EP1255922A2 - Vorrichtung und verfahren zur steuerung eines betriebes eines mehrzylindermotors für kraftfahrzeuge mit einer mehrflutigen abgasreinigungsanlage - Google Patents
Vorrichtung und verfahren zur steuerung eines betriebes eines mehrzylindermotors für kraftfahrzeuge mit einer mehrflutigen abgasreinigungsanlageInfo
- Publication number
- EP1255922A2 EP1255922A2 EP01902335A EP01902335A EP1255922A2 EP 1255922 A2 EP1255922 A2 EP 1255922A2 EP 01902335 A EP01902335 A EP 01902335A EP 01902335 A EP01902335 A EP 01902335A EP 1255922 A2 EP1255922 A2 EP 1255922A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- mode
- catalyst
- catalytic converter
- state
- exhaust
- 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
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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
-
- 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
-
- 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
- F02D41/1443—Plural sensors with one sensor per cylinder or group of cylinders
-
- 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 ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/107—More than one exhaust manifold or exhaust collector
-
- 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
- F01N2550/00—Monitoring or diagnosing the deterioration of exhaust systems
- F01N2550/03—Monitoring or diagnosing the deterioration of exhaust systems of sorbing activity of adsorbents or absorbents
-
- 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
Definitions
- the invention relates to a device and a method for controlling an operation of a multi-cylinder engine for motor vehicles with a multi-flow exhaust gas cleaning system with the features mentioned in the preambles of the independent claims.
- Multi-cylinder engines are often divided into sub-units, each of which groups a number of cylinders (bank). For example, a twelve-cylinder engine can be divided into three banks of four cylinders. Each bank is assigned a separate exhaust line, at least in certain areas, in which components of the exhaust gas cleaning system can be accommodated.
- Such components include, for example, particle filters and catalysts, which enable conversion of pollutants formed during a combustion process into less environmentally relevant products. Examples include oxidation catalysts for the oxidation of reducing agents, such as carbon monoxide CO and incompletely burned hydrocarbons HC, and reduction catalysts for reducing nitrogen oxides NO x .
- actuating means can be assigned to each bank, which allow the combustion process in the respective banks to be designed separately from one another.
- Such actuating means can comprise, for example, exhaust gas recirculation devices, injection systems or throttle valves arranged in separate intake pipes.
- a sensor system in the exhaust gas lines that makes it possible to detect the air conditions in the exhaust gas or also selected proportions of pollutants in the exhaust gas.
- the signals detected by the sensor system are read into a control device, which then specifies manipulated variables according to predefined models. In this way, for example, homogeneous or stratified lean operation, stoichiometric operation or rich operation of the multi-cylinder engine required at very high loads can be realized.
- NO x storage catalytic converter is integrated in each of the exhaust gas stretches of the exhaust gas purification system, this requires special operating modes in order to prevent undesirably high pollutant emissions and permanent damage to the catalytic converter.
- single-flow exhaust gas purification systems numerous procedures for carrying out the operating modes of the NO x storage catalytic converter are known.
- lean operation in particular in the consumption-optimized area for gasoline engines with lambda around 1.1, a raw NO x emission from the engine is greatly increased, and at the same time the reducing agents CO and HC required for conversion are greatly reduced.
- NO x is therefore absorbed as nitrate in a lean atmosphere in a NOx storage component of the catalyst, until either an NO ⁇ storage capacity is exhausted or a desorption temperature is exceeded.
- NO x regeneration must take place by changing to a stoichiometric or rich atmosphere.
- a procedure can be stored in a control unit with which a specification for the suitable actuating means takes place as a function of signals from a gas sensor detected downstream of the NO ⁇ storage catalytic converter.
- Other measures for example desulfurization or heating of the catalyst to a minimum operating temperature, can also be carried out in the same manner.
- the solutions shown cannot simply be transferred to multi-flow exhaust gas purification systems of the type mentioned above, since catalytic converter states and operating parameters can differ significantly from one another in the respective exhaust gas lines.
- the invention has for its object to provide a device and a method with which a coordinated control of the operating modes of each bank with regard to a low pollutant emission but also taking into account fuel consumption and operating parameters of the multi-cylinder engine is made possible.
- this object is achieved by a device and a method for controlling an operation of a multi-cylinder engine for motor vehicles with a multi-flow exhaust gas cleaning system with the features mentioned in the independent claims.
- the operating modes of each bank are set as a function of a coordination mode and a catalyst state and / or pollutant emission in all exhaust gas lines.
- the device according to the invention has means for carrying out the method steps, for example a control device, in which a procedure for coordinated control is stored in digitized form.
- the control unit can preferably be part of an engine control unit.
- the coordination mode preferably comprises an autonomous mode, a dominant mode, a weighted mode or an interactive mode, between which a change is made as a function of status and operating parameters of the motor vehicle and its aggregates during the operation of the multi-cylinder engine.
- the status and operating parameters can preferably include a driver's request, a load situation, a total NOx emission downstream of all exhaust gas lines, a raw NO ⁇ emission of the multi-cylinder engine and the catalytic converter status, so that, for example, an operating situation-optimized choice of the coordination mode is made possible with a complex map.
- the catalyst state in the form of a sulfur loading and / or a NO x loading and / or a catalyst temperature. It is also conceivable to estimate the catalytic converter state by comparing a current NO x storage capacity of the NO x storage catalytic converter with a measured or modeled NO 2 storage capacity of a fresh NO ⁇ storage catalytic converter.
- the operating modes of the banks preferably include procedures for performing NO ⁇ regeneration, desulfurization and catalyst heating. Overall, a large number of parameters are thus available for the control according to the invention, with which almost all measures necessary for optimal operation of the exhaust gas cleaning system can be taken.
- each bank is controlled in the autonomous mode only as a function of the catalytic converter state and / or the pollutant emission in the respectively assigned exhaust line. Under such a condition, the total emission of the multi-cylinder engine is particularly low, but in certain circumstances an increased fuel consumption has to be accepted.
- the catalytic converter status and / or the pollutant emission is only recorded in one of the exhaust gas lines and used for the synchronous control of all banks.
- Such a method is particularly easy to implement and requires only a relatively small amount of storage space and computing capacity.
- Such a control is always appropriate if one of the banks temporarily or permanently has a major share in the total emissions of the multi-cylinder engine.
- the state of the catalyst and / or the pollutant emission in each exhaust line is recorded and multiplied by a weighting factor. The weighted quantities are then combined into an average, and all banks are controlled synchronously on the basis of the average.
- the weighting factor can only take into account the number of cylinders per bank, so that, for example, in the case of a twelve-cylinder engine consisting of three banks of four cylinders, the weighting factor per bank is one third.
- the weighting factor is preferably determined as a function of the catalytic converter state, so that, for example, as irreversible damage to a NO x storage catalytic converter progresses, the weighting factor becomes smaller, so that overall the pollutant emission from a bank can increase slightly, but an increase in fuel consumption as a result of unnecessarily frequent regeneration the NO ⁇ storage catalysts of the other banks is avoided. It has also proven to be advantageous to determine the weighting factor separately for each procedure to be carried out.
- the catalytic converter status and / or the pollutant emission in each exhaust line is recorded and used for the synchronous control of all banks.
- an initial impulse for NO für regeneration, desulfurization or catalyst heating is set if there is a need for these measures in one of the exhaust gas lines.
- An ending impulse for the NO x regeneration, the desulfurization or the catalyst heating is present when the measure in each of the exhaust lines is finished. In this way it can be ensured, similarly as in the self-sufficient mode, that the measures are carried out completely for each of the catalysts.
- such simultaneous implementation of the measures can be implemented much more easily and integrated into the existing engine control system and is therefore the preferred mode in the case of rapidly changing operating situations.
- Figure 1 is a schematic diagram for controlling an operation of a
- FIG. 2 shows a course of the air conditions in different exhaust gas lines of the multi-cylinder engine over time
- Figure 3 is a schematic diagram for controlling the operation of the
- FIG. 4 shows a course of pollutant emissions in the exhaust gas lines over time
- Figure 5 is a schematic diagram for controlling the operation of the
- Figure 6 is a flow chart for coordinated control.
- FIG. 1 shows a schematic diagram of a multi-cylinder engine 10.
- the multi-cylinder engine 10 is divided into a total of three banks 1, 2, 3, each with four cylinders 50.
- An exhaust gas cleaning system 60 is arranged downstream of the multi-cylinder engine 10.
- Each of the banks 1, 2, 3 opens into an exhaust line 11, 12, 13 that is separate at least at the beginning.
- the NOx storage catalytic converters 21, 22, 23 each integrate the exhaust gas lines 11, 12, 13.
- other components for purifying the exhaust gas such as pre-catalysts and particle filters, can also be present in the exhaust lines 11, 12, 13, but have not been included here for reasons of clarity.
- the sensors include, for example, temperature sensors with which a catalyst temperature or an exhaust gas temperature can be detected.
- the sensor system can include gas sensors which make it possible to determine an air ratio downstream and upstream of the NO x storage catalytic converters 21, 22, 23 or also a proportion of one Determine pollutant on the exhaust gas.
- the gas sensors are then designed, for example, as lambda sensors or NO x sensors.
- the individual banks 1, 2, 3 are assigned control units, which detect signals provided by the sensor system and, depending on these signals, output control variables for the actuating means assigned to the individual banks 1, 2, 3.
- the control units can be part of a control unit with which a coordinated control of the individual banks 1, 2, 3, which will be explained in more detail below, is carried out.
- the actuating means include, for example, separate injection systems, exhaust gas recirculation devices or throttle valves arranged in separate intake pipes. For the sake of clarity, the positioning means and the control device or the control units are not shown.
- a catalytic converter state K of the NO x storage catalytic converters 11, 12, 13 can be determined, for example, on the basis of its sulfur loading, NO x loading,
- Catalyst temperature or its irreversible degree of damage can be characterized.
- the necessary sensors and the corresponding methods for determining the catalytic converter state K are known and are therefore not to be explained in more detail here.
- the measures M j are also known, which must be taken for optimal and permanent operation of the NO x storage catalytic converters 21, 22, 23. In this way, procedures can be stored in the control unit which are used to carry out NO x regeneration, desulfurization and catalyst heating. In the configuration of the control for multi-flow exhaust gas cleaning systems 60 according to the invention, these procedures are accompanied by a change in the operating modes of banks 1, 2, 3.
- FIG. 1 and FIGS. 3 and 5 to be explained in more detail below also contain a time window in which it is shown which measures Mj are currently being taken in the individual banks 1, 2, 3.
- Triangles stand for an end of the catalyst heating, hexahedra for a start of NO ⁇ regeneration and diamonds for a start of desulfurization. Filled areas indicate when the measures Mj were actually taken, while unfilled characters indicate when the respective measure Mj was taken in completely self-sufficient banks 1, 2, 3.
- FIG. 1 and FIGS. 3 and 5 to be explained in more detail below also contain a time window in which it is shown which measures Mj are currently being taken in the individual banks 1, 2, 3.
- Triangles stand for an end of the catalyst heating, hexahedra for a start of NO ⁇ regeneration and diamonds for a start of desulfurization. Filled areas indicate when the measures Mj were actually taken, while unfilled characters indicate when the respective measure Mj was taken in completely self-sufficient banks 1, 2, 3.
- FIG. 6 shows a flowchart for a method for controlling the operation of the multi-cylinder engine 10, in which the operating modes of each bank 1, 2, 3 as a function of a coordination mode and the catalytic converter state K and / or a pollutant emission EM in all exhaust lines 11, 12, 13 can be carried out (coordinated control).
- First, status and operating parameters P of the motor vehicle and its aggregates are read into the control unit.
- the slaughtersund operating parameters P can be, for example, a driver's request FW, a load situation LS, a total NOx emissions GE downstream of all the exhaust pipes 11, 12, 13, a NO x -Rohemission RE of the multi-cylinder engine 10 and the catalyst state K.
- the parameters P mentioned are recorded, for example, in a map which is used to determine the coordination mode.
- the coordination mode can be an autonomous mode A, a dominant mode D, a weighted mode G or an interactive mode I. Each of these modes determines how the recorded catalyst states or pollutant emissions are to be evaluated.
- a pulse that initiates or ends the measure Mj is determined.
- the introductory pulse can be determined in such a way that a characteristic value KW j D is initially specified in accordance with the determined mode, which is compared with a threshold value SW j D. If the characteristic value KWj b exceeds the threshold value SW, D , the measure Mj is initiated. Measure Mj is terminated in an almost equivalent manner after a stop pulse has been issued.
- characteristic values KWj e and threshold values SWj e are compared with one another.
- the self-sufficient mode A corresponds to the unfilled character or the dashed outline.
- Such a mode is always preferred when relatively constant operating conditions of the motor vehicle are present and the lowest possible emission of pollutants is desired. Since such a mode can only be coordinated with existing engine control systems for drive control with a considerable amount of computation, this mode is particularly advantageous when there are phases of constant load.
- the catalytic converter state K and / or the pollutant emission EM in each exhaust line 11, 12, 13 is recorded and used for the synchronous control of all banks 1, 2, 3.
- the catalyst heating is only ended, when a minimum operating temperature of the NO x storage catalytic converters 21, 22, 23 is reached in all exhaust lines 11, 12, 13. All measures Mj are consequently initiated and ended simultaneously in all banks 1, 2, 3, so that it can be ensured that optimum conditions prevail for the operation of the exhaust gas cleaning system 60.
- FIG. 2 shows a course of the air conditions in the individual exhaust lines 11, 12, 13 downstream of the catalysts 21, 22, 23 in the case of NO ⁇ regeneration.
- T- j there is a need for regeneration for all three catalysts 21, 22, 23, and the composition of the exhaust gas is changed in accordance with a rich target specification.
- the lambda value downstream of the catalysts 21, 22, 23 initially remains at a stoichiometric value.
- Banks 1 and 3 would already have a pulse ending the regeneration at times T2 and T3, namely after reaching a rich threshold value SWf, but instead of going straight back to normal operation, banks 1 and 3 remain in stoichiometric operation, even in Bank 2 the regeneration is completed at time T4.
- FIG. 3 shows, inter alia, a time window of a weighted mode G.
- the characters in the lower three rows which have not been filled in again show the self-sufficient mode A for clarification, while the characters in the upper row which are filled in characterize the times at which the measure Mj in each of banks 1, 2, 3 is taken.
- the catalytic converter state K and / or the pollutant emission in each exhaust line 11, 12, 13 is recorded and multiplied by a weighting factor F w .
- the weighted quantities are then averaged (mean value MW), the mean value MW then being used for synchronous control of all banks 1, 2, 3. It then corresponds to the characteristic values KW j D and KWj e of FIG. 6.
- the weighting factor F w can only take into account a ratio of the number of cylinders 50 in the individual banks 1, 2, 3 to one another, so that in this case it would be one third each.
- FIG. 4 shows the profiles of NO x emissions in the exhaust gas lines 11, 12, 13 downstream of the catalysts 21, 22, 23 (curves 76, 78, 80) and an average profile according to the weighted mode G (curve 82) .
- NO x regeneration measures would already be initiated at points T5 and T5 if a threshold value SWR N ⁇ D for the NO ⁇ regeneration in the respective bank was exceeded. If the NO x emissions are averaged as described, the regeneration is initiated from a time T7, even if NO x storage capacity is still present in one of the banks.
- FIG. 5 shows a time window for dominant mode D.
- the catalytic converter state K and / or the pollutant emission EM is only detected in one of the exhaust gas lines 11, 12 or 13 and is used for synchronous control of all banks 1, 2, 3.
- Bank 1 has been given such a dominant position as an example. Such a measure can always be taken if, due to an operational situation or due to permanent structural changes, the pollutant emissions of Bank 1 far exceed those of the other banks.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10003903 | 2000-01-29 | ||
DE2000103903 DE10003903B4 (de) | 2000-01-29 | 2000-01-29 | Vorrichtung und Verfahren zur Steuerung eines Betriebes eines Mehrzylindermotors für Kraftfahrzeuge mit einer mehrflutigen Abgasreinigungsanlage |
PCT/EP2001/000542 WO2001055574A2 (de) | 2000-01-29 | 2001-01-18 | Vorrichtung und verfahren zur steuerung eines betriebes eines mehrzylindermotors für kraftfahrzeuge mit einer mehrflutigen abgasreinigungsanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1255922A2 true EP1255922A2 (de) | 2002-11-13 |
EP1255922B1 EP1255922B1 (de) | 2010-10-06 |
Family
ID=7629171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01902335A Expired - Lifetime EP1255922B1 (de) | 2000-01-29 | 2001-01-18 | Vorrichtung und verfahren zur steuerung eines betriebes eines mehrzylindermotors für kraftfahrzeuge mit einer mehrflutigen abgasreinigungsanlage |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1255922B1 (de) |
AU (1) | AU2001230194A1 (de) |
DE (2) | DE10003903B4 (de) |
WO (1) | WO2001055574A2 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1481154A1 (de) | 2002-03-07 | 2004-12-01 | Honeywell International Inc. | System zur verbesserten regeneration eines abgasnachbehandlungssystems |
DE10260886B4 (de) * | 2002-10-21 | 2012-10-11 | Volkswagen Ag | Verfahren zur Durchführung einer NOx-Regeneration sowie Mehrzylindermotor mit mehrflutiger Abgasreinigungsanlage |
FR2846036B1 (fr) * | 2002-10-21 | 2009-03-06 | Volkswagen Ag | PROCEDE D'EXECUTION DE REGENERATION DES NOx AINSI QUE MOTEUR A PLUSIEURS CYLINDRES AVEC DISPOSITIF D'EPURATION DES GAZ D'ECHAPPEMENT A PLUSIEURS FLUX |
US6882928B2 (en) * | 2003-04-08 | 2005-04-19 | General Motors Corporation | Enhanced diagnosis of a multi-banked catalyst exhaust system |
DE10347446B4 (de) * | 2003-10-13 | 2010-01-07 | Audi Ag | Verfahren zur Aufheizung und zur Desulfatisierung eines Hauptkatalysators einer mehrflutigen Abgaslage einer mehrzylindrigen Brennkraftmaschine eines Fahrzeugs, insbesondere eines Kraftfahrzeugs |
DE10349855B4 (de) * | 2003-10-22 | 2013-09-05 | Volkswagen Ag | Verfahren und Vorrichtung zur Entschwefelung eines Katalysators |
FR2976973B1 (fr) * | 2011-06-22 | 2016-02-05 | Delphi Automotive Systems Lux | Methode de controle d’un moteur a combustion interne |
CN106909801A (zh) * | 2017-04-17 | 2017-06-30 | 中国神华能源股份有限公司 | 计算气态污染物的有效小时均值的方法及系统 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3740238A1 (de) * | 1986-12-04 | 1988-06-23 | Audi Ag | Abgasanlage fuer eine brennkraftmaschine mit zwei zylinderbaenken |
DE3717141A1 (de) * | 1987-05-21 | 1988-12-15 | Webasto Ag Fahrzeugtechnik | Abgasanlage fuer mehrzylinder-dieselbrennkraftmaschinen |
DE3721810A1 (de) * | 1987-07-02 | 1989-01-12 | Audi Ag | Abgasanlage fuer eine brennkraftmaschine mit zwei zylinderbaenken |
DE3821357A1 (de) * | 1988-06-24 | 1990-02-15 | Bosch Gmbh Robert | Verfahren und vorrichtung zur lambdaregelung mit mehreren sonden |
DE4334557A1 (de) * | 1993-10-11 | 1995-04-13 | Bayerische Motoren Werke Ag | Vorrichtung zur Leerlaufregelung einer Kraftfahrzeug-Brennkraftmaschine |
JPH07224703A (ja) * | 1994-02-09 | 1995-08-22 | Fuji Heavy Ind Ltd | 空燃比制御方法 |
DE19503852C2 (de) * | 1994-02-09 | 2000-01-27 | Fuji Heavy Ind Ltd | Kraftstoff-Luftverhältnis-Regeleinrichtung und Verfahren zum Regeln des Kraftstoff-Luftverhältnisses eines Motors |
DE4444098A1 (de) * | 1994-12-10 | 1996-06-13 | Opel Adam Ag | Brennkraftmaschine mit zwei Zylinderbänken |
EP0861972B1 (de) * | 1995-11-17 | 2006-08-09 | Toyota Jidosha Kabushiki Kaisha | Abgasemissionsregelungsvorrichtung für brennkraftmaschinen |
-
2000
- 2000-01-29 DE DE2000103903 patent/DE10003903B4/de not_active Withdrawn - After Issue
-
2001
- 2001-01-18 WO PCT/EP2001/000542 patent/WO2001055574A2/de active Application Filing
- 2001-01-18 AU AU2001230194A patent/AU2001230194A1/en not_active Abandoned
- 2001-01-18 DE DE50115654T patent/DE50115654D1/de not_active Expired - Lifetime
- 2001-01-18 EP EP01902335A patent/EP1255922B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0155574A2 * |
Also Published As
Publication number | Publication date |
---|---|
EP1255922B1 (de) | 2010-10-06 |
WO2001055574A3 (de) | 2002-01-17 |
AU2001230194A1 (en) | 2001-08-07 |
DE10003903B4 (de) | 2009-12-17 |
DE10003903A1 (de) | 2001-08-02 |
WO2001055574A2 (de) | 2001-08-02 |
DE50115654D1 (de) | 2010-11-18 |
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