DE102010029262A1 - Internal combustion engine e.g. Otto or diesel engine, exhaust system operating method for diesel motor car, involves operating burner for heating effluent stream for defrosting exhaust gas sensor - Google Patents
Internal combustion engine e.g. Otto or diesel engine, exhaust system operating method for diesel motor car, involves operating burner for heating effluent stream for defrosting exhaust gas sensor Download PDFInfo
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- DE102010029262A1 DE102010029262A1 DE102010029262A DE102010029262A DE102010029262A1 DE 102010029262 A1 DE102010029262 A1 DE 102010029262A1 DE 102010029262 A DE102010029262 A DE 102010029262A DE 102010029262 A DE102010029262 A DE 102010029262A DE 102010029262 A1 DE102010029262 A1 DE 102010029262A1
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- exhaust gas
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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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—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
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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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1493—Details
- F02D41/1494—Control of sensor heater
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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
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/20—Sensor having heating means
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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, e.g. catalysed diesel particulate filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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 ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
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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 ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
Description
Stand der TechnikState of the art
Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Anspruchs 1, sowie ein Computerprogramm und eine Steuer- und/oder Regeleinrichtung nach den nebengeordneten Patentansprüchen.The invention relates to a method according to the preamble of claim 1, and a computer program and a control and / or regulating device according to the independent claims.
Vom Markt her sind Brennkraftmaschinen mit einem Abgassystem bekannt, in denen beispielsweise Lambdasonden zur Analyse des Abgases eingesetzt werden. Um die erforderliche Genauigkeit zu ermöglichen und insbesondere um die Lambdasonde nicht zu beschädigen, muss die Lambdasonde bzw. deren aktive Oberfläche frei von flüssigen Substanzen sein. Beispielsweise können kleinste Wassertröpfchen durch Betauung auf die Oberfläche der Lambdasonde gelangen.From the market, internal combustion engines with an exhaust system are known in which, for example, lambda sensors are used for the analysis of the exhaust gas. In order to allow the required accuracy and in particular not to damage the lambda probe, the lambda probe or its active surface must be free of liquid substances. For example, smallest water droplets can reach the surface of the lambda probe due to condensation.
Üblich ist es daher, nach einem Start der Brennkraftmaschine die betriebsbedingte Aufheizung des Abgases zu nutzen, um die Abgassonde von einem eventuellen Kondensat zu befreien und danach die Abgassonde zu aktivieren. Dabei ist es ein häufiges Verfahren, die Temperatur der Lambdasonde oder ihrer Umgebung in dem Abgassystem zu ermitteln, um eine mögliche Rest-Betauung auszuschließen und somit die Lambdasonde gefahrlos aktivieren zu können. Die Temperatur kann zum Beispiel durch einen Temperatursensor gemessen oder mittels eines modellbasierten Ansatzes berechnet werden. Temperatursensoren weisen spezifische Zeitkonstanten auf, die berücksichtigt werden müssen und modellbasierte Berechnungen erfordern häufig einen erheblichen Applikationsaufwand.It is therefore customary to use the operational heating of the exhaust gas after a start of the internal combustion engine in order to free the exhaust gas probe from a possible condensate and then to activate the exhaust gas probe. It is a common procedure to determine the temperature of the lambda probe or its environment in the exhaust system in order to exclude a possible residual condensation and thus to be able to activate the lambda probe safely. For example, the temperature may be measured by a temperature sensor or calculated using a model-based approach. Temperature sensors have specific time constants that must be taken into account, and model-based calculations often require considerable application effort.
Offenbarung der ErfindungDisclosure of the invention
Das der Erfindung zugrunde liegende Problem wird durch ein Verfahren nach Anspruch 1 sowie durch ein Computerprogramm und eine Steuer- und/oder Regeleinrichtung nach den nebengeordneten Ansprüchen gelöst. Vorteilhafte Weiterbildungen sind in Unteransprüchen angegeben. Für die Erfindung wichtige Merkmale finden sich ferner in der nachfolgenden Beschreibung und in den Zeichnungen, wobei die Merkmale sowohl in Alleinstellung als auch in unterschiedlichen Kombinationen für die Erfindung wichtig sein können, ohne dass hierauf nochmals explizit hingewiesen wird.The problem underlying the invention is achieved by a method according to claim 1 and by a computer program and a control and / or regulating device according to the independent claims. Advantageous developments are specified in subclaims. Features which are important for the invention can also be found in the following description and in the drawings, wherein the features, both alone and in different combinations, can be important for the invention, without being explicitly referred to again.
Das erfindungsgemäße Verfahren weist den Vorteil auf, dass die Abgassonde in einer Abgasanlage einer Brennkraftmaschine schneller aktiviert werden kann. Dabei eignet sich das Verfahren vorteilhaft auch für Abgasanlagen, welche ein eigenes Steuergerät aufweisen und vergleichsweise autark arbeiten.The inventive method has the advantage that the exhaust gas probe can be activated faster in an exhaust system of an internal combustion engine. The method is also advantageous for exhaust systems, which have their own control unit and operate relatively independently.
Die Erfindung beruht auf dem Ansatz, das in der Abgasanlage strömende Abgas – insbesondere nach einem Kaltstart der Brennkraftmaschine – mit Hilfe eines Brenners schneller aufzuheizen und damit die Abgassonde entsprechend schneller in Betrieb nehmen zu können, also zu aktivieren. Dabei wird berücksichtigt, dass die Abgasanlage einen solchen Brenner und eine zugehörige Frischluftversorgung häufig bereits aufweist, welche beispielsweise auch zur Regeneration von Dieselpartikelfiltern verwendet werden.The invention is based on the approach, the exhaust gas flowing in the exhaust system - especially after a cold start of the engine - to heat faster by means of a burner and thus take the exhaust probe correspondingly faster to operate, so to activate. It is taken into account that the exhaust system often already has such a burner and an associated fresh air supply, which are also used for example for the regeneration of diesel particulate filters.
Der Brenner ist stromaufwärts vorzugsweise nahe der Abgassonde angeordnet, und kann das Abgas und somit die Abgassonde entsprechend schnell aufheizen. Eine solche für das Verfahren besonders günstige Anordnung findet sich beispielsweise in vorbekannten Abgasanlagen von stationären Brennkraftmaschinen oder von bestimmten sog. ”off-highway”-Kraftfahrzeugen, etwa stromabwärts eines Turboladers und stromaufwärts eines Diesel-Oxidationskatalysators. Dadurch lässt sich das Verfahren besonders kostengünstig einrichten, weil keine oder wenig bauliche Anpassungen in der Abgasanlage erforderlich sind, sondern das Verfahren im Wesentlichen durch eine Ergänzung der vorhandenen Steuer- und/oder Regeleinrichtung realisiert werden kann.The burner is preferably located upstream near the exhaust gas probe, and can heat the exhaust gas and thus the exhaust gas probe accordingly fast. Such a particularly favorable arrangement for the method is found, for example, in known exhaust systems of stationary internal combustion engines or of certain so-called "off-highway" motor vehicles, for example downstream of a turbocharger and upstream of a diesel oxidation catalytic converter. As a result, the method can be set up particularly cost-effectively, because no or little structural adjustments in the exhaust system are required, but the method can be realized essentially by supplementing the existing control and / or regulating device.
Erfindungsgemäß wird der Brenner solange betätigt, bis die Anwesenheit flüssiger Substanzen auf der Oberfläche der Abgassonde und/oder in der Umgebung der Abgassonde nicht mehr zu erwarten ist und die Abgassonde demnach abgetaut ist. Danach können der Brenner abgeschaltet und die Abgassonde in Betrieb genommen werden. Flüssige Substanzen – insbesondere kleinste Wassertröpfchen – können sich beispielsweise durch Kondensation auf der Abgassonde niederschlagen, vor allem, wenn die Brennkraftmaschine kalt gestartet wird. Kondensation tritt auf, wenn ein jeweiliger Taupunkt unterschritten ist, so dass der beispielsweise im Abgas strömende Wasserdampf wenigstens teilweise von der gasförmigen in die flüssige Phase übergehen und sich an kälteren Elementen niederschlagen kann (Betauung).According to the invention, the burner is actuated until the presence of liquid substances on the surface of the exhaust gas probe and / or in the vicinity of the exhaust gas probe is no longer expected and the exhaust gas probe is therefore defrosted. After that, the burner can be switched off and the flue gas probe put into operation. Liquid substances - in particular the smallest water droplets - can be precipitated on the exhaust gas probe, for example by condensation, especially when the internal combustion engine is started cold. Condensation occurs when a respective dew point is below, so that the water vapor flowing, for example, in the exhaust gas at least partially pass from the gaseous to the liquid phase and can precipitate on colder elements (condensation).
Grundsätzlich ist die Erfindung für stationäre oder mobile Brennkraftmaschinen geeignet, wobei die Brennkraftmaschine jeweils als Otto- oder Dieselmotor ausgeführt sein kann. Weiterhin ist das Verfahren auf verschiedenartige Abgassonden anwendbar, beispielsweise auch auf Sonden zur Ermittlung eines Stickoxidanteils im Abgas (so genannte NOx-Sonden). Dabei wird vorausgesetzt, dass diese stromabwärts des Brenners und gegebenenfalls einer dem Brenner zugehörigen Frischluftzufuhr angeordnet sind.In principle, the invention is suitable for stationary or mobile internal combustion engines, wherein the internal combustion engine can be designed in each case as a gasoline or diesel engine. Furthermore, the method is applicable to various exhaust gas probes, for example, to probes for determining a nitrogen oxide content in the exhaust gas (so-called NOx probes). It is assumed that these are arranged downstream of the burner and optionally a burner associated fresh air supply.
Das Verfahren ist besonders sinnvoll anzuwenden, wenn die Brennkraftmaschine für eine Mindestzeit nicht in Betrieb war. Während der Abkühlung der Brennkraftmaschine und der Abgasanlage kann der jeweils restliche Wasserdampf bereits kondensieren und vielfach schon vor einem folgenden Neustart die Oberfläche der Abgassonde betauen. Daher kann durch eine Ermittlung der Dauer des Nichtbetriebs und durch Vergleich mit einer vorgegebenen – beispielsweise empirisch ermittelten – Mindestzeit entschieden werden, ob der Brenner beim Neustart der Brennkraftmaschine erfindungsgemäß betätigt werden soll. Dadurch kann die Betriebssicherheit der Abgassonde verbessert und ihre Beschädigung vermieden werden. Gleichzeitig wird ein unnötiger Betrieb des Brenners mit entsprechenden Emissionen und entsprechendem Kraftstoffverbrauch vermieden.The method is particularly useful to apply when the internal combustion engine for a Minimum time was not in operation. During the cooling of the internal combustion engine and the exhaust system of the remaining water vapor can already condense and often stew the surface of the exhaust probe before a subsequent restart. Therefore, it can be decided by determining the duration of the non-operation and by comparison with a predetermined - for example, empirically determined - minimum time whether the burner is to be operated according to the invention when restarting the internal combustion engine. This can improve the reliability of the exhaust probe and their damage can be avoided. At the same time, unnecessary operation of the burner with corresponding emissions and fuel consumption is avoided.
Die Genauigkeit des Verfahrens wird erhöht, wenn eine Temperatur in einer Umgebung der Abgassonde ermittelt und für eine Bemessung einer Zeitspanne, während der der Brenner zum Abtauen betätigt wird, berücksichtigt wird. Je höher die Temperatur in der Umgebung der Abgassonde ist und je länger diese vorliegt, umso unwahrscheinlicher ist das Vorhandensein von Kondensat auf der Oberfläche der Abgassonde. Entsprechend schnell können der Brenner abgeschaltet und die Abgassonde in Betrieb genommen werden. Fallweise kann die Zeitspanne auch null betragen, was bedeutet, dass die Umgebung der Abgassonde bereits genügend lange heiß war und eine Betätigung des Brenners nicht mehr erforderlich ist. Dadurch können zugleich Kosten gespart werden.The accuracy of the method is increased when a temperature in an environment of the exhaust gas probe is determined and taken into account for a period of time during which the burner is actuated for defrosting. The higher the temperature in the vicinity of the exhaust gas probe and the longer it is present, the less likely is the presence of condensate on the surface of the exhaust gas probe. Accordingly, the burner can be switched off quickly and the exhaust gas probe can be put into operation. In some cases, the time span can also be zero, which means that the environment of the exhaust gas probe has been hot for a long enough time and an operation of the burner is no longer necessary. As a result, costs can be saved at the same time.
Besonders geeignet ist das Verfahren, wenn die Abgassonde eine Lambdasonde eines Abgaskatalysators ist. Lambdasonden, beispielsweise Breitband-Lambdasonden, sind ein wichtiges Element, um die Zusammensetzung des Abgases so einzustellen bzw. zu regeln, dass der Abgaskatalysator optimal wirken kann. Daher ist es wichtig, den Betrieb der Lambdasonde möglichst schnell nach dem Start der Brennkraftmaschine zu ermöglichen und zugleich eine Beschädigung der Lambdasonde zu vermeiden. Dadurch kann die Umwelt geschont und Reparaturkosten vermindert werden.The method is particularly suitable if the exhaust gas probe is a lambda probe of an exhaust gas catalytic converter. Lambda probes, for example broadband lambda probes, are an important element for adjusting the composition of the exhaust gas in such a way that the catalytic converter can optimally act. Therefore, it is important to allow the operation of the lambda probe as soon as possible after the start of the internal combustion engine and at the same time to avoid damage to the lambda probe. This can save the environment and reduce repair costs.
Nachfolgend werden Ausführungsformen der Erfindung unter Bezugnahme auf die Zeichnung erläutert. In der Zeichnung zeigen:Hereinafter, embodiments of the invention will be explained with reference to the drawings. In the drawing show:
Es werden für funktionsäquivalente Elemente und Größen in allen Figuren auch bei unterschiedlichen Ausführungsformen die gleichen Bezugszeichen verwendet.The same reference numerals are used for functionally equivalent elements and sizes in all figures, even in different embodiments.
In der Abgasanlage
Der Brenner
Die Lambdasonde
Man erkennt, dass die Lambdasonde
Zusätzlich kann – vorzugsweise durch den Temperatursensor
In ähnlicher Weise können auch die NOx-Sensoren
Es versteht sich, dass die
In einer zu der
Ausgehend von einem Start-Block
Im Block
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102010029262A DE102010029262A1 (en) | 2010-05-25 | 2010-05-25 | Internal combustion engine e.g. Otto or diesel engine, exhaust system operating method for diesel motor car, involves operating burner for heating effluent stream for defrosting exhaust gas sensor |
Applications Claiming Priority (1)
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DE102010029262A DE102010029262A1 (en) | 2010-05-25 | 2010-05-25 | Internal combustion engine e.g. Otto or diesel engine, exhaust system operating method for diesel motor car, involves operating burner for heating effluent stream for defrosting exhaust gas sensor |
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DE102010029262A1 true DE102010029262A1 (en) | 2011-12-01 |
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DE102010029262A Withdrawn DE102010029262A1 (en) | 2010-05-25 | 2010-05-25 | Internal combustion engine e.g. Otto or diesel engine, exhaust system operating method for diesel motor car, involves operating burner for heating effluent stream for defrosting exhaust gas sensor |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014162049A1 (en) * | 2013-04-03 | 2014-10-09 | Wärtsilä Finland Oy | Nox measuring system and method |
EP3444134A1 (en) * | 2017-08-16 | 2019-02-20 | Eberspächer Exhaust Technology GmbH & Co. KG | Exhaust gas system |
CN111535929A (en) * | 2020-05-08 | 2020-08-14 | 广西玉柴机器股份有限公司 | Method for calculating DPF regeneration compensation value based on fuel consumption |
IT202100017252A1 (en) * | 2021-06-30 | 2022-12-30 | Marelli Europe Spa | METHOD OF CHECKING A BURNER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE |
-
2010
- 2010-05-25 DE DE102010029262A patent/DE102010029262A1/en not_active Withdrawn
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014162049A1 (en) * | 2013-04-03 | 2014-10-09 | Wärtsilä Finland Oy | Nox measuring system and method |
CN105050693A (en) * | 2013-04-03 | 2015-11-11 | 瓦锡兰芬兰有限公司 | Nox measuring system and method |
KR20150137112A (en) * | 2013-04-03 | 2015-12-08 | 바르실라 핀랜드 오이 | Nox measuring system and method |
CN105050693B (en) * | 2013-04-03 | 2016-08-17 | 瓦锡兰芬兰有限公司 | NOx measures system and method |
KR102103049B1 (en) * | 2013-04-03 | 2020-04-21 | 바르실라 핀랜드 오이 | Nox measuring system and method |
CN109404101A (en) * | 2017-08-16 | 2019-03-01 | 埃贝斯佩歇排气技术有限责任两合公司 | Exhaust system |
US20190055870A1 (en) * | 2017-08-16 | 2019-02-21 | Eberspächer Exhaust Technology GmbH & Co. KG | Exhaust system |
EP3444134A1 (en) * | 2017-08-16 | 2019-02-20 | Eberspächer Exhaust Technology GmbH & Co. KG | Exhaust gas system |
US10655520B2 (en) | 2017-08-16 | 2020-05-19 | Eberspächer Exhaust Technology GmbH & Co. KG | Exhaust system |
CN109404101B (en) * | 2017-08-16 | 2020-10-27 | 埃贝斯佩歇排气技术有限责任两合公司 | Exhaust system |
CN111535929A (en) * | 2020-05-08 | 2020-08-14 | 广西玉柴机器股份有限公司 | Method for calculating DPF regeneration compensation value based on fuel consumption |
CN111535929B (en) * | 2020-05-08 | 2022-06-14 | 广西玉柴机器股份有限公司 | Method for calculating DPF regeneration compensation value based on fuel consumption |
IT202100017252A1 (en) * | 2021-06-30 | 2022-12-30 | Marelli Europe Spa | METHOD OF CHECKING A BURNER FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE |
EP4112900A1 (en) | 2021-06-30 | 2023-01-04 | Marelli Europe S.p.A. | Method to control a burner for an exhaust system of an internal combustion engine |
US11686233B2 (en) | 2021-06-30 | 2023-06-27 | Marelli Europe S.P.A. | Method to control a burner for an exhaust system of an internal combustion engine |
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