the annular space, so that the overall flow resistance of the soot filter is significantly reduced. Such a low flow resistance of the overall system leads to the considerable advantage that more soot can be deposited, since a thicker layer of soot can be present before the pressure is no longer sufficient to flow through the soot filter. This means that it can burn off at longer intervals and the service life of the soot filter is longer.

Der Rußfilter hat optimale schalldämpfende Eigenschaften. dies rührt zum einen daher, daß der Ringraum einen großen gleichmäßigen Beruhigumgsraum bildet, der zusammen mit der danach folgenden Expansionskammer hohe Schalldämpfwerte erreicht. Hierzu trägt auch das eingangsseitige Leitblech und die Strömungsteilung durch die zweite Ringkammer bei, die zwischen den zwei zylindrischen Lochblechen besteht.The soot filter has optimal sound absorbing properties. on the one hand this is due to the fact that the annular space forms a large, uniform calming space which, together with the expansion chamber that follows thereafter, achieves high sound absorption values. The inlet-side guide plate and the flow division through the second annular chamber, which exists between the two cylindrical perforated plates, also contribute to this.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen aufgeführt.Advantageous embodiments of the invention are listed in the subclaims.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher beschrieben. Es zeigen:

Figur 1:
Einen axialen Längsschnitt durch den Rußfilter und
Figur 2:
einen axialen Längsschnitt durch das Gehäuse im Bereich des Brenners
Figur 3:
einen Schnitt durch den Rußfilter nach III-III in Figur 1.
An embodiment of the invention is shown in the drawings and will be described in more detail below. Show it:
Figure 1:
An axial longitudinal section through the soot filter and
Figure 2:
an axial longitudinal section through the housing in the area of the burner
Figure 3:
a section through the soot filter according to III-III in Figure 1.

Der Rußfilter weist ein Gehäuse 1 auf, mit einem seitlichen tangential angeordneten Einlaß 2 und einem koaxial angeordnetem Auslaß 3. Der Einlaß führt in einen Ringraum 4, der einen Brenner 5 koaxial umgibt. Die zylindrische Lochwand 5b der Brennkammer 5a ist von einer zylindrischen zweiten Lochwand 5c koaxial umgeben und der Ringraum 5d ist zwischen zwei Lochwänden zur Expansionskammer 4a hin offen.The soot filter has a housing 1 with a lateral tangentially arranged inlet 2 and a coaxially arranged outlet 3. The inlet leads into an annular space 4 which coaxially surrounds a burner 5. The cylindrical perforated wall 5b of the combustion chamber 5a is coaxially surrounded by a cylindrical second perforated wall 5c and the annular space 5d is open between two perforated walls towards the expansion chamber 4a.

Die vom Brenner 5 ausgehenden Flammgase werden durch eine konische Leitplatte 6 umgelenkt, die sich in einer Expansionskammer 4a befindet. Die Gase werden von dort in den Filterraum 7 geführt, in dem sich eine größere Anzahl von Filterkerzen 8 parallel zueinander und Achsparallel zum Gehäuse 1 erstrecken.The flame gases emerging from the burner 5 are deflected by a conical guide plate 6, which is located in an expansion chamber 4a. From there, the gases are led into the filter chamber 7, in which a larger number of filter candles 8 extend parallel to one another and axially parallel to the housing 1.

Die Filterkerzen 8 sind im dargestellten Ausführungsbeispiel Tiefenfilter mit keramischen Wicklungen 9 auf gelochten Metallfilterrohren 10. Die Rohre 10 sind auf dem, dem Brenner zugekehrtem Ende verschlossen und münden mit den gegenüberliegenden Enden in einem Sammelraum 11, der von einem Schalldämpfer 12 umgeben ist und zu dem Auslaß 3 führt.In the exemplary embodiment shown, the filter candles 8 are depth filters with ceramic windings 9 on perforated metal filter tubes 10. The tubes 10 are closed on the end facing the burner and open with the opposite ends in a collecting space 11, which is surrounded by a silencer 12 and leads to the outlet 3.

Die Abgase des Dieselmotors gelangen durch den Einlaß 2 in den Ringraum 4 und von dort über die Brennkammer 5a in den Filterraum 7. Sie durchströmen den Filterraum 7 und durchdringen die zylindrischen Wände 8a der Filterkerzen 8, um danach durch das Innere der Filterkerzen 8 hindurch in den Sammelraum 11 und zum Auslaß 3 zu strömen. Hierbei setzt sich der in den Abgasen befindliche Ruß in den keramischen Wicklungen 9 und an der Außenseite als eine Schicht ab, die in der Zeichnung nicht dargestellt ist.The exhaust gases of the diesel engine pass through the inlet 2 into the annular space 4 and from there via the combustion chamber 5a into the filter space 7. They flow through the filter space 7 and penetrate the cylindrical walls 8a of the filter candles 8 and then through the inside of the filter candles 8 to flow the collecting space 11 and to the outlet 3. Here, the soot in the exhaust gases settles in the ceramic windings 9 and on the outside as a layer, which is not shown in the drawing.

In dem Ringraum 4 ist ein Leitblech 13 tangential zur zylindrischen Lochwand der Brennkammer 4a befestigt. Das Leitblech 13 trennt den Bereich 14 des Ringraums 4, in den die Abgase eintreten, von dem Bereich 15 des Ringraums 4, in den die Abgase nach vollständigem Durchströmen des Ringraums gelangen. Hierbei ist das Leitblech 13 derart schräg zur auftreffenden Strömung gestellt, daß der Abgasstrom zum Filterraum 7 bzw. zur Expansionskammer 4a hingeführt wird.In the annular space 4, a guide plate 13 is attached tangentially to the cylindrical perforated wall of the combustion chamber 4a. The baffle 13 separates the area 14 of the annular space 4, into which the exhaust gases enter, from the area 15 of the annular space 4, into which the exhaust gases pass after the annular space has completely flowed through. Here, the baffle plate 13 is positioned so obliquely to the impinging flow that the exhaust gas flow is led to the filter chamber 7 or to the expansion chamber 4a.

Claims (5)

Rußfilter für Dieselmotoren mit einem Brenner (5), der die auf den Filterkerzen (8) abgesetzten Rußschichten abbrennt, wobei die Motorenabgase durch einen tangentialen Einlaß (2) in einen, den Brenner (5) umgebenden Ringraum (4) geführt werden, von dem sie über die Brennkammer (4a) in den Filterraum (7) gelangen,
dadurch gekennzeichnet, daß der Bereich (4a) des Ringraums (4) in den die Abgase eintreten, von dem Bereich (4b) des Ringraums in den die Abgase nach vollständigem Durchströmen des Ringraums gelangen, durch eine Wand (13) getrennt ist.Soot filter for diesel engines with a burner (5) which burns off the soot layers deposited on the filter candles (8), the engine exhaust gases being passed through a tangential inlet (2) into an annular space (4) surrounding the burner (5), from which they reach the filter chamber (7) via the combustion chamber (4a),
characterized in that the area (4a) of the annular space (4) into which the exhaust gases enter is separated by a wall (13) from the area (4b) of the annular space into which the exhaust gases pass after the annular space has completely flowed through. Rußfilter nach Anspruch 1, dadurch gekennzeichnet, daß die Wand (13) tangential zur zylindrischen Lochwand der Brennkammer (4a) angeordnet ist.Soot filter according to claim 1, characterized in that the wall (13) is arranged tangentially to the cylindrical perforated wall of the combustion chamber (4a). Rußfilter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Wand (13) ein Leitblech ist.Soot filter according to claim 1 or 2, characterized in that the wall (13) is a baffle. Rußfilter nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß das Leitblech (13) derart schräg zur auftreffenden Strömung gestellt ist, daß der Abgasstrom zum Filterraum (7) hingeführt wird.Particulate filter according to claim 2 or 3, characterized in that the guide plate (13) is positioned obliquely to the impinging flow in such a way that the exhaust gas flow is led to the filter chamber (7). Rußfilter nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die zylindrische Lochwand (5b) der Brennkammer (5a) von einer zylindrischen zweiten Lochwand (5c) koaxial umgeben ist und der Ringraum (5d) zwischen den zwei Lochwänden zur Expansionskammer (4a) hin offen ist.Particulate filter according to one of the preceding claims, characterized in that the cylindrical perforated wall (5b) of the combustion chamber (5a) is coaxially surrounded by a cylindrical second perforated wall (5c) and the annular space (5d) between the two perforated walls is open to the expansion chamber (4a) is.
EP92103705A 1992-02-01 1992-03-04 Soot filter with a ring chamber Expired - Lifetime EP0554499B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9219003U DE9219003U1 (en) 1992-02-01 1992-03-04 Baffle in the annulus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4202960 1992-02-01
DE4202960A DE4202960A1 (en) 1992-02-01 1992-02-01 Soot filter with ring space

Publications (2)

Publication Number Publication Date
EP0554499A1 true EP0554499A1 (en) 1993-08-11
EP0554499B1 EP0554499B1 (en) 1996-07-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92103705A Expired - Lifetime EP0554499B1 (en) 1992-02-01 1992-03-04 Soot filter with a ring chamber

Country Status (10)

Country Link
EP (1) EP0554499B1 (en)
JP (1) JP2577849B2 (en)
KR (1) KR930018135A (en)
AT (1) ATE140761T1 (en)
BR (1) BR9203675A (en)
CZ (1) CZ363892A3 (en)
DE (3) DE4202960A1 (en)
GR (1) GR3021024T3 (en)
HU (1) HUT66635A (en)
SK (1) SK363892A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2881793B1 (en) * 2005-02-04 2007-05-11 Melchior Jean F INTERNAL COMBUSTION ALTERNATIVE MOTOR AND METHOD FOR REMOVING BURNER GAS PARTICLES FOR SUCH AN ALTERNATIVE ENGINE
KR100925871B1 (en) * 2008-08-07 2009-11-06 에이치케이엠엔에스(주) Mixing Apparatus for Exhaust gas and Frame

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651524A (en) * 1984-12-24 1987-03-24 Arvin Industries, Inc. Exhaust processor
EP0306743A2 (en) * 1987-09-05 1989-03-15 Deutsches Zentrum für Luft- und Raumfahrt e.V. Soot filter process and soot filter device for a diesel engine
DE4012411A1 (en) * 1990-04-19 1991-10-24 Webasto Ag Fahrzeugtechnik Exhaust-operated filter-regenerating burner - divides gas into equal evenly-distributed currents before combustion chamber inlet

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49133720A (en) * 1973-05-03 1974-12-23
JPS599519B2 (en) * 1981-09-14 1984-03-02 東海カ−ボン株式会社 Manufacturing method for high-grade SIC whiskers
JPS59157521U (en) * 1983-03-28 1984-10-23 マツダ株式会社 Diesel engine exhaust purification device
DE3504122C2 (en) * 1985-02-07 1994-02-03 Kat Tec Ges Fuer Katalysatorte Catalyst for the conversion of hydrocarbons, nitrogen oxides and fuel gases

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4651524A (en) * 1984-12-24 1987-03-24 Arvin Industries, Inc. Exhaust processor
EP0306743A2 (en) * 1987-09-05 1989-03-15 Deutsches Zentrum für Luft- und Raumfahrt e.V. Soot filter process and soot filter device for a diesel engine
DE4012411A1 (en) * 1990-04-19 1991-10-24 Webasto Ag Fahrzeugtechnik Exhaust-operated filter-regenerating burner - divides gas into equal evenly-distributed currents before combustion chamber inlet

Also Published As

Publication number Publication date
HU9203047D0 (en) 1992-12-28
CZ363892A3 (en) 1993-08-11
BR9203675A (en) 1993-08-10
EP0554499B1 (en) 1996-07-24
ATE140761T1 (en) 1996-08-15
DE4202960A1 (en) 1993-08-05
KR930018135A (en) 1993-09-21
DE59206819D1 (en) 1996-08-29
JP2577849B2 (en) 1997-02-05
JPH05263619A (en) 1993-10-12
DE9219003U1 (en) 1997-01-16
SK363892A3 (en) 1995-03-08
HUT66635A (en) 1994-12-28
GR3021024T3 (en) 1996-12-31

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