DE102005040919A1 - Particulate filter with device for preventing filter blockage - Google Patents
Particulate filter with device for preventing filter blockage Download PDFInfo
- Publication number
- DE102005040919A1 DE102005040919A1 DE102005040919A DE102005040919A DE102005040919A1 DE 102005040919 A1 DE102005040919 A1 DE 102005040919A1 DE 102005040919 A DE102005040919 A DE 102005040919A DE 102005040919 A DE102005040919 A DE 102005040919A DE 102005040919 A1 DE102005040919 A1 DE 102005040919A1
- Authority
- DE
- Germany
- Prior art keywords
- filter
- particulate filter
- flow channels
- particulate
- layer
- 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.)
- Withdrawn
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
- F01N3/02—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
- F01N3/022—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
- F01N3/0222—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 characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous the structure being monolithic, e.g. honeycombs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0087—Bypass or safety valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
- B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
-
- 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
- F01N3/031—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 having means for by-passing filters, e.g. when clogged or during cold engine start
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
-
- 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
- F01N2330/06—Ceramic, e.g. monoliths
-
- 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
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
- F01N2410/08—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device in case of clogging, e.g. of particle filter
-
- 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
Abstract
Die Erfindung bezieht sich auf ein Partikelfilter, insbesondere für Abgas einer selbstzündenden Verbrennungskraftmaschine mit einem Innenrohr (12) und mit einem Flansch (14) mit Befestigungsöffnungen (16). Es ist ein Filterkörper (30) mit Strömungskanälen (38) vorgesehen, der vom Abgas in Längsrichtung (42) durchströmt wird. Der Filterkörper (30) enthält im Außenumfangsbereich eine Bypass-Schicht (46) mit Strömungskanälen (38).The invention relates to a particle filter, in particular for exhaust gas from a compression-ignition internal combustion engine, having an inner tube (12) and a flange (14) with fastening openings (16). A filter body (30) with flow channels (38) is provided through which the exhaust gas flows in the longitudinal direction (42). The filter body (30) contains a bypass layer (46) with flow channels (38) in the outer circumference area.
Description
Die Erfindung bezieht sich auf ein Partikelfilter, insbesondere einen Partikelfilter für Abgas von selbstzündenden Verbrennungskraftmaschinen, der mit einer Einrichtung zur Vermeidung der Filterverblockung ausgerüstet ist.The The invention relates to a particulate filter, in particular a Particle filter for Exhaust gas of self-igniting Internal combustion engine, with a device for avoidance equipped with filter blocking is.
Aus dem Stand der Technik sind Nachrüstlösungen für Partikelfilter, insbesondere für Dieselpartikelfilter im Kraftfahrzeugbereich bekannt. Diese Systeme können zum Beispiel als CRT®-Systeme (CRT® continuously regenerating trap) ausgebildet werden, die bereits bei Omnibussen im öffentlichen Nahverkehr eingesetzt werden. Diese CRT®-Systeme werden nicht aktiv regeneriert, sondern werden kontinuierlich über den passiven NO2-Effekt regeneriert. Demgegenüber würde eine aktive Regenerierung bedeuten, dass im Motorsteuergerät abgastemperatursteigernde Maßnahmen ausgelöst würden.Retrofitting solutions for particulate filters, in particular for diesel particulate filters in the automotive sector are known from the prior art. These systems can be designed, for example, as CRT ® systems (CRT ® continuously regenerating trap), which are already used in buses in public transport. These CRT ® systems are not actively regenerated, but are continuously regenerated via the passive NO 2 effect. In contrast, active regeneration would mean that exhaust gas temperature-increasing measures would be triggered in the engine control unit.
Bei kontinuierlich den passiven NO2-Effekt nutzenden Systemen, werden die Fahrzeuge überwiegend im Betriebsbereich mit Abgastemperaturen zwischen 250°C bis 450°C betrieben. Sind die Temperaturen niedriger, was zum Beispiel im Stadtverkehr auftretenden häufigen Stop- and Go-Verkehr an der Tagesordnung ist, verblockt der Partikelfilter mit Ruß, so dass das Fahrzeug nicht mehr bewegt werden kann.With systems that continuously use the passive NO 2 effect, the vehicles are operated predominantly in the operating range with exhaust gas temperatures between 250 ° C and 450 ° C. If the temperatures are lower, which is commonplace in frequent stop-and-go traffic in city traffic, for example, the particulate filter blocks with soot so that the vehicle can no longer be moved.
Alternativ zu den CRT®-Systemen werden heute Rußfilterkats (Twin-Tec oder City-Filter) eingesetzt. Bei beiden Lösungen wird dem partikelbeladenen Abgas von selbstzündenden Verbrennungskraftmaschinen – im Gegensatz zum CRT®-System – ein Bypass angeboten, durch welchen das rußbeladene Abgas ungehindert nach außen strömen kann. Daher können diese einen Bypass für das partikelbeladene Abgas darstellenden Systeme unter ungünstigen Randbedingungen, wie sie zum Beispiel im Stadtverkehr auftreten, bei entsprechender Auslegung nicht durch Rußpartikel verblockt werden. Damit liegen die Systemkosten erheblich niedriger, da ein Regenerationsmanagement entfällt.As an alternative to the CRT ® systems today Rußfilterkats (Twin-Tec or city filter) are used. In both solutions, the particle-laden exhaust gas from self-igniting internal combustion engines - in contrast to the CRT ® system - a bypass offered by which the soot-laden exhaust gas can flow freely to the outside. Therefore, these systems, which form a bypass for the particle-laden exhaust gas, can not be blocked by soot particles under unfavorable boundary conditions, as occur, for example, in city traffic. Thus, the system costs are considerably lower, since a regeneration management is eliminated.
Diese Systeme mit einem Bypass für das partikelbeladene Abgas weisen jedoch den Nachteil auf, dass aufgrund des Querschnittes des Bypasses der Filterabscheidegrad solcher Partikelfilter erheblich niedriger liegt.These Systems with a bypass for However, the particle-laden exhaust gas have the disadvantage that due to the cross section of the bypass of the filter separation such particulate filter is considerably lower.
Sowohl das CRT®-System als auch das oben geschilderte Bypass-System werden über den NO2-Effekt regeneriert. Ein Rußabbrand über O2 erfordert Temperaturen die oberhalb von 600°C liegen und lässt sich insbesondere bei einer Unterfluranordnung eines Partikelfilters wie zum Beispiel eines Dieselpartikelfilters an einem Kraftfahrzeug nur nahe des Volllastbetriebszustandes der Verbrennungskraftmaschine realisieren.Both the CRT ® system and the above-described bypass system are regenerated via the NO 2 effect. A Rußabbrand on O 2 requires temperatures above 600 ° C and can be realized especially in an underfloor arrangement of a particulate filter such as a diesel particulate filter on a motor vehicle only near the full load operating condition of the internal combustion engine.
Darstellung der Erfindungpresentation the invention
Aufgabe der vorliegenden Erfindung ist es, einen Partikelfilter bereitzustellen, der eine Bypass-Möglichkeit für das partikelbeladene Abgas aufweist, welche einen regenerativen Rußabbrand nicht oder nur unwesentlich beeinflusst.task the present invention is to provide a particulate filter the one bypass option for the Particulate exhaust having a regenerative Rußabbrand not or only insignificantly influenced.
Erfindungsgemäß wird vorgeschlagen, einen Partikelfilter derart auszubilden, dass der im Wesentlichen zylinderförmig ausgebildete Partikelfilter in seinem Außenumfangsbereich in ringförmig verlaufende aus Strömungskanälen gebildete Bypass-Fläche aufweist, welcher die der Filterung des partikelbeladenen Abgasstromes dienenden Filterkanäle ringförmig umschließt.According to the invention, it is proposed a particulate filter in such a way that the substantially cylindrically trained particle filter in its outer peripheral region in a ring-shaped formed by flow channels Has bypass area, which are used to filter the particle-laden exhaust stream filter channels annular encloses.
Diese Lösung kann eine Verblockung eines Partikelfilters, wie zum Beispiel eines Partikelfilters für Abgas selbstzündender Verbrennungskraftmaschine im Stadtverkehr, wo es zu häufigen Stop- and Go-Situationen kommt, vermeiden. Dem Abgas wird ein Bypass zur Verfügung gestellt, wodurch dieses den erfindungsgemäß vorgeschlagenen Partikelfilter durchströmen kann, ohne einen im Bereich höherer Temperaturen stattfindenden Rußabbrand, sei es durch O2 oder sei es durch NO2, zu behindern.This solution can prevent blocking of a particulate filter, such as a particulate exhaust gas igniting internal combustion engine particulate in urban traffic, where frequent stop and go situations occur. The exhaust gas is provided with a bypass, whereby it can flow through the particulate filter proposed according to the invention, without obstructing a soot burn-off occurring in the region of higher temperatures, be it by O 2 or by NO 2 .
Die erfindungsgemäß vorgeschlagene Bypass-Schicht, welche insbesondere an einem austauschbaren Partikelfilter für Kfz-Nachrüstungen eingesetzt werden kann, liegt in einem hinsichtlich der auftretenden Prozesstemperaturen kälteren Bereich des Partikelfilters. Die Bypass-Schicht, über welche partikelbeladenes Abgas, das Innere des Partikelfilters nicht beeinträchtigend, durch den Partikelfilter geleitet werden kann, strömt in einen hinsichtlich der auftretenden Temperaturen, kälteren Bereich des Partikelfilters. Die im Inneren des Partikelfilters herrschenden, höheren Prozesstemperaturen, die zwischen 300°C bis 450°C liegen, ermöglichen den Rußabbrand im inneren Bereich des Partikelfilters.The proposed according to the invention Bypass layer, which in particular on an exchangeable particle filter for vehicle retrofits can be used, is in a respect of occurring Process temperatures colder Area of the particulate filter. The bypass layer, over which particle-laden Exhaust gas, not interfering with the interior of the particulate filter, can be passed through the particulate filter, flows into one with regard to the temperatures occurring, colder area of the particulate filter. The higher process temperatures prevailing inside the particulate filter, between 300 ° C up to 450 ° C lie, allow the Rußabbrand in the inner area of the particle filter.
Zeichnungdrawing
Anhand der Zeichnung wird die Erfindung nachstehend eingehender beschrieben.Based In the drawings, the invention will be described below in more detail.
Es zeigt:It shows:
In
der Darstellung gemäß
Bei
dem in
Der
Darstellung gemäß
Aus
der Darstellung gemäß
Entsprechend
der Durchmesserdifferenz zwischen dem Durchmesser d2 der
Filtermantelfläche
Die
Bypass-Schicht
Durch
die erfindungsgemäß vorgeschlagene Lösung wird
gewährleistet,
dass der Rußabbrand
im Bereich des Innenrohres
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005040919A DE102005040919A1 (en) | 2005-08-30 | 2005-08-30 | Particulate filter with device for preventing filter blockage |
PCT/EP2006/065763 WO2007025959A1 (en) | 2005-08-30 | 2006-08-29 | Particulate filter with a device for preventing the filter from becoming clogged |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005040919A DE102005040919A1 (en) | 2005-08-30 | 2005-08-30 | Particulate filter with device for preventing filter blockage |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005040919A1 true DE102005040919A1 (en) | 2007-03-08 |
Family
ID=37636077
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102005040919A Withdrawn DE102005040919A1 (en) | 2005-08-30 | 2005-08-30 | Particulate filter with device for preventing filter blockage |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102005040919A1 (en) |
WO (1) | WO2007025959A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100126163A (en) | 2009-12-04 | 2010-12-01 | 주식회사 알란텀 | Exhaust gas filter |
FI20115731A0 (en) * | 2011-07-07 | 2011-07-07 | Ecocat Oy | New cleaning equipment |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4464185A (en) * | 1981-03-07 | 1984-08-07 | Nippon Soken, Inc. | Exhaust gas filter |
JPS62298614A (en) * | 1986-06-19 | 1987-12-25 | Matsushita Electric Ind Co Ltd | Diesel exhaust gas cleaning device |
US6776814B2 (en) * | 2000-03-09 | 2004-08-17 | Fleetguard, Inc. | Dual section exhaust aftertreatment filter and method |
DE10044893A1 (en) * | 2000-09-12 | 2002-03-21 | Volkswagen Ag | Soot filter for continuous regeneration trap of diesel exhaust purification system, includes internal longitudinal bypass |
JP3925154B2 (en) * | 2000-12-25 | 2007-06-06 | 株式会社デンソー | Exhaust gas purification filter |
DE20314408U1 (en) * | 2003-09-15 | 2005-01-20 | Hjs Fahrzeugtechnik Gmbh & Co. Kg | Motor vehicle internal combustion diesel engine exhaust gas particulate filter has housing with exchangeable filter inserts and bypass with low resistance filter |
-
2005
- 2005-08-30 DE DE102005040919A patent/DE102005040919A1/en not_active Withdrawn
-
2006
- 2006-08-29 WO PCT/EP2006/065763 patent/WO2007025959A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2007025959A1 (en) | 2007-03-08 |
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Legal Events
Date | Code | Title | Description |
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8139 | Disposal/non-payment of the annual fee |