EP1581734B1 - Procede et dispositif de diagnostic des proprietes dynamiques d'une sonde lambda servant a la regulation lambda par cylindres individuels - Google Patents
Procede et dispositif de diagnostic des proprietes dynamiques d'une sonde lambda servant a la regulation lambda par cylindres individuels Download PDFInfo
- Publication number
- EP1581734B1 EP1581734B1 EP03799439A EP03799439A EP1581734B1 EP 1581734 B1 EP1581734 B1 EP 1581734B1 EP 03799439 A EP03799439 A EP 03799439A EP 03799439 A EP03799439 A EP 03799439A EP 1581734 B1 EP1581734 B1 EP 1581734B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lambda
- cylinder
- value
- controllers
- control
- 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 - Lifetime
Links
- 239000000523 sample Substances 0.000 title claims description 30
- 238000000034 method Methods 0.000 title claims description 14
- 239000000446 fuel Substances 0.000 claims description 5
- 230000003139 buffering effect Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 12
- 230000008859 change Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007784 solid electrolyte Substances 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002405 diagnostic procedure Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Images
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
- F02D41/008—Controlling each cylinder individually
-
- 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
Definitions
- the invention relates to a method and a device for diagnosing the dynamic properties of lambda probes with regard to a single-cylinder lambda control according to the preambles of the respective independent claims.
- a lambda control in conjunction with a catalytic converter, is today the most effective emission control method for the gasoline engine. Only in combination with currently available ignition and injection systems can very low Exhaust gas values can be achieved. Legislators in most countries even impose limits on engine exhaust emissions.
- the respective exhaust gas is basically measured and the supplied fuel quantity is corrected immediately, for example, by means of the injection system in accordance with the measurement result.
- the dynamic properties of a lambda probe when new are usually sufficient in a selected operating range. If, however, the dynamic properties of the probe change in such a way that cylinder-specific lambda values can not be resolved, since the response times of the probe increase, the lambda control does not act in an intermeshing manner, although lambda fluctuations are actually present in the exhaust gas. Causes of reduced probe dynamics are, for example.
- the present invention has for its object to provide a method and an apparatus of the type mentioned, which allows a reliable diagnosis of the dynamic properties of a lambda probe with respect to single cylinder lambda control.
- the inventive method provides, in particular, to detect at least one manipulated variable of the lambda control and to compare it with a predefinable maximum threshold and in case of exceeding the maximum threshold, the dynamic behavior of the lambda probe in With regard to the suitability for the cylinder-specific lambda control as insufficient to assess.
- the dynamic properties of the lambda probe are detected in a first variant according to the invention by means of the single cylinder control itself. It is based on the idea that the operation of individual cylinder-individual controller diverges with insufficient dynamic properties and the associated control variables, namely one or more manipulated variables, exceed a predetermined maximum threshold.
- the dynamic behavior of the lambda probe is determined by means of a test function, i. by means of an introduced disturbance or detuning of the current lambda value.
- the test function can be performed once, temporarily periodically or event-controlled.
- the predefinable maximum threshold for a cylinder-specific controller can be exceeded, for example, when the controller is active and the value of the respective manipulated variable exceeds the predefinable amount or the manipulated variable can not be increased at all due to its structure.
- the dynamic properties of the lambda probe in terms of usability for the Single cylinder lambda control considered insufficient.
- the invention further relates to a diagnostic device which operates according to the inventive method.
- the diagnostic routine described below with reference to the figure for detecting the usability or non-operational capability of a lambda probe of a spark-ignition engine is preferably carried out only during the time in which an individual regulator having individual cylinder control is active.
- the test function described below is executed once or several times and the results of the tests are evaluated only as long as the test function is active.
- step 30 it is determined in step 30 whether the engine is running is at all in a suitable for the single-cylinder control and thus for the detection of the dynamic properties of the lambda probe operating condition. If this is not the case, the program jumps back to the beginning of the routine in the form of a loop. Otherwise, the manipulated variables of the individual controllers are monitored 40 and after detecting the manipulated variables is further checked 50 whether at least one of the manipulated variables in amount exceeds a predetermined maximum threshold. If this is not the case, the system jumps back to step 40, possibly including a delay stage 60.
- a next step 70 it is checked whether there is a suitable time for activating the test function. If this is to be answered in the negative, this test 70 is repeated in a loop, also possibly including a delay stage.
- test routine begins with the fact that the currently present values of the manipulated variables of the individual controllers are temporarily stored 80. Thereafter, a disturbance is made to the currently determined lambda values switched on 90 and the manipulated variables of each controller observed or detected 100.
- the dynamic properties of the lambda probe with respect to the individual cylinder control are therefore determined with the aid of the controller function itself and / or the described active test function.
- the lambda of a cylinder is targeted by varying the cylinder-specific fuel measurement by a predefined amount x tune.
- this cylinder trimming must be shown as an additional offset with about the same amount as the trim in the associated cylinder-specific control variable of the single cylinder control. If the resulting manipulated variable change is only a portion y of the stimulated cylinder trim, this means that the lambda probe can no longer fully follow the cylinder-specific fluctuations due to reduced dynamics. If the proportion y falls below a predefinable threshold z, ie an exhaust-relevant residual error x - z can no longer be corrected, an error signal must be output. The resulting exhaust disadvantage is not relevant in this case.
- the invention can be implemented either as hardware or in the form of a control program as part of the engine control.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Testing Of Engines (AREA)
Claims (6)
- Procédé de diagnostic des propriétés dynamiques d'une sonde lambda utilisée au moins de temps en temps pour une régulation du coefficient lambda, individuellement par cylindre,
caractérisé en ce qu'
on saisit au moins une grandeur de réglage de la régulation du coefficient lambda et on compare cette grandeur à un seuil maximum prédéfini et en cas de dépassement du seuil maximum, on considère comme non suffisant le comportement dynamique de la sonde lambda pour l'utiliser pour une régulation du coefficient lambda individuel par cylindre. - Procédé selon la revendication 1,
caractérisé en ce qu'
on désaccorde d'une valeur prédéfinie la valeur du coefficient lambda d'au moins un cylindre et on vérifie si le désaccord correspondant à une valeur prédéfinie se traduit par un décalage ou comme facteur dans la grandeur de réglage du régulateur respectif de la régulation du coefficient lambda. - Procédé selon la revendication 2,
caractérisé en ce qu'
on vérifie si la différence ou la valeur absolue de la différence entre le désaccord et le décalage sont inférieures à un seuil maximum prédéfini. - Procédé selon la revendication 2 ou 3,
caractérisé en ce qu'
on désaccorde la valeur du coefficient lambda par variation de la mesure du carburant individuelle par cylindre. - Procédé selon l'une des revendications 2 à 4,
caractérisé par les étapes suivantes :- reconnaissance d'une plage de fonctionnement appropriée pour la régulation du coefficient lambda individuel par cylindre,- surveillance des grandeurs de réglage des différents régulateurs de coefficient lambda et si une ou plusieurs grandeurs de réglage dépassent en amplitude sa grandeur maximale, on exécute les étapes suivantes :- reconnaissance d'un état de fonctionnement approprié pour mettre en oeuvre les étapes suivantes :- stockage intermédiaire des grandeurs de réglage des différents régulateurs de coefficient lambda,- désaccord de la valeur du coefficient lambda d'au moins un cylindre suivant une valeur prédéfinie,- observation des grandeurs de réglage dans les différents régulateurs de coefficient lambda,- détermination si les régulateurs de coefficient lambda sont en mesure de compenser le désaccord de la valeur du coefficient lambda ou non et au cas où les régulateurs du coefficient lambda le permettent, reprise du désaccord et réinitialisation des différents régulateurs de coefficient lambda avec les grandeurs de réglage mémorisées de façon intermédiaire et dans le cas contraire, émission d'un signal de défaut. - Dispositif de diagnostic pour la mise en oeuvre du procédé selon l'une des revendications précédentes.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260721A DE10260721A1 (de) | 2002-12-23 | 2002-12-23 | Verfahren und Vorrichtung zur Diagnose der dynamischen Eigenschaften einer zur zylinderindividuellen Lambdaregelung verwendeten Lambdasonde |
DE10260721 | 2002-12-23 | ||
PCT/DE2003/004250 WO2004059152A1 (fr) | 2002-12-23 | 2003-12-19 | Procede et dispositif de diagnostic des proprietes dynamiques d'une sonde lambda servant a la regulation lambda par cylindres individuels |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1581734A1 EP1581734A1 (fr) | 2005-10-05 |
EP1581734B1 true EP1581734B1 (fr) | 2008-03-26 |
Family
ID=32602436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03799439A Expired - Lifetime EP1581734B1 (fr) | 2002-12-23 | 2003-12-19 | Procede et dispositif de diagnostic des proprietes dynamiques d'une sonde lambda servant a la regulation lambda par cylindres individuels |
Country Status (6)
Country | Link |
---|---|
US (1) | US7481104B2 (fr) |
EP (1) | EP1581734B1 (fr) |
JP (1) | JP4369872B2 (fr) |
CN (1) | CN100449130C (fr) |
DE (2) | DE10260721A1 (fr) |
WO (1) | WO2004059152A1 (fr) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005027990B4 (de) * | 2005-06-17 | 2007-05-10 | Audi Ag | Vorrichtung zur dynamischen Überprüfung einer Abgassonde |
DE102005045932A1 (de) | 2005-09-26 | 2007-03-29 | Robert Bosch Gmbh | Gerät und Verfahren zur Diagnose einer technischen Vorrichtung |
DE102006061117B3 (de) * | 2006-12-22 | 2007-08-02 | Audi Ag | Verfahren zur Phasenadaption einer zylinderselektiven Lambdaregelung bei einer mehrzylindrigen Brennkraftmaschine |
DE102007042086B4 (de) * | 2007-09-05 | 2014-12-24 | Continental Automotive Gmbh | Testverfahren für eine Abgassonde einer Brennkraftmaschine, insbesondere für eine Lambda-Sonde |
DE102007045984A1 (de) | 2007-09-26 | 2009-04-02 | Continental Automotive Gmbh | Verfahren zur Ermittlung der dynamischen Eigenschaften eines Abgassensors einer Brennkraftmaschine |
DE102008001569B4 (de) * | 2008-04-04 | 2021-03-18 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Adaption eines Dynamikmodells einer Abgassonde |
DE102008001213A1 (de) | 2008-04-16 | 2009-10-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Diagnose der Dynamik eines Abgassensors |
DE102008001579A1 (de) | 2008-05-06 | 2009-11-12 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Diagnose der Dynamik einer Breitband-Lambdasonde |
DE102008042549B4 (de) | 2008-10-01 | 2018-03-22 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Diagnose einer Abgassonde |
DE102008058008B3 (de) | 2008-11-19 | 2010-02-18 | Continental Automotive Gmbh | Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102009045376A1 (de) | 2009-10-06 | 2011-04-07 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Diagnose der Dynamik eines Abgassensors |
DE102009047648B4 (de) | 2009-12-08 | 2022-03-03 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Diagnose von Abweichungen bei einer Einzelzylinder-Lambdaregelung |
DE102009054935B4 (de) | 2009-12-18 | 2022-03-10 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Diagnose der Dynamik eines Abgassensors |
DE102011002782B3 (de) * | 2011-01-17 | 2012-06-21 | Continental Automotive Gmbh | Vefahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
US8499624B1 (en) * | 2012-02-16 | 2013-08-06 | Delphi Technologies, Inc. | Method to determine performance characteristic of an engine exhaust system |
DE102013216223A1 (de) * | 2013-08-15 | 2015-02-19 | Robert Bosch Gmbh | Universell einsetzbare Steuer- und Auswerteeinheit insbesondere zum Betrieb einer Lambdasonde |
DE102014208585A1 (de) | 2014-05-07 | 2015-11-12 | Continental Automotive Gmbh | Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102014216844B3 (de) * | 2014-08-25 | 2015-10-22 | Continental Automotive Gmbh | Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE102019100577B3 (de) | 2019-01-11 | 2019-12-19 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Überwachung von Sensorsignalen und quantitative Ermittlung des stöchiometrischen Kraftstoff-Luftverhältnisses des gefahrenen Kraftstoffs mittels Injektortest und Katalysatordiagnose in einem Fahrzeug |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3816520A1 (de) | 1988-05-14 | 1989-11-23 | Bosch Gmbh Robert | Regelverfahren und -vorrichtung, insbesondere lambdaregelung |
DE4140618A1 (de) * | 1991-12-10 | 1993-06-17 | Bosch Gmbh Robert | Verfahren und vorrichtung zur ermittlung der konvertierungsfaehigkeit eines katalysators |
DE4236008C2 (de) | 1992-10-24 | 2002-03-28 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur adaptiven Einzelzylinder-Lambdaregelung bei einem Motor mit variabler Ventilsteuerung |
JP3729295B2 (ja) | 1996-08-29 | 2005-12-21 | 本田技研工業株式会社 | 内燃機関の空燃比制御装置 |
DE19733107C2 (de) * | 1997-07-31 | 2003-02-13 | Siemens Ag | Verfahren zur Überprüfung der Funktionsfähigkeit einer Lambdasonde |
DE19734073C1 (de) | 1997-08-06 | 1998-11-12 | Fraunhofer Ges Forschung | Vorrichtung und Verfahren zur Reinigung der Rumpfaußenfläche von Schiffen |
DE19734072C2 (de) * | 1997-08-06 | 2001-12-13 | Iq Mobil Electronics Gmbh | Lambda-Regelung für Einspritzanlagen mit adaptivem Filter |
DE19734670C1 (de) * | 1997-08-11 | 1999-05-27 | Daimler Chrysler Ag | Verfahren zur Vertauschprüfung von Lambdasonden |
DE19856367C1 (de) * | 1998-12-07 | 2000-06-21 | Siemens Ag | Verfahren zur Reinigung des Abgases mit Lambda-Regelung |
DE19903721C1 (de) * | 1999-01-30 | 2000-07-13 | Daimler Chrysler Ag | Betriebsverfahren für eine Brennkraftmaschine mit Lambdawertregelung und Brennkraftmaschine |
DE10038338A1 (de) * | 2000-08-05 | 2002-02-14 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Überwachung eines Sensors |
DE10128969C1 (de) * | 2001-06-15 | 2002-12-12 | Audi Ag | Verfahren zur Diagnose einer Führungssonde |
DE10130054B4 (de) * | 2001-06-21 | 2014-05-28 | Volkswagen Ag | Abgasanlage einer mehrzylindrigen Verbrennungskraftmaschine und Verfahren zur Reinigung eines Abgases |
DE10161901B4 (de) * | 2001-12-17 | 2010-10-28 | Volkswagen Ag | Verfahren und Vorrichtung zur Kompensation des Offsets der linearen Sensorcharakteristik eines im Abgas einer Verbrennungskraftmaschine angeordneten Sensors |
DE10206402C1 (de) * | 2002-02-15 | 2003-04-24 | Siemens Ag | Verfahren zur zylinderselektiven Lambdaregelung |
JP2005147140A (ja) * | 2003-11-14 | 2005-06-09 | Robert Bosch Gmbh | 内燃機関のミスファイアの検知方法及び運転装置 |
DE102005054735B4 (de) * | 2005-11-17 | 2019-07-04 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
-
2002
- 2002-12-23 DE DE10260721A patent/DE10260721A1/de not_active Ceased
-
2003
- 2003-12-19 US US10/540,651 patent/US7481104B2/en not_active Expired - Lifetime
- 2003-12-19 CN CNB2003801004207A patent/CN100449130C/zh not_active Expired - Fee Related
- 2003-12-19 EP EP03799439A patent/EP1581734B1/fr not_active Expired - Lifetime
- 2003-12-19 JP JP2004562496A patent/JP4369872B2/ja not_active Expired - Lifetime
- 2003-12-19 WO PCT/DE2003/004250 patent/WO2004059152A1/fr active IP Right Grant
- 2003-12-19 DE DE50309504T patent/DE50309504D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2006511752A (ja) | 2006-04-06 |
US7481104B2 (en) | 2009-01-27 |
EP1581734A1 (fr) | 2005-10-05 |
WO2004059152A1 (fr) | 2004-07-15 |
JP4369872B2 (ja) | 2009-11-25 |
US20060170538A1 (en) | 2006-08-03 |
CN1692218A (zh) | 2005-11-02 |
CN100449130C (zh) | 2009-01-07 |
DE10260721A1 (de) | 2004-07-29 |
DE50309504D1 (de) | 2008-05-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1581734B1 (fr) | Procede et dispositif de diagnostic des proprietes dynamiques d'une sonde lambda servant a la regulation lambda par cylindres individuels | |
DE102008001569B4 (de) | Verfahren und Vorrichtung zur Adaption eines Dynamikmodells einer Abgassonde | |
DE19844994C2 (de) | Verfahren zur Diagnose einer stetigen Lambdasonde | |
EP1228301B1 (fr) | Procede pour controler le pot catalytique de gaz d'echappement d'un moteur a combustion interne | |
DE102008042549B4 (de) | Verfahren und Vorrichtung zur Diagnose einer Abgassonde | |
DE4233977C2 (de) | Gerät zur Erfassung der Verschlechterung eines Katalysators für einen Verbrennungsmotor | |
DE69634580T2 (de) | Feststellungsvorrichtung der Katalysatorverschlechterung einer Brennkraftmaschine | |
DE19636415B4 (de) | Verfahren und Vorrichtung zur Überwachung der Funktionsweise eines Kohlenwasserstoffsensors für eine Brennkraftmaschine | |
DE102016211506A1 (de) | Verfahren und Vorrichtung zur Überwachung der Funktionsfähigkeit einer Abgasreinigungsanlage | |
DE102004017274B4 (de) | Verbesserte Diagnose eines mehrreihigen, katalytischen Abgassystems | |
DE102008001213A1 (de) | Verfahren und Vorrichtung zur Diagnose der Dynamik eines Abgassensors | |
DE3634873A1 (de) | Verfahren zum bestimmen der eignung eines abgaskonzentrationssensors | |
DE102009045376A1 (de) | Verfahren und Vorrichtung zur Diagnose der Dynamik eines Abgassensors | |
DE19926139A1 (de) | Kalibrierung eines NOx-Sensors | |
DE102009046232A1 (de) | Verfahren zur Diagnose eines NOx-Messwertaufnehmers | |
EP0530655B1 (fr) | Méthode et dispositif de régulation d'un moteur à combustion interne avec contrÔle de son catalysateur | |
DE102009054935B4 (de) | Verfahren und Vorrichtung zur Diagnose der Dynamik eines Abgassensors | |
DE10244125B4 (de) | Verfahren zur Bewertung des Zeitverhaltens eines NOx-Sensors | |
DE102004029301A1 (de) | Referenzspannungsdiagnose zur Verwendung in einer Steuereinheit für Kraftfahrzeuge | |
WO1994028292A1 (fr) | Procede de controle de l'efficacite d'un catalyseur | |
DE102016210143A1 (de) | Verfahren zur Ermittlung eines Alterungszustands eines NOx-Speicherkatalysators einer Abgasnachbehandlungsanlage eines für einen Magerbetrieb ausgelegten Verbrennungsmotors sowie Steuerungseinrichtung | |
DE102007035168B4 (de) | Überwachen eines Nockenprofilumschaltsystems in Verbrennungsmotoren | |
DE102022129061A1 (de) | Verfahren zur Diagnose eines Katalysators mit Sauerstoffspeicherfähigkeit | |
DE10257059B4 (de) | Verfahren und Vorrichtung zur Diagnose von Katalysatoreinheiten | |
EP1143131A2 (fr) | Système d'échappement multiple et procédé pour la régulation du rapport air/carburant et pour le contrôle de la régénération d'un catalyseur d'accumulation des oxydes d'azote |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20050725 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR IT |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR IT |
|
REF | Corresponds to: |
Ref document number: 50309504 Country of ref document: DE Date of ref document: 20080508 Kind code of ref document: P |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20081230 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 14 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20191216 Year of fee payment: 17 Ref country code: FR Payment date: 20191218 Year of fee payment: 17 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20200221 Year of fee payment: 17 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 50309504 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201219 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20201231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210701 |