DE102011002438A1 - Method for determining loading of particulate filter in exhaust gas passage of combustion engine e.g. petrol engine, involves utilizing secondary air pump as pressure increasing device - Google Patents
Method for determining loading of particulate filter in exhaust gas passage of combustion engine e.g. petrol engine, involves utilizing secondary air pump as pressure increasing device Download PDFInfo
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- DE102011002438A1 DE102011002438A1 DE102011002438A DE102011002438A DE102011002438A1 DE 102011002438 A1 DE102011002438 A1 DE 102011002438A1 DE 102011002438 A DE102011002438 A DE 102011002438A DE 102011002438 A DE102011002438 A DE 102011002438A DE 102011002438 A1 DE102011002438 A1 DE 102011002438A1
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- pressure
- particulate filter
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- particle filter
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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
- F01N3/08—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
- F01N3/101—Three-way catalysts
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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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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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
- F01N3/08—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
- F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/04—Filtering activity of particulate filters
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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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/14—Systems for adding secondary air into exhaust
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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
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/08—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0812—Particle filter loading
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- 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
-
- 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
- Y02T10/40—Engine management systems
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Bestimmung der Beladung eines Partikelfilters im Abgaskanal einer Brennkraftmaschine, wobei mittels einer Druckerhöhungseinrichtung in den Abgaskanal vor dem Partikelfilter ein Gasstrom eingebracht werden kann und wobei mit einem ersten Drucksensor vor dem Partikelfilter der Gasdruck bestimmt wird.The invention relates to a method for determining the loading of a particulate filter in the exhaust passage of an internal combustion engine, wherein by means of a pressure increasing device in the exhaust passage upstream of the particulate filter, a gas flow can be introduced and wherein the gas pressure is determined with a first pressure sensor in front of the particulate filter.
Die Erfindung betrifft weiterhin eine Vorrichtung zur Durchführung des Verfahrens.The invention further relates to a device for carrying out the method.
Stand der TechnikState of the art
Partikelfilter werden zur Reduzierung der Partikelemission von mit Benzin oder Dieselkraftstoff betriebenen Brennkraftmaschinen eingesetzt. Das Abgas der Brennkraftmaschine wird durch den Partikelfilter geleitet, der die in dem Abgas befindlichen Feststoffpartikel abscheidet und in einem Filtersubstrat zurückhält. Durch die in dem Filtersubstrat eingelagerten Rußmassen setzt sich der Partikelfilter mit der Zeit zu, was sich in einer Erhöhung des Strömungswiderstands und damit des Abgasgegendrucks bemerkbar macht. Aus diesem Grund muss die eingelagerte Rußmasse von Zeit zu Zeit ausgetragen werden. Hierzu kann die Abgastemperatur, beispielhaft durch innermotorische Maßnahmen, so weit angehoben werden, dass die Rußpartikel oxidieren. In jedem Fall ist es erforderlich, zu erkennen, inwiefern die Beladung des Partikelfilters so hoch ist, dass eine Reinigung erforderlich ist. Gemäß dem Stand der Technik wird aus dem Differenzdruck der Abgase vor und nach dem Partikelfilter abgeleitet, ob die Beladung so weit fortgeschritten ist, dass eine Reinigung des Partikelfilters erforderlich ist. Bei kleinem Abgasvolumenstrom ist die Druckdifferenz jedoch so gering, dass die Beladungserkennung unzureichend genau sein kann.Particulate filters are used to reduce particulate emissions from gasoline or diesel fueled internal combustion engines. The exhaust gas of the internal combustion engine is passed through the particulate filter, which deposits the solid particles located in the exhaust gas and retains them in a filter substrate. As a result of the soot masses embedded in the filter substrate, the particle filter increases over time, which is manifested in an increase in the flow resistance and thus in the exhaust backpressure. For this reason, the stored soot mass must be discharged from time to time. For this purpose, the exhaust gas temperature, for example by internal engine measures, be raised so far that the soot particles oxidize. In any case, it is necessary to recognize how much the load of the particulate filter is so high that cleaning is required. According to the prior art, it is derived from the differential pressure of the exhaust gases before and after the particle filter, whether the load has progressed so far that a purification of the particulate filter is required. At low exhaust gas flow rate, however, the pressure difference is so low that the load detection can be insufficiently accurate.
Zur Abgasreinigung bei fremdgezündeten Brennkraftmaschinen werden Katalysatoren eingesetzt, die beim Start möglichst schnell auf Betriebstemperatur gebracht werden sollen. Aus der
Aus der
Es ist daher Aufgabe der Erfindung, ein Verfahren anzugeben, das bei einem erweiterten Bereich von Betriebszuständen eine Bestimmung der Beladung eines Partikelfilters aus der Druckdifferenz zwischen dem Druck vor und dem Druck nach dem Partikelfilter ermöglicht. Es ist weiterhin Aufgabe der Erfindung, eine Vorrichtung zur Durchführung des Verfahrens anzugeben.It is therefore an object of the invention to provide a method which allows for an extended range of operating conditions, a determination of the loading of a particulate filter from the pressure difference between the pressure before and the pressure after the particulate filter. It is a further object of the invention to provide a device for carrying out the method.
Offenbarung der ErfindungDisclosure of the invention
Die das Verfahren betreffende Aufgabe der Erfindung wird dadurch gelöst, dass zur Bestimmung der Beladung des Partikelfilters mittels der Druckerhöhungseinrichtung ein Gasstrom in den Abgaskanal vor dem Partikelfilter eingebracht wird, dass aus der Differenz der Gasdrücke vor und nach dem Partikelfilter dessen Beladung bestimmt wird und dass als Druckerhöhungseinrichtung eine Sekundärluftpumpe verwendet wird. Wird die Brennkraftmaschine in Teillast betrieben, liegt ein geringer Abgasstrom vor und die Beladungserkennung aus der Differenz der Gasdrücke vor und nach dem Partikelfilter kann unzureichend genau sein. Wird erfindungsgemäß durch die Zumischung eines zusätzlichen Gasstroms, beispielhaft von zusätzlicher von außen angesaugter Luft, der Massenstrom im Abgaskanal erhöht, wird somit der Druckabfall über dem Partikelfilter erhöht und es werden somit Unterschiede genauer bestimmbar. Hierdurch verringert sich der Messfehler der auf dem Druckabfall beruhenden Beladungserkennung. Die für die beschleunigte Aufheizung der Katalysatoren beim Start der Brennkraftmaschine vorgesehene Sekundärluftpumpe kann als erfindungsgemäße Druckerhöhungseinrichtung während der Beladungserkennung verwendet werden. Für die Bestimmung des Gasstroms durch den Partikelfilter wird der Luftmassenstrom in die Brennkraftmaschine gemäß dem Stand der Technik mit einem Luftmassenmesser bestimmt. Weiterhin wird die eingespritzte Kraftstoffmenge berücksichtigt. Hinzu kommt der erfindungsgemäß zudosierte Gasstrom, der aus der Drehzahl oder Betriebsspannung der Sekundärluftpumpe oder dem Luftdruck im Sekundärluftpfad bestimmt wird. Der Gasstrom aus der Brennkraftmaschine kann auch indirekt aus deren Drehzahl und dem Ladedruck unter Berücksichtigung der zudosierten Kraftstoffmenge bestimmt werden.The object of the invention relating to the method is achieved by introducing a gas stream into the exhaust gas duct in front of the particle filter in order to determine the loading of the particle filter by determining its load from the difference between the gas pressures upstream and downstream of the particle filter and that Pressure Booster a secondary air pump is used. If the internal combustion engine is operated at partial load, there is a small exhaust gas flow and the load detection from the difference of the gas pressures before and after the particle filter can be insufficiently accurate. Is inventively by the admixing of an additional gas flow, for example of additional air drawn in from outside, which increases mass flow in the exhaust gas duct, thus increases the pressure drop across the particulate filter and thus differences can be determined more accurately. This reduces the measurement error of the load detection based on the pressure drop. The provided for the accelerated heating of the catalysts at the start of the internal combustion engine secondary air pump can be used as pressure-increasing device according to the invention during the load detection. For the determination of the gas flow through the particle filter, the air mass flow is determined in the internal combustion engine according to the prior art with an air mass meter. Furthermore, the injected fuel amount is taken into account. In addition, the gas flow metered according to the invention, which is determined from the speed or operating voltage of the secondary air pump or the air pressure in the secondary air path. The gas flow from the internal combustion engine can also be determined indirectly from the rotational speed and the boost pressure, taking into account the metered quantity of fuel.
Die Vorrichtung zur Bestimmung des Differenzdrucks über dem Partikelfilter kann vereinfacht werden, indem statt zwei Druckmessern vor und hinter dem Partikelfilter oder einem Differenzdruckmesser zur Bestimmung der Beladung des Partikelfilters der Gasdruck hinter dem Partikelfilter aus dem Atmosphärendruck bestimmt wird oder indem der Gasdruck vor dem Partikelfilter aus dem Gasdruck am Ausgang der Druckerhöhungseinrichtung bestimmt wird. Im zweiten Fall kann bei bekanntem Druckabfall an einem geöffneten Sekundärluftventil und dem Gasstrom der Druck vor dem Partikelfilter bestimmt werden und es kann ein Druckmesser eingespart werden.The device for determining the differential pressure across the particulate filter can be simplified by instead of two pressure gauges before and after the particulate filter or a differential pressure gauge for determining the loading of the particulate filter, the gas pressure behind the particulate filter from the atmospheric pressure is determined or by the gas pressure upstream of the particulate filter from the Gas pressure at the output of the pressure booster is determined. In the second case can be determined at a known pressure drop at an open secondary air valve and the gas flow, the pressure in front of the particulate filter and it can be saved a pressure gauge.
Ist eine Brennkraftmaschine im Schubbetrieb, wird kein Kraftstoff eingespritzt und es werden kein zusätzliches Kohlenmonoxid oder unverbrannten Kohlenwasserstoffe durch die Katalysatoren im Abgaskanal geleitet. Bei der erfindungsgemäßen Zudosierung von Außenluft findet daher keine zusätzliche exotherme Reaktion im Katalysator statt, die diesen beschädigen könnte. Im Volllast-Betrieb ist der Gasstrom aus der Brennkraftmaschine besonders groß, so dass, zusammen mit dem erfindungsgemäß zusätzlich eingebrachten Gasstrom der Differenzdruck über dem Partikelfilter besonders hoch ist. Es ist daher vorteilhaft, wenn die Bestimmung der Beladung des Partikelfilters im Schubbetrieb der Brennkraftmaschine, insbesondere vor Schubabschaltung nach Volllast vorgenommen wird.If an internal combustion engine is in overrun operation, no fuel is injected and no additional carbon monoxide or unburned hydrocarbons are passed through the catalysts in the exhaust duct. In the metered addition of outside air according to the invention, therefore, no additional exothermic reaction takes place in the catalyst, which could damage it. In full-load operation, the gas flow from the internal combustion engine is particularly large, so that, together with the gas stream additionally introduced according to the invention, the differential pressure across the particulate filter is particularly high. It is therefore advantageous if the determination of the loading of the particulate filter in the overrun mode of the internal combustion engine, in particular before fuel cut to full load is made.
Eine Überhitzung eines Dreiwege-Katalysators kann besonders wirkungsvoll verhindert werden, indem der Massenstrom des Gasstroms in Abhängigkeit der Temperatur einer Abgasreinigungseinrichtung gewählt wird. Wird der Massenstrom des Gasstroms in Abhängigkeit vom Differenzdruck über dem Partikelfilter gewählt, kann ein optimierter Messbereich für Beladungserkennung erreicht werden. Über die Sekundärluftzufuhr kann zusätzlicher Sauerstoff für Regeneration des Partikelfilters in Abhängigkeit von dessen Temperatur eingebracht werden und so dessen Regeneration gesteuert werden. Wird der Partikelfilters zu heiß, kann über die Drehzahl der Sekundärluftpumpe der Massenstrom vermindert werden, wird er zu kalt, kann Sekundärluft den exothermen Abbrand er Rußpartikel unterstützen. Vorteilhaft ist, dass in diesem Fall die Brennkraftmaschine weiter mit einem Luft-Kraftstoff-Verhältnis von Lambda = 1 betrieben werden kann.Overheating of a three-way catalyst can be prevented particularly effectively by the mass flow of the gas stream is selected in dependence on the temperature of an exhaust gas purification device. If the mass flow of the gas flow is selected as a function of the differential pressure across the particulate filter, an optimized measuring range for load detection can be achieved. Additional oxygen can be introduced via the secondary air supply for regeneration of the particulate filter as a function of its temperature, thus controlling its regeneration. If the particle filter becomes too hot, the mass flow can be reduced by the speed of the secondary air pump. If it becomes too cold, secondary air can support the exothermic combustion of the soot particles. It is advantageous that in this case the internal combustion engine can continue to be operated with an air / fuel ratio of lambda = 1.
Eine Erkennung eines fehlerhaften Einbaus oder ein Fehlen des Partikelfilters läßt sich bewirken, indem aus der Differenz der Gasdrücke vor und nach dem Partikelfilter auf dessen korrekten Einbau geschlossen wird.A detection of a faulty installation or a lack of the particulate filter can be effected by the difference between the gas pressures before and after the particulate filter is closed on its correct installation.
Die Temperatur der Katalysatoren im Abgaskanal der Brennkraftmaschine kann in deren optimalen Arbeitsbereich gehalten werden, indem die Temperatur des Gasstroms aus der Druckerhöhungseinrichtung in Abhängigkeit von der Temperatur der Abgasreinigungsanlage eingestellt wird. Hierbei kann der Gasstroms mittels Wärmetauschern gekühlt oder geheizt werden.The temperature of the catalysts in the exhaust passage of the internal combustion engine can be maintained in its optimum operating range by the temperature of the gas stream from the pressure increasing device is adjusted in dependence on the temperature of the exhaust gas purification system. In this case, the gas stream can be cooled or heated by means of heat exchangers.
Die die Vorrichtung betreffende Aufgabe der Erfindung wird gelöst, indem während der Bestimmung der Beladung des Partikelfilters die Druckseite der Druckerhöhungseinrichtung mit dem Abgaskanal vor dem Partikelfilter verbunden ist und indem die Druckerhöhungseinrichtung als Sekundärluftpumpe ausgebildet ist. Der hier einbringbare zusätzliche Gasstrom kann bei Bedarf den Gasstrom aus der Brennkraftmaschine ergänzen, so dass der Gesamt-Gasstrom so hoch ist, dass die daraus resultierende Druckdifferenz über dem Partikelfilter so hoch ist, dass eine Beladungserkennung verbessert wird. Die Stelle der Zudosierung kann dabei bereits vor einem in Abgasrichtung vor dem Partikelfilter angeordneten Katalysator angeordnet sein. Eine Sekundärluftpumpe zur verbesserten Aufheizung von Katalysatoren ist bereits in der Nähe der Auslass-Ventile der Brennkraftmaschine mit dem Abgaskanal verbunden. Diese läßt sich somit erfindungsgemäß zur Verbesserung der Beladungserkennung verwenden.The object of the invention relating to the device is achieved by connecting the pressure side of the pressure increasing device to the exhaust gas channel in front of the particle filter during the determination of the loading of the particle filter, and by forming the pressure increasing device as a secondary air pump. If necessary, the additional gas stream which can be introduced here can supplement the gas flow from the internal combustion engine, so that the total gas flow is so high that the resulting pressure difference across the particle filter is so high that a load detection is improved. The point of addition may already be arranged in front of a catalyst arranged in the exhaust gas upstream of the particle filter. A secondary air pump for improved heating of catalytic converters is already connected to the exhaust gas duct in the vicinity of the exhaust valves of the internal combustion engine. This can thus be used according to the invention for improving the load detection.
Eine Überhitzung eines Dreiwege-Katalysators durch die Zuluft läßt sich vermeiden, wenn die Druckerhöhungseinrichtung mit dem Abgaskanal zwischen einem in Abgasrichtung vor dem Partikelfilter angeordneten Katalysator und dem Partikelfilter verbunden ist.Overheating of a three-way catalyst by the supply air can be avoided if the pressure increasing device is connected to the exhaust gas passage between a catalyst arranged in the exhaust gas upstream of the particle filter and the particle filter.
Ist die Zuluftseite der Druckerhöhungseinrichtung mit dem Abgaskanal hinter dem Partikelfilter verbunden, wird kein zusätzlicher Sauerstoff in den Dreiwege-Katalysator geleitet und die Gaszusammensetzung bleibt im optimalen Konvertierungsbereich. Weiterhin kann die Auskühlung von Katalysator und Partikelfilter vermindert werden, da das zugeführte Gasgemisch bereits in der Nähe der Temperatur der Abgase ist. Zur Umsetzung der Vorrichtung kann ein zusätzliches Umschaltventil an der Eingangsseite der Sekundärluftpumpe für Frischluft und Abgas für die Funktionen „Aufheizen mit Sekundärluft” und „Beladungserkennung” vorgesehen sein. If the supply air side of the pressure booster connected to the exhaust passage behind the particulate filter, no additional oxygen is fed into the three-way catalyst and the gas composition remains in the optimum conversion range. Furthermore, the cooling of catalyst and particulate filter can be reduced, since the supplied gas mixture is already in the vicinity of the temperature of the exhaust gases. To implement the device, an additional switching valve on the input side of the secondary air pump for fresh air and exhaust gas for the functions "heating with secondary air" and "load detection" may be provided.
Elektrische Energie für den Antrieb der Sekundärluftpumpe kann eingespart werden, indem die Zuluftseite der Druckerhöhungseinrichtung mit der Ausgangsseite eines Turboladers verbunden ist.Electrical energy for driving the secondary air pump can be saved by the supply air side of the pressure increasing device is connected to the output side of a turbocharger.
Kurze Beschreibung der ZeichnungShort description of the drawing
Die Erfindung wird im Folgenden anhand eines in der Figur dargestellten Ausführungsbeispiels näher erläutert. Es zeigt:The invention will be explained in more detail below with reference to an embodiment shown in the figure. It shows:
Der Partikelfilter
Wird die Brennkraftmaschine
In einer Erweiterung der Anwendung der erfindungsgemäßen Anordnung kann während der Regeneration des Partikelfilters
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 PatentliteraturCited patent literature
- DE 2216705 C3 [0004] DE 2216705 C3 [0004]
- DE 10100418 [0005] DE 10100418 [0005]
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DE102011002438A DE102011002438A1 (en) | 2011-01-04 | 2011-01-04 | Method for determining loading of particulate filter in exhaust gas passage of combustion engine e.g. petrol engine, involves utilizing secondary air pump as pressure increasing device |
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DE102011002438A DE102011002438A1 (en) | 2011-01-04 | 2011-01-04 | Method for determining loading of particulate filter in exhaust gas passage of combustion engine e.g. petrol engine, involves utilizing secondary air pump as pressure increasing device |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016211583A1 (en) | 2016-06-28 | 2017-12-28 | Robert Bosch Gmbh | Method and control device for determining the loading of a particle filter |
DE102016211525A1 (en) | 2016-06-27 | 2017-12-28 | Robert Bosch Gmbh | Method and control device for determining the loading of a particle filter |
WO2017220460A1 (en) | 2016-06-23 | 2017-12-28 | Volkswagen Aktiengesellschaft | Method and device for the exhaust gas aftertreatment of an internal combustion engine |
DE102016211693A1 (en) | 2016-06-29 | 2018-01-04 | Robert Bosch Gmbh | Method and control device for determining the loading of a particle filter |
DE102016211697A1 (en) | 2016-06-29 | 2018-01-04 | Robert Bosch Gmbh | Method and control device for determining the loading of a particle filter |
DE102016114901A1 (en) | 2016-08-11 | 2018-02-15 | Volkswagen Aktiengesellschaft | Diagnostic method and device for checking the functionality of a component for exhaust aftertreatment |
DE102016225758A1 (en) | 2016-12-21 | 2018-06-21 | Continental Automotive Gmbh | Method and device for monitoring a particulate filter arranged in the exhaust system of an internal combustion engine |
DE102018222247A1 (en) | 2018-12-19 | 2020-06-25 | Continental Automotive Gmbh | Method and device for diagnosing a particle filter arranged in the exhaust system of a gasoline-powered internal combustion engine |
DE102018222249A1 (en) | 2018-12-19 | 2020-06-25 | Continental Automotive Gmbh | Method and device for diagnosing a particle filter arranged in the exhaust system of a gasoline-powered internal combustion engine |
FR3100566A1 (en) * | 2019-09-11 | 2021-03-12 | Renault S.A.S | PROCESS FOR TREATMENT OF POLLUTANTS BY A THREE-WAY CATALYST WHEN STARTING A COMBUSTION ENGINE |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2216705C3 (en) | 1972-04-07 | 1978-06-08 | Robert Bosch Gmbh, 7000 Stuttgart | Method and device for detoxifying the exhaust gases of an internal combustion engine |
DE10100418A1 (en) | 2001-01-08 | 2002-07-11 | Bosch Gmbh Robert | Method and device for controlling an exhaust gas aftertreatment system |
-
2011
- 2011-01-04 DE DE102011002438A patent/DE102011002438A1/en not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2216705C3 (en) | 1972-04-07 | 1978-06-08 | Robert Bosch Gmbh, 7000 Stuttgart | Method and device for detoxifying the exhaust gases of an internal combustion engine |
DE10100418A1 (en) | 2001-01-08 | 2002-07-11 | Bosch Gmbh Robert | Method and device for controlling an exhaust gas aftertreatment system |
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WO2017220460A1 (en) | 2016-06-23 | 2017-12-28 | Volkswagen Aktiengesellschaft | Method and device for the exhaust gas aftertreatment of an internal combustion engine |
DE102016211274A1 (en) | 2016-06-23 | 2017-12-28 | Volkswagen Aktiengesellschaft | Method and device for exhaust aftertreatment of an internal combustion engine |
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