DE102005027990B4 - Device for dynamically checking an exhaust gas probe - Google Patents
Device for dynamically checking an exhaust gas probe Download PDFInfo
- Publication number
- DE102005027990B4 DE102005027990B4 DE102005027990A DE102005027990A DE102005027990B4 DE 102005027990 B4 DE102005027990 B4 DE 102005027990B4 DE 102005027990 A DE102005027990 A DE 102005027990A DE 102005027990 A DE102005027990 A DE 102005027990A DE 102005027990 B4 DE102005027990 B4 DE 102005027990B4
- Authority
- DE
- Germany
- Prior art keywords
- exhaust gas
- duct system
- cylinder
- internal combustion
- combustion engine
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- 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
-
- 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
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
-
- 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
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/20—Dimensional characteristics of tubes, e.g. length, diameter
-
- 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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/10—Two or more expansion chambers in parallel
-
- 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
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/18—Dimensional characteristics of gas chambers
-
- 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
-
- 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
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
-
- 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
- F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Silencers (AREA)
- Testing Of Engines (AREA)
Abstract
Vorrichtung
zur dynamischen Überprüfung einer
Abgassonde, mit einer mehrzylindrigen Brennkraftmaschine, deren
Zylinder zumindest teilweise unterschiedliche Abgaszusammensetzungen
liefern, und einem Abgaskanalsystem, welches das Abgas der Brennkraftmaschine
zumindest teilweise aufnimmt und eine Positionsöffnung für die zu überprüfende Abgassonde aufweist,
dadurch
gekennzeichnet, dass
das Abgaskanalsystem (2) an zwei um 360
Grad Kurbelwellenwinkel versetzt zueinander arbeitende Zylinder
(II, III bzw. I, IV) der Brennkraftmaschine (1) angeschlossen ist,
ein
erster Zweig (3) des Abgaskanalsystems (2) an den einen Zylinder
(II bzw. I) und ein zweiter Zweig (3') des Abgaskanalsystems (2)
an den anderen Zylinder (III bzw. IV) angebunden ist,
ein motornaher
Prüfkanal
(4) die beiden Zweige (3, 3') verbindet, und
die Positionsöffnung (5)
für die
Abgassonde (6) in dem Prüfkanal
(4) angeordnet ist.Device for dynamic testing of an exhaust gas probe, comprising a multi-cylinder internal combustion engine whose cylinders at least partially supply different exhaust gas compositions, and an exhaust gas duct system which at least partially receives the exhaust gas of the internal combustion engine and has a position opening for the exhaust gas probe to be checked,
characterized in that
the exhaust gas duct system (2) is connected to two cylinders (II, III or I, IV) of the internal combustion engine (1) which are offset from each other by 360 degrees crankshaft angle,
a first branch (3) of the exhaust gas duct system (2) is connected to one cylinder (II or I) and a second branch (3 ') of the exhaust gas duct system (2) is connected to the other cylinder (III or IV),
a motor near test channel (4) connects the two branches (3, 3 '), and
the position opening (5) for the exhaust gas probe (6) is arranged in the test channel (4).
Description
Die vorliegende Erfindung betrifft eine Vorrichtung zur dynamischen Überprüfung einer Abgassonde, mit einer mehrzylindrigen Brennkraftmaschine, deren Zylinder zumindest teilweise unterschiedliche Abgaszusammensetzungen liefern, und mit einem Abgaskanalsystem, welches das Abgas der Brennkraftmaschine zumindest teilweise aufnimmt und eine Positionsöffnung für die zu überprüfende Abgassonde aufweist.The The present invention relates to a device for dynamically checking a Exhaust probe, with a multi-cylinder internal combustion engine whose Cylinder at least partially different exhaust gas compositions supply, and with an exhaust gas passage system, which the exhaust gas of the internal combustion engine at least partially receives and has a position opening for the exhaust gas probe to be tested.
Ein
Verfahren und eine Vorrichtung zum statischen Prüfen und Eichen von Sensorelementen
ist aus der Druckschrift
Darüber hinaus
ist in der Druckschrift
Und
schließlich
ist aus der Druckschrift
Vor diesem Hintergrund ist es Aufgabe der vorliegenden Erfindung eine verbesserte Vorrichtung zur dynamischen Überprüfung einer Abgassonde bereitzustellen, die es ermöglicht, dass die Abgassonde mit einem zeitlich sehr schnell zwischen zwei verschiedenen Zusammensetzungen wechselnden Abgas beaufschlagt wird und dabei dennoch eine sehr genaue Überprüfung der tatsächlichen dynamischen Eigenschaften der Abgassonde ermöglicht.In front This is the object of the present invention to provide an improved device for dynamically checking an exhaust gas probe, which makes it possible that the exhaust probe with a very fast time between two different compositions alternating exhaust gas is applied while doing a very accurate review of the actual dynamic properties of the exhaust probe allows.
Zur Lösung dieser Aufgabe ist bei der Vorrichtung zur dynamischen Überprüfung der Abgassonde vorgesehen, dass das Abgaskanalsystem an zwei um 360 Grad Kurbelwellenwinkel versetzt zueinander arbeitende Zylinder der Brennkraftmaschine angeschlossen ist, ein erster Zweig des Abgaskanalsystems an den einen Zylinder und ein zweiter Zweig an den anderen Zylinder angebunden ist, ein motornaher Prüfkanal die beiden Zweige des Abgaskanalsystems verbindet und die Positionsöffnung für die zu überprüfende Abgassonde in dem Prüfkanal angeordnet ist. Durch die Positionierung der Abgassonde in einem motornahen Prüfkanal, der einen Übersprecher zwischen den beiden Zweigen des Abgaskanalsystems bildet, wird eine schnell wechselnde Beaufschlagung der Abgassonde mit den unterschiedlichen Abgaszusammensetzungen der beiden Zylinder verwirklicht, ohne dass sich die in gleichen Abständen zeitlich aufeinanderfolgenden unterschiedlichen Abgaszusammensetzungen miteinander vermischen. Dabei weist zum Beispiel das von dem einen Zylinder gelieferte Abgas einen konstant fetten Lambdawert von 0,93 auf und weist das von dem anderen Zylinder gelieferte Abgas einen konstant mageren Lambdawert von 1,07 auf, so dass die in dem Prüfkanal angeordnete Abgassonde bei einer guten Übergangscharakteristik abwechselnd einen Lambdawert von 0,93 und 1,07 anzeigen müsste, wobei die Übergangscharakteristik von der Differenz der beiden Lambdawerte und der Drehzahl der Brennkraftmaschine abhängig ist.to solution This object is in the device for dynamic verification of Exhaust probe provided that the exhaust duct system at two by 360 Degree crankshaft angle offset from each other working cylinder the internal combustion engine is connected, a first branch of the exhaust duct system to one cylinder and a second branch to the other cylinder is connected, a motor - near test channel the two branches of Exhaust duct system connects and arranged the position opening for the exhaust gas probe to be tested in the test channel is. Due to the positioning of the exhaust gas probe in a near-engine test channel, the one crosstalk forms between the two branches of the exhaust duct system is a rapidly changing admission of the exhaust gas probe with the different Realized exhaust gas compositions of the two cylinders, without the same distances temporally successive different exhaust gas compositions mix with each other. In this case, for example, that of the one Cylinder supplied exhaust a constantly rich lambda value of 0.93 and has the exhaust gas supplied from the other cylinder one constant lean lambda value of 1.07, so that the arranged in the test channel Exhaust gas probe with a good transition characteristic alternately would have to display a lambda value of 0.93 and 1.07, where the transitional characteristic from the difference between the two lambda values and the speed of the internal combustion engine dependent is.
Zweckmäßig beträgt der Querschnitt des Prüfkanals etwa die Hälfte des Querschnitts der Auslassventilöffnung eines Zylinders der Brennkraftmaschine. Durch die verhältnismäßig kleine Dimensionierung des Prüfkanals ist einerseits gewährleistet, dass abwechselnd Abgas aus dem einen Zylinder und dem anderen Zylinder teilweise durch den Prüfkanal strömt und dass andererseits keine unerwünschte Durchmischung des Abgases stromauf des Prüfkanals auftritt.Appropriately, the cross section of the test channel about half the cross section of the exhaust valve opening of a cylinder Internal combustion engine. Due to the relatively small dimensions of the test channel On the one hand it ensures that alternately exhaust gas from one cylinder and the other cylinder partly through the test channel flows and on the other hand, no undesirable mixing of the exhaust gas upstream of the test channel occurs.
Ist stromauf des Prüfkanals im ersten Zweig des Abgaskanalsystems eine erste Referenzsonde und im zweiten Zweig des Abgaskanalsystems eine zweite Referenzsonde positioniert, so kann genau festgehalten werden, welche Abgaszusammensetzungen jeweils in dem einen Zweig bzw. in dem anderen Zweig des Abgaskanalsystems herrschen und gegebenenfalls eine Korrektur der von den Zylindern gelieferten Abgaszusammensetzung durchgeführt werden. Zudem kann somit auch eine genaue Abschätzung des von der zu überprüfenden Abgassonde theoretisch zu erwartenden Ausgangssignals abgegeben werden.If a first reference probe is positioned upstream of the test channel in the first branch of the exhaust gas channel system and a second reference probe in the second branch of the exhaust gas channel system, it can be precisely stated which exhaust gas compositions prevail in each branch or in the other branch of the exhaust gas channel system and optionally a correction of the performed by the cylinders supplied exhaust gas composition become. In addition, an accurate estimation of the output signal to be theoretically expected by the exhaust gas probe to be tested can therefore also be output.
Vorteilhaft ist in jedem der beiden Zweige des Abgaskanalsystems stromab des Prüfkanals ein Drosselelement vorgesehen. Durch dieses Merkmal wird zusätzlich sichergestellt, dass der Prüfkanal zwischen dem ersten Zweig und dem zweiten Zweig des Abgaskanalsystems in der gewünschten Weise mit dem von den beiden Zylindern gelieferten Abgas durchströmt wird.Advantageous is downstream of each of the two branches of the exhaust duct system test channel a throttle element is provided. This feature additionally ensures that that the test channel between the first branch and the second branch of the exhaust duct system in the desired Way is flowed through with the supplied from the two cylinders exhaust gas.
Besonders vorteilhaft wird der Querschnitt der beiden Zweige des Abgaskanalsystems durch die beiden Drosselelemente jeweils auf einen Querschnitt von etwa der Hälfte des Querschnitts der Auslassventilöffnungen eines Zylinders der Brennkraftmaschine verengt. Bei dieser Dimensionierung wird das von jeweils einem der beiden Zylinder gelieferte und das Abgaskanalsystem durchströmende Abgas etwa hälftig auf die beiden Zweige des Abgaskanalsystems aufgeteilt.Especially advantageous is the cross section of the two branches of the exhaust duct system through the two throttle elements in each case to a cross section of about half the cross section of the exhaust valve openings of a cylinder of Internal combustion engine narrows. In this dimensioning is the supplied by one of the two cylinders and the exhaust gas duct system flowing through Exhaust about half divided on the two branches of the exhaust duct system.
Bevorzugt weisen die beiden Zweige des Abgaskanalsystems stromab des Drosselelements jeweils eine Beruhigungskammer auf. Die Beruhigungskammer dient zur Dämpfung von etwaigen Turbulenzen des gemäß den Auslassventilöffnungszeiten pulsierenden Abgases, um zu vermeiden, dass sich diese Turbulenzen zum Beispiel durch Rückkopplungen in störender Weise auf die Überprüfung der im Prüfkanal befindlichen Abgassonde auswirken.Prefers have the two branches of the exhaust duct system downstream of the throttle element each a calming chamber. The calming chamber is used for damping of any turbulence of the exhaust valve opening timing pulsating exhaust, to avoid that turbulence for example, by feedback in disturbing Way to the review of in the test channel impact the exhaust gas sensor.
Besonders bevorzugt entspricht das Volumen der Beruhigungskammern jeweils etwa dem fünffachen Hubvolumens eines Zylinders der Brennkraftmaschine. Damit kann das in dem Abgaskanalsystem geförderte Abgas ausreichend beruhigt werden.Especially Preferably, the volume of the calming chambers corresponds respectively about five times Stroke volume of a cylinder of the internal combustion engine. This can do that funded in the exhaust duct system Be sufficiently calmed exhaust gas.
Weiterbildungsgemäß vereinen sich die beiden Zweige des Abgaskanalsystems stromab der beiden Beruhigungskammern zu einem Hauptkanal, so dass das an die zwei Zylinder der Brennkraftmaschine angebundene Abgaskanalsystem eine stabile Baueinheit bildet.Combine further education the two branches of the exhaust duct system downstream of the two Soothing chambers to a main channel, so that to the two Cylinder of the engine connected exhaust duct system a stable unit forms.
Gemäß einer anderen Weiterbildung ist das Abgas der übrigen Zylinder der Brennkraftmaschine in einem separaten Nebenkanal des Abgaskanalsystems geführt.According to one Another development is the exhaust gas of the remaining cylinder of the internal combustion engine a separate side channel of the exhaust duct system out.
Die Abgassonde kann insbesondere eine Lambdasonde bzw. eine Sauerstoffsonde sein, da speziell Lambdasonden zur Realisierung der für eine günstige Abgaskonvertierung notwendigen Lambdaregelung von Brennkraftmaschinen eine hohe Dynamik aufweisen müssen.The Exhaust probe can in particular a lambda probe or an oxygen probe be, especially lambda probes to realize the for a favorable exhaust gas conversion necessary lambda control of internal combustion engines high dynamics must have.
Die vorliegende Erfindung wird unter Bezugnahme auf die nachfolgenden Zeichnungsfiguren näher erläutert. Es zeigen:The The present invention will be described with reference to the following Drawing figures closer explained. Show it:
Die
in
Die
mehrzylindrige Brennkraftmaschine
Das
Abgaskanalsystem
Der
Prüfkanal
Stromauf
des Prüfkanals
Stromab
des Prüfkanals
Und
stromab der Drosselelemente
Selbstverständlich kann
das Abgaskanalsystem
Das
in
- 11
- BrennkraftmaschineInternal combustion engine
- 22
- AbgaskanalsystemExhaust duct system
- 3, 3'3, 3 '
- erster Zweig, zweiter Zweigfirst Branch, second branch
- 44
- Prüfkanaltest channel
- 55
- Positionsöffnungposition opening
- 66
- Abgassondegas probe
- 7, 7'7, 7 '
- Referenzsondereference probe
- 8, 8'8th, 8th'
- Drosselelementthrottle element
- 9, 9'9 9 '
- Beruhigungskammersettling chamber
- 1010
- Hauptkanalmain channel
- 1111
- Nebenkanalsecondary channel
- I, II, III, IVI, II, III, IV
-
Zylinder
von
1 Cylinder of1 - λ1λ1
-
Lambdawert
von
7 Lambda value of7 - λ2λ2
-
Lambdawert
von
7' Lambda value of7 ' - λ3, λ3'λ3, λ3 '
-
Lambdawert
von
6 Lambda value of6
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005027990A DE102005027990B4 (en) | 2005-06-17 | 2005-06-17 | Device for dynamically checking an exhaust gas probe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005027990A DE102005027990B4 (en) | 2005-06-17 | 2005-06-17 | Device for dynamically checking an exhaust gas probe |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102005027990A1 DE102005027990A1 (en) | 2006-12-28 |
DE102005027990B4 true DE102005027990B4 (en) | 2007-05-10 |
Family
ID=37513376
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---|---|---|---|
DE102005027990A Expired - Fee Related DE102005027990B4 (en) | 2005-06-17 | 2005-06-17 | Device for dynamically checking an exhaust gas probe |
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Country | Link |
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DE (1) | DE102005027990B4 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10055665A1 (en) * | 2000-11-10 | 2002-10-31 | Volkswagen Ag | Method and device for catalyst heating |
DE10249574A1 (en) * | 2002-10-24 | 2004-05-13 | Robert Bosch Gmbh | Process for testing or calibrating sensor elements for determining concentration of internal combustion engine exhaust gas comprises using the height of a parameter which characterizes the composition of an educt |
DE10260721A1 (en) * | 2002-12-23 | 2004-07-29 | Volkswagen Ag | Method and device for diagnosing the dynamic properties of a lambda probe used for cylinder-specific lambda control |
-
2005
- 2005-06-17 DE DE102005027990A patent/DE102005027990B4/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10055665A1 (en) * | 2000-11-10 | 2002-10-31 | Volkswagen Ag | Method and device for catalyst heating |
DE10249574A1 (en) * | 2002-10-24 | 2004-05-13 | Robert Bosch Gmbh | Process for testing or calibrating sensor elements for determining concentration of internal combustion engine exhaust gas comprises using the height of a parameter which characterizes the composition of an educt |
DE10260721A1 (en) * | 2002-12-23 | 2004-07-29 | Volkswagen Ag | Method and device for diagnosing the dynamic properties of a lambda probe used for cylinder-specific lambda control |
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DE102005027990A1 (en) | 2006-12-28 |
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