DE102011002500A1 - Method for operating exhaust control system of internal combustion engine, involves introducing partially air into exhaust channel in flow direction of exhaust gases before exhaust gas purifying components - Google Patents
Method for operating exhaust control system of internal combustion engine, involves introducing partially air into exhaust channel in flow direction of exhaust gases before exhaust gas purifying components Download PDFInfo
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- DE102011002500A1 DE102011002500A1 DE102011002500A DE102011002500A DE102011002500A1 DE 102011002500 A1 DE102011002500 A1 DE 102011002500A1 DE 102011002500 A DE102011002500 A DE 102011002500A DE 102011002500 A DE102011002500 A DE 102011002500A DE 102011002500 A1 DE102011002500 A1 DE 102011002500A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—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 in combination with other devices
- F01N3/035—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 in combination with other devices with catalytic reactors
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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
- F01N3/20—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 specially adapted for catalytic conversion
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
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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
- F01N3/24—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B21/00—Engines characterised by air-storage chambers
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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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
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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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0261—Controlling the valve overlap
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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
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0273—Multiple actuations of a valve within an engine cycle
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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
- 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
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/025—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by changing the composition of the exhaust gas, e.g. for exothermic reaction on exhaust gas treating apparatus
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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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D2041/001—Controlling intake air for engines with variable valve actuation
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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
- 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
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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
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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)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Betreiben einer Abgasreinigungsanlage einer Brennkraftmaschine, welche in ihrem Abgaskanal als abgasreinigende Komponenten mindestens einen Katalysator und/oder einen Partikelfilter aufweist, wobei zur Verminderung der Schadstoffemissionen beim Start der Brennkraftmaschine im Abgaskanal in Strömungsrichtung des Abgases gesehen vor den abgasreinigenden Komponenten zumindest zeitweise Luft eingeleitet wird.The invention relates to a method for operating an exhaust gas purification system of an internal combustion engine, which has at least one catalyst and / or a particulate filter in its exhaust passage as exhaust gas cleaning components, wherein at least to reduce the pollutant emissions at the start of the engine in the exhaust passage in the flow direction of the exhaust gas seen before the exhaust gas cleaning components temporarily air is introduced.
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.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.
Zur Abgasreinigung bei fremdgezündeten Brennkraftmaschinen werden Katalysatoren eingesetzt, die beim Start möglichst schnell auf Betriebstemperatur gebracht werden sollen. Aus dem Stand der Technik sind unterschiedliche Katheizverfahren bekannt. Eines der Verfahren beruht auf der Nutzung der so genannten Sekundärlufteinblasung.For cleaning the exhaust gas in spark-ignited internal combustion engines, catalysts are used which are to be brought to operating temperature as quickly as possible at the start. Different Katheizverfahren are known from the prior art. One of the methods is based on the use of the so-called secondary air injection.
Aus der
Ein weiteres Beispiel zur Nutzung der Sekundärlufteinblasung ist aus der
Nachteilig ist derzeit der recht hohe Komponentenaufwand zur Umsetzung dieser Sekundärlufteinblasung.The disadvantage is currently the relatively high component cost to implement this secondary air injection.
Neuere Motorenkonzepte beschäftigen sich mit so genannten Druckluft-Hybrid-Antrieben, bei denen ein Teil der Arbeitszylinder der Brennkraftmaschine zumindest zeitweise zum Erzeugen von komprimierter Luft verwendet und diese in einem bordeigenen Hochdrucktank gespeichert wird. Diese Druckluft kann dann gemeinsam mit dem Kraftstoff in den Verbrennungszylinder geleitet werden, wobei der Drucklufttank die Funktion eines Verdichtungszylinders übernehmen kann. Man verspricht sich damit einen geringeren Kraftstoffverbrauch bei gleichzeitig geringem Schadstoffausstoß.Newer engine concepts are concerned with so-called air-hybrid drives, in which a part of the working cylinder of the internal combustion engine used at least temporarily for generating compressed air and this is stored in an on-board high-pressure tank. This compressed air can then be passed together with the fuel in the combustion cylinder, wherein the compressed air tank can take over the function of a compression cylinder. One promises thereby a lower fuel consumption with at the same time low emission of pollutants.
Aufgabe der Erfindung ist es, ein Verfahren bereitzustellen, mit dem das Prinzip der Sekundärlufteinblasung hinsichtlich des Komponentenaufwandes optimiert werden kann.The object of the invention is to provide a method by means of which the principle of secondary air injection can be optimized with regard to the component outlay.
Es ist weiterhin Aufgabe der Erfindung, eine entsprechende Vorrichtung zur Durchführung des erfinderischen Verfahrens bereitzustellen.It is a further object of the invention to provide a corresponding device for carrying out the inventive method.
Offenbarung der ErfindungDisclosure of the invention
Die das Verfahren betreffende Aufgabe wird durch die Merkmale der Ansprüche 1 bis 5 gelöst.The object of the method is solved by the features of
Das erfindungsgemäße Verfahren sieht vor, dass die Lufteinleitung mittels Druckluft aus einem Druckspeicher oder über mindestens einen Arbeitszylinder im Motorblock der Brennkraftmaschine durchgeführt wird, wobei mindestens ein Einlassventil und mindestens ein Auslassventil dieses Arbeitszylinders zu mindestens zeitweise gleichzeitig geöffnet werden.The inventive method provides that the introduction of air by means of compressed air from a pressure accumulator or over at least one working cylinder in the engine block of the internal combustion engine is performed, wherein at least one inlet valve and at least one exhaust valve of this working cylinder are opened at least temporarily simultaneously.
Die die Vorrichtung betreffende Aufgabe wird dadurch gelöst, dass die Lufteinleitung über ein Ventil aus dem Druckspeicher und/oder über mindestens einen Arbeitszylinder im Motorblock der Brennkraftmaschine mittels mindestens eines Einlassventils und mindestens eines Auslassventils dieses Arbeitszylinders zeitlich steuerbar ist und das Ventil von einer Ventilsteuerung ansteuerbar ist.The object relating to the device is achieved in that the air introduction via a valve from the pressure accumulator and / or at least one working cylinder in the engine block of the internal combustion engine by means of at least one inlet valve and at least one exhaust valve of this working cylinder is controlled in time and the valve is controlled by a valve control ,
Das Verfahren und die entsprechende Vorrichtung zum Durchführen des Verfahrens ermöglichen es, das Prinzip der Sekundärlufteinblasung zum schnellen Aufheizen der abgasreinigenden Komponenten, wie der Katalysator und/oder der Partikelfilter, in der Abgasreinigungsanlage anzuwenden, ohne dass eine Sekundärluftpumpe eingebaut sein muss. Dies wird durch die Nutzung des Druckspeichers als natürliche Sekundärluftquelle erreicht. Dies reduziert den Komponentenaufwand und die Systemkomplexität. So wird beispielsweise nur eine Leitung mit dem Ventil zwischen Druckspeicher und der Einblasstelle benötigt.The method and the corresponding apparatus for carrying out the method make it possible to apply the principle of secondary air injection for rapidly heating the exhaust gas-cleaning components, such as the catalyst and / or the particulate filter, in the exhaust gas purification system, without having to install a secondary air pump. This is achieved by using the pressure accumulator as a natural secondary air source. This reduces component complexity and system complexity. For example, only one line with the valve between the accumulator and the injection point is needed.
Die Lufteinleitung der Druckluft aus dem Druckspeicher kann recht einfach mittels eines Ventils gesteuert werden, welches von einer Ventilsteuerung angesteuert wird. Somit kann die Luftmenge dosiert werden.The air inlet of the compressed air from the accumulator can be controlled quite easily by means of a valve, which is controlled by a valve control. Thus, the amount of air can be dosed.
Besonders vorteilhaft ist es, wenn dabei das Einlassventil und das Auslassventil dieses Arbeitszylinders mittels einer variablen Ventilsteuerung angesteuert werden, wodurch im Gegensatz zu einer starren Ventilsteuerung, abhängig vom Bedarf, der Zeitpunkt der Bereitstellung als auch die Luftmenge vorbestimmt werden kann.It is particularly advantageous if the inlet valve and the outlet valve of this working cylinder are controlled by means of a variable valve control, whereby, in contrast to a rigid valve control, depending on the need, the time of provision and the amount of air can be predetermined.
Dies kann besonders vorteilhaft umgesetzt werden, wenn die Ein- und Auslassventile als elektropneumatische Ventile ausgeführt sind. Damit kann eine vollvariable Ansteuerung der Ventile ermöglicht werden.This can be implemented particularly advantageous if the inlet and outlet valves are designed as electropneumatic valves. This allows a fully variable control of the valves are possible.
Werden das Einlassventil und das Auslassventil dieses Arbeitszylinders derart angesteuert werden, dass nach abgeschlossenem Verbrennungsprozess in diesem Arbeitszylinder die Ein- und Auslassventile kurzzeitig geöffnet werden, kann erreicht werden, dass die Frischluft durch den Arbeitszylinder gepumpt und somit die gleiche Wirkung wie eine separate Sekundärluftpumpe (SLP) erzielt werden kann. Zudem kann zusätzlich Luft bereits sehr früh in den Brennraum eingebracht werden. Dieses Prinzip kann auch bei anderen Motoren mit variabel öffnenden Ventilen eingesetzt werden.If the inlet valve and the outlet valve of this working cylinder are controlled such that after completion of the combustion process in this cylinder the inlet and outlet valves are opened briefly, it can be achieved that the fresh air pumped through the working cylinder and thus the same effect as a separate secondary air pump (SLP ) can be achieved. In addition, additional air can be introduced very early in the combustion chamber. This principle can also be used with other engines with variable opening valves.
In einer weiteren Verfahrensvariante kann auch vorgesehen sein, dass die Lufteinleitung der Druckluft aus dem Druckspeicher mittels eines Ventils eingangsseitig vor einem der Eingangsventile des Arbeitszylinders erfolgt und die Ein- und Auslassventile des Arbeitszylinders kurzzeitig, synchron zur Öffnung des Ventils geöffnet werden. Mit dieser Verfahrensvariante kann einerseits Sekundärluft durch zumindest einen Arbeitszylinder in den Abgaskanal zur schnellen Aufheizung des Katalysators und/oder des Partikelfilters geleitet werden. Andererseits kann durch die eingangsseitige Einleitung von Druckluft zur Bildung des Luft-Kraftstoff-Gemischs erreicht werden, dass der Wirkungsgrad der Brennkraftmaschine ähnlich wie bei einem Kompressor- oder Turboaufgeladenen Motor gesteigert werden.In a further variant of the method can also be provided that the air inlet of the compressed air from the accumulator by means of a valve on the input side of one of the input valves of the working cylinder and the inlet and outlet valves of the working cylinder are briefly opened, synchronously with the opening of the valve. With this variant of the method, on the one hand, secondary air can be conducted through at least one working cylinder into the exhaust gas duct for rapid heating of the catalytic converter and / or of the particulate filter. On the other hand, can be achieved by the input-side introduction of compressed air to form the air-fuel mixture that the efficiency of the internal combustion engine are increased similar to a compressor or turbocharged engine.
Eine besonders bevorzugte Verwendung des Verfahrens, wie es zuvor mit seinen Varianten beschrieben wurde, sieht zur Emissionsverringerung den Einsatz bei Brennkraftmaschinen vor, welche als Druckluft-Hybride ausgelegt sind und bei denen ein Teil der Arbeitszylinder der Brennkraftmaschine zumindest zeitweise zum Erzeugen von komprimierter Luft verwendet werden und die Druckluft in einem bordeigenen Druckspeicher gespeichert wird. Die Umsetzung erfordert kaum Anpassungen am Druckluft-Konzept, da die Ventile sowie der Druckluftbehälter bereits vorhanden sind. Des Weiteren kann das erfindungsgemäße Verfahren bei Systemen mit vollvariablen Ventilsteuerungen angewendet werden.A particularly preferred use of the method, as described above with its variants, provides for emission reduction the use in internal combustion engines, which are designed as compressed air hybrids and in which a part of the working cylinder of the internal combustion engine are at least temporarily used for generating compressed air and the compressed air is stored in an on-board pressure accumulator. The implementation requires little adaptation to the compressed air concept, since the valves and the compressed air tank are already present. Furthermore, the method according to the invention can be used in systems with fully variable valve controls.
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:
Zur beschleunigten Aufheizung des Katalysators
In einer Erweiterung der Anwendung der erfindungsgemäßen Anordnung kann während der Regeneration des Partikelfilters
Alternativ oder in Kombination dazu ist gemäß der Erfindung vorgesehen, dass der Motorblock
Eine erfindungsgemäße Verfahrensvariante sieht vor, dass das Einlassventil
Eine Verfahrensvariante sieht vor, dass die Lufteinleitung der Druckluft aus dem Druckspeicher
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 [0005] DE 2216705 C3 [0005]
- DE 102006015390 A1 [0006] DE 102006015390 A1 [0006]
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011002500A DE102011002500A1 (en) | 2011-01-11 | 2011-01-11 | Method for operating exhaust control system of internal combustion engine, involves introducing partially air into exhaust channel in flow direction of exhaust gases before exhaust gas purifying components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011002500A DE102011002500A1 (en) | 2011-01-11 | 2011-01-11 | Method for operating exhaust control system of internal combustion engine, involves introducing partially air into exhaust channel in flow direction of exhaust gases before exhaust gas purifying components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102011002500A1 true DE102011002500A1 (en) | 2012-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102011002500A Withdrawn DE102011002500A1 (en) | 2011-01-11 | 2011-01-11 | Method for operating exhaust control system of internal combustion engine, involves introducing partially air into exhaust channel in flow direction of exhaust gases before exhaust gas purifying components |
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| Country | Link |
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| DE (1) | DE102011002500A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020126255A1 (en) | 2020-10-07 | 2022-04-07 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine for a motor vehicle and motor vehicle |
| DE102021005417A1 (en) | 2021-11-02 | 2023-05-04 | Mercedes-Benz Group AG | Internal combustion engine for a motor vehicle, in particular for a motor vehicle |
| DE102022116609A1 (en) * | 2022-07-04 | 2024-01-04 | Bayerische Motoren Werke Aktiengesellschaft | Arrangement of a detection device on the outside of a motor vehicle and method |
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 |
| DE102006015390A1 (en) | 2006-04-03 | 2007-10-04 | Robert Bosch Gmbh | Internal combustion engine with secondary air pump assisted supercharger has secondary air source with front connected via first pressure line to exhaust system and via second pressure line to induction pipe of internal combustion engine |
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2011
- 2011-01-11 DE DE102011002500A patent/DE102011002500A1/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 |
| DE102006015390A1 (en) | 2006-04-03 | 2007-10-04 | Robert Bosch Gmbh | Internal combustion engine with secondary air pump assisted supercharger has secondary air source with front connected via first pressure line to exhaust system and via second pressure line to induction pipe of internal combustion engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020126255A1 (en) | 2020-10-07 | 2022-04-07 | Bayerische Motoren Werke Aktiengesellschaft | Internal combustion engine for a motor vehicle and motor vehicle |
| DE102021005417A1 (en) | 2021-11-02 | 2023-05-04 | Mercedes-Benz Group AG | Internal combustion engine for a motor vehicle, in particular for a motor vehicle |
| DE102022116609A1 (en) * | 2022-07-04 | 2024-01-04 | Bayerische Motoren Werke Aktiengesellschaft | Arrangement of a detection device on the outside of a motor vehicle and method |
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