DE102011102218A1 - Method for cleaning particulate filters e.g. exhaust particulate filters, in diesel engine of motor vehicle, involves forming nitrogen compound as main component, to act on catalytically active surface, and heating cleaning substance - Google Patents
Method for cleaning particulate filters e.g. exhaust particulate filters, in diesel engine of motor vehicle, involves forming nitrogen compound as main component, to act on catalytically active surface, and heating cleaning substance Download PDFInfo
- Publication number
- DE102011102218A1 DE102011102218A1 DE201110102218 DE102011102218A DE102011102218A1 DE 102011102218 A1 DE102011102218 A1 DE 102011102218A1 DE 201110102218 DE201110102218 DE 201110102218 DE 102011102218 A DE102011102218 A DE 102011102218A DE 102011102218 A1 DE102011102218 A1 DE 102011102218A1
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- DE
- Germany
- Prior art keywords
- filter
- liquid
- granules
- particulate filters
- cleaning
- 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.)
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Classifications
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- 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
- F01N3/0233—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 periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake
Abstract
Description
Fahrzeuge und Arbeitsmaschinen, die durch Dieselmotoren angetrieben werden, müssen mit einem Abgaspartikelfilter ausgestattet werden. Der heutige Standard wird mit
Ziel und Zweck der Erfindung ist ein Verfahren zur Reinigung auch geschlossener Filter/Katalysatoren mit schwer erreichbarem Ein-/Ausgang ohne Ausbau des Filters/Katalysators, das kein Brennverfahren mit hohen Temperaturen erfordert, einen sehr guten Reinigungseffekt aufweist und wirtschaftlich und schnell arbeitet.The aim and purpose of the invention is a method for cleaning even closed filters / catalysts with hard-to-reach input / output without removal of the filter / catalyst, which does not require a high temperature combustion process, has a very good cleaning effect and works economically and quickly.
Zu diesem Zweck wird eine Flüssigkeit oder ein Granulat, die/das mit Zusätzen versehen sein kann, in den Filter eingebracht. Die Einbringung kann durch ein Strahlverfahren mittels eines Trägergases, z. B. Druckluft, dem die die Flüssigkeit bzw. das Granulat zugesetzt werden, vorgenommen werden, bei Zuführung von Flüssigkeit zudem durch ein Sprühverfahren ohne die Unterstützung durch ein Trägergas oder durch ein Gießverfahren. Kennzeichnend für die Wirkung der Flüssigkeit/des Granulates ist die vorwiegend gasförmige Aufspaltung der vorhandenen Ruß-/Ascheschichten in Verbindung mit der Oberflächenbeschichtung der Filter, sowie ein Siedepunkt unter 180° zumindest für die Hauptkomponente. Der Filter/Katalysator wird zwecks Reinigung/Regenerierung zunächst im Fahrzeug durch den Motorbetrieb auf eine Temperatur oberhalb des Siedepunktes der einzubringenden Flüssigkeit bzw. des einzubringenden Granulates erhitzt. Danach wird die Flüssigkeit bzw. das Granulat möglichst schnell in den Filter/Katalysator eingebracht, vorzugsweise mittels Sprühverfahren. Die Einbringung der Flüssigkeit/des Granulates in den Filter/Katalysator kann von der Motorseite und/oder von der Auspuffseite her erfolgen. Durch die Einbringung der Flüssigkeit bzw. des Granulates kühlen die beaufschlagten Oberflächen zunächst ab, dadurch wird eine komplette schlagartige Verdampfung verhindert. Dadurch kommt es zu einer ausreichenden Einwirkzeit der Flüssigkeit bzw. des Granulates, bis die Nachwärme aus dem Filterkörper die Temperatur der Flüssigkeit/des Granulates wieder über den Siedepunkt bringt und zur Verdampfung/Verdunstung führt. Es hat sich bei Versuchen überraschend gezeigt, das im Filter vorhandene Ruß-/Aschepartikel während dieses Vorgangs in Verbindung mit der speziellen Oberflächenbeschichtung der Filter aufgespalten und überwiegend oder vollständig in Gasform mit der Verdampfung der eingebrachten Flüssigkeit/des Granulates ausgetragen werden. Nach Abkühlung des gesamten Filters unter den Siedepunkt der Flüssigkeit bzw. des Granulates wird der Motor neu gestartet und Filter/Katalysator auf Betriebstemperatur gebracht.For this purpose, a liquid or a granulate, which may be provided with additives, is introduced into the filter. The introduction can by a blasting process by means of a carrier gas, for. B. compressed air to which the liquid or the granules are added, are made, with the supply of liquid also by a spray process without the support of a carrier gas or by a casting process. Characteristic of the effect of the liquid / granules is the predominantly gaseous splitting of the existing soot / ash layers in conjunction with the surface coating of the filter, and a boiling point below 180 ° at least for the main component. For the purpose of cleaning / regeneration, the filter / catalyst is first heated in the vehicle by the engine operation to a temperature above the boiling point of the liquid to be introduced or of the granulate to be introduced. Thereafter, the liquid or granules is introduced as quickly as possible into the filter / catalyst, preferably by means of spraying. The introduction of the liquid / granules into the filter / catalyst can take place from the engine side and / or from the exhaust side. By introducing the liquid or granules, the applied surfaces initially cool, thereby preventing a complete sudden evaporation. This results in a sufficient exposure time of the liquid or of the granules until the residual heat from the filter body brings the temperature of the liquid / granules back above the boiling point and leads to evaporation / evaporation. It has surprisingly been found in experiments, the existing in the filter soot / ash particles are split during this process in conjunction with the special surface coating of the filter and predominantly or completely discharged in gaseous form with the evaporation of the introduced liquid / granules. After the entire filter has cooled below the boiling point of the liquid or of the granulate, the engine is restarted and the filter / catalyst is brought to operating temperature.
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte Nicht-PatentliteraturCited non-patent literature
- EURO 5 [0001] EURO 5 [0001]
- EURO 6 [0001] EURO 6 [0001]
Claims (6)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110102218 DE102011102218A1 (en) | 2011-05-21 | 2011-05-21 | Method for cleaning particulate filters e.g. exhaust particulate filters, in diesel engine of motor vehicle, involves forming nitrogen compound as main component, to act on catalytically active surface, and heating cleaning substance |
ES11802954.5T ES2545406T3 (en) | 2010-12-28 | 2011-12-27 | Procedure for cleaning particulate filters |
EP11802954.5A EP2629877B1 (en) | 2010-12-28 | 2011-12-27 | Process for cleaning particulate filters |
PCT/EP2011/074089 WO2012089730A1 (en) | 2010-12-28 | 2011-12-27 | Process for cleaning particulate filters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110102218 DE102011102218A1 (en) | 2011-05-21 | 2011-05-21 | Method for cleaning particulate filters e.g. exhaust particulate filters, in diesel engine of motor vehicle, involves forming nitrogen compound as main component, to act on catalytically active surface, and heating cleaning substance |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011102218A1 true DE102011102218A1 (en) | 2012-11-22 |
Family
ID=47088174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE201110102218 Withdrawn DE102011102218A1 (en) | 2010-12-28 | 2011-05-21 | Method for cleaning particulate filters e.g. exhaust particulate filters, in diesel engine of motor vehicle, involves forming nitrogen compound as main component, to act on catalytically active surface, and heating cleaning substance |
Country Status (1)
Country | Link |
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DE (1) | DE102011102218A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016011996A1 (en) * | 2014-07-24 | 2016-01-28 | Wepp Gmbh | Device for cleaning a particulate filter and method for cleaning a particulate filter |
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2011
- 2011-05-21 DE DE201110102218 patent/DE102011102218A1/en not_active Withdrawn
Non-Patent Citations (2)
Title |
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EURO 5 |
EURO 6 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016011996A1 (en) * | 2014-07-24 | 2016-01-28 | Wepp Gmbh | Device for cleaning a particulate filter and method for cleaning a particulate filter |
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Legal Events
Date | Code | Title | Description |
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R082 | Change of representative |
Representative=s name: WICKORD, WIRO, M.SC. (USA) DIPL.-ING. DR.-ING., DE Representative=s name: TARVENKORN & WICKORD PATENTANWAELTE PARTNERSCH, DE |
|
R082 | Change of representative |
Representative=s name: TARVENKORN & WICKORD PATENTANWAELTE PARTNERSCH, DE |
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R005 | Application deemed withdrawn due to failure to request examination |