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WO2011082769A1 - Regeneration of particle filters - Google Patents

Regeneration of particle filters Download PDF

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Publication number
WO2011082769A1
WO2011082769A1 PCT/EP2010/007593 EP2010007593W WO2011082769A1 WO 2011082769 A1 WO2011082769 A1 WO 2011082769A1 EP 2010007593 W EP2010007593 W EP 2010007593W WO 2011082769 A1 WO2011082769 A1 WO 2011082769A1
Authority
WO
WIPO (PCT)
Prior art keywords
internal combustion
combustion engine
air
engine according
supply unit
Prior art date
Application number
PCT/EP2010/007593
Other languages
German (de)
French (fr)
Inventor
Florian Loschitz
Marco Brun
Peter Broll
Original Assignee
Deutz Aktiengesellschaft
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 Deutz Aktiengesellschaft filed Critical Deutz Aktiengesellschaft
Priority to EP10800701A priority Critical patent/EP2513437A1/en
Publication of WO2011082769A1 publication Critical patent/WO2011082769A1/en

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
    • F01N3/023—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
    • F01N3/023—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
    • 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
    • F01N3/0253—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 adding fuel to exhaust gases
    • F01N3/0256—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 adding fuel to exhaust gases the fuel being ignited by electrical means
    • 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
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • 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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/14—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
    • F02D41/187—Circuit arrangements for generating control signals by measuring intake air flow using a hot wire flow sensor

Definitions

  • the invention relates to an internal combustion engine and a method for operating an internal combustion engine.
  • a system for regenerating a particulate filter in an exhaust pipe of an engine is known, the sensor means for detecting the temperature at the front of the filter, an air pump for supplying the front of the filter with an air flow, a heating device for electrical heating the filter and control means for energizing the heating device and the air pump during the regeneration of the filter and for calculating the temperature rise speed of the front temperature of the filter by the output of the sensor means to control the air flow of the air pump, so that the temperature rise speed reaches a predetermined value and thereby increasing the front temperature of the filter to a predetermined ignition value and controlling the air flow such that the temperature rise rate of the front temperature is reduced if a second predetermined value is exceeded, such that a In this way, the temperature rise speed of the front temperature is limited to a predetermined range.
  • This is disadvantageous that no reliable statement about a stoichiometric mode of operation can be obtained by means of a simple temperature measurement.
  • Air pump is a volumetric flow conveyor.
  • the air volume In order to determine the exact air mass flow of the pump for a stoichiometric operation, the air volume must be multiplied by the density in order to calculate and approximately obtain the air mass flow from three sensor values and one pump characteristic diagram. Depending on the density on the suction side, the mass flow can vary with constant volumetric flow. Adjustment of the mass flow is only possible if the temperature and the pressure on the suction side are measured.
  • a pressure sensor on the pressure side of the pump is needed to calculate the pressure ratio. From the requested mass flow, a volume flow is now determined on the basis of the density. This enters into a three-dimensional pump map with the pressure ratio, which determines a speed at which the pump must be operated. In this known approach there are inaccuracies z. B. by the pressure and suction pressure sensor values or the temperature sensor values, as well as in the area of the pump map by manufacturing tolerances of the manufacturer and by the changing temperature of the pump.
  • the object is achieved by a device according to claim 1 and a method according to claim 1 1.
  • An inventive burner thus obtains a defined, stoichiometric air fuel ratio. It is advantageous to replace the previously required three sensors and the pump map by a mass flow sensor. This measures z. B. the mass flow on the suction side of the pump and is evaluated directly by the power electronics of the compressor. The entire regulation of the mass flow is now transferred to the power electronics of the pump. The actual value is compared with the setpoint value and the speed is readjusted in accordance with the stoichiometric specifications.
  • FIG. 1 shows an internal combustion engine 1 with an intake tract 2 and an exhaust tract 3. In the intake tract 2 is an air filter 4.
  • a burner 6 In the exhaust tract 3 of the internal combustion engine 1 is a burner 6, a downstream oxidation catalyst 9, a diesel particulate filter 10 and an SCR catalyst 1 1.
  • a temperature sensor 15 In the oxidation catalyst 9 there is a temperature sensor 15, the Temperature required for process control determined and forwarded to the control or control unit 5.
  • the control or control unit 5 is connected to the combined control device 12 or power electronics 13 by means of data transmission connection.
  • the combined control device 12 or power electronics 13 is in the air supply unit 7, which is designed in this embodiment as a claw compressor integrated, which saves space and conduction paths and leads to shorter reaction times.
  • the air mass sensor 8 is in the intake tract 2 between the air filter 4 and pump. 7 arranged.
  • the measurement signals of the sensor 8 are processed directly in the combined control device 12 and power electronics 13.
  • a turbocharger 14 is arranged between the intake tract 2 and the exhaust tract 4. In an alternative embodiment, it is provided that a full-flow burner is used. When using a Vollstrombrenners can be disp
  • FIG. 2 shows an internal combustion engine 1 with an intake tract 2 and an exhaust tract 3.
  • intake tract 2 In the intake tract 2 is an air filter 4.
  • exhaust tract 3 of the internal combustion engine 1 In the exhaust tract 3 of the internal combustion engine 1 is a burner 6, a downstream oxidation catalyst 9, a diesel particulate filter 10 and an SCR catalyst. 1 1 .
  • oxidation catalytic converter 9 In the oxidation catalytic converter 9 is a temperature sensor 15 which determines the temperature required for the process control and forwards it to the control or control unit 5.
  • the control or control unit 5 is connected to the combined control device 12 or power electronics 13 by means of data transmission connection.
  • the combined control device 12 or power electronics 13 is integrated in the air supply unit 7, which is designed in this embodiment as a claw compressor.
  • the air mass sensor 8 is arranged in the exhaust tract 2 between the pump 7 and the burner 6. The measurement signals of the sensor 8 are processed directly in the combined control device 12 and power electronics 13.
  • a turbocharger 14 is arranged between the intake tract 2 and the exhaust tract

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

Abstract

The invention describes an internal combustion engine (1) comprising at least one intake tract (2), at least one exhaust tract (3), at least one air filter (4), at least one closed-loop or open-loop control unit (5) and at least one burner (6) and an air supply unit (7) communicating with the burner (6), and also at least one air mass sensor (8).

Description

Regeneration von Partikelfiltern  Regeneration of particle filters
B E S C H R E I B U N G DESCRIPTION
Die Erfindung betrifft eine Verbrennungskraftmaschine und ein Verfahren zum Betreiben einer Verbrennungskraftmaschine. The invention relates to an internal combustion engine and a method for operating an internal combustion engine.
Aus der EP 383187 B1 ist ein System zur Regenerierung eines Partikelfilters in einem Auspuffrohr eines Motors bekannt, das Fühlermittel zur Er- fassung der Temperatur an der Front des Filters, eine Luftpumpe zur Versorgung der Front des Filters mit einem Luftfluss, eine Erhitzungsvorrichtung zur elektrischen Erhitzung des Filters und Steuermittel zur Energieversorgung der Erhitzungsvorrichtung und der Luftpumpe während der Regenerierung des Filters und zum Berechnen der Temperaturanstiegsge- schwindigkeit der Fronttemperatur des Filters durch die Ausgangsgröße der Fühlermittel, um den Luftfluss der Luftpumpe zu steuern, so dass die Temperaturanstiegsgeschwindigkeit einen vorbestimmten Wert erreicht und dadurch die Fronttemperatur des Filters auf einen vorbestimmten Zündwert ansteigt und wobei der Luftfluss in der Weise gesteuert wird, dass die Temperaturanstiegsgeschwindigkeit der Fronttemperatur vermindert wird, falls ein zweiter vorbestimmter Wert überschritten wird, so dass auf diese Weise die Temperaturanstiegsgeschwindigkeit der Fronttemperatur auf einen vorbestimmten Bereich begrenzt wird. Daran ist nachteilig, dass mittels einer einfachen Temperaturmessung keine zuverlässige Aussage über eine stöchiometrische Betriebsweise zu erlangen ist. From EP 383187 B1 a system for regenerating a particulate filter in an exhaust pipe of an engine is known, the sensor means for detecting the temperature at the front of the filter, an air pump for supplying the front of the filter with an air flow, a heating device for electrical heating the filter and control means for energizing the heating device and the air pump during the regeneration of the filter and for calculating the temperature rise speed of the front temperature of the filter by the output of the sensor means to control the air flow of the air pump, so that the temperature rise speed reaches a predetermined value and thereby increasing the front temperature of the filter to a predetermined ignition value and controlling the air flow such that the temperature rise rate of the front temperature is reduced if a second predetermined value is exceeded, such that a In this way, the temperature rise speed of the front temperature is limited to a predetermined range. This is disadvantageous that no reliable statement about a stoichiometric mode of operation can be obtained by means of a simple temperature measurement.
Weiter werden in der Abgäsnachbehandlung Regenerationsbrenner eingesetzt, um einen beladenen Rußpartikelfilter zu regenerieren. Diese Brenner stellen mittels eines Teilstrombrenners einen Teil oder mittels eines Vollstrombrenners die gesamte thermische Aktivierungsenergie zur Partikelfil- terregeneration zur Verfügung. Eine in einem solchen System verwendete Luftpumpe ist ein Volumenstromförderer. Um den genauen Luftmassenstrom der Pumpe für einen stöchiometrischen Betrieb zu ermitteln, muss das Luftvolumen mit der Dichte multipliziert werden, um aus drei Sensorwerten und einem Pumpenkennfeld den Luftmassenstrom zu errechnen und annähernd zu erhalten. Abhängig von der Dichte auf der Saugseite kann der Massenstrom bei gleichbleibendem Volumenstrom variieren. Eine Einstellung des Massenstroms ist nur möglich, wenn die Temperatur und der Druck auf der Saugseite gemessen werden. Des Weiteren wird ein Drucksensor auf der Druckseite der Pumpe benötigt, um das Druckverhält- nis zu errechnen. Aus dem angeforderten Massenstrom wird nun aufgrund der Dichte ein Volumenstrom ermittelt. Dieser geht mit dem Druckverhältnis in ein dreidimensionales Pumpenkennfeld ein, das eine Drehzahl ermittelt, mit der die Pumpe betrieben werden muss. Bei dieser bekannten Vorgehensweise gibt es Ungenauigkeiten z. B. durch die druck- und saugseitigen Drucksensorwerte oder die Temperatursensorwerte, sowie im Bereich des Pumpenkennfelds durch Fertigungstoleranzen des Herstellers und durch die sich ändernde Temperatur der Pumpe. Furthermore, regeneration burners are used in the exhaust aftertreatment in order to regenerate a loaded soot particle filter. These burners make available part or all of the thermal activation energy for particle filter regeneration by means of a partial flow burner or by means of a full flow burner. One used in such a system Air pump is a volumetric flow conveyor. In order to determine the exact air mass flow of the pump for a stoichiometric operation, the air volume must be multiplied by the density in order to calculate and approximately obtain the air mass flow from three sensor values and one pump characteristic diagram. Depending on the density on the suction side, the mass flow can vary with constant volumetric flow. Adjustment of the mass flow is only possible if the temperature and the pressure on the suction side are measured. Furthermore, a pressure sensor on the pressure side of the pump is needed to calculate the pressure ratio. From the requested mass flow, a volume flow is now determined on the basis of the density. This enters into a three-dimensional pump map with the pressure ratio, which determines a speed at which the pump must be operated. In this known approach there are inaccuracies z. B. by the pressure and suction pressure sensor values or the temperature sensor values, as well as in the area of the pump map by manufacturing tolerances of the manufacturer and by the changing temperature of the pump.
Es ist die Aufgabe der vorliegenden Erfindung, eine Vorrichtung und ein Verfahren zu schaffen, die effektiv und wirksam funktionieren. Die Aufgabe wird durch eine Vorrichtung gemäß Anspruch 1 und ein Verfahren nach Anspruch 1 1 gelöst. Ein erfindungsgemäßer Brenner erhält so ein definiertes, stöchiometrisches Luf Kraftstoffverhältnis. Es ist von Vorteil, die bislang benötigten drei Sensoren und das Pumpenkennfeld durch einen Massenstromsensor zu ersetzen. Dieser misst z. B. den Massen- ström auf der Saugseite der Pumpe und wird von der Leistungselektronik des Verdichters direkt ausgewertet. Die gesamte Regelung des Massenstroms wird nun in die Leistungselektronik der Pumpe verlegt. Es wird der Istwert mit dem Sollwert verglichen und die Drehzahl entsprechend den stöchiometrischen Vorgaben nachgeregelt.  It is the object of the present invention to provide an apparatus and a method which function effectively and effectively. The object is achieved by a device according to claim 1 and a method according to claim 1 1. An inventive burner thus obtains a defined, stoichiometric air fuel ratio. It is advantageous to replace the previously required three sensors and the pump map by a mass flow sensor. This measures z. B. the mass flow on the suction side of the pump and is evaluated directly by the power electronics of the compressor. The entire regulation of the mass flow is now transferred to the power electronics of the pump. The actual value is compared with the setpoint value and the speed is readjusted in accordance with the stoichiometric specifications.
Die Vorteile dieser Erfindung liegen z. B. in der höheren Genauigkeit, da nur die Toleranz eines Sensors in den Massenstrom einfließt. Ein weiterer Vorteil der Erfindung liegt in dem geringeren baulichen Aufwand, da nur noch ein Sensor notwendig ist. The advantages of this invention are z. B. in the higher accuracy, since only the tolerance of a sensor flows into the mass flow. Another advantage of the invention lies in the lower structural complexity, since only one sensor is necessary.
Die genaue Rückmeldung des Massenstrom istwertes führt zu quasistöchi- ometrischen Oxidationsvorgängen im Brenner. The exact feedback of the mass flow value leads to quasi-stoichiometric oxidation processes in the burner.
Dies führt auch zu Vorteilen im laufenden Betrieb, da Kraftstoff eingespart wird. In der Leistungselektronik der Pumpe wird der Istmassenstrom durch den Sensor ausgewertet. Der Sollmassenstrom wird durch das Motorsteu- ergerät vorgegeben. Die Stellgröße ist die Drehzahl des Pumpenmotors. Eine Anordnung der Regelung des Massenstromes in der Pumpe bzw. in deren Leistungselektronik führt zu schnelleren Reaktionen auf Massen- stromeinbrüche durch wesentlich geringere Taktzeiten. Die gesamte Regelung der stöchiometrischen Versorgung des Brenners mit Luft übernimmt in einer erfindungsgemäßen Ausgestaltung die Leistungselektronik der Pumpe, wobei der Istmassenstrom an das Motorsteuergerät übermittelt wird. Somit ist dieser Regelkreis sehr schnell. Dies führt insgesamt zu einem sichereren und effektiveren Brennerbetrieb. In Figur 1 wird eine Verbrennungskraftmaschine 1 mit einem Ansaugtrakt 2 und einem Abgastrakt 3 dargestellt. Im Ansaugtrakt 2 befindet sich ein Luftfilter 4. Im Abgastrakt 3 der Verbrennungskraftmaschine 1 befindet sich ein Brenner 6, ein nachgeordneter Oxidationskatalysator 9, ein Dieselpartikelfilter 10 sowie ein SCR-Katalysator 1 1. Im Oxidationskatalysator 9 be- findet sich ein Temperatursensor 15, der die zur Prozessführung erforderliche Temperatur ermittelt und an die Regel- bzw. Steuerungseinheit 5 weiterleitet. Die Regel- bzw. Steuerungseinheit 5 ist mit der kombinierten Regelvorrichtung 12 bzw. Leistungselektronik 13 mittels Datenübertragungsverbindung verbunden. Die kombinierte Regelvorrichtung 12 bzw. Leistungselektronik 13 ist in die Luftversorgungseinheit 7, die in diesem Ausführungsbeispiel als Klauenverdichter ausgeführt ist, integriert, was Platz und Leitungswege spart und zu kürzeren Reaktionszeiten führt. Der Luftmassensensor 8 ist im Ansaugtrakt 2 zwischen Luftfilter 4 und Pumpe 7 angeordnet. Die Messsignale des Sensors 8 werden direkt in der kombinierten Regelvorrichtung 12 bzw. Leistungselektronik 13 verarbeitet. Ein Turbolader 14 ist zwischen Ansaugtrakt 2 und Abgastrakt 4 angeordnet. In einer alternativen Ausgestaltung ist vorgesehen, dass ein Vollstrom- brenner zum Einsatz kommt. Bei der Verwendung eines Vollstrombrenners kann auf den Einsatz eines Oxidationskatalysators verzichtet werden. This also leads to advantages during operation, as fuel is saved. In the power electronics of the pump, the actual mass flow is evaluated by the sensor. The setpoint mass flow is specified by the engine control unit. The manipulated variable is the speed of the pump motor. An arrangement of the regulation of the mass flow in the pump or in its power electronics leads to faster reactions to mass flow dips by significantly lower cycle times. The entire regulation of the stoichiometric supply of the burner with air takes over in an embodiment according to the invention the power electronics of the pump, wherein the actual mass flow is transmitted to the engine control unit. Thus, this control loop is very fast. Overall, this leads to a safer and more effective burner operation. FIG. 1 shows an internal combustion engine 1 with an intake tract 2 and an exhaust tract 3. In the intake tract 2 is an air filter 4. In the exhaust tract 3 of the internal combustion engine 1 is a burner 6, a downstream oxidation catalyst 9, a diesel particulate filter 10 and an SCR catalyst 1 1. In the oxidation catalyst 9 there is a temperature sensor 15, the Temperature required for process control determined and forwarded to the control or control unit 5. The control or control unit 5 is connected to the combined control device 12 or power electronics 13 by means of data transmission connection. The combined control device 12 or power electronics 13 is in the air supply unit 7, which is designed in this embodiment as a claw compressor integrated, which saves space and conduction paths and leads to shorter reaction times. The air mass sensor 8 is in the intake tract 2 between the air filter 4 and pump. 7 arranged. The measurement signals of the sensor 8 are processed directly in the combined control device 12 and power electronics 13. A turbocharger 14 is arranged between the intake tract 2 and the exhaust tract 4. In an alternative embodiment, it is provided that a full-flow burner is used. When using a Vollstrombrenners can be dispensed with the use of an oxidation catalyst.
Figur 2 zeigt eine Verbrennungskraftmaschine 1 mit einem Ansaugtrakt 2 und einem Abgastrakt 3. Im Ansaugtrakt 2 befindet sich ein Luftfilter 4. Im Abgastrakt 3 der Verbrennungskraftmaschine 1 befindet sich ein Brenner 6, ein nachgeordneter Oxidationskatalysator 9, ein Dieselpartikelfilter 10 sowie ein SCR-Katalysator 1 1 . Im Oxidationskatalysator 9 befindet sich ein Temperatursensor 15, der die zur Prozessführung erforderliche Temperatur ermittelt und an die Regel- bzw. Steuerungseinheit 5 weiterleitet. Die Regel- bzw. Steuerungseinheit 5 ist mit der kombinierten Regelvorrichtung 12 bzw. Leistungselektronik 13 mittels Datenübertragungsverbindung verbunden. Die kombinierte Regelvorrichtung 12 bzw. Leistungselektronik 13 ist in die Luftversorgungseinheit 7, die in diesem Ausführungsbeispiel als Klauenverdichter ausgeführt ist, integriert. Der Luftmassensensor 8 ist im Abgastrakt 2 zwischen Pumpe 7 und Brenner 6 angeordnet. Die Mess- Signale des Sensors 8 werden direkt in der kombinierten Regelvorrichtung 12 bzw. Leistungselektronik 13 verarbeitet. Ein Turbolader 14 ist zwischen Ansaugtrakt 2 und Abgastrakt 4 angeordnet. 2 shows an internal combustion engine 1 with an intake tract 2 and an exhaust tract 3. In the intake tract 2 is an air filter 4. In the exhaust tract 3 of the internal combustion engine 1 is a burner 6, a downstream oxidation catalyst 9, a diesel particulate filter 10 and an SCR catalyst. 1 1 . In the oxidation catalytic converter 9 is a temperature sensor 15 which determines the temperature required for the process control and forwards it to the control or control unit 5. The control or control unit 5 is connected to the combined control device 12 or power electronics 13 by means of data transmission connection. The combined control device 12 or power electronics 13 is integrated in the air supply unit 7, which is designed in this embodiment as a claw compressor. The air mass sensor 8 is arranged in the exhaust tract 2 between the pump 7 and the burner 6. The measurement signals of the sensor 8 are processed directly in the combined control device 12 and power electronics 13. A turbocharger 14 is arranged between the intake tract 2 and the exhaust tract 4.
Bezugszeichen reference numeral
1 Verbrennungskraftmaschine1 internal combustion engine
2 Ansaugtrakt 2 intake tract
3 Abgastrakt  3 exhaust tract
4 Luftfilter  4 air filters
5 Regel- bzw. Steuerungseinheit 5 control unit
6 Brenner 6 burners
7 Luftversorgungseinheit  7 air supply unit
8 Luftmassensensor  8 air mass sensor
9 Oxidationskatalysator  9 oxidation catalyst
10 Dieselpartikelfilter  10 diesel particulate filter
1 1 SCR - Katalysator  1 1 SCR catalyst
12 Regelvorrichtung  12 control device
13 Leistungselektronik  13 power electronics
14 Turbolader  14 turbochargers
15 Temperatursensor  15 temperature sensor

Claims

Regeneration von Partikelfiltern A N S P R Ü C H E Regeneration of particulate filters. INSPECTION
1 . Verbrennungskraftmaschine (1 ), umfassend wenigstens einen Ansaugtrakt (2), wenigstens einen Abgastrakt (3), wenigstens einen Luftfilter (4), wenigstens eine Regel- bzw. Steuerungseinheit (5) sowie wenigstens einen Brenner (6) und eine mit dem Brenner (6) kommunizierende Luftver- sorgungseinheit (7) sowie wenigstens einen Luftmassensensor (8). 1 . Internal combustion engine (1) comprising at least one intake tract (2), at least one exhaust tract (3), at least one air filter (4), at least one control unit (5) and at least one burner (6) and one with the burner ( 6) communicating air supply unit (7) and at least one air mass sensor (8).
2. Verbrennungskraftmaschine nach Anspruch 1 , 2. Internal combustion engine according to claim 1,
dadurch gekennzeichnet, dass sie einen Oxidationskatalysator (9) aufweist. characterized in that it comprises an oxidation catalyst (9).
3. Verbrennungskraftmaschine nach Anspruch 1 oder 2, 3. internal combustion engine according to claim 1 or 2,
dadurch gekennzeichnet, dass sie einen Dieselpartikelfilter (10) aufweist. characterized in that it comprises a diesel particulate filter (10).
4. Verbrennungskraftmaschine nach einem oder mehreren der vorgenannten Ansprüche, 4. internal combustion engine according to one or more of the preceding claims,
dadurch gekennzeichnet, dass sie einen SCR-Katalysator (1 1 ) aufweist. characterized in that it comprises an SCR catalyst (1 1).
5. Verbrennungskraftmaschine nach einem oder mehreren der vorgenannten Ansprüche, 5. Internal combustion engine according to one or more of the preceding claims,
dadurch gekennzeichnet, dass die Luftversorgungseinheit eine Regelvor- richtung (12) aufweist. characterized in that the air supply unit has a regulating device (12).
6. Verbrennungskraftmaschine nach einem oder mehreren der vorgenannten Ansprüche, 6. internal combustion engine according to one or more of the preceding claims,
dadurch gekennzeichnet, dass die Luftversorgungseinheit eine Leistungs- elektronik (13) aufweist. characterized in that the air supply unit has a power electronics (13).
7. Verbrennungskraftmaschine nach einem oder mehreren der vorgenannten Ansprüche, 7. internal combustion engine according to one or more of the preceding claims,
dadurch gekennzeichnet, dass der Luftmassensensor (8) in der Strömungsrichtung der Luft vor der Luftversorgungseinheit (7) angeordnet ist. characterized in that the air mass sensor (8) in the flow direction of the air in front of the air supply unit (7) is arranged.
8. Verbrennungskraftmaschine nach einem oder mehreren der vorgenannten Ansprüche, 8. Internal combustion engine according to one or more of the preceding claims,
dadurch gekennzeichnet, dass der Luftmassensensor (8) in der Strömungsrichtung der Luft nach der Luftversorgungseinheit (7) angeordnet ist. characterized in that the air mass sensor (8) in the flow direction of the air after the air supply unit (7) is arranged.
9. Verbrennungskraftmaschine nach einem oder mehreren der vorgenannten Ansprüche, 9. internal combustion engine according to one or more of the preceding claims,
dadurch gekennzeichnet, dass die Regelvorrichtung der Luftversorgungseinheit (7) mit der Regel- bzw. Steuerungseinheit (5) derart verbunden ist, dass sie Daten austauschen können. characterized in that the control device of the air supply unit (7) is connected to the control unit (5) such that they can exchange data.
10. Verbrennungskraftmaschine nach einem oder mehreren der vorgenannten Ansprüche, 10. Internal combustion engine according to one or more of the preceding claims,
dadurch gekennzeichnet, dass sie einen Turbolader (14) aufweist. characterized in that it comprises a turbocharger (14).
1 1 . Verfahren zum Betreiben einer Verbrennungskraftmaschine, 1 1. Method for operating an internal combustion engine,
dadurch gekennzeichnet, dass eine Vorrichtung nach einem oder mehreren der vorgenannten Ansprüche zum Einsatz kommt. characterized in that a device according to one or more of the preceding claims is used.
PCT/EP2010/007593 2009-12-17 2010-12-14 Regeneration of particle filters WO2011082769A1 (en)

Priority Applications (1)

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DE102009058714 2009-12-17
DE102010021753.0 2010-05-27
DE102010021753.0A DE102010021753B4 (en) 2009-12-17 2010-05-27 Regeneration of particle filters

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Publication number Priority date Publication date Assignee Title
DE102019134345B3 (en) * 2019-12-13 2021-05-12 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for an exhaust system of a motor vehicle
DE102022214199A1 (en) 2022-12-21 2024-06-27 Robert Bosch Gesellschaft mit beschränkter Haftung Method for operating a system for supplying air to a burner

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EP0383187B1 (en) 1989-02-13 1995-07-12 Isuzu Motors Limited Regeneration system for particulate trap
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US20070289290A1 (en) * 2001-08-06 2007-12-20 Bartley Gordon J J System and method for producing diesel exhaust for testing diesel engine aftertreatment devices
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WO2010022747A1 (en) * 2008-08-26 2010-03-04 Fev Motorentechnik Gmbh Producing ageing gas for exhaust-gas aftertreatment systems
DE102009003738A1 (en) * 2009-04-03 2010-10-07 Hjs Fahrzeugtechnik Gmbh & Co. Kg Exhaust gas purifying system for diesel engine of vehicle, has air supply device with sensor attached to air supply line of burner and air source opened at flow side in air supply line for supplying ambient air into air supply line

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MX2007010194A (en) * 2004-09-10 2008-11-04 Knorr Bremse Systeme "torque deficiency" (accumulator-based charge assistance).
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EP0383187B1 (en) 1989-02-13 1995-07-12 Isuzu Motors Limited Regeneration system for particulate trap
DE4447286A1 (en) * 1994-12-30 1996-07-04 Eberspaecher J Vehicle heater with controlled combustion air fan
US20070289290A1 (en) * 2001-08-06 2007-12-20 Bartley Gordon J J System and method for producing diesel exhaust for testing diesel engine aftertreatment devices
US20090071126A1 (en) * 2007-09-18 2009-03-19 Gm Global Technology Operations, Inc. High exhaust temperature, zoned, electrically-heated particulate matter filter
WO2010022747A1 (en) * 2008-08-26 2010-03-04 Fev Motorentechnik Gmbh Producing ageing gas for exhaust-gas aftertreatment systems
DE102009003738A1 (en) * 2009-04-03 2010-10-07 Hjs Fahrzeugtechnik Gmbh & Co. Kg Exhaust gas purifying system for diesel engine of vehicle, has air supply device with sensor attached to air supply line of burner and air source opened at flow side in air supply line for supplying ambient air into air supply line

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See also references of EP2513437A1 *

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DE102010021753B4 (en) 2016-02-04
DE102010021753A1 (en) 2011-06-22

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