EP1258620A2 - Method for desulfating an NOx absorber in internal combustion engine - Google Patents

Method for desulfating an NOx absorber in internal combustion engine Download PDF

Info

Publication number
EP1258620A2
EP1258620A2 EP02007800A EP02007800A EP1258620A2 EP 1258620 A2 EP1258620 A2 EP 1258620A2 EP 02007800 A EP02007800 A EP 02007800A EP 02007800 A EP02007800 A EP 02007800A EP 1258620 A2 EP1258620 A2 EP 1258620A2
Authority
EP
European Patent Office
Prior art keywords
knock
fuel
determined
sensitivity
fuel consumption
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.)
Granted
Application number
EP02007800A
Other languages
German (de)
French (fr)
Other versions
EP1258620A3 (en
EP1258620B1 (en
Inventor
Florian Preuss
Stefan Detterbeck
Hanns-Christian Hasenclever
Matthew Dr. Keenan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1258620A2 publication Critical patent/EP1258620A2/en
Publication of EP1258620A3 publication Critical patent/EP1258620A3/en
Application granted granted Critical
Publication of EP1258620B1 publication Critical patent/EP1258620B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock 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
    • F02D41/021—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
    • F02D41/0275—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 NOx trap or adsorbent
    • F02D41/028—Desulfurisation of NOx traps or adsorbent
    • 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
    • F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
    • F01N2570/04—Sulfur or sulfur oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0611—Fuel type, fuel composition or fuel quality
    • F02D2200/0612—Fuel type, fuel composition or fuel quality determined by estimation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/08—Exhaust gas treatment apparatus parameters
    • F02D2200/0818—SOx storage amount, e.g. for SOx trap or NOx trap

Definitions

  • the invention relates to a method for desulfurizing a NO x storage device in an internal combustion engine according to the preamble of claim 1.
  • NO x accumulator in order to reduce the environmental impact and are then regularly eliminated in a regeneration process in the case of a rich mode of operation of the internal combustion engine.
  • NO x sensor can be used to identify the nitrogen oxide load in the storage and thus to control the regeneration process.
  • suitable models can also be used to infer the sulfur loading of the NO x storage.
  • a sulfur loading model is conventionally used to assess the extent of sulfur storage in the NO x storage, the sulfur loading model usually being designed in such a way that an artificial, sufficiently early desulfation is requested and carried out, even for predominantly short distances and in urban use becomes.
  • the object of the present invention is a method of the aforementioned Provide species with a desulfation that meets the needs.
  • a normal model calculation as is already known from the prior art used.
  • the knock signal or the knock control which is in the engine control in is present in most cases, evaluated and a knock sensitivity of the Fuel determined.
  • the amount of fuel used, determined and evaluated in particular during lean operation. On fuel consumption can be done, for example, by evaluating the injection processes or close the tank level evaluation.
  • Size can be determined, which is included in the model calculation and so affects that with a fuel with a high tendency to knock in shorter intervals desulfation is carried out. For a fuel with one less With a high tendency to knock, the desulfation intervals are selected further apart.
  • a map there is a relation between the knock sensitivity and the sulfur concentration in the fuel, depending on the tendency to knock deduces the sulfur concentration.
  • the present invention thus allows a simple and very inexpensive way perform a needs-based adaptation of the desulfation steps.

Abstract

In a process to remove sulfur from an automotive NOx storage trap operated in lean burn mode, a calculation model determines the sulfur removal steps. The steps are modified using information derived from a knock signal and the fuel anti-knock sensitivity, fuel consumption. The fuel consumption is determined during a lean burn phase of motor operation. The fuel consumption is determined since the previous sulfur removal cycle. A relationship is established between the knock-sensitivity and the fuel sulfur concentration. The relationship between knock-sensitivity and sulfur concentration is held in a memory device. A correctional parameter is determined using the knock-sensitivity and fuel consumption. This parameter is incorporated in the calculation model and is determines the sulfur removal process intervals.

Description

Die Erfindung betrifft ein Verfahren zur Desulfatisierung eines NOx-Speichers bei einem Verbrennungsmotor gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for desulfurizing a NO x storage device in an internal combustion engine according to the preamble of claim 1.

Es ist bekannt, Motoren zumindest zum Teil in einem Magermodus zu betreiben, um den Kraftstoffverbrauch zu senken. Bei dieser Betriebsweise werden jedoch Stickstoffoxide frei, die zur Verminderung der Umweltbelastung zunächst in einem sog. NOx-Speicher zwischengespeichert und dann regelmäßig in einem Regenerationsprozeß bei einer fetten Betriebsweise des Verbrennungsmotors beseitigt werden. Üblicherweise kann mit einem sog. NOx-Sensor die Stickoxidbelastung des Speichers erkannt und damit der Regenerationsablauf gesteuert werden.It is known to operate engines at least partially in a lean mode in order to reduce fuel consumption. In this mode of operation, however, nitrogen oxides are released, which are first temporarily stored in a so-called NO x accumulator in order to reduce the environmental impact and are then regularly eliminated in a regeneration process in the case of a rich mode of operation of the internal combustion engine. Typically, the so-called NO x sensor can be used to identify the nitrogen oxide load in the storage and thus to control the regeneration process.

Durch Detektion der Stickoxidbelastung der Abgase nach dem NOx-Speicher kann mittels geeigneter Modelle überdies auf die Schwefelbelastung des NOx-Speichers geschlossen werden.By detecting the nitrogen oxide pollution of the exhaust gases after the NO x storage, suitable models can also be used to infer the sulfur loading of the NO x storage.

Bei Motorsteuersystemen ohne einen NOx-Sensor wird herkömmlicherweise ein Schwefelbeladungsmodell zur Beurteilung des Ausmaßes der Schwefeleinlagerung im NOx-Speicher verwendet, wobei das Schwefelbeladungsmodell üblicherweise so ausgelegt ist, dass auch bei überwiegenden Kurzstrecken und im Stadtbetrieb eine künstliche, ausreichend frühe Desulfatisierung angefordert und durchgeführt wird. In engine control systems without a NO x sensor, a sulfur loading model is conventionally used to assess the extent of sulfur storage in the NO x storage, the sulfur loading model usually being designed in such a way that an artificial, sufficiently early desulfation is requested and carried out, even for predominantly short distances and in urban use becomes.

Diese "künstlich eingeleitete" Desulfatisierung wird also auch dann durchgeführt, wenn der Speicher noch nicht entsprechend stark mit Schwefel beladen ist. Dies führt herkömmlicherweise zu einem höheren Kraftstoffaufwand, da bei den heute üblichen, hochwertigen, schwefelarmen Kraftstoffen zu häufig desulfatisiert wird.This "artificially initiated" desulfation is also carried out if the storage is not yet heavily loaded with sulfur. This traditionally leads to higher fuel consumption, as with today's usual, high-quality, low-sulfur fuels is desulfated too often.

Aufgabe der vorliegenden Erfindung ist es, ein Verfahren der eingangs genannten Art mit einer bedarfsgerechten Desulfatisierung zur Verfügung zu stellen.The object of the present invention is a method of the aforementioned Provide species with a desulfation that meets the needs.

Ansatz bei der vorliegenden Erfindung ist der Gedanke, dass ein Zusammenhang zwischen der Klopfempfindlichkeit und dem Schwefelgehalt eines Kraftstoffs besteht. Zumeist sind nämlich hochschwefelhaltige Kraftstoffe auch wenig klopffest. Die Auswertung der Klopfregelung in Verbindung mit einer Verbrauchsermittelung (z.B. über Einspritzvorgänge oder eine Tankfüllstandsauswertung), findet erfindungsgemäß in die Modellrechnung Eingang, so dass bei einem qualitativ hochwertigen, schwefelarmen Kraftstoff, nicht mit der Häufigkeit, wie bei einem herkömmlichen System, desulfatisiert werden muss. Durch das Erkennen der klopfempfindlichen Kraftstoffe kann somit eine Verbesserung des Modells hinsichtlich des aktuellen Schwefelgehaltes im Tank erreicht werden, was wiederum zu einer exakteren Abschätzung des Verschwefelungsgrades und so zu einer Verringerung des Kraftstoffaufwandes führt. Überdies ist es möglich, einen teueren zusätzlichen NOx-Sensor zu vermeiden. Allgemein ist es also mit der vorliegenden Erfindung ohne weiteres möglich, häufige Desulfatisierungsvorgänge zu vermeiden und trotzdem eine Überladung des NOx-Speichers mit Schwefeloxiden zu verhindern.Approach to the present invention is the idea that there is a connection between the knock sensitivity and the sulfur content of a fuel. Mostly, fuels containing high sulfur are also not very resistant to knock. The evaluation of the knock control in conjunction with a consumption determination (for example via injection processes or a tank fill level evaluation) is incorporated into the model calculation according to the invention, so that in the case of a high-quality, low-sulfur fuel, the frequency does not have to be desulfated, as in a conventional system. By recognizing the knock-sensitive fuels, an improvement of the model with regard to the current sulfur content in the tank can be achieved, which in turn leads to a more precise estimate of the degree of sulfurization and thus to a reduction in fuel consumption. Moreover, it is possible to avoid an expensive additional NO x sensor. In general, it is therefore easily possible with the present invention to avoid frequent desulphation processes and still prevent the NO x accumulator from being overloaded with sulfur oxides.

Bei einer Ausführungsform der vorliegenden Erfindung wird eine normale Modellberechnung, wie sie aus dem Stand der Technik bereits bekannt ist, verwendet. Zudem wird das Klopfsignal oder die Klopfregelung, welche in der Motorsteuerung in den meisten Fällen vorhanden ist, ausgewertet und eine Klopfempfindlichkeit des Kraftstoffes bestimmt. Zudem wird der die Menge des verbrauchten Kraftstoffes, insbesondere während des Magerbetriebs, ermittelt und ausgewertet. Auf den Kraftstoffverbrauch kann man beispielsweise über die Auswertung der Einspritzvorgänge oder die Tankfüllstandsauswertung schließen. Natürlich sind auch andere Möglichkeiten denkbar, wir man auf den Kraftstoffverbrauch allgemein schließen kann. Aus den beiden Größen Klopfempfindlichkeit und Kraftstoffverbrauch kann sodann eine Größe bestimmt werden, die in die Modellrechnung einbezogen wird und sich so auswirkt, dass bei einem Kraftstoff mit hoher Klopfneigung in kürzeren Intervallen eine Desulfatisierung vorgenommen wird. Bei einem Kraftstoff mit einer weniger großen Klopfneigung werden die Desulfatisierungsintervalle weiter auseinander gewählt. In einem Kennfeld ist dabei eine Relation zwischen der Klopfempfindlichkeit und der Schwefelkonzentration im Kraftstoff abgelegt, wobei man je nach Klopfneigung auf die Schwefelkonzentration schließt.In one embodiment of the present invention, a normal model calculation, as is already known from the prior art used. moreover the knock signal or the knock control, which is in the engine control in is present in most cases, evaluated and a knock sensitivity of the Fuel determined. In addition, the amount of fuel used, determined and evaluated in particular during lean operation. On fuel consumption can be done, for example, by evaluating the injection processes or close the tank level evaluation. Of course, there are other options conceivable, we can generally conclude on fuel consumption. Out The two sizes knock sensitivity and fuel consumption can then Size can be determined, which is included in the model calculation and so affects that with a fuel with a high tendency to knock in shorter intervals desulfation is carried out. For a fuel with one less With a high tendency to knock, the desulfation intervals are selected further apart. In a map there is a relation between the knock sensitivity and the sulfur concentration in the fuel, depending on the tendency to knock deduces the sulfur concentration.

Die vorliegende Erfindung erlaubt somit auf einfache und sehr kostengünstige Weise eine bedarfsgerechte Adaption der Desulfatisierungsschritte durchzuführen.The present invention thus allows a simple and very inexpensive way perform a needs-based adaptation of the desulfation steps.

Claims (6)

Verfahren zur Desulfatisierung eines NOx-Speichers bei einem Verbrennungsmotor, der zumindest zum Teil in einem Magermodus betrieben wird, wobei eine Modellrechnung zur Bestimmung eines Desulfatisierungsschrittes durchgeführt wird,
dadurch gekennzeichnet, dass ein Klopfsignal oder eine Klopfregelung ausgewertet und eine Klopfempfindlichkeit des Kraftstoffes bestimmt wird, dass ein Kraftstoffverbrauch bestimmt wird, und dass die Modellberechung in Abhängigkeit von der Klopfempfindlichkeit des Kraftstoffes und der Tankfüllstandsauswertung durchgeführt wird. Method for desulfating a NO x store in an internal combustion engine, which is operated at least in part in a lean mode, a model calculation for determining a desulfating step being carried out,
characterized, that a knock signal or a knock control is evaluated and a knock sensitivity of the fuel is determined, that fuel consumption is determined, and that the model calculation is carried out depending on the knock sensitivity of the fuel and the tank level evaluation. Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass der Kraftstoffverbrauch während des Betriebs im Magermodus bestimmt wird.Method according to claim 1,
characterized in that the fuel consumption is determined during operation in lean mode. Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass der Kraftstoffverbrauch seit der letzten Desulfatisierung bestimmt wird. The method of claim 1 or 2,
characterized in that the fuel consumption has been determined since the last desulfation. Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass eine Relation zwischen der Klopfempfindlichkeit und der Schwefelkonzentration im Kraftstoff bestimmt wird.Method according to one of claims 1 to 3,
characterized in that a relation between the knock sensitivity and the sulfur concentration in the fuel is determined. Verfahren nach Anspruch 4,
dadurch gekennzeichnet, dass die Relation zwischen Klopfempfindlichkeit und Schwefelkonzentration in einem Kennfeld oder einer Kennlinien abgelegt ist.Method according to claim 4,
characterized in that the relationship between knock sensitivity and sulfur concentration is stored in a map or a characteristic curve. Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass aus der Klopfempfindlichkeit und dem Kraftstoffverbrauch ein Korrekturparameter bestimmt wird, der in die Modellrechnung eingeht und die Zeiträume zur und/oder der Desulfatisierung ändert.Method according to one of claims 1 to 5,
characterized in that a correction parameter is determined from the knock sensitivity and the fuel consumption, which is included in the model calculation and changes the periods for and / or desulfating.
EP02007800A 2001-05-16 2002-04-06 Method for desulfating an NOx absorber in internal combustion engine Expired - Lifetime EP1258620B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10123682 2001-05-16
DE10123682A DE10123682A1 (en) 2001-05-16 2001-05-16 Process for desulfurizing a NOx storage device in an internal combustion engine

Publications (3)

Publication Number Publication Date
EP1258620A2 true EP1258620A2 (en) 2002-11-20
EP1258620A3 EP1258620A3 (en) 2005-04-13
EP1258620B1 EP1258620B1 (en) 2006-07-12

Family

ID=7684910

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02007800A Expired - Lifetime EP1258620B1 (en) 2001-05-16 2002-04-06 Method for desulfating an NOx absorber in internal combustion engine

Country Status (3)

Country Link
EP (1) EP1258620B1 (en)
AT (1) ATE333040T1 (en)
DE (2) DE10123682A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1515016A2 (en) * 2003-09-12 2005-03-16 Toyota Jidosha Kabushiki Kaisha Apparatus for controlling exhaust purifying catalyst of internal combustion engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657625A (en) * 1994-06-17 1997-08-19 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Apparatus and method for internal combustion engine control
JP2000073925A (en) * 1998-09-03 2000-03-07 Nippon Soken Inc Knock control device
US6116208A (en) * 1998-09-29 2000-09-12 Mazda Motor Corporation Control system for a direct injection-spark ignition engine
DE10018333A1 (en) * 1999-05-19 2000-11-23 Ford Global Tech Inc Procedure for controlling operation of lean-mix IC engine has determination of characteristic values for incremental NOX amount generated during lean-mix operating state and stored in trap

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657625A (en) * 1994-06-17 1997-08-19 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Apparatus and method for internal combustion engine control
JP2000073925A (en) * 1998-09-03 2000-03-07 Nippon Soken Inc Knock control device
US6116208A (en) * 1998-09-29 2000-09-12 Mazda Motor Corporation Control system for a direct injection-spark ignition engine
DE10018333A1 (en) * 1999-05-19 2000-11-23 Ford Global Tech Inc Procedure for controlling operation of lean-mix IC engine has determination of characteristic values for incremental NOX amount generated during lean-mix operating state and stored in trap

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN Bd. 2000, Nr. 06, 22. September 2000 (2000-09-22) & JP 2000 073925 A (NIPPON SOKEN INC; TOYOTA MOTOR CORP), 7. März 2000 (2000-03-07) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1515016A2 (en) * 2003-09-12 2005-03-16 Toyota Jidosha Kabushiki Kaisha Apparatus for controlling exhaust purifying catalyst of internal combustion engine
EP1515016A3 (en) * 2003-09-12 2006-03-08 Toyota Jidosha Kabushiki Kaisha Apparatus for controlling exhaust purifying catalyst of internal combustion engine

Also Published As

Publication number Publication date
EP1258620A3 (en) 2005-04-13
DE50207467D1 (en) 2006-08-24
ATE333040T1 (en) 2006-08-15
DE10123682A1 (en) 2002-12-19
EP1258620B1 (en) 2006-07-12

Similar Documents

Publication Publication Date Title
DE102011017167B4 (en) Pre-ignition estimation / control apparatus for an internal combustion engine
DE102006056708B4 (en) Method, device and computer program for determining cylinder-specific Verbrennugsmerkmale an internal combustion engine
DE60127013T2 (en) Control to improve the behavior of a vehicle
DE102015102753B4 (en) METHOD FOR REGENERATION OF A PARTICULATE FILTER, REGENERATION SYSTEM FOR A PARTICULATE FILTER AND METHOD FOR SETTING A REGENERATION PROCESS OF A PARTICULATE FILTER
DE10137421B4 (en) Exhaust emission control device and method for an internal combustion engine
DE19726757B4 (en) Method for controlling and / or regulating an internal combustion engine provided with a plurality of combustion chambers
EP1250525B1 (en) Method and device for controlling an internal combustion engine
DE102010035365A1 (en) Method for determining the oxygen storage capacity of a catalytic converter and method for determining a time delay inherent in a lambda sensor
DE19851319C2 (en) Method for determining the raw NOx emission of an internal combustion engine that can be operated with excess air
DE4322344B4 (en) Air / fuel ratio control system for an internal combustion engine
DE4016128A1 (en) METHOD AND DEVICE FOR ADJUSTING THE IGNITION TIMING OF AN INTERNAL COMBUSTION ENGINE
EP1526267A2 (en) Method and device for compensating the drift of an injector for an internal combustion engine with direct injection
DE19926139A1 (en) Calibration of a NOx sensor
DE112008001307B4 (en) Method, arrangement and computer program product for controlling an engine having a VTG turbocharger
WO2002008594A1 (en) Method for operating a catalyst
DE102004006554B3 (en) Cylinder equalization method for fuel injection in automobile engine using adaption of fuel injection parameters via learned adaption values
DE102006043341B4 (en) Method for determining the ethanol content of the fuel in a motor vehicle
DE10063677B4 (en) Method for controlling an internal combustion engine
EP1258620A2 (en) Method for desulfating an NOx absorber in internal combustion engine
DE19513307A1 (en) Apparatus and method for determining the characteristic of a fuel that is supplied to a vehicle engine with internal combustion
DE102008046719B3 (en) Method and device for determining the ethanol content of the fuel in a motor vehicle
DE102016206437B4 (en) Process for the regeneration of a particulate filter in the exhaust system of an internal combustion engine
DE10313216B4 (en) Method for operating a nitrogen oxide (NOx) storage catalytic converter arranged in the exhaust region of an internal combustion engine
DE102013223734A1 (en) Method for controlling an exhaust gas recirculation rate in an exhaust gas recirculation path of a motor vehicle having an internal combustion engine
DE102007061229A1 (en) Control strategy adjusting method for combustion controlling of high power-diesel internal-combustion engine of motor vehicle, involves starting controlling of injectors by null quantity calibration in dependent of variable of controller

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20050513

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

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): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060712

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060712

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20060712

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060712

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

RIN2 Information on inventor provided after grant (corrected)

Inventor name: SCHAEFER, HANS-VOLKER DR.

Inventor name: MUELLER, PETER

Inventor name: RAMATSCHI, STEPHAN

Inventor name: HASENCLEVER, HANNS-CHRISTIAN

Inventor name: DETTERBECK, STEFAN

Inventor name: PREUSS, FLORIAN

Inventor name: KEENAN, MATTHEW, DR.

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50207467

Country of ref document: DE

Date of ref document: 20060824

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20060918

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061012

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061023

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

RIN2 Information on inventor provided after grant (corrected)

Inventor name: SCHAEFER, HANS-VOLKER DR.

Inventor name: MUELLER, PETER

Inventor name: HASENCLEVER, HANNS-CHRISTIAN

Inventor name: DETTERBECK, STEFAN

Inventor name: PREUSS, FLORIAN

Inventor name: KEENAN, MATTHEW, DR.

Inventor name: RAMATSCHI, STEPHAN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061212

ET Fr: translation filed
NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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: 20070413

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

BERE Be: lapsed

Owner name: BAYERISCHE MOTOREN WERKE A.G.

Effective date: 20070430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20061013

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060712

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20070406

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090606

Year of fee payment: 8

Ref country code: FR

Payment date: 20090429

Year of fee payment: 8

Ref country code: IT

Payment date: 20090429

Year of fee payment: 8

Ref country code: SE

Payment date: 20090407

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060712

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20090430

Year of fee payment: 8

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100406

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100430

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: 20101103

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: 20100406

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100407