EP1508683A2 - Verfahren zum Betreiben einer Brennkraftmaschine - Google Patents
Verfahren zum Betreiben einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP1508683A2 EP1508683A2 EP04103569A EP04103569A EP1508683A2 EP 1508683 A2 EP1508683 A2 EP 1508683A2 EP 04103569 A EP04103569 A EP 04103569A EP 04103569 A EP04103569 A EP 04103569A EP 1508683 A2 EP1508683 A2 EP 1508683A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- storage
- catalytic converter
- regeneration
- exhaust gas
- adaptation
- 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
Links
Images
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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features having two or more separate purifying devices arranged in series
-
- 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
- F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts
-
- 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
- F02D41/0295—Control according to the amount of oxygen that is stored on the exhaust gas treating apparatus
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
-
- 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
- F02D41/146—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 NOx content or concentration
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2496—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories the memory being part of a closed loop
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
- F02D2041/1437—Simulation
-
- 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
- F02D2200/0802—Temperature of the exhaust gas treatment apparatus
- F02D2200/0804—Estimation of the temperature of the exhaust gas treatment apparatus
-
- 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
- F02D2200/0806—NOx storage amount, i.e. amount of NOx stored on NOx trap
-
- 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
- F02D2200/0814—Oxygen storage amount
Definitions
- the invention relates to a method for operating a lean-running internal combustion engine with an arranged in an exhaust tract of the internal combustion engine NO x storage catalytic converter, according to the preamble of claim 1.
- the exhaust gas sensor signals behind the NO x storage catalytic converter are required for the initiation and / or termination of a NO x regeneration of the NO x storage catalytic converter during the lean-burn operation, no liquid water can be left behind the NO x storage catalytic converter until such time is present, the lean operation is not released. Instead, the engine must be operated as long as lambda equal to 1, to ensure the emission safety.
- a method and a device for controlling a NO x regeneration of an arranged in the exhaust line of an internal combustion engine NO x storage catalytic converter in which a front and rear measuring device, a lambda value before and after the NO x storage catalytic converter is detectable. It is provided that the regeneration parameters are set as a function of a catalyst state and a ratio of the lambda values before and after the NO x storage catalytic converter at the end of the NO x regeneration (lambda ratio) (adaptation of the regeneration parameters).
- the invention has for its object to optimize exhaust aftertreatment even in those operating phases in which exhaust gas sensors and in particular a NO x storage downstream of the NO x sensor are not or not yet ready for operation.
- a state of NO x storage capability and an O 2 storage capacity of the NO x storage catalytic converter adapted and determined with the adapted state on the basis of a model for the NO x storage catalytic converter in the fresh state when the NO x storage capability of the NO x storage catalytic converter is exhausted and in this case a regeneration of the NO x storage catalytic converter is required, wherein a reducing agent amount for the implementation of the NO x stored in the NO x storage NO x - and O 2 amount calculated and based the calculated amount of reducing agent, the regeneration of the NO x storage catalyst is performed controlled.
- the adaptation of the state of NO x storage capability and O 2 storage capability of the NO x storage catalytic converter is performed on the basis of sensor signals from exhaust gas sensors in the exhaust gas tract of the internal combustion engine.
- a reducing agent throughput in dependence on an exhaust gas mass flow and a temperature of the NO x storage catalytic converter with the model and / or a map for the NO x storage catalytic converter in the fresh State adapted and determines an end of the controlled NO x regeneration.
- the model for the NO x storage catalytic converter in the fresh state preferably describes a storage and / or regeneration behavior of the NO x storage catalytic converter.
- At least one adaptation value for the NO x storage capacity in the lean mode and at least one value for the O 2 storage capacity is determined.
- An up-to-date evaluation of the NO x storage capacity and the necessary regeneration duration is achieved by the adaptation values determined during the adaptation of the state of NO x storage capacity and O 2 storage capability of the NO x storage catalytic converter in the controlled mode for lean operation and NO x regeneration to be updated.
- the adaptation of the state of NO x storage capability and O 2 storage capability of the NO x storage catalytic converter is carried out only in those operating phases of the internal combustion engine in which an exhaust gas mass flow, a load, a temperature of the NO x storage catalytic converter and / or an exhaust gas temperature is within predetermined limits.
- NO x characteristic values are calculated in and / or behind the NO x storage catalytic converter, taking into account the previously determined state of the NO x storage capability.
- control of the NO x regeneration is performed only in those operating phases of the internal combustion engine, in which exhaust gas sensors, in particular a NO x sensor downstream of the NO x storage catalytic converter, are not ready for operation.
- a cumulative reductant throughput is adapted without separation of NO x and O 2 storage amounts and the controlled regeneration is terminated taking into account the determined adaptation value as a function of the cumulative reductant throughput.
- the reducing agent stream is preferably calculated from an exhaust gas mass flow and a combustion air ratio, wherein from the calculated reducing agent flow, a model and / or a map of the cumulative Reduktionsstoff besatzes during regeneration depending on the exhaust gas mass flow and a temperature of the NO x storage catalytic converter for a fresh NO x storage catalytic converter is created.
- an accumulated reductant flow rate adaptation value is determined by comparing the current cumulative reductant flow rate value with a cumulative reductant flow rate value stored in the model and / or map at that operating point.
- the adaptation of the cumulative reductant flow rate is only performed in those operating phases of the internal combustion engine in which an exhaust gas mass flow, a load, a temperature of the NO x storage catalytic converter and / or an exhaust gas temperature are within predetermined limits.
- the adaptation values determined during the adaptation of the cumulative reducing agent throughput are determined by additive and / or multiplicative parameters as a function of an exhaust gas mass flow, a load, a temperature of the NO x storage catalytic converter, an exhaust gas temperature and / or a NO x level corrected.
- FIG. A schematic representation of an internal combustion engine.
- the method according to the invention relates to an internal combustion engine that runs at least temporarily lean, as shown schematically in the single FIGURE.
- a pre-catalyst 18 and a NO x storage catalyst 12 is arranged in an exhaust tract of the internal combustion engine 10. Downstream of this NO x storage catalyst 12 is a measuring device 14, which is able to determine the air ratio of the exhaust gas.
- the measuring device 14 is, for example, a leaky or broadband lambda probe or an NO x sensor which emits one or both lambda signals U ⁇ , and a measuring device 14 which is able to determine the NOx concentration in the exhaust gas, for example a NO x sensor.
- a motor control unit 16 is provided which processes the lambda signal U ⁇ and the NO x signal.
- this engine control unit 16 there is further implemented a functionality capable of determining the state of the NO x storage catalyst 12 during a storage phase, ie, for example, a lean operation of the internal combustion engine.
- 2 storage capability of the NO x storage catalytic converter is adapted 12, the state of NO x storage capacity and O, NO x -Kennhong in and / or downstream of the NO x storing catalyst 12 in consideration of the determined NO x - Memory state calculated and thus determines the need for a NO x regeneration of the NO x storage catalytic converter 12 and this is initiated.
- the duration of the NO x regeneration is controlled as a function of the determined reducing agent mass determined taking into account the currently stored NO x and O 2 mass determined.
- the storage or regeneration behavior of the NO x storage catalytic converter 12 will be described for control by computational models. However, due to variations in model inputs, accurate modeling taking into account aging or sulfur poisoning is not possible.
- the influence of aging or sulfur poisoning of the NO x storing catalyst 12 to the storage or regeneration behavior of the NO x storing catalyst 12 is therefore according to the invention by appropriate methods based on measurement signals from sensors determined.
- the independent of the NO x storage ability state of O 2 storage capability has a great influence on the regeneration period.
- the states of NO x storage capacity and O 2 storage capacity are adapted on the basis of physical and / or phenomenological correlations in comparison to a model of only the fresh NO x storage catalytic converter 12.
- the adaptations take place in the exhaust gas aftertreatment system controlled by means of exhaust gas sensors. In each case, at least one adaptation value for the NO x storage capability in lean operation and the O 2 storage capability is determined with the aid of the exhaust gas sensor signals.
- the adaptation values are updated in the regulated operation of the exhaust aftertreatment, so that there is a current assessment of the NO x storage capacity and the necessary regeneration duration at all times.
- the adaptation processes preferably take place under conditions which enable a good dissolution of the aging state of the NO x storage catalytic converter 12. For this limits for the exhaust gas mass flow, the engine load, the catalyst and / or the exhaust gas temperature are specified.
- the adaptation values are corrected via additive and / or multiplicative parameters as a function of the exhaust gas mass flow, the engine load, the temperature of the NO x storage catalytic converter 12, the exhaust gas temperature and / or an NO x level of the NO x storage catalytic converter 12
- NO x characteristic values in and / or behind the NO x storage catalytic converter 12 are calculated taking into account the previously determined state of the NO x storage capability.
- multiplicative and / or additive correction parameters can be used for the calculated NO x characteristic values for the low-emission design.
- control of the regeneration period is dependent on the determined currently stored NO x - and O 2 mass or amount and the required reductant mass or quantity. Furthermore, multiplicative and / or additive correction parameters for the stored NO x and O 2 mass or quantity and / or the determined reducing agent mass or quantity are used.
- the cumulative reductant throughput during the regulated regeneration is adapted and the controlled regeneration is terminated, taking into account the determined adaptation value as a function of the cumulative reductant throughput. This is based on the finding that during a regeneration depending on the stored NO x mass, a different sized O 2 mass is implemented. Depending on the coating, a dependence of the regeneration duration on the exhaust gas mass flow, the engine load, the temperature of the NO x storage catalytic converter, the exhaust gas temperature and / or the combustion air ratio results in today's NO x storage.
- the reducing agent flow is calculated according to the invention from the exhaust gas mass flow and the combustion air ratio.
- a model and / or map of cumulative reductant throughput during regeneration versus exhaust gas mass flow and catalyst temperature for a fresh NO x storage catalyst is created.
- an adaptation value is determined by comparing the current cumulative reducing agent throughput stored in the model / characteristic map for a fresh catalyst.
- the adaptation process is preferably carried out under conditions which allow a good resolution of the regeneration period. For this purpose, limits for the exhaust gas mass flow, the engine load, the catalyst temperature and / or the exhaust gas temperature are predetermined.
- the adaptation values are corrected via additive and / or multiplicative parameters as a function of the stored NO x amount, O 2 amount, the exhaust gas mass flow, the engine load, the catalyst temperature and / or the exhaust gas temperature.
- the reducing agent throughput is cumulated during the regeneration and the regeneration ends when a threshold value is reached, taking into account the adaptation value.
- the NO x regeneration of the NO x storage catalytic converter is lengthened or shortened.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Exhaust Gas After Treatment (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims (18)
- Verfahren zum Betreiben einer magerlauffähigen Brennkraftmaschine mit einem in einem Abgastrakt der Brennkraftmaschine angeordneten NOx-Speicherkatalysator,
dadurch gekennzeichnet, daß ein Zustand einer NOx-Speicherfähigkeit und einer O2-Speicherfähigkeit des NOx-Speicherkatalysators adaptiert und mit dem adaptierten Zustand auf der Basis eines Modells für den NOx-Speicherkatalysator in frischem Zustand ermittelt wird, wann die NOx-Speicherfähigkeit des NOx-Speicherkatalysators erschöpft ist und in diesem Fall eine Regeneration des NOx-Speicherkatalysators angefordert wird, wobei eine Reduktionsmittelmenge zur Umsetzung der im NOx-Speicherkatalysator gespeicherten NOx- und O2-Menge berechnet und auf der Basis der berechneten Reduktionsmittelmenge die Regeneration des NOx-Speicherkatalysators gesteuert durchgeführt wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Adaption des Zustands von NOx-Speicherfähigkeit und O2-Speicherfähigkeit des NOx-Speicherkatalysators auf der Basis von Sensorsignalen von Abgassensoren im Abgastrakt der Brennkraftmaschine durchgeführt wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß bei der gesteuerten NOx-Regeneration ein Reduktionsmitteldurchsatz in Abhängigkeit von einem Abgasmassenstrom und einer Temperatur des NOx-Speicherkatalysators mit dem Modell und/oder einem Kennfeld für den NOx-Speicherkatalysator im frischen Zustand adaptiert wird und daraus ein Ende der gesteuerten NOx-Regeneration bestimmt wird.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Modell für den NOx-Speicherkatalysator in frischem Zustand ein Speicher- und/oder Regenerationsverhalten des NOx-Speicherkatalysators modelliert.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß bei der Adaption des Zustands von NOx-Speicherfähigkeit und O2-Speicherfähigkeit des NOx-Speicherkatalysators wenigstens ein Adaptionswert für die NOx-Speicherfähigkeit im Magerbetrieb und wenigstens ein Wert für die O2-Speicherfähigkeit ermittelt wird.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die bei der Adaption des Zustands von NOx-Speicherfähigkeit und O2-Speicherfähigkeit des NOx-Speicherkatalysators ermittelten Adaptionswerte im geregelten Betrieb für den Magerbetrieb und die NOx-Regeneration aktualisiert werden.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Adaption des Zustands von NOx-Speicherfähigkeit und O2-Speicherfähigkeit des NOx-Speicherkatalysators nur in solchen Betriebsphasen der Brennkraftmaschine durchgeführt wird, in denen ein Abgasmassenstrom, eine Last, eine Temperatur des NOx-Speicherkatalysator und/oder eine Abgastemperatur innerhalb vorbestimmter Grenzwerte liegt.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die bei der Adaption des Zustands von NOx-Speicherfähigkeit und O2-Speicherfähigkeit des NOx-Speicherkatalysators ermittelten Adaptionswerte über additive und/oder multiplikative Parameter in Abhängigkeit von einem Abgasmassenstrom, einer Last, einer Temperatur des NOx-Speicherkatalysators, einer Abgastemperatur und/oder einem NOx-Füllstand korrigiert werden.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß NOx-Kennwerte im und/oder hinter dem NOx-Speicherkatalysator unter Berücksichtigung des zuvor ermittelten Zustands der NOx-Speicherfähigkeit berechnet werden.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Steuerung der NOx-Regeneration nur in solchen Betriebsphasen der Brennkraftmaschine durchgeführt wird, in denen Abgassensoren, insbesondere ein NOx-Sensor stromab des NOx-Speicherkatalysators, nicht betriebsbereit sind.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß von der Adaption des Zustands von NOx-Speicherfähigkeit und O2-Speicherfähigkeit des NOx-Speicherkatalysators sowie der Steuerung der NOx-Regeneration auf einen geregelten Betrieb für den NOx-Speicherkatalysator nur am Beginn einer Speicherund/oder einer Regenerationsphase umgeschaltet wird.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß während einer geregelten NOx-Regeneration aus einem Reduktionsmittelstrom ein kumulierter Reduktionsmitteldurchsatz ohne Trennung von NOx- und O2-Speichermengen adaptiert und die gesteuerte Regeneration unter Berücksichtigung des ermittelten Adaptionswertes in Abhängigkeit vom kumulierten Reduktionsmitteldurchsatz beendet wird.
- Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß der Reduktionsmittelstrom aus einem Abgasmassenstrom und einem Verbrennungsluftverhältnis berechnet wird.
- Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß aus dem berechneten Reduktionsmittelstrom ein Modell und/oder ein Kennfeld des kumulierten Reduktionsmitteldurchsatzes während der Regeneration in Abhängigkeit vom Abgasmassenstrom und einer Temperatur des NOx-Speicherkatalysators für einen frischen NOx-Speicherkatalysator erstellt wird.
- Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß in einem geregelten Betrieb der Abgasnachbehandlung ein Adaptionswert für den kumulierten Reduktionsmitteldurchsatz durch Vergleich des aktuellen Wertes für den kumulierten Reduktionsmitteldurchsatz mit einem in dem Modell und/oder Kennfeld abgelegten Wert für den kumulierten Reduktionsmitteldurchsatz an diesem Betriebspunkt bestimmt wird.
- Verfahren nach wenigstens einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, daß die Adaption des kumulierten Reduktionsmitteldurchsatzes nur in solchen Betriebsphasen der Brennkraftmaschine durchgeführt wird, in denen ein Abgasmassenstrom, eine Last, eine Temperatur des NOx-Speicherkatalysators und/oder eine Abgastemperatur innerhalb vorbestimmter Grenzwerte liegt.
- Verfahren nach wenigstens einem der Ansprüche 12 bis 16, dadurch gekennzeichnet, daß die bei der Adaption des kumulierten Reduktionsmitteldurchsatzes ermittelten Adaptionswerte über additive und/oder multiplikative Parameter in Abhängigkeit von einem Abgasmassenstrom, einer Last, einer Temperatur des NOx-Speicherkatalysator, einer Abgastemperatur und/oder einem NOx-Füllstand korrigiert werden.
- Verfahren nach wenigstens einem der Ansprüche 12 bis 17, dadurch gekennzeichnet, daß mit einem vorbestimmten Sicherheitsfaktor die gesteuerte Regeneration zusätzlich verfangert oder verkürzt wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10337873 | 2003-08-18 | ||
| DE10337873A DE10337873A1 (de) | 2003-08-18 | 2003-08-18 | Verfahren zum Betreiben einer Brennkraftmaschine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1508683A2 true EP1508683A2 (de) | 2005-02-23 |
| EP1508683A3 EP1508683A3 (de) | 2007-01-03 |
| EP1508683B1 EP1508683B1 (de) | 2010-12-08 |
Family
ID=34042186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04103569A Expired - Lifetime EP1508683B1 (de) | 2003-08-18 | 2004-07-26 | Verfahren zum Betreiben einer Brennkraftmaschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1508683B1 (de) |
| AT (1) | ATE491087T1 (de) |
| DE (2) | DE10337873A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090399A (zh) * | 2021-05-18 | 2021-07-09 | 常州易控汽车电子股份有限公司 | 一种缩短NOx传感器露点释放时间的控制方法 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19951544C1 (de) | 1999-10-26 | 2000-12-07 | Siemens Ag | Verfahren zur Steuerung des Betriebs eines NOx-Speicherkatalysators |
| DE10023079A1 (de) | 2000-05-11 | 2002-01-03 | Volkswagen Ag | Vorrichtung und Verfahren zur Steuerung einer NOx-Regeneration eines im Abgasstrang einer Verbrennungskraftmaschine angeordneten NOx-Speicherkatalysators |
| EP1184555A2 (de) | 2000-08-30 | 2002-03-06 | Nissan Motor Co., Ltd. | Abgasreinigungsvorrichtung für eine Brennkraftmaschine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0997617A1 (de) * | 1998-10-28 | 2000-05-03 | Ford Global Technologies, Inc., A subsidiary of Ford Motor Company | Verfahren zur Regeneration einer Stickoxidfalle im Abgassystem eines Verbrennungsmotors sowie Vorrichtung zur Durchführung des Verfahrens |
| JP3570297B2 (ja) * | 1999-06-10 | 2004-09-29 | 株式会社日立製作所 | エンジン排気浄化装置 |
| DE19929293A1 (de) * | 1999-06-25 | 2000-12-28 | Volkswagen Ag | Verfahren zur Steuerung einer Regeneration eines NOx-Speicherkatalysators |
| US6553757B1 (en) * | 2001-11-19 | 2003-04-29 | Ford Global Technologies, Llc | NOx purge air/fuel ratio selection |
-
2003
- 2003-08-18 DE DE10337873A patent/DE10337873A1/de not_active Withdrawn
-
2004
- 2004-07-26 DE DE502004011966T patent/DE502004011966D1/de not_active Expired - Lifetime
- 2004-07-26 EP EP04103569A patent/EP1508683B1/de not_active Expired - Lifetime
- 2004-07-26 AT AT04103569T patent/ATE491087T1/de active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19951544C1 (de) | 1999-10-26 | 2000-12-07 | Siemens Ag | Verfahren zur Steuerung des Betriebs eines NOx-Speicherkatalysators |
| DE10023079A1 (de) | 2000-05-11 | 2002-01-03 | Volkswagen Ag | Vorrichtung und Verfahren zur Steuerung einer NOx-Regeneration eines im Abgasstrang einer Verbrennungskraftmaschine angeordneten NOx-Speicherkatalysators |
| EP1184555A2 (de) | 2000-08-30 | 2002-03-06 | Nissan Motor Co., Ltd. | Abgasreinigungsvorrichtung für eine Brennkraftmaschine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090399A (zh) * | 2021-05-18 | 2021-07-09 | 常州易控汽车电子股份有限公司 | 一种缩短NOx传感器露点释放时间的控制方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1508683A3 (de) | 2007-01-03 |
| EP1508683B1 (de) | 2010-12-08 |
| DE10337873A1 (de) | 2005-04-21 |
| ATE491087T1 (de) | 2010-12-15 |
| DE502004011966D1 (de) | 2011-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE19548071B4 (de) | Vorrichtung zur Selbstdiagnose einer Luft/Kraftstoff-Verhältnis-Steueranlage für eine Brennkraftmaschine | |
| EP2791493B1 (de) | Verfahren und vorrichtung zur dynamiküberwachung von gas-sensoren | |
| DE102008038677B4 (de) | Verfahren und Vorrichtung zum Diagnostizieren eines Abgaskatalysators | |
| EP3196433B1 (de) | Verfahren zur überwachung einer abgasnachbehandlungsanlage, insbesondere eines nox-speicher-katalysators sowie steuerungseinrichtung für eine abgasnachbehandlungsanlage und fahrzeug | |
| EP1118756B1 (de) | Verfahren und Vorrichtung zur Steuerung der Regeneration eines NOx-Speicherkatalysators | |
| DE10008564A1 (de) | Verfahren und Vorrichtung zur Steuerung der Regeneration eines NOx-Speicherkatalysators | |
| DE102008006631A1 (de) | Verfahren zur Diagnose eines Sauerstoffsensors sowie ein Verfahren zur Korrektur einer Diagnose eines Katalysators | |
| DE10003219A1 (de) | Verfahren und Vorrichtung zur Regelung eines in einem Abgaskanal einer Verbrennungskraftmaschine angeordneten NOx-Speicherkatalysators | |
| DE102016200155A1 (de) | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Verbrennungsmotors sowie Steuerungseinrichtung für eine Abgasnachbehandlungsanlage | |
| EP1255917B1 (de) | VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG EINER NOx-KONZENTRATION EINES ABGASSTROMES EINER VERBRENNUNGSKRAFTMASCHINE | |
| DE102016200158A1 (de) | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Verbrennungsmotors sowie Steuerungseinrichtung für eine Abgasnachbehandlungsanlage | |
| DE102015200762A1 (de) | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Verbrennungsmotors sowie Steuerungseinrichtung für eine Abgasnachbehandlungsanlage | |
| DE102008004218B4 (de) | Verfahren zur Bestimmung der dynamischen Rußemission | |
| DE102015200751A1 (de) | Verfahren zur Überwachung einer Abgasnachbehandlungsanlage eines Verbrennungsmotors sowie Steuerungseinrichtung für eine Abgasnachbehandlungsanlage | |
| EP1926898B1 (de) | Lambdaregelung mit sauerstoffmengenbilanzierung | |
| EP1508683A2 (de) | Verfahren zum Betreiben einer Brennkraftmaschine | |
| DE102012222868A1 (de) | Diagnose der Funktionsfähigkeit eines Sekundärluftsystems einer Brennkraftmaschine | |
| DE102016210143A1 (de) | Verfahren zur Ermittlung eines Alterungszustands eines NOx-Speicherkatalysators einer Abgasnachbehandlungsanlage eines für einen Magerbetrieb ausgelegten Verbrennungsmotors sowie Steuerungseinrichtung | |
| DE102022206891A1 (de) | Verfahren, Recheneinheit und Computerprogramm zum Ermitteln von Füllständen eines ersten Abgaskatalysators und eines zweiten Abgaskatalysators | |
| DE10333337B4 (de) | Verfahren und Vorrichtung zur Diagnose eines Katalysatorsystems | |
| EP1960645B1 (de) | Verfahren zur diagnose eines in einem abgasbereich einer brennkraftmaschine angeordneten katalysators und vorrichtung zur durchführung des verfahrens | |
| EP1248900B1 (de) | VERFAHREN UND VORRICHTUNG ZUR DIAGNOSE EINES NOx-SPEICHERKATALYSATORS | |
| EP1160425B1 (de) | Verfahren und Vorrichtung zur Durchführung einer Regeneration eines NOx-Speicherkatalysators | |
| DE102012200032A1 (de) | Verfahren und Vorrichtung zur Dynamik-Diagnose von Sensoren | |
| DE10223629B4 (de) | Verfahren und Vorrichtung zur Ermittlung von Kenngrößen eines Abgasreinigungssystems |
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 BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK |
|
| 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 BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
| AX | Request for extension of the european patent |
Extension state: AL HR LT LV MK |
|
| 17P | Request for examination filed |
Effective date: 20070703 |
|
| AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
| 17Q | First examination report despatched |
Effective date: 20070919 |
|
| 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 BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR |
|
| 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 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
| REF | Corresponds to: |
Ref document number: 502004011966 Country of ref document: DE Date of ref document: 20110120 Kind code of ref document: P |
|
| REG | Reference to a national code |
Ref country code: NL Ref legal event code: VDEP Effective date: 20101208 |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101208 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: 20101208 Ref country code: SI 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: 20101208 Ref country code: BG 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: 20110308 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: 20101208 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: 20101208 |
|
| REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
| 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: 20110309 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: 20110408 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: 20110319 Ref country code: EE 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: 20101208 Ref country code: CZ 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: 20101208 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: 20101208 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SK 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: 20101208 Ref country code: RO 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: 20101208 Ref country code: PL 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: 20101208 |
|
| 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 |
|
| 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: 20101208 |
|
| 26N | No opposition filed |
Effective date: 20110909 |
|
| 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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20101208 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502004011966 Country of ref document: DE Effective date: 20110909 |
|
| BERE | Be: lapsed |
Owner name: VOLKSWAGEN AG Effective date: 20110731 |
|
| 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: 20110731 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20110726 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20120330 |
|
| 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: 20110801 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110731 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110731 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110731 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110726 |
|
| REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 491087 Country of ref document: AT Kind code of ref document: T Effective date: 20110726 |
|
| 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: 20110726 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110726 |
|
| 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: 20101208 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU 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: 20101208 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20160731 Year of fee payment: 13 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502004011966 Country of ref document: DE |
|
| 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: 20180201 |