EP1079079B1 - Commande de moteur pour un moteur diesel - Google Patents

Commande de moteur pour un moteur diesel Download PDF

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Publication number
EP1079079B1
EP1079079B1 EP00113356A EP00113356A EP1079079B1 EP 1079079 B1 EP1079079 B1 EP 1079079B1 EP 00113356 A EP00113356 A EP 00113356A EP 00113356 A EP00113356 A EP 00113356A EP 1079079 B1 EP1079079 B1 EP 1079079B1
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EP
European Patent Office
Prior art keywords
mode
diesel engine
storage
operated
salt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00113356A
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German (de)
English (en)
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EP1079079A2 (fr
EP1079079A3 (fr
Inventor
Holger Adler
Frank Dr. Duvinage
Stefan Dr. Kurze
Michael Lenz
Thomas Liebscher
Ulrich Merten
Norbert Ruzicka
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Daimler AG
Original Assignee
DaimlerChrysler AG
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Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP1079079A2 publication Critical patent/EP1079079A2/fr
Publication of EP1079079A3 publication Critical patent/EP1079079A3/fr
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Publication of EP1079079B1 publication Critical patent/EP1079079B1/fr
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Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • 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
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
    • 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
    • F02D41/021—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
    • F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
    • F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
    • 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
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/32—Air-fuel ratio control in a diesel engine

Definitions

  • the invention relates to a motor control for a Diesel engine, in whose exhaust system a storage catalytic converter is arranged with the characteristics of the preamble of Claim 1.
  • an operating method for a diesel engine in which the diesel engine, in whose exhaust gas line a NO x storage catalytic converter is arranged, in a superstoichiometric operation (lean operation) and in a substoichiometric operation (rich operation) can be operated.
  • lean operation of the diesel engine the NO x salts contained in its exhaust gases are stored in the NO x storage catalyst by adsorption.
  • a large part of the nitrogen oxides emitted by the diesel engine can be removed from the exhaust gas.
  • the diesel engine is switched over to the rich operation for a certain time, in which the unburned diesel fuel acts as a reducing agent for the adsorbed in the NO x storage NO x salts, which reduces the nitrogen oxides for desorption from the NO x storage catalytic converter , During this desorption operation or regeneration operation, the stored nitrogen oxides are removed from the NO x storage catalyst.
  • SO x sulfur oxides
  • SO x salts thermodynamically more stable and therefore have a higher chemical binding energy than the NO x salts (nitrates), with the result that a regeneration process described above, although sufficient to desorb the adsorbed nitrogen oxides, but not sufficient to desorb the adsorbed sulfur oxides.
  • an engine control of the type mentioned which allows operation of a diesel engine in a storage mode in which NO x salts and SO x salts are absorbed in a storage catalytic converter from the exhaust gas of the diesel engine an exhaust line of the diesel engine is arranged.
  • the known engine control also allows operation of the diesel engine in a regeneration mode in which a reducing exhaust gas is generated, whereby at least the NO x salts are desorbed from the storage catalyst.
  • the known engine control allows operation of the diesel engine in a desalting mode in which a higher temperature is generated in the storage catalyst than in the storage mode and regeneration mode and in which alternately a reducing exhaust gas and an oxidizing exhaust gas will be generated, whereby at least the SO x Salts are desorbed from the storage catalyst.
  • EP 1 050 675 A1 EP 1 105 629 A0 and the EP 1 183 453 A0 are further generic motor controls
  • EP 1 050 675 A1 EP 1 105 629 A0 and the EP 1 183 453 A0 are further generic motor controls
  • they are only for the question novelty for like-named Contracting States are.
  • the present invention deals with the problem for a motor control of the type mentioned a to provide improved embodiment, in particular a has increased efficiency and effectiveness.
  • the inventive embodiment in which the ⁇ -values in Desalting mode are always smaller than in the storage mode, as particularly advantageous.
  • a lean operated Diesel engine usually operates with ⁇ values of 1.3 to 10.
  • the inventive control causes in desalination mode, operation with ⁇ values ⁇ 1.3.
  • a diesel engine operating in the Regeneration mode substoichiometric, d. H. with ⁇ ⁇ 1 is operated, according to the invention provided that the Engine control according to the invention the diesel engine in Desalting mode is operated so that the ⁇ values are always greater are as in the regeneration mode of the diesel engine.
  • the control according to the invention actuates the Diesel engine so that this in desalting ⁇ values which are always greater than 0.85.
  • Preferably works according to the invention operated diesel engine in Desalting mode with ⁇ values ⁇ 0.88, in particular with ⁇ ⁇ 0.9, e.g. ⁇ 0.97.
  • a particularly advantageous embodiment is characterized formed that the diesel engine alternately in desalination mode superstoichiometric, d. H. with an air-fuel ratio ⁇ > 1, and substoichiometric, d. H. with a Air-fuel ratio ⁇ ⁇ 1 is operated.
  • the Stoichiometric operation becomes the oxidizing Exhaust gas generated during the stoichiometric operation of the causing reducing exhaust gas.
  • the diesel engine Permanently stoichiometric in desalting mode ie with ⁇ ⁇ 1
  • secondary air supply switched off is in the storage catalytic converter then from the diesel engine in substoichiometric operation produced, reducing acting Exhaust gas available while switched on Secondary air supply of the supplied oxygen to the exhaust gas in the Storage catalyst gives the desired oxidizing effect.
  • this points into the storage catalytic converter introduced exhaust gas secondary air mixture a superstoichiometric air-fuel ratio.
  • the temperature in the storage catalyst is during the Desalting mode preferably at least 500 to 600 ° C to the To support desalination.
  • the change takes place between reducing and oxidizing atmosphere in the Storage catalyst with a frequency of about 1 to 10 Hz instead of.
  • An increase in temperature, for example, by a late fuel post-injection can be achieved.
  • controller operates the diesel engine only following an operation in the regeneration mode in the desalting mode, ie, that a desorption of salts with relatively high chemical binding energy, such. B. SO x , is only carried out when previously the salts with relatively low chemical binding energy, such as. B. NO x , have been desorbed from the storage catalyst.
  • This procedure allows a particularly efficient desorption of the salts with relatively high chemical binding energy.
  • an exhaust gas turbocharger 1 sucks on its Compressor inlet side fresh air according to the arrow a on.
  • an exhaust gas turbocharger 1 can also another Charger, z. B. a mechanical loader and / or a so-called "booster".
  • the sucked Fresh air flows through at a correspondingly increased pressure Heat exchanger 2, which serves as intercooler, and reached a throttle point 3 in a suction line 4 a Diesel engine 10.
  • throttle 3 is a throttle 5 arranged, via an actuator 6 of a power-operated actuator 7 is actuated.
  • Throttle 3 After Throttle 3 first passes through the fresh air Suction pipe 16 and then reaches an air-collecting chamber 8, from where from them via separate inlet channels 9 the combustion areas of the Diesel engine 10 is supplied.
  • the inlet channels 9 are each individual throttle valves 11 are arranged, the according to the embodiment via a common Actuator 12 of a servo-operated actuator 13th are operable.
  • Downstream of the diesel engine 10 are those during combustion formed exhaust gases in an exhaust gas collection chamber 14 with a Exhaust gas recirculation line 15 in the intake manifold 16, d. H. here after the throttle 3 and in front of the air collection chamber 8 in the Air intake 4 opens.
  • the exhaust gas recirculation line 15 also upstream of the Throttle 3 to the intake of the diesel engine 10th be connected.
  • an exhaust gas recirculation valve 17 In the mouth region of the exhaust gas recirculation line 15 is in Intake manifold 16, an exhaust gas recirculation valve 17 is arranged, the via an actuator 18 of a power-operated Actuator 19 can be actuated.
  • an actuator 18 of a power-operated Actuator 19 can be actuated.
  • the exhaust gas recirculation line 15 with a heat exchanger 20 in the heat exchange, so that optionally achieved cooling of the recirculated exhaust gas can be.
  • the turbine inlet section and / or the turbine flowing exhaust gas flow is with the help of a Actuator 21 changeable, that of a power-operated Actuator 22 is actuated.
  • a Actuator 21 changeable that of a power-operated Actuator 22 is actuated.
  • the exhaust gas according to the Arrow b an exhaust purification device 28 fed, the in Fig. 1 by a dashed lines shown Frame is marked and described in more detail below becomes.
  • the diesel engine 10 is powered by a motor control or Motor control 23 controlled or regulated, what this over Lines with the corresponding units of the diesel engine 10 is connected.
  • a line 24th shown, which the engine control with a Injection 25 of the diesel engine 10 connects.
  • Further Lines 34, 35, 36 and 37 connect the controller 23 with the Actuators 22, 13, 19 and 7.
  • the exhaust gas purification device 28 has an adsorber or storage catalytic converter 29, which is preferably designed as a NO x storage catalytic converter.
  • the exhaust gas purification device 28 further comprises an oxidation catalyst 30 arranged upstream or downstream of the NO x storage catalytic converter 29.
  • the two catalytic converters 29 and 30 are connected to one another by at least one possibly thermally insulated pipe 31 which is, for example, air-gap or mat-insulated.
  • a first ⁇ probe 32 is arranged in the exhaust line of the diesel engine 10, which is connected via a corresponding signal line 33 to the controller 23.
  • a first temperature sensor 38 is arranged, which is connected via a signal line 39 to the controller 23.
  • ⁇ probes and temperature sensors may be housed in the exhaust line of the diesel engine 10.
  • NO x sensor 42 is provided which communicates downstream of the storage catalytic converter 29 with the exhaust line and is also connected to the controller 23.
  • a secondary air feed 43 may be provided be the fresh air over one to the exhaust system connected supply line 44 downstream of the diesel engine 10, here downstream of the turbocharger 1, and upstream of the Storage catalytic converter 29 introduces into the exhaust system.
  • the Amount of the supplied secondary air is via a controllable Supply valve 45 adjustable via a corresponding Control line 46 is connected to the motor controller 23.
  • the secondary air can, for example, from the pressure side of the Be exhausted exhaust gas turbocharger 1. Likewise, the Secondary air available in another suitable way be put.
  • the storage catalytic converter 29 may be provided with a heating device 27 be equipped in Fig. 1 by a in the Storage catalytic converter 29 symbolizes integrated heating coil is.
  • control according to the invention operates as follows:
  • the controller 23 operates the diesel engine 10 to operate in a storage mode in which the diesel engine 10 operates more than stoichiometrically. In such a lean operation thus prevails for the combustion of the diesel fuel, an excess of atmospheric oxygen, so that ⁇ > 1 applies.
  • the diesel engine 10 is operated in its storage mode with ⁇ -values of 1.3 to 10, wherein the change of the ⁇ -value can be realized by varying the injected amount of fuel.
  • the exhaust gases of the diesel engine 10 are mainly salts with relatively low chemical binding energy, usually NO x , as well as significantly less salts with relatively high chemical binding energy, such as. Eg SO x .
  • both the NO x salts and the SO x salts are adsorbed by the storage catalytic converter 29.
  • the storage capacity of the storage catalytic converter 29 decreases, so that a regeneration of the storage catalytic converter 29 must be performed.
  • the time at which such a regeneration must be performed can be determined by means of calculation models or, for example, with the aid of the NO x sensor 42.
  • the controller 23 switches the operation of the diesel engine 10 to a regeneration mode in which the diesel engine 10 operates at a substoichiometric ratio of atmospheric oxygen and fuel.
  • this "rich operation” no complete combustion of the injected fuel can be realized in the diesel engine 10, so that unburned fuel is still contained in the exhaust gas.
  • the diesel engine 10 is operated in its regeneration mode, for example, with a ⁇ value of 0.85.
  • the unburned fuel in the exhaust gas serves as a reducing agent, so that the exhaust gas supplied to the storage catalytic converter 29 has a reducing effect. Due to this reducing atmosphere, the nitrates stored in the storage catalyst 29 can be desorbed and transported away.
  • the regeneration mode is operated until the nitrates adsorbed in the storage catalyst 29 are almost completely desorbed. Since the sulfates have a higher chemical binding energy relative to the nitrates, they are thermodynamically more stable, so that during denitrification or denitration in the regeneration mode there is virtually no desorption of the SO x salts. However, the occupied by the sulfates surface of the storage catalyst 29 is no longer available for storing the nitrates. Over time, the salts accumulate with relatively high chemical binding energy, so usually the sulfates in the storage catalytic converter 29 more and more, causing its NO x storage capacity decreases more and more. From a certain threshold, the controller 23 decides that desulfurization or desulfation of the NO x storage catalyst 29 must be performed.
  • the controller 23 Prior to such desulfation, the controller 23 causes First, a denitrification by the operation of the Diesel engine 10 is switched to the regeneration mode.
  • the controller 23 switches the diesel engine operation either directly on one Desalting mode or initially back to the storage mode and then to the desalting mode.
  • this Desalting mode becomes the storage catalyst 29 alternately reducing exhaust gas and oxidizing exhaust gas fed.
  • this alternating occurs Change between reduction and oxidation in that constant between a lean operation and a fat operation of the Diesel engine 10 is switched.
  • the ⁇ values in the fat operation of the desalting mode always are greater than the ⁇ values in the rich mode of the Regeneration mode.
  • the ⁇ values are in Lean operation of the desalting mode always smaller than the ⁇ values in lean operation of the storage mode.
  • the heating coil 27 are activated.
  • a targeted late post-injection of Fuel a temperature increase in the exhaust line, in particular in the storage catalytic converter 29.
  • the alternating Change between oxidizing exhaust gas and reducing acting exhaust gas can be achieved in that the diesel engine 10 is permanently operated fat in desalting mode, wherein alternately the secondary air supply 43 is turned on and is switched off. With secondary air supply switched on 43 is then so much atmospheric oxygen in the rich exhaust introduced that upstream of the storage catalyst 29th gives a lean exhaust gas composition.
  • the storage catalytic converter 29 By means of this alternately reducing and oxidizing atmosphere at a generally elevated temperature in the storage catalyst 29, it is possible to reduce the salts in the reduction phases and to oxidize them in the oxidation phases. Harmful secondary emissions, such. B. H 2 S, can be avoided. It is clear that the storage catalytic converter 29 to a certain extent also has an oxidation and reduction function or reducing and oxidizing properties for realizing the above-described reduction and oxidation processes.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)

Claims (8)

  1. Commande de moteur qui permet un fonctionnement d'un moteur diesel (10) dans un mode de stockage, dans lequel, dans les gaz d'échappement du moteur diesel (10) sont adsorbés dans un catalyseur à stockage (29) disposé dans une ligne d'échappement du moteur diesel (10) des premiers sels avec une énergie chimique de liaison relativement faible, par exemple du NOx, et des deuxièmes sels avec une énergie chimique de liaison relativement élevée, par exemple du SOx,
    la commande de moteur (23) permettant un fonctionnement du moteur diesel (10) dans un mode de régénération, dans lequel est produit un gaz d'échappement à action de réduction, ce qui provoque la désorption au moins des premiers sels du catalyseur à stockage (29) et
    la commande de moteur (23) permettant un fonctionnement du moteur diesel (10) dans un mode de dessalement, dans lequel une température plus élevée est produite dans le catalyseur à stockage (29) que dans le mode de stockage et dans le mode de régénération et dans lequel sont produits alternativement un gaz d'échappement à action de réduction et un gaz d'échappement à action d'oxydation, ce qui provoque la désorption au moins des deuxièmes sels du catalyseur à stockage (29),
       caractérisée
    en ce que, dans le mode de stockage, le moteur diesel (10) est exploité en surstoechiométrie (λ>1), les valeurs λ étant toujours plus faibles dans le mode de dessalement que dans le mode de stockage et/ou
    en ce que, dans le mode de régénération, le moteur diesel (10) est exploité en sous-stoechiométrie (λ<1), les valeurs λ étant toujours plus fortes dans le mode de dessalement que dans le mode de régénération.
  2. Commande de moteur selon la revendication 1, caractérisée en ce que, dans le mode de dessalement, les valeurs λ sont toujours inférieures à 1,3.
  3. Commande de moteur selon la revendication 1 ou 2, caractérisée en ce que, dans le mode de dessalement, les valeurs λ sont toujours supérieures à 0,85.
  4. Commande de moteur selon l'une quelconque des revendications 1 à 3, caractérisée en ce que, dans le mode de dessalement, le moteur diesel (10) est exploité alternativement en surstoechiométrie (λ>1) et en sous-stoechiométrie (λ<1).
  5. Commande de moteur selon l'une quelconque des revendications 1 à 3, caractérisée en ce que, dans le mode de dessalement, le moteur diesel (10) est exploité en sous-stoechiométrie (λ<1), une arrivée d'air secondaire (43) raccordée entre le moteur diesel (10) et le catalyseur à stockage (29) à la ligne de gaz d'échappement étant alternativement mise en service et arrêtée.
  6. Commande de moteur selon l'une quelconque des revendications 1 à 5, caractérisée en ce que, dans le mode de dessalement, a lieu à une fréquence d'environ 1 à 10 Hz une commutation entre les gaz d'échappement à effet de réduction et les gaz d'échappement à effet de d'oxydation.
  7. Commande de moteur selon l'une quelconque des revendications 1 à 6, caractérisée en ce qu'au cours du mode de dessalement la température dans le catalyseur à stockage (29) est supérieure à 500°C.
  8. Commande de moteur selon l'une quelconque des revendications 1 à 7, caractérisée en ce que le moteur diesel (10) n'est exploité dans le mode de dessalement qu'à la suite d'une exploitation dans le mode de régénération.
EP00113356A 1999-08-24 2000-06-23 Commande de moteur pour un moteur diesel Expired - Lifetime EP1079079B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19939988A DE19939988A1 (de) 1999-08-24 1999-08-24 Verfahren zum Betreiben eines Dieselmotors
DE19939988 1999-08-24

Publications (3)

Publication Number Publication Date
EP1079079A2 EP1079079A2 (fr) 2001-02-28
EP1079079A3 EP1079079A3 (fr) 2003-02-12
EP1079079B1 true EP1079079B1 (fr) 2004-03-03

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EP00113356A Expired - Lifetime EP1079079B1 (fr) 1999-08-24 2000-06-23 Commande de moteur pour un moteur diesel

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EP (1) EP1079079B1 (fr)
DE (2) DE19939988A1 (fr)
ES (1) ES2215524T3 (fr)

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DE10029504C2 (de) 2000-06-21 2003-04-30 Daimler Chrysler Ag Verfahren zum Betrieb eines Dieselmotors
US7293407B2 (en) 2000-06-21 2007-11-13 Daimlerchrysler Ag Method for operating a diesel engine
DE10153901B4 (de) * 2001-10-12 2011-07-14 Volkswagen AG, 38440 Verfahren und Vorrichtung zur Entschwefelung eines einem Dieselmotor nachgeschalteten NOx-Speicherkatalysators
DE10158333A1 (de) * 2001-11-28 2003-06-18 Bosch Gmbh Robert Verfahren zum Betreiben einer Brennkraftmaschine und Brennkraftmaschine
DE10248734B4 (de) * 2002-10-18 2004-10-28 Litef Gmbh Verfahren zur elektronischen Abstimmung der Ausleseschwingungsfrequenz eines Corioliskreisels
EP1510672B1 (fr) * 2003-08-26 2012-06-20 Volvo Car Corporation Arrangement de capteur d'oxygène
DE102004052062A1 (de) * 2004-10-26 2006-04-27 Volkswagen Ag Verfahren und Vorrichtung zur Regenerierung von Speicherkatalysatoren

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Publication number Priority date Publication date Assignee Title
JP2605586B2 (ja) * 1992-07-24 1997-04-30 トヨタ自動車株式会社 内燃機関の排気浄化装置
DE19731623B4 (de) * 1997-07-23 2006-11-23 Volkswagen Ag Verfahren und Vorrichtung zur De-Sulfatierung von NOx-Speichern bei Dieselmotoren
US5974788A (en) * 1997-08-29 1999-11-02 Ford Global Technologies, Inc. Method and apparatus for desulfating a nox trap
DE19750226C1 (de) 1997-11-13 1998-10-29 Daimler Benz Ag Motorregelsystem für einen Dieselmotor
DE19920515C2 (de) * 1999-05-05 2003-03-20 Daimler Chrysler Ag Abgasreinigungsanlage mit Stickoxidadsorber und Desulfatisierungsverfahren hierfür
DE19922962C2 (de) * 1999-05-19 2003-02-27 Daimler Chrysler Ag Verfahren zur periodischen Desulfatisierung eines Stickoxid- oder Schwefeloxid-Speichers einer Abgasreinigungsanlage
DE19923481A1 (de) * 1999-05-21 2000-11-23 Volkswagen Ag Verfahren zur Entschwefelung von wenigstens einem in einem Abgaskanal einer Verbrennungskraftmaschine angeordneten NOx-Speicherkatalysator

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Publication number Publication date
DE50005490D1 (de) 2004-04-08
DE19939988A1 (de) 2001-03-15
ES2215524T3 (es) 2004-10-16
EP1079079A2 (fr) 2001-02-28
EP1079079A3 (fr) 2003-02-12

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