EP1138898A2 - Verfahren und Vorrichtung zur Abgasreinigung - Google Patents
Verfahren und Vorrichtung zur Abgasreinigung Download PDFInfo
- Publication number
- EP1138898A2 EP1138898A2 EP01250100A EP01250100A EP1138898A2 EP 1138898 A2 EP1138898 A2 EP 1138898A2 EP 01250100 A EP01250100 A EP 01250100A EP 01250100 A EP01250100 A EP 01250100A EP 1138898 A2 EP1138898 A2 EP 1138898A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- downstream
- storage
- catalytic converters
- storage catalytic
- catalytic converter
- 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
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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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
- F02D41/1441—Plural sensors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- 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
Definitions
- the invention relates to a method and a device for exhaust gas purification in a Internal combustion engine with those mentioned in the preamble of the independent claims Characteristics.
- NO x storage catalysts are usually operated in a storage cycle which comprises at least one usually long absorption mode and a relatively short regeneration mode.
- NO x storage catalytic converters are mainly used in direct injection systems, which make significant fuel savings possible in so-called stratified charge mode. This enables the safe combustion of extremely lean mixtures in the idle and part-load range with fuel savings of> 40% at idle and around 15% over the entire Eurotest cycle MVEG.
- the fuel is injected directly into the combustion chamber via electromagnetic nozzle valves.
- the engine is operated with the throttle valve almost completely open, thus additionally avoiding gas exchange losses. Only from a certain demanded power, the engine must be operated again in conventional operation, in which the throttle valve position determines the amount of the air / fuel mixture drawn.
- stratified charge operation the NO x storage catalytic converter is operated in the absorption mode. In contrast, in homogeneous operation of the engine, a stoichiometric or a rich air / fuel mixture is supplied for the regeneration of the NO x storage catalytic converter.
- the operating state for example the NO x loading state or the end of the NO x regeneration of the individual NO x storage catalysts, is detected by means of sensor means arranged in the mixed exhaust gas downstream of the NO x storage catalysts, for example a downstream NO x sensor or a lambda Probe, not possible.
- the arrangement of sensor means downstream of each NO x storage catalytic converter is therefore more favorable.
- the object of the invention is therefore to provide a method and a device for exhaust gas purification in an internal combustion engine with at least two regenerable NO x storage catalytic converters arranged in parallel downstream of a branch of an exhaust line, which enable complete regeneration of all NO x storage catalytic converters and at the same time a high degree afford exhaust gas cleaning.
- the invention is based on the idea of a straight conducted NOx -Regenerationsdorfddling depending on theFromesten time to stop, at which a characteristic of the termination of NO x -Regenerationsdorfdging state parameter value on one of the NO x storage is measured.
- This procedure makes it possible to regenerate all NO x storage catalysts until an operating state characteristic of the termination of a regeneration measure also occurs on the last of the NO x storage catalysts, so that the NO x storage capacity of all NO x storage catalysts can be used without restriction.
- the exhaust gas to at least one downstream of the NO x storage catalysts in the exhaust line arranged catalyst is supplied, reducing agents breakthroughs are oxidized at the first in time the regenerated NO x storage catalytic converters and thus rendered harmless.
- a 3-way catalyst with Rh and Pt and / or Pd as essential noble metal components is preferably suitable for this purpose, but the use of a pure oxidation catalyst with Pt and / or Pd as essential noble metal components is also conceivable.
- FIG. 1 shows an internal combustion engine 1 of a motor vehicle, which is only shown schematically and can preferably be operated in stratified charge mode, with a downstream exhaust line 2 and with an engine control unit 5 for evaluating and influencing operating parameters of the internal combustion engine 1.
- the exhaust line 2 has two regenerable NO x storage catalytic converters 3 and 4 , which are arranged downstream of a branch 7 in the exhaust line 2.
- a pre-catalytic converter 15 is arranged in the exhaust line 2 upstream of the branch 7.
- the exhaust line 2 also has a junction 8 downstream of the NO x storage catalytic converters 3 and 4 and a catalytic converter 9 connected downstream of the junction, preferably a conventional 3-way catalytic converter.
- a junction 8 downstream of the NO x storage catalytic converters 3 and 4 and a catalytic converter 9 connected downstream of the junction, preferably a conventional 3-way catalytic converter.
- lambda probes 10, 11, 12 are arranged upstream or downstream of the NO x storage catalytic converters 3 and 4.
- the sensors 11, 12 downstream of the NO x storage catalytic converters 3 and 4 can also be designed as NO x sensors and in this case deliver a NO x signal that selectively represents the NO x concentration in the exhaust gas, as well as a corresponding signal for the oxygen concentration .
- the engine control unit 5 detects in a manner known per se via a temperature sensor 14 and other sensors, not shown, operating parameters of the internal combustion engine 1 such as Exhaust gas temperature, load, speed, raw emissions history or the like and these About actuators, not shown, such as electromagnetic nozzle valves or a throttle valve in the air supply of the internal combustion engine 1 if necessary influence.
- operating parameters of the internal combustion engine 1 such as Exhaust gas temperature, load, speed, raw emissions history or the like and these About actuators, not shown, such as electromagnetic nozzle valves or a throttle valve in the air supply of the internal combustion engine 1 if necessary influence.
- actuators not shown, such as electromagnetic nozzle valves or a throttle valve in the air supply of the internal combustion engine 1 if necessary influence.
- a cable system 16 intended for communication between the engine control unit 5 and the Internal combustion engine 1 or the actuators.
- the engine control unit 5 comprises, in particular, a lambda control system which signals the Lambda probe 10 and the sensors 11 and 12 evaluated and depending on Operating state of the catalysts 3, 4 and 15 a change in the operating parameters of the Internal combustion engine 1 for exhaust gas control.
- the loading with NO x and the NO x reduction power can be determined in a manner known per se for each of the NO x storage catalysts 3 and 4.
- a regeneration measure can be initiated, for example, as a function of the NO x loading of the NO x storage catalytic converters 3 and 4, by switching from a lean to a rich air / fuel mixture. This can be triggered, for example, by the more heavily loaded catalyst or the catalyst with faster occurring and / or higher NO x breakthroughs.
- the lambda signal is evaluated in a manner known per se in order to initiate a regeneration measure.
- the NO x storage catalytic converters 3 and 4 are regenerated if the operating state of the internal combustion engine requires it anyway, such as in the warm-up phase during acceleration and full load if a rich air / fuel mixture is used.
- a NO x regeneration measure that has just been carried out is terminated as a function of the latest point in time at which a state parameter value characteristic of the termination of a NO x regeneration measure is measured on one of the NO x storage catalytic converters.
- the regeneration measure when the regeneration measure is ended, it is taken into account that in general each of the NO x storage catalytic converters 3 and 4 reaches an operating state at a different point in time, which requires the regeneration measure to be terminated.
- Such operating conditions are, for example, a reductant breakthrough on one of the NO x storage catalysts 3 and 4, a minimum in the NO x concentration after switching to a rich air / fuel mixture or a brief NO x desorption peak. Since the termination of the regeneration measure necessarily affects all NO x storage catalytic converters 3 and 4 by design, the termination of the regeneration measure according to the invention ensures that each of the NO x storage catalytic converters 3 and 4 is completely regenerated.
- the engine control unit 5 has a control device 6, with the aid of which the signals from the sensors 11, 12 are evaluated.
- the control device 6, which may also be a separate component, determines the latest point in time at which a state parameter value characteristic of the completion of the regeneration measure occurs on one of the NO x storage catalytic converters 3 and 4.
- a control signal is then fed from the control device 6 to the engine control 5, and the NO x regeneration measure is ended by the engine control 5 by activating corresponding actuators on the internal combustion engine 1.
- the NO x control device 6 can be implemented, for example, by a microcontroller with a CPU, a program memory, a data memory and input and output interfaces. In order to determine the latest point in time for the end of the regeneration measure, the sorting algorithm known per se is used by the control device 6.
- the catalytic converter 9 is arranged in the exhaust line 2 downstream of the junction 8 for effective exhaust gas purification.
- a lower reduction agent requirement generally occurs during a regeneration measure because of a lower NO x storage capacity.
- the oxygen storage capacity of the downstream catalytic converter 9 must therefore be dimensioned sufficiently so that the correspondingly higher amounts of reducing agents can be catalytically converted even in the case of partially damaged NO x storage catalytic converters 3, 4. This avoids additional pollution of the environment with hydrocarbons and carbon monoxide.
- the catalytic converter 9 is preferably designed in such a way that approximately 30% of the total reducing agent supplied to the NO x storage catalytic converters 3 and 4 can be broken down. This corresponds to a design of the catalytic converter 9, in which about 0.1 gram of O 2 storage capacity is stored per gram of NO 2 storable NO 2 before initiation of the NO x regeneration mode for the NO x storage catalytic converters 3, 4.
- a sensor 13 preferably a Lambda probe, downstream of the catalytic converter 9 for monitoring the functionality intended.
- the signal from the sensor 13 is the control device 6 or the Engine control unit 5 supplied.
- FIG. 2 shows an alternative embodiment of the invention, in which there is no merging of the exhaust line 2 downstream of the NO x storage catalytic converters 3, 4. This is necessary, for example, if the downstream catalyst also has to be divided for packing reasons. Accordingly, an exhaust gas branch 2 with a downstream catalytic converter 9 is connected to the NO x storage catalytic converter 3 and an exhaust gas branch 2 a with a further catalytic converter 9 a is connected to the NO x storage catalytic converter 4.
- the design of the catalytic converters 9, 9a which are preferably implemented as 3-way catalytic converters, is again to be dimensioned in such a way that the reductant which has been broken through can be converted safely.
- the catalysts 9, 9a can be monitored by downstream sensors 13, 13a. Lambda probes are preferably provided for this. The signal from the sensors 13, 13a is fed to the control device 6 or the engine control 5 and causes an NO x regeneration measure to be terminated if a reduction agent breakdown of a predetermined level is detected.
- the termination of a NO x regeneration measure according to the invention enables safe and efficient exhaust gas purification in an internal combustion engine with at least two regenerable NO x storage catalytic converters arranged in parallel after a branch in the exhaust line.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
- Figur 1
- einen Verbrennungsmotor mit einer erfindungsgemäßen Vorrichtung zur Abgasreinigung mit zwei NOx-Speicherkatalysatoren und einem stromabwärts der NOx-Speicherkatalysatoren im Abgasstrang angeordneten Katalysator und
- Figur 2
- einen Verbrennungsmotor mit einer erfindungsgemäßen Vorrichtung zur Abgasreinigung mit zwei NOx-Speicherkatalysatoren und zwei stromabwärts der NOx-Speicherkatalysatoren im Abgasstrang angeordneten Katalysatoren.
Claims (14)
- Verfahren zur Abgasreinigung bei einem Verbrennungsmotor mit mindestens zwei parallel stromabwärts einer Abzweigung eines Abgasstranges angeordneten durch ein im Abgas enthaltenes Reduktionsmittel regenerierbaren NOx-Speicherkatalysatoren, denen zur individuellen Messung von Zustandsparametern jeweils stromabwärts ein Sensor, beispielsweise ein NOx-Sensor und/oder eine Lambdasonde, zugeordnet ist und wobei das Abgas zumindest einem stromabwärts der NOx-Speicherkatalysatoren im Abgasstrang angeordneten Oxydationskatalysator, vorzugsweise einem 3-Wege-Katalysator zugeführt wird und in Abhängigkeit von den Zustandsparameter-Werten der NOx-Speicherkatalysatoren NOx-Regenerationsmaßnahmen durchgeführt werden, dadurch gekennzeichnet, dass eine gerade durchgeführte NOx-Regenerationsmaßnahme in Abhängigkeit von einem der NOx-Speicherkatalysatoren beendet wird, für den zu einem späteren, insbesondere letzten Zeitpunkt ein für die Beendigung der NOx-Regenerationsmaßnahme charakteristischer Zustandsparameter-Wert gemessen wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als charakteristischer Zustandsparameter-Wert für die Beendigung einer NOx-Regenerationsmaßnahme ein vorgegebener Lambdawert des Abgases stromabwärts eines NOx-Speicherkatalysators gewählt wird.
- Verfahren nach mindestens einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass die Sauerstoffspeicherkapazität des stromabwärts der NOx-Speicherkatalysatoren im Abgasstrang angeordneten Oxydationskatalysators ausreichend hoch bemessen ist, um die bei einem teilgeschädigten NOx-Speicherkatalysator durchbrechende Menge an Reduktionsmittel zu mindestens 50 %, insbesondere mindestens 90 %, abzubauen.
- Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sauerstoffspeicherkapazität des stromabwärts der NOx-Speicherkatalysatoren im Abgasstrang angeordneten Oxydationskatalysators ausreichend hoch bemessen ist, um mindestens 20 %, vorzugsweise mindestens 30 % des die NOx-Speicherkatalysatoren während einer NOx-Regeneration anströmenden Reduktionsmittels abzubauen.
- Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in dem/den stromabwärts der NOx-Speicherkatalysatoren im Abgasstrang angeordneten Oxydationskatalysator(en) pro Gramm in den NOx-Speicherkatalysatoren speicherbares NOx mindestens 0,07 g, insbesondere 0,1 g Sauerstoff vorgehalten wird.
- Verfahren nach mindestens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Betriebszustand des stromabwärts der NOx-Speicherkatalysatoren im Abgasstrang angeordneten Oxydationskatalysators mittels eines stromabwärts angeordneten Sensors, beispielsweise einer Lambda-Sonde bestimmt wird.
- Verfahren nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der stromabwärts der NOx-Speicherkatalysatoren im Abgasstrang angeordneten Oxydationskatalysator auf das Auftreten eines Reduktionsmitteldurchbruchs hin überwacht wird und bei Auftreten eines Reduktionsmitteldurchbruchs vorgegebener Höhe eine gerade durchgeführte NOx-Regenerationsmaßnahme beendet wird.
- Verfahren nach mindestens einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die NOx-Regenerationsmaßnahme in Abhängigkeit von der NOx-Beladung der NOx-Speicherkatalysatoren eingeleitet wird.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass die NOx-Regenerationsmaßnahme in Abhängigkeit von dem ersten Zeitpunkt eingeleitet wird, zu dem an einem der NOx-Speicherkatalysatoren ein NOx-Durchbruch vorgegebener Höhe auftritt.
- Verfahren nach zumindest einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass stromaufwärts der NOx-Speicherkatalysatoren das Abgas zumindest einem Vorkatalysator zugeführt wird.
- Vorrichtung zur Abgasreinigung für einen Verbrennungsmotor mit mindestens zwei parallel stromabwärts einer Abzweigung (7) im Abgasstrang angeordneten durch im Abgas enthaltenes Reduktionsmittel regenerierbaren NOx-Speicherkatalysatoren und zumindest einem stromabwärts der NOx-Speicherkatalysatoren angeordneten Oxydationskatalysator, vorzugsweise einem 3-Wege-Katalysator, wobei stromabwärts der NOx-Speicherkatalysatoren Sensoren zur individuellen Erfassung von Zustandsparameter-Werten der NOx-Speicherkatalysatoren vorgesehen sind, die einem Motorsteuergerät zur Auswertung und Beeinflussung von Betriebsparametern des Verbrennungsmotor zuführbar sind, dadurch gekennzeichnet, dass das Motorsteuergerät eine Kontrolleinrichtung aufweist, um in Abhängigkeit von einem späteren, insbesondere dem letzten Zeitpunkt, an dem ein für eine Beendigung einer NOx-Regenerationsmaßnahme charakteristischer Zustandsparameter-Wert an einem der NOx-Speicherkatalysatoren gemessen wird, eine gerade durchgeführte NOx-Regenerationsmaßnahme zu beenden.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass die Abgasstrangszweige stromabwärts der NOx-Speicherkatalysatoren und stromaufwärts des nachgeschalteten Oxydationskatalysators an einer Zusammenführungsstelle wieder zusammengeführt werden.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass die Abgasstrangzweige stromabwärts der NOx-Speicherkatalysatoren geteilt bleiben und in jedem Abgasstrangzweig jeweils mindestens ein nachgeschalteter Oxydationskatalysator, vorzugsweise 3-Wege-Katalysator, angeordnet ist.
- Vorrichtung nach zumindest einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass stromabwärts jedes dem NOx-Speicherkatalysator nachgeschalteten Oxydationskatalysators Sensormittel zur Überwachung des Betriebszustandes dieses betreffenden Oxydationskatalysators angeordnet sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10015330 | 2000-03-28 | ||
DE10015330A DE10015330A1 (de) | 2000-03-28 | 2000-03-28 | Verfahren und Vorrichtung zur Abgasreinigung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1138898A2 true EP1138898A2 (de) | 2001-10-04 |
EP1138898A3 EP1138898A3 (de) | 2003-11-05 |
EP1138898B1 EP1138898B1 (de) | 2005-06-15 |
Family
ID=7636660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01250100A Expired - Lifetime EP1138898B1 (de) | 2000-03-28 | 2001-03-21 | Verfahren und Vorrichtung zur Abgasreinigung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1138898B1 (de) |
AT (1) | ATE298041T1 (de) |
DE (2) | DE10015330A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1445441A1 (de) * | 2003-02-07 | 2004-08-11 | Isuzu Motors Limited | Abgasreinigungssystem für eine Brennkraftmaschine |
EP1529944A1 (de) * | 2003-11-06 | 2005-05-11 | Toyota Jidosha Kabushiki Kaisha | Abgassteuerungsvorrichtung und Verfahren für eine Brennkraftmaschine |
FR2868129A1 (fr) * | 2004-03-27 | 2005-09-30 | Bosch Gmbh Robert | Procede de gestion d'un moteur a combustion interne |
US20110088377A1 (en) * | 2009-02-06 | 2011-04-21 | Toyota Jidosha Kabushiki Kaisha | Exhaust purification device of internal combustion engine |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10331331B4 (de) * | 2003-07-10 | 2012-03-01 | Volkswagen Ag | Verfahren zum Betreiben einer Brennkraftmaschine |
DE10331333B4 (de) * | 2003-07-10 | 2016-01-14 | Volkswagen Ag | Verfahren zum Betreiben einer Brennkraftmaschine |
DE10331334B4 (de) * | 2003-07-10 | 2012-12-20 | Volkswagen Ag | Verfahren zum Betreiben einer Brennkraftmaschine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0701858A1 (de) * | 1994-09-13 | 1996-03-20 | Toyota Jidosha Kabushiki Kaisha | Abgasreinigungseinrichtung für eine Brennkraftmaschine |
EP0903478A2 (de) * | 1997-09-19 | 1999-03-24 | Toyota Jidosha Kabushiki Kaisha | Abgasreinigungsvorrichtung für eine Brennkraftmaschine |
DE19816276A1 (de) * | 1998-04-11 | 1999-10-14 | Audi Ag | Verfahren zum Betreiben einer Brennkraftmaschine |
JP2000018021A (ja) * | 1998-07-03 | 2000-01-18 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
-
2000
- 2000-03-28 DE DE10015330A patent/DE10015330A1/de not_active Withdrawn
-
2001
- 2001-03-21 DE DE50106491T patent/DE50106491D1/de not_active Expired - Lifetime
- 2001-03-21 AT AT01250100T patent/ATE298041T1/de not_active IP Right Cessation
- 2001-03-21 EP EP01250100A patent/EP1138898B1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0701858A1 (de) * | 1994-09-13 | 1996-03-20 | Toyota Jidosha Kabushiki Kaisha | Abgasreinigungseinrichtung für eine Brennkraftmaschine |
EP0903478A2 (de) * | 1997-09-19 | 1999-03-24 | Toyota Jidosha Kabushiki Kaisha | Abgasreinigungsvorrichtung für eine Brennkraftmaschine |
DE19816276A1 (de) * | 1998-04-11 | 1999-10-14 | Audi Ag | Verfahren zum Betreiben einer Brennkraftmaschine |
JP2000018021A (ja) * | 1998-07-03 | 2000-01-18 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 04, 31. August 2000 (2000-08-31) & JP 2000 018021 A (TOYOTA MOTOR CORP), 18. Januar 2000 (2000-01-18) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1445441A1 (de) * | 2003-02-07 | 2004-08-11 | Isuzu Motors Limited | Abgasreinigungssystem für eine Brennkraftmaschine |
EP1529944A1 (de) * | 2003-11-06 | 2005-05-11 | Toyota Jidosha Kabushiki Kaisha | Abgassteuerungsvorrichtung und Verfahren für eine Brennkraftmaschine |
FR2868129A1 (fr) * | 2004-03-27 | 2005-09-30 | Bosch Gmbh Robert | Procede de gestion d'un moteur a combustion interne |
US20110088377A1 (en) * | 2009-02-06 | 2011-04-21 | Toyota Jidosha Kabushiki Kaisha | Exhaust purification device of internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
EP1138898B1 (de) | 2005-06-15 |
EP1138898A3 (de) | 2003-11-05 |
ATE298041T1 (de) | 2005-07-15 |
DE50106491D1 (de) | 2005-07-21 |
DE10015330A1 (de) | 2002-02-21 |
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