WO2001000972A1 - Verfahren zur steuerung eines arbeitsmodus einer verbrennungskraftmaschine - Google Patents
Verfahren zur steuerung eines arbeitsmodus einer verbrennungskraftmaschine Download PDFInfo
- Publication number
- WO2001000972A1 WO2001000972A1 PCT/EP2000/004978 EP0004978W WO0100972A1 WO 2001000972 A1 WO2001000972 A1 WO 2001000972A1 EP 0004978 W EP0004978 W EP 0004978W WO 0100972 A1 WO0100972 A1 WO 0100972A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- internal combustion
- combustion engine
- temperature
- cell
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
- F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
- F01N3/0842—Nitrogen oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- 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
- F01N2430/00—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics
- F01N2430/06—Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by varying fuel-air ratio, e.g. by enriching fuel-air mixture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2570/00—Exhaust treating apparatus eliminating, absorbing or adsorbing specific elements or compounds
- F01N2570/04—Sulfur or sulfur oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0802—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
- F02D2200/0808—NOx storage capacity, i.e. maximum amount of NOx that can be 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
- F02D2200/0818—SOx storage amount, e.g. for SOx trap or NOx trap
Definitions
- the invention relates to a method for controlling a working mode of an internal combustion engine with the features mentioned in the preamble of claim 1.
- gaseous pollutants are produced in varying proportions, which can act on the one hand as a reducing agent and on the other hand as an oxidizing agent.
- Reducing agents such as CO, HC or H2 are increasingly produced under conditions in which a ratio of oxygen to a fuel is sub-stoichiometric or stoichiometric ( ⁇ ⁇ 1; regeneration mode). If, on the other hand, the oxygen in the air-fuel mixture predominates, the internal combustion engine is in lean operation ( ⁇ > 1) and a proportion of the reducing agents in the exhaust gas decrease.
- oxidizing agents such as NO x and SO x are also formed during a combustion process. These are reduced on the storage catalyst in the regeneration mode by the reducing agents. In a lean operation, this is no longer possible to a sufficient extent, but the oxidizing agents are stored in the storage catalytic converter under such conditions. NO x absorption takes place until a NO x desorption temperature is reached or until the NO x storage capacity of the storage catalytic converter is exhausted. Before this time, a change to the regeneration mode must take place in order to reduce NO x emissions downstream of the storage catalytic converter. For this purpose, it is known to control the working mode as a function of an average catalyst temperature.
- the catalyst temperature can be detected, for example, using sensors additionally introduced into the exhaust gas duct, or else can be calculated in a known manner using suitable models. If the catalyst temperature exceeds a predefinable threshold temperature, a switch to regeneration mode is initiated in order to prevent NO x desorption without a simultaneous reduction. On the other hand, the storage catalytic converter must be heated to a minimum operating temperature in order to ensure sufficient NO x storage capacity. It is known to operate the internal combustion engine in regeneration mode until a predeterminable minimum temperature is reached. In such an operation, an exhaust gas temperature is generally higher than in lean operation. However, additional fuel consumption must be accepted. To reduce fuel consumption, it is therefore necessary to keep the duration of the regeneration operation as short as possible.
- the invention has for its object to provide a method which allows in a particularly simple and flexible manner to take into account an inhomogeneous temperature profile within the storage catalytic converter when controlling the working mode of the internal combustion engine. Along with this, fuel consumption should be reduced.
- this object is achieved by the method for controlling the working mode of the internal combustion engine with the features mentioned in claim 1.
- the storage catalytic converter is divided into a number of catalytic converter cells in accordance with a predeterminable matrix;
- the working mode of the internal combustion engine is determined as a function of the cell temperature of at least one predeterminable catalyst cell
- the lean operation of the internal combustion engine is preferably set to ⁇ > 1 if the cell temperature in at least one catalyst cell lies between a predeterminable lower limit temperature and a predeterminable upper limit temperature.
- the lower limit temperature is selected such that the minimum operating temperature is exceeded and the storage catalytic converter has an overall sufficient NO x storage capacity.
- the upper limit temperature is below the NO x desorption temperature. The lean operation of the internal combustion engine can therefore still be maintained if the average catalyst temperature has already exceeded the upper limit temperature, but is still at least one catalyst cell below the predefinable upper limit temperature, and the internal combustion engine can already start lean operation in at least one catalyst cell after the minimum operating temperature has been exceeded be switched, even if the mean catalyst temperature is below the minimum operating temperature.
- the NO x storage capacity can be used as a further criterion for maintaining lean operation. For this purpose, it is conceivable on the one hand to specify a threshold value for the NO x storage capacity and to start the regeneration operation of the internal combustion engine when the threshold value is exceeded. On the other hand, a cumulative raw NO x emission of the internal combustion engine over a predeterminable period of time and the NO x desorption of each catalyst cell can be calculated over the same period.
- a cumulative NO x emission downstream of the storage catalytic converter can be calculated. If the calculated cumulative NO x emission exceeds a predeterminable threshold value, the regeneration operation of the internal combustion engine is also set.
- the cell temperature is exceeded in at least one catalyst cell above the minimum desulfurization temperature.
- the desulfurization can also be made dependent on a predeterminable threshold value for the SO x loading state. In this way, it is possible to initiate the desulfurization even before an average minimum desulfurization temperature is exceeded, thus shortening a heating-up phase.
- a duration of the heating phase to reach the minimum desulfurization temperature in further downstream catalyst cells can be calculated depending on the cell temperature of further upstream catalyst cells, since these transfer their excess heat (difference between the cell temperature and the minimum desulfurization temperature) downstream during the desulfurization. This shortens the desulfurization time and reduces the additional consumption due to desulfurization.
- Regeneration rate a course of the NO x storage capacity, a course of the NO ⁇ , SO x or 02 loading state or a combination thereof.
- Figure 1 shows an arrangement of a NO x storage catalyst in one
- FIG. 3 shows a schematic representation of a profile of a lambda value during NO x regeneration
- Figure 4 is a schematic representation of the course of the lambda value during a heating phase shortly after the start of the internal combustion engine
- FIG. 5 shows a flow diagram of an exemplary embodiment of the method according to the invention for controlling a working mode of the internal combustion engine
- FIG. 6 shows a flow chart of an exemplary embodiment of the method according to the invention for controlling a working mode of the internal combustion engine during desulfurization.
- FIG. 1 shows a schematic representation of an arrangement 10 with an NO storage catalytic converter 12 in an exhaust gas duct 14 of an internal combustion engine 16.
- the arrangement 10 is only a greatly simplified exemplary embodiment, and additional NO ⁇ storage catalytic converters or precatalysts can also be used in the area of the Exhaust duct 14 are arranged. Such arrangements are known and will not be explained in more detail here.
- sensors are arranged in the exhaust gas channel, which allow a conclusion to be drawn about a current catalytic converter condition, for example by detecting a content of a gas component in an exhaust gas or a temperature.
- a gas sensor 18 and a temperature sensor 20 are shown in the arrangement 10, which are located downstream of the NO Sind storage catalytic converter 12.
- the sensors 18, 20 deliver signals that can be evaluated within an engine control unit 22.
- means 24 are assigned to the internal combustion engine 16, which enable at least a temporary influencing of at least one operating parameter of the internal combustion engine 16. In this way, an exhaust gas temperature, a working mode of the internal combustion engine 16 and / or the The proportion of the individual gas components in the exhaust gas can be varied. Such influencing of the operating parameters of the internal combustion engine 16 is known and will not be explained in more detail in this context.
- reducing agents such as CO, HC and H2
- oxidizing agents such as NO x and SO x
- a working mode with ⁇ ⁇ 1 rich or stoichiometric atmosphere, regeneration mode
- a fuel fraction outweighs an oxygen fraction in the air / fuel mixture or these are in stoichiometric ratios.
- reducing agents are formed to an increased degree.
- the working mode changes in a range with ⁇ > 1 (lean atmosphere, lean operation)
- the proportion of reducing agents in the exhaust gas decreases.
- the reducing agents are oxidized with oxygen. A reduction in a reducing agent emission is therefore always possible to a sufficient extent if an oxygen concentration in the NO x storage catalytic converter 12 is correspondingly high.
- the oxidizing agents are converted in the NO x storage catalytic converter 12 by the reducing agents. To a sufficient degree, this can only be done in a working mode with ⁇ ⁇ 1. In a lean atmosphere, the NO x is absorbed as nitrate and the SO x as sulfate until the NO ⁇ desorption temperature is reached or the NO x storage capacity is exhausted. Before this point in time, therefore, at least one NO x regeneration must be carried out.
- SO ⁇ regeneration (desulfurization) generally does not take place during the NO ⁇ regeneration.
- a working mode with ⁇ ⁇ 1 and a regeneration temperature (depending on the NO ⁇ or SO x desorption temperature) are necessary for regeneration (NO x and SO x regeneration), which together form the regeneration parameters.
- the regeneration parameters can be set in a known manner by influencing the operating parameters of the internal combustion engine 16. It is also known to determine a need for regeneration of the NO x storage catalytic converter 12. This will not be explained in more detail in this context.
- FIG. 2 schematically shows a division of the storage catalytic converter 12 into any number of catalytic converter cells on the basis of a predeterminable matrix shown.
- the matrix for dividing the storage catalytic converter 12 into the catalyst cells can be determined using a storage catalytic converter model.
- This model can include, for example, a spatial extension of the storage catalytic converter 12, a temperature profile or a profile of a regeneration speed within the storage catalytic converter 12. It is also conceivable to use a curve of the NO ⁇ storage capacity and a curve of a loading state for NO x , SO x or O2 within the storage catalytic converter 12.
- the loading state is a measure of an absorbed NO x , SO x or 02 mass of a catalyst cell.
- the storage catalytic converter 12 is Z-
- FIG. 3 shows a course of the lambda value during the regeneration of the storage catalytic converter 12 (dashed line).
- a curve of the lambda value according to a conventional method is also shown for clarification.
- the internal combustion engine 16 is initially in a lean mode for a phase tmi.
- regeneration mode is stopped, at least until the temperature drops below the threshold again.
- Lean operation is then started again in a phase t m 2.
- the course of the lambda value (dashed line) is significantly different.
- the regeneration operation can be started later on the one hand and ended earlier on the other hand.
- ' and t m 2 ' the mean catalyst temperature is temporarily above the limit temperature which can be predetermined by the conventional method, but the temperature in selected catalyst cells (cell temperature) can still be low enough to ensure sufficient NO x storage capacity. The type of control is explained in more detail below.
- FIG. 4 shows a course of the lambda value during a heating phase of the storage catalytic converter 12 (dashed line). Again, a solid line shows the course of the lambda value according to a conventional method.
- a rich or stoichiometric exhaust gas ⁇ 1 1
- the regeneration operation is maintained until the average catalyst temperature has exceeded a minimum temperature.
- a phase tf2 ' is shortened in the process according to the invention, and lean operation can already be started when selected catalyst cells have exceeded the minimum temperature.
- FIG. 5 shows a flow chart for controlling the working mode of the internal combustion engine 16.
- the storage catalytic converter 12 is divided into any number of catalytic converter cells in accordance with the predeterminable matrix.
- the cell temperature for each catalyst cell is subsequently determined in a step S2.
- the cell temperature is either measured directly, for example using additional temperature sensors, or it is calculated using known models.
- a step S3 it is determined whether the cell temperature in a selected number of catalytic converter cells, which is dependent on exhaust gas mass flow and lambda and NOx emissions, between a predeterminable lower limit temperature G-
- represents the minimum operating temperature of the storage catalytic converter 12, which is necessary in order to provide sufficient NO x storage capacity at all.
- the upper limit temperature G2 is selected such that it is below the NO ⁇ desorption temperature so that NO x emissions downstream of the storage catalytic converter 12 are avoided. If the cell temperature in the selected catalyst cells is below the lower limit temperature G-), a heating measure can optionally be initiated in a step S4, for example by changing to regeneration mode. If the cell temperature in the selected catalyst cells is above the upper limit temperature G2, a cooling measure can optionally be carried out in step S4 by influencing the operating parameters of the internal combustion engine 16 in a known manner.
- the NO x storage capacity of selected catalyst cells is determined in a step S5. This can in turn be carried out using known storage catalytic converter models for the NO x , SO x or 02 loading state. Reaches the NO x - Storage capacity does not have a predeterminable threshold value S-
- a cumulative NO x emission downstream of the storage catalytic converter is calculated in a predefinable period.
- the catalytic converter cells Z4 to ZQ shown in FIG. 2, which are arranged further downstream in the exhaust gas duct 14, may also have to absorb NO x in addition to the NO x raw emission generated by the internal combustion engine 16, which is caused by NO ⁇ desorption in catalyst cells located further ahead (Z-
- step S7 If the calculated cumulative NO x emission downstream of the storage catalytic converter 12 exceeds a predeterminable threshold value S2, the regeneration operation is started again (step S7). If this is not the case, then the internal combustion engine 16 remains in the lean mode or is adjusted to the lean mode (step S10).
- FIG. 6 shows a flow chart for controlling the operating mode of the internal combustion engine 16 during the desulfurization.
- steps S1 and S2 - as already explained - the storage catalytic converter 12 is first divided into individual catalytic converter cells and the cell temperature of selected catalytic converter cells is recorded. If the cell temperature in the selected catalyst cells is below a minimum desulfurization temperature (step S11), no further action is taken (step S12). Otherwise, it is checked in a step S13 whether the SO x loading state exceeds a predeterminable threshold value S3. If necessary, a duration of the heating phase for the desulfurization is then determined in a step S14.
- the duration of the heating phase for reaching the minimum desulfurization temperature in further downstream catalyst cells can be determined as a function of the cell temperature in further upstream catalyst cells (for example the catalyst cells Z- to Z3 in FIG. 2).
- a heat flow can also take place within the storage catalytic converter 12 between the individual catalyst cells.
- the further upstream catalyst cells have a higher cell temperature. Overall, the regeneration time during desulfurization can be significantly reduced in this way.
- the desulfurization is then carried out in a step S15.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00935153A EP1194683B1 (de) | 1999-06-25 | 2000-05-31 | Verfahren zur steuerung eines arbeitsmodus einer verbrennungskraftmaschine |
JP2001506361A JP4707292B2 (ja) | 1999-06-25 | 2000-05-31 | 内燃機関の運転モード制御方法 |
DE50006166T DE50006166D1 (de) | 1999-06-25 | 2000-05-31 | Verfahren zur steuerung eines arbeitsmodus einer verbrennungskraftmaschine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19929292A DE19929292A1 (de) | 1999-06-25 | 1999-06-25 | Verfahren zur Steuerung eines Arbeitsmodus einer Verbrennungskraftmaschine |
DE19929292.2 | 1999-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001000972A1 true WO2001000972A1 (de) | 2001-01-04 |
Family
ID=7912621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/004978 WO2001000972A1 (de) | 1999-06-25 | 2000-05-31 | Verfahren zur steuerung eines arbeitsmodus einer verbrennungskraftmaschine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1194683B1 (de) |
JP (1) | JP4707292B2 (de) |
CN (1) | CN1185407C (de) |
DE (2) | DE19929292A1 (de) |
WO (1) | WO2001000972A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2856741A1 (fr) * | 2003-06-30 | 2004-12-31 | Renault Sa | Procede et dispositif d'estimation d'une masse d'oxydes d'azote stockee dans un dispositif de piegeage catalytique de vehicule automobile |
JP2008064109A (ja) * | 2007-11-05 | 2008-03-21 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
US8122044B2 (en) | 2003-03-12 | 2012-02-21 | Microsoft Corporation | Generation of business intelligence entities from a dimensional model |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10115962B4 (de) * | 2001-03-27 | 2009-03-05 | Volkswagen Ag | Verfahren zur Entschwefelung eines im Abgasstrang einer Verbrennungskraftmaschine angeordneten NOx-Speicherkatalysators |
DE10117434A1 (de) | 2001-04-03 | 2002-10-10 | Volkswagen Ag | Verfahren zur Steuerung eines Betriebsmodus einer magerlauffähigen Verbrennungskraftmaschine |
US6860101B2 (en) * | 2001-10-15 | 2005-03-01 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification system for internal combustion engine |
DE10221568A1 (de) * | 2002-05-08 | 2003-12-04 | Volkswagen Ag | Verfahren zur Steuerung eines NO¶x¶-Speicherkatalysators |
JP3855920B2 (ja) | 2002-11-29 | 2006-12-13 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
DE10305451A1 (de) * | 2002-12-31 | 2004-07-29 | Volkswagen Ag | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
US7673445B2 (en) * | 2004-11-09 | 2010-03-09 | Ford Global Technologies, Llc | Mechanical apparatus having a catalytic NOx storage and conversion device |
US7363758B2 (en) * | 2004-11-09 | 2008-04-29 | Ford Global Technologies, Llc | Lean burn engine control NOx purging based on positional loading of oxidants in emission control device |
US7565799B2 (en) * | 2005-02-09 | 2009-07-28 | Gm Global Technology Operations, Inc. | Controlling lean NOx trap (LNT) catalyst performance |
WO2011118095A1 (ja) * | 2010-03-25 | 2011-09-29 | Udトラックス株式会社 | エンジンの排気浄化装置及びエンジンの排気浄化方法 |
CN102207015B (zh) * | 2011-05-20 | 2015-02-25 | 潍柴动力股份有限公司 | 一种scr催化器的温度预测装置和方法 |
JP5849858B2 (ja) | 2012-06-01 | 2016-02-03 | トヨタ自動車株式会社 | 内燃機関の触媒保護装置 |
JP6065870B2 (ja) * | 2014-03-28 | 2017-01-25 | マツダ株式会社 | 排気ガス浄化装置の劣化診断方法及び装置 |
CN110284952A (zh) * | 2019-06-28 | 2019-09-27 | 潍柴动力股份有限公司 | 一种柴油机后处理系统催化剂硫中毒的处理方法和装置 |
CN112065541B (zh) * | 2020-09-14 | 2021-11-09 | 安徽江淮汽车集团股份有限公司 | 一种nsc对于氮氧化物的解吸附控制方法 |
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-
1999
- 1999-06-25 DE DE19929292A patent/DE19929292A1/de not_active Withdrawn
-
2000
- 2000-05-31 CN CNB008094098A patent/CN1185407C/zh not_active Expired - Fee Related
- 2000-05-31 JP JP2001506361A patent/JP4707292B2/ja not_active Expired - Fee Related
- 2000-05-31 DE DE50006166T patent/DE50006166D1/de not_active Expired - Lifetime
- 2000-05-31 EP EP00935153A patent/EP1194683B1/de not_active Expired - Lifetime
- 2000-05-31 WO PCT/EP2000/004978 patent/WO2001000972A1/de active IP Right Grant
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US5560200A (en) * | 1993-03-18 | 1996-10-01 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Method and apparatus for functional monitoring of a catalytic converter |
EP0867604A1 (de) * | 1997-03-27 | 1998-09-30 | Ford Global Technologies, Inc. | Verfahren und Einrichtung zur Aufrechterhaltung der Katalysatorfähigkeit einer Stickoxidfalle |
DE19851564A1 (de) * | 1998-11-09 | 2000-05-11 | Siemens Ag | Verfahren zum Betreiben und Überprüfen eines NOx-Speicherreduktionskatalysators einer Mager-Brennkraftmaschine |
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US8122044B2 (en) | 2003-03-12 | 2012-02-21 | Microsoft Corporation | Generation of business intelligence entities from a dimensional model |
FR2856741A1 (fr) * | 2003-06-30 | 2004-12-31 | Renault Sa | Procede et dispositif d'estimation d'une masse d'oxydes d'azote stockee dans un dispositif de piegeage catalytique de vehicule automobile |
WO2005003529A1 (fr) * | 2003-06-30 | 2005-01-13 | Renault S.A.S | Procede et dispositif d’estimation d’une masse d’oxydes d’azote stockee dans un dispositif de piegeage catalytique de vehicule automobile |
US7219008B2 (en) | 2003-06-30 | 2007-05-15 | Renault S.A.S. | Method and device for estimating a nitrogen oxide mass stored in a catalytic trapping device of a motor vehicle |
JP2008064109A (ja) * | 2007-11-05 | 2008-03-21 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP4615001B2 (ja) * | 2007-11-05 | 2011-01-19 | トヨタ自動車株式会社 | 内燃機関の排気浄化装置 |
Also Published As
Publication number | Publication date |
---|---|
JP4707292B2 (ja) | 2011-06-22 |
JP2003503622A (ja) | 2003-01-28 |
DE50006166D1 (de) | 2004-05-27 |
DE19929292A1 (de) | 2000-12-28 |
CN1358254A (zh) | 2002-07-10 |
CN1185407C (zh) | 2005-01-19 |
EP1194683A1 (de) | 2002-04-10 |
EP1194683B1 (de) | 2004-04-21 |
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