DE102018216589A1 - Method for operating an externally ignited internal combustion engine - Google Patents

Method for operating an externally ignited internal combustion engine Download PDF

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Publication number
DE102018216589A1
DE102018216589A1 DE102018216589.0A DE102018216589A DE102018216589A1 DE 102018216589 A1 DE102018216589 A1 DE 102018216589A1 DE 102018216589 A DE102018216589 A DE 102018216589A DE 102018216589 A1 DE102018216589 A1 DE 102018216589A1
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Germany
Prior art keywords
internal combustion
combustion engine
particle filter
cylinder
operating
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DE102018216589.0A
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German (de)
Inventor
Stephan Rubbert
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Priority to DE102018216589.0A priority Critical patent/DE102018216589A1/en
Publication of DE102018216589A1 publication Critical patent/DE102018216589A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • 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
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/12—Introducing corrections for particular operating conditions for deceleration
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • 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
    • F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
    • F01N2430/08—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing
    • 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
    • F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
    • F01N2900/06—Parameters used for exhaust control or diagnosing
    • F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/18—Control of the engine output torque
    • F02D2250/24—Control of the engine output torque by using an external load, e.g. a generator

Landscapes

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

Abstract

Verfahren zum Betreiben einer fremd gezündeten Brennkraftmaschine mit zumindest einem Zylinder, mit einem, in einem Abgasstrang angeordneten Partikelfilter, während einer Schubphase,gekennzeichnet, durch folgende Verfahrensschritte:- Einbringen von Kraftstoff in den zumindest einen Zylinder,- Zünden des Kraftstoffes in dem zumindest einen Zylinder.Durch das erfindungsgemäße Verfahren wird ein ungewolltes Regenerieren des Partikelfilters vermieden.Method for operating an externally ignited internal combustion engine with at least one cylinder, with a particle filter arranged in an exhaust line, during an overrun phase, characterized by the following method steps: - introducing fuel into the at least one cylinder, - igniting the fuel in the at least one cylinder The method according to the invention prevents unwanted regeneration of the particle filter.

Description

Die Erfindung betrifft ein Verfahren zum Betreiben einer fremd gezündeten Brennkraftmaschine mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for operating an externally ignited internal combustion engine with the features from the preamble of patent claim 1.

Zum technischen Umfeld wird beispielsweise auf die Deutsche Offenlegungsschrift DE 10 2015 220 876 A1 hingewiesen. Aus dieser Offenlegungsschrift ist eine Vorrichtung zur Steuerung eines Verbrennungsmotors bekannt, der wenigstens einen Zylinder mit einem Einlassventil und einem Auslassventil umfasst und dem wenigstens ein Katalysator zur Abgasnachbehandlung nachgeschaltet ist, wobei die Vorrichtung eine Steuereinheit umfasst. Um das Aufwärmverhalten eines Katalysators in der Abgasanlage eines Verbrennungsmotors zu verbessern, wird erfindungsgemäß vorgeschlagen, dass die Steuereinheit dazu eingerichtet ist, eine Untertemperierung des Katalysators zu erkennen und bei gleichzeitigem Vorliegen einer Untertemperierung und einer Schubabschaltung wenigstens ein Ventil jedes Zylinders zu schließen und geschlossen zu halten. Durch diese Maßnahme wird ein Abkühlen des Katalysators verhindert.The technical environment is, for example, the German Offenlegungsschrift DE 10 2015 220 876 A1 pointed out. From this published application, a device for controlling an internal combustion engine is known, which comprises at least one cylinder with an intake valve and an exhaust valve and which is followed by at least one catalytic converter for exhaust gas aftertreatment, the device comprising a control unit. In order to improve the warming-up behavior of a catalytic converter in the exhaust system of an internal combustion engine, it is proposed according to the invention that the control unit is set up to detect an under-temperature of the catalytic converter and to close and keep at least one valve of each cylinder while an under-temperature and an overrun cut-off are present . This measure prevents the catalyst from cooling.

Weiter ist aus der Deutschen Offenlegungsschrift DE 10 2010 046 899 A1 eine Partikelfilterregeneration während einer Abschaltung einer Brennkraftmaschine bekannt. Es wird ein Verfahren zum Steuern der Regeneration des Partikelfilters vorgeschlagen, der in einem Fahrzeug stromabwärts der Brennkraftmaschine positioniert ist, welches folgende Merkmale umfasst:

  • - Während ersten Brennkraftmaschinenabschaltbedingungen Steigern von überschüssigem Sauerstoffs zu einem Partikelfilter und Regenerieren des Partikelfilters zumindest während eines Teils einer Brennkraftmaschinenabschaltung und
  • - Während zweiten Brennkraftmaschinenabschaltbedingungen Verringern des überschüssigen Sauerstoffs zu dem Partikelfilter zumindest während eines Teils von Brennkraftmaschinenabschaltung.
Next is from the German Offenlegungsschrift DE 10 2010 046 899 A1 a particle filter regeneration known during a shutdown of an internal combustion engine. A method for controlling the regeneration of the particle filter, which is positioned in a vehicle downstream of the internal combustion engine, is proposed, which comprises the following features:
  • - During the first engine shutdown conditions, increasing excess oxygen to a particle filter and regenerating the particle filter at least during part of an engine shutdown and
  • - During second engine shutdown conditions, reducing the excess oxygen to the particulate filter at least during part of engine shutdown.

Auch wenn das bekannte Verfahren zur Regeneration eines Partikelfilters nicht nachteilig ist, liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine ungewollte Regeneration eines Partikelfilters für eine fremd gezündete Brennkraftmaschine während einer Schubphase zu verhindern.Even if the known method for the regeneration of a particle filter is not disadvantageous, the object of the present invention is to prevent an unwanted regeneration of a particle filter for an externally ignited internal combustion engine during an overrun phase.

Diese Aufgabe wird durch die Verfahrensmerkmale im kennzeichnenden Teil des Patentanspruchs 1 gelöst.This object is achieved by the features of the method in the characterizing part of patent claim 1.

Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben.Advantageous developments of the invention are described in the subclaims.

Aufgrund des erfindungsgemäßen Verfahrens wird während einer Schubphase, d. h. dass ein Fahrzeug mit der Brennkraftmaschine rollt und keine Leistung angefordert wird, kein Sauerstoff zum Partikelfilter durch die fremd gezündete Brennkraftmaschine gefördert, so dass dieser nicht ungewollt durch Rußabbrand regeneriert wird. Auch ein evtl. dem Partikelfilter vorgeschalteter Katalysator, wie z. B. ein Drei-Wege-Katalysator, wird nicht durch Sauerstoff während der Schubphase vergiftet.Because of the method according to the invention, during an overrun phase, H. that a vehicle rolls with the internal combustion engine and no power is requested, no oxygen is conveyed to the particle filter by the externally ignited internal combustion engine, so that it is not inadvertently regenerated by soot combustion. A possibly upstream of the particle filter catalyst, such as. B. a three-way catalyst is not poisoned by oxygen during the overrun phase.

Falls ein höheres Bremsmoment während der Schubabschaltung erforderlich ist, kann eine durch eine späte Zündung des Kraftstoffes gemäß Patentanspruch 2 das Bremsmoment der Brennkraftmaschine erhöht werden.If a higher braking torque is required during overrun fuel cutoff, the braking torque of the internal combustion engine can be increased by a late ignition of the fuel.

Gemäß Patentanspruch 3 kann das Bremsmoment durch eine Maximierung des Schleppmoments der Brennkraftmaschine nochmals weiter erhöht werden. Dazu kann z. B. die Last zumindest eines Nebenaggregates, wie z. B. eines Generators oder einer Ölpumpe angehoben werden.According to claim 3, the braking torque can be increased further by maximizing the drag torque of the internal combustion engine. For this, e.g. B. the load of at least one auxiliary unit, such as. B. a generator or an oil pump.

Es können beispielsweise die Generatorleistung und/oder die Leistung der Ölpumpe der Brennkraftmaschine maximiert werden, indem ein möglichst hoher Generatorladestrom und ein möglichst hoher Öldruck angefordert werden. Zusätzlich kann beispielsweise auch der Klimakompressor als ein weiterer Verbraucher hinzugeschaltet werden.For example, the generator output and / or the output of the oil pump of the internal combustion engine can be maximized by requesting the highest possible generator charging current and the highest possible oil pressure. In addition, the air conditioning compressor, for example, can also be connected as an additional consumer.

Mit den oben vorgeschlagenen Maßnahmen wird verhindert, dass der Katalysator durch freien Sauerstoff vergiftet und der Partikelfilter durch unerwünschten Rußabbrand ungewollt regeneriert wird. Damit werden auch in dem stationären Betrieb während einer Schubphase eine hohe Konversationsrate im Katalysator und eine maximale Wirkung des Partikelfilters erreicht und die Abgase werden optimal gereinigt.The measures proposed above prevent the catalyst from being poisoned by free oxygen and the particle filter from being inadvertently regenerated by undesired soot combustion. This means that even in stationary operation, a high conversation rate in the catalytic converter and a maximum effect of the particle filter are achieved during an overrun phase and the exhaust gases are optimally cleaned.

Mit zunehmender Betriebsdauer einer fremd gezündeten Brennkraftmaschine nimmt der Partikelfilter mit dem Abgas feinste Metallpartikel vom Lagerabrieb und Asche von verbranntem Öl der Brennkraftmaschine auf. Das führt dazu, dass der Partikelfilter teilweise verstopft und damit die Filterwirkung verbessert wird. Gleichzeitig nimmt der Abgasgegendruck bei hoher Last der Brennkraftmaschine zu. Das führt bei niedrigen Drehzahlen der Brennkraftmaschine zu einer höheren Vorentflammungsneigung und bei hoher Drehzahl der Brennkraftmaschine zu einer abnehmenden Leistung der Brennkraftmaschine. Mit einer Ladedruckreelung wenn die Brennkraftmaschine über eine Aufladevorrichtung, wie beispielsweise einen Abgasturbolader, verfügt, die den laufzeitabhängigen Abgasgegendruck berücksichtigt, kann bei niedrigen Drehzahlen der Brennkraftmaschine und schlechten Betriebsbedingungen gemäß Patentanspruch 4 der Ladedruck abgesenkt werden, um die Vorentflammungsneigung wieder zu Reduzieren.As the operating time of an externally ignited internal combustion engine increases, the particulate filter with the exhaust gas absorbs the finest metal particles from the bearing abrasion and ash from burned oil of the internal combustion engine. The result is that the particle filter is partially clogged and the filter effect is improved. At the same time, the exhaust gas back pressure increases with a high load of the internal combustion engine. This leads to a higher tendency to pre-ignition at low engine speeds and to a decrease in engine power at high engine speeds. With a boost pressure control if the internal combustion engine has a charging device, such as an exhaust gas turbocharger, which Taking into account runtime-dependent exhaust gas back pressure, at low engine speeds and poor operating conditions, the boost pressure can be reduced in order to reduce the tendency to pre-ignite again.

Gemäß Patentanspruch 5 kann dann bei hohen Drehzahlen der Brennkraftmaschine der Ladedruck angehoben werden, um die abnehmende Leistung der Brennkraftmaschine wieder auszugleichen. Diese Funktion kann den Differenzdrucksensor des Partikelfilters auswerten und damit auch den momentanen Regenerationszustand des Partikelfilters berücksichtigen. Nach einer erfolgten Regeneration des Partikelfilters kann der Ladedruck dem neuen Abgasgegendruckniveau wieder angepasst werden.According to claim 5, the boost pressure can then be raised at high engine speeds in order to compensate for the decreasing output of the engine. This function can evaluate the differential pressure sensor of the particle filter and thus also take into account the current regeneration state of the particle filter. After the particle filter has been regenerated, the boost pressure can be adjusted to the new exhaust gas back pressure level.

Durch die erfindungsgemäß vorgeschlagenen Maßnahmen wird verhindert, dass ein, beispielsweise dem Partikelfilter vorgeschalteter Katalysator durch den freien Sauerstoff vergiftet und der Partikelfilter durch unerwünschten Rußabbrand regeneriert wird. Damit werden auch im stationären Betrieb während einer Schubphase eines Kraftfahrzeuges mit einer fremd gezündeten Brennkraftmaschine eine hohe Konversationsrate von Schadstoffen im Abgas in dem Katalysator und eine maximale Filterwirkung des Partikelfilters erreicht.The measures proposed according to the invention prevent a catalyst, for example upstream of the particle filter, from being poisoned by the free oxygen and the particle filter being regenerated by undesired soot combustion. Thus, a high conversation rate of pollutants in the exhaust gas in the catalytic converter and a maximum filtering effect of the particle filter are achieved even in stationary operation during an overrun phase of a motor vehicle with an externally ignited internal combustion engine.

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 documents listed by the applicant has been generated automatically and is only included 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 PatentliteraturPatent literature cited

  • DE 102015220876 A1 [0002]DE 102015220876 A1 [0002]
  • DE 102010046899 A1 [0003]DE 102010046899 A1 [0003]

Claims (5)

Verfahren zum Betreiben einer fremd gezündeten Brennkraftmaschine mit zumindest einem Zylinder, mit einem, in einem Abgasstrang angeordneten Partikelfilter, während einer Schubphase, gekennzeichnet, durch folgende Verfahrensschritte: - Einbringen von Kraftstoff in den zumindest einen Zylinder, - Zünden des Kraftstoffes in dem zumindest einen Zylinder.Method for operating an externally ignited internal combustion engine with at least one cylinder, with a particle filter arranged in an exhaust line, during an overrun phase, characterized by the following method steps: Introducing fuel into the at least one cylinder, - Ignition of the fuel in the at least one cylinder. Verfahren nach Patentanspruch 1, gekennzeichnet, durch folgenden Verfahrensschritt: - Verstellen eines Zündzeitpunktes nach spät.Procedure according to Claim 1 , characterized by the following process step: - Adjusting an ignition timing late. Verfahren nach Patentanspruch 1 oder 2, gekennzeichnet, durch folgenden Verfahrensschritt: - Anheben einer Last zumindest eines Nebenaggregates.Procedure according to Claim 1 or 2nd , characterized by the following process step: - lifting a load of at least one auxiliary unit. Verfahren nach einem der Patentansprüche 1 bis 3, wenn der Partikelfilter mit Asche zugesetzt ist, wobei die Brennkraftmaschine über eine Aufladevorrichtung verfügt, gekennzeichnet, durch folgenden Verfahrensschritt: - Absenken eines Ladedruckes bei niedrigen Drehzahlen der Brennkraftmaschine.Procedure according to one of the Claims 1 to 3rd , if the particle filter with ash is clogged, the internal combustion engine having a supercharging device, characterized by the following method step: - lowering a boost pressure at low engine speeds. Verfahren nach Patentanspruch 4, wenn der Partikelfilter mit Asche zugesetzt ist, gekennzeichnet, durch folgenden Verfahrensschritt: - Anheben des Ladedruckes bei hohen Drehzahlen der Brennkraftmaschine.Procedure according to Claim 4 , if the particle filter is clogged with ash, characterized by the following process step: - Raising the boost pressure at high engine speeds.
DE102018216589.0A 2018-09-27 2018-09-27 Method for operating an externally ignited internal combustion engine Pending DE102018216589A1 (en)

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DE102018216589.0A DE102018216589A1 (en) 2018-09-27 2018-09-27 Method for operating an externally ignited internal combustion engine

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010046899A1 (en) * 2009-09-29 2011-03-31 Ford Global Technologies, LLC, Dearborn Particulate filter regeneration during engine shutdown
DE102010046666A1 (en) * 2009-09-29 2011-06-09 Ford Global Technologies, LLC, Dearborn Method of controlling ignition for particulate filter regeneration
US20120137677A1 (en) * 2010-09-29 2012-06-07 Toyota Jidosha Kabushiki Kaisha Internal combustion engine with turbocharger
DE102012021882A1 (en) * 2012-11-07 2014-05-08 Volkswagen Aktiengesellschaft Method of operating spark ignition engine for driving motor vehicle, involves temporarily suppressing fuel cut-off during thrust condition, when temperature and/or loading value of filter is equal to predetermined threshold
DE102015220876A1 (en) * 2015-10-26 2017-04-27 Ford Global Technologies, Llc Device for controlling an internal combustion engine
DE102016222325A1 (en) * 2016-11-14 2018-05-17 Robert Bosch Gmbh Method and control device for operating a gasoline particle filter having gasoline engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010046899A1 (en) * 2009-09-29 2011-03-31 Ford Global Technologies, LLC, Dearborn Particulate filter regeneration during engine shutdown
DE102010046666A1 (en) * 2009-09-29 2011-06-09 Ford Global Technologies, LLC, Dearborn Method of controlling ignition for particulate filter regeneration
US20120137677A1 (en) * 2010-09-29 2012-06-07 Toyota Jidosha Kabushiki Kaisha Internal combustion engine with turbocharger
DE102012021882A1 (en) * 2012-11-07 2014-05-08 Volkswagen Aktiengesellschaft Method of operating spark ignition engine for driving motor vehicle, involves temporarily suppressing fuel cut-off during thrust condition, when temperature and/or loading value of filter is equal to predetermined threshold
DE102015220876A1 (en) * 2015-10-26 2017-04-27 Ford Global Technologies, Llc Device for controlling an internal combustion engine
DE102016222325A1 (en) * 2016-11-14 2018-05-17 Robert Bosch Gmbh Method and control device for operating a gasoline particle filter having gasoline engine

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