WO2009021847A1 - Verfahren und vorrichtung zum betreiben einer brennkraftmaschine eines kraftfahrzeugs - Google Patents
Verfahren und vorrichtung zum betreiben einer brennkraftmaschine eines kraftfahrzeugs Download PDFInfo
- Publication number
- WO2009021847A1 WO2009021847A1 PCT/EP2008/060008 EP2008060008W WO2009021847A1 WO 2009021847 A1 WO2009021847 A1 WO 2009021847A1 EP 2008060008 W EP2008060008 W EP 2008060008W WO 2009021847 A1 WO2009021847 A1 WO 2009021847A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- determined
- internal combustion
- combustion engine
- exhaust gas
- catalytic converter
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- 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
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/007—Storing data relevant to operation of exhaust systems for later retrieval and analysis, e.g. to research exhaust system malfunctions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the invention relates to a method and a device for operating an internal combustion engine of a motor vehicle.
- a course of at least one operating variable is recorded during several driving cycles of the motor vehicle, which is representative of a pollutant content of an exhaust gas of the internal combustion engine.
- an exhaust aftertreatment can be carried out with a reducing agent.
- the pollutant content includes, for example, a nitrogen oxide content of the exhaust gas.
- the reducing agent includes, for example, an aqueous urea solution and / or a complex salt.
- the exhaust aftertreatment is at least partially carried out in an exhaust gas catalyst, in particular an S_elective- ⁇ catalytic reduction catalyst (SCR catalyst).
- SCR catalyst S_elective- ⁇ catalytic reduction catalyst
- the aqueous urea solution may also be referred to as urea.
- the aqueous urea solution is pumped by a liquid pump to a urea injection valve, which meters the urea solution upstream of the catalytic converter into an exhaust gas flow in an exhaust tract of the internal combustion engine.
- the urea solution reacts in the hot exhaust stream to ammonia and carbon dioxide.
- the complex salt releases gaseous ammonia depending on its temperature.
- the ammonia then reacts with the nitrogen oxide mixture of the exhaust gas to form nitrogen and water.
- the invention is characterized by a method and a device for operating an internal combustion engine of a motor vehicle.
- a course of at least one operating variable of the internal combustion engine is ever recorded.
- the operating variable is representative of a pollutant content of an exhaust gas of the internal combustion engine.
- the recorded progressions are analyzed with respect to repetitive patterns.
- a nominal value of an ammonia loading level of an exhaust gas catalytic converter of the internal combustion engine is determined using the repetitive course pattern.
- at least one actuating signal for an actuator is determined.
- a position of the actuator affects an actual Ammoniakbeladungsgrad the catalytic converter.
- the actuator is actuated depending on the determined actuating signal.
- the operating variable of the internal combustion engine includes, for example, a rotational speed, a torque, an exhaust gas temperature and / or a load of the internal combustion engine.
- the load of the internal combustion engine is, for example, by an air mass flow in the intake of the Internal combustion engine or characterized by an intake manifold pressure in a suction pipe of the intake tract of the internal combustion engine.
- the catalytic converter comprises, for example, an SCR catalyst.
- the repetitive progress patterns are taken into account only when determining the target value of the degree of ammonia loading, if a frequency with which the corresponding repetitive progress patterns respectively occur in the recorded progressions is greater than a predefined first threshold value. This may simply help to ensure that the ammonia loading level is not unnecessarily adjusted to an anticipated pollutant content of the exhaust gas.
- the nominal value of the degree of ammonia loading of the exhaust gas catalytic converter is determined by using the recurring course patterns by determining a current course of the operating variable. Using the repetitive history patterns and depending on the determined actual course of the operating quantity, a tendency is determined with which the pollutant content of the exhaust gas is likely to change. Depending on the determined trend, the desired value of the degree of ammonia loading of the catalytic converter is determined and implemented. This makes it particularly easy to prepare the degree of loading of the catalytic converter in good time to the changing pollutant content of the exhaust gas. Furthermore, this makes use of the knowledge that a given driver of the motor vehicle basically always drives the same routes and also regularly has the same driving behavior.
- a driver is basically an aggressive or a defensive driver.
- the driving behavior of a driver who is mainly traveling in the city basically differs from the driving behavior of a commuter.
- Another different driving behavior has for example, a representative who is mainly traveling on highways, for example.
- Particularly advantageous is the anticipatory loading of the catalytic converter with ammonia for motor vehicles whose journeys are always identical, for example, in regular buses.
- the target value of the degree of ammonia loading of the exhaust gas catalyst is determined and implemented so that after the implementation of the target value of the ammonia loading of the exhaust gas catalyst of the exhaust gas catalyst is loaded with ammonia, that the nitrogen oxides are likely to be converted into the exhaust gas with the ammonia.
- the tendency is evaluated with a probability value.
- the probability value is representative of the probability with which a current course of the pollutant content of the exhaust gas will follow the determined tendency.
- the desired value of the degree of ammonia loading of the exhaust gas catalytic converter is determined as a function of the determined tendency only if the probability value is greater than a predetermined second threshold value. This simply adds to the fact that the degree of ammonia loading is not unnecessarily adjusted to a given ammonia loading level.
- 1 shows an internal combustion engine
- 2 shows an exhaust gas aftertreatment system of the internal combustion engine
- FIG. 4 shows a flowchart of a second program for operating the internal combustion engine.
- An internal combustion engine 14 (FIG. 1) comprises an intake tract 1, an engine block 2, a cylinder head 3 and an exhaust tract 4.
- the intake tract 1 preferably comprises a throttle valve 5, a collector 6 and a suction pipe 7 which leads to a cylinder Z1-Z4 an inlet channel is guided in a combustion chamber 9 of the engine block 2.
- the combustion space 9 communicates with the intake tract 1 or with the exhaust tract 4.
- the engine block 2 comprises a crankshaft 8 which is coupled via a connecting rod 10 to a piston 11 of the cylinder Z1-Z4 ,
- the internal combustion engine 14 preferably comprises further cylinders Z1-Z4.
- the internal combustion engine 14 is preferably arranged in a motor vehicle.
- a fuel injection valve 18 is preferably arranged in the cylinder head 3. If the internal combustion engine 14 is not a diesel internal combustion engine, preferably each cylinder Z1-Z4 is assigned a spark plug. Alternatively, the fuel injection valve 18 may also be arranged in the intake manifold 7.
- the exhaust tract 4 is preferably assigned an exhaust aftertreatment system (FIG. 2).
- the exhaust aftertreatment system includes, for example, an SCR system.
- the treatment system includes a reductant tank for receiving a reductant, a reductant metering valve, and preferably a reductant pump for supplying the reductant metering valve with reductant from the reductant tank.
- the reductant tank preferably comprises a urea tank 40.
- the reductant metering valve preferably comprises a urea injection valve 54.
- the reductant pump preferably comprises a pump 42.
- the reductant preferably comprises urea.
- the reducing agent may comprise a complex salt.
- the urea may be passed from the urea tank 40 via a urea line 41 by means of the pump 42 to the urea injection valve 54.
- the metering of the urea into the exhaust tract 4 may be controlled additionally or alternatively to the urea injection valve 54 via a urea valve 52 on the urea line 41.
- a soot particle filter 21 is preferably arranged upstream of the urea injection valve 54. Downstream of the urea injection valve 54 is preferably arranged a mixing device 56 for mixing the metered urea, in particular ammonia, with exhaust gas in the exhaust tract 4. Further, downstream of the mixing device 56, an exhaust gas catalyst 23 is arranged downstream of the mixing device 56. In addition to the catalytic converter 23, a hydrolysis catalytic converter may be provided upstream of the catalytic converter 23 and downstream of the mixing device 56, and an oxidation catalytic converter may be provided downstream of the catalytic converter 23.
- the exhaust gas catalyst preferably comprises an SCR catalyst.
- the urea injection valve 54 is preferably the urea metered from the exhaust tract 4, from which emerges in a chemical reaction of the ammonia.
- the urea in particular the ammonia, mixes mainly in the mixing device 56 with the exhaust gas of the internal combustion engine 14.
- the urea may also be referred to as an aqueous urea solution.
- a control device 25 is provided, which is associated with sensors which detect different measured variables and in each case determine the value of the measured variable.
- the control device 25 determines, depending on at least one of the measured variables, at least one manipulated variable, which are then converted into one or more actuating signals for controlling the actuators by means of corresponding actuators.
- the control device 25 can also be referred to as a device for operating the internal combustion engine 14.
- the sensors are, for example, a pedal position sensor 26 that detects an accelerator pedal position of an accelerator pedal 27, an air mass sensor 28 that detects an air mass flow upstream of the throttle 5, a temperature sensor 32 that detects an intake air temperature, an intake manifold pressure sensor 34 that detects an intake manifold pressure in the accumulator 6 , a crankshaft angle sensor 36 which detects a crankshaft angle to which a rotational speed of the engine 14 can then be assigned, a reducing agent temperature sensor, in particular a urea temperature sensor 43 for detecting a urea temperature of the urea in the urea tank 40.
- an exhaust gas probe 38 is provided, for example is arranged downstream of the catalytic converter 23 and, for example, the pollutant content, in particular an embroidery oxide content and / or a urea content of the exhaust gas detected.
- any subset of said sensors may be present, or additional sensors may be present.
- the actuators are, for example, the throttle valve 5, the gas inlet and outlet valves 12, 13, the fuel injection valve 18, the urea injection valve 54, the urea valve 52, the pump 42 and / or optionally the spark plug.
- a first program for operating the internal combustion engine 14 is preferably stored on a storage medium of the control device 25 (FIG. 3).
- the first program is used to record a course of at least one of the operating variables that are representative of the pollutant content of the exhaust gas of the internal combustion engine 14. Furthermore, the first program is used to search in the recorded progressions of the operating size for repetitive patterns RUN PAT and record if necessary. In other words, the first program is used to analyze the course of the operating variable with respect to the recurring pattern RUN_PAT.
- the first program is preferably started in a timely manner an engine start of the internal combustion engine in a step Sl, in which variables are initialized if necessary.
- a value of the operating variable of the internal combustion engine is determined. For example, an actual value LOAD AV of a load or load variable of the internal combustion engine is determined, and a value N_AV of the rotational speed of the internal combustion engine is determined.
- the intake manifold pressure and / or a combustion temperature a combustion process of the internal combustion engine can be used as an operating variable.
- a course of the operating variable is stored by means of a storage instruction SAVE.
- a curve LOAD_RUN of the load variable and / or a course N RUN of the rotational speed of the internal combustion engine are stored in step S3.
- a step S5 it is checked whether at least one, preferably a plurality of repetitive progress patterns RUN PAT occur in the recorded progressions.
- a given algorithm for example, the courses in terms of occurring and recurring gradients can be examined.
- the steps S4 and S5 can also be executed in one step.
- a step S6 it is preferable to determine a number PAT AM with which at least one of the history patterns RUN_PAT occurs in the recorded progressions of the operating quantity. In particular, it is checked in step S6 whether the number PAT AM of the recurring pattern RUN PAT is greater than a predetermined threshold THD. If the condition of step S6 is satisfied, the processing is continued in a step S7. If the condition of step S6 is not satisfied, the processing is continued again in step S2.
- step S7 at least one of the determined course patterns RUN PAT is stored by means of the memory instruction SAVE.
- step S8 the first program for operating the internal combustion engine can be ended. Preferably, however, the first program is executed regularly during operation of the internal combustion engine.
- a second program for operating the internal combustion engine is stored on the storage medium of the control device 25 (FIG. 4).
- the second program for operating the internal combustion engine serves to record the operating variable and its course during a current driving cycle of the motor vehicle and to estimate an anticipated pollutant content of the exhaust gas using the recorded progressions of the operating variable and in particular the stored repetitive course patterns RUN PAT of the flows depending on a degree of ammonia loading of the catalytic converter 23 pretend so that preferably all nitrogen oxides contained in the exhaust gas may react with the ammonia and that no ammonia breakthrough of the catalytic converter 23 occurs.
- the second program is preferably started in a timely manner to the engine start of the internal combustion engine in a step S9, in which variables are initialized if necessary.
- the steps S10 to S12 of the second program are preferably executed in accordance with the steps S2 to S4 of the first program.
- a step S13 it is checked whether a current gradient pattern PAT_AV of the currently recorded operational variable at least approximately corresponds to an already recorded repetitive gradient pattern RUN_PAT. If the condition of step S13 is satisfied, the processing is continued in step S14. If the condition of step S13 is not satisfied, the processing is continued to a step S10.
- a trend TREND is determined which is representative of how the pollutant content of the exhaust gas is expected to change in a timely manner. Timely in this context preferably means exactly as long as the setting of a predetermined degree of loading of the catalytic converter with ammonia, so that sufficient ammonia is available for the changing pollutant content of the exhaust gas in the catalytic converter 23 for converting the nitrogen oxides. For example, it can be determined in step S14 that an increasing pollutant content of the exhaust gas is likely to be expected in one second.
- a desired value LD_SP of the degree of charge of the catalytic converter 23 is determined as a function of the determined trend TREND. For example, with the presumably increasing pollutant content of the exhaust gas, the degree of ammonia loading can be increased even before the pollutant content of the exhaust gas changes.
- an actuating signal SIG for an actuator can be determined.
- the control signal can be determined, for example, by means of a characteristic diagram or a model calculation, which can be recorded, for example, on an engine test bench.
- the actuator is one of the actuators whose position affects the actual degree of ammonia loading of the catalytic converter 23.
- the actuator is the urea injection valve 54 and / or the urea valve 52.
- a control CTL of the corresponding actuator for converting the target value LD_SP of the ammonia loading degree of the catalytic converter 23 takes place.
- the second program can be terminated, however, the second program is preferably executed regularly during the operation of the internal combustion engine.
- the first and / or the second program for operating the internal combustion engine 14 may be subdivided into further subroutines or implemented in a superordinate program.
- the two programs which are suitable for carrying out exhaust gas aftertreatment of internal combustion engine 14 in a particularly effective manner make use of the knowledge that the same drivers regularly drive with the same motor vehicle, each having individual driving behavior, and / or with the same motor vehicles regularly Routes are driven.
- the repeating pattern RUN_PAT may be representative of an aggressive driver.
- the aggressiveness of the driver is based on the driving style of the driver. If the aggressive driver is recognized using the recorded repetitive pattern RUN PAT of the operating variable, then more ammonia should be provided in the catalytic converter 23 at the start of the drive cycle, for example, since more nitrogen oxides are produced in aggressive driving behavior than defensive driving behavior.
- the aggressive driving behavior requires a higher temperature of the catalytic converter 23, resulting in a lower maximum load of the catalytic converter 23. Due to the lower maximum load of the catalytic converter 23, however, less ammonia can be stored, otherwise the ammonia breakthrough occurs, resulting in an unpleasant odor.
- the repetitive pattern RUN PAT of the operating variable have, for example, frequent load changes and high temperature jumps in the aggressive driver, for example in the combustion process.
- Aggressive drivers include drivers who constantly have a high torque requirement. This increases the Temperature of the catalytic converter 23 in addition, which can lead to the ammonia breakthrough, especially in an interim vehicle standstill, since cooling fails due to the wind at a standstill.
- the two programs for operating the internal combustion engine 14 are particularly well suited, if the motor vehicle is a regular bus.
- the bus line is the route that has to drive the bus, fixed.
- the regular service bus has, for example, to overcome a mountain over the same journey duration of its driving cycle, to drive on a highway and / or to stop at traffic lights or stops at frequent intervals.
- the ammonia loading level can be set differently in the morning at the beginning of the drive cycle as in the morning at the end of the drive cycle. Conversely, in the evening at the beginning of the driving cycle, the degree of ammonia loading can then be set to city traffic and switched to overland traffic after a predetermined period of time.
- the operating variable includes the accelerator pedal position of the accelerator pedal 27 of the internal combustion engine 14, then, for example, a kickdown or another increasing torque request of a driver of the motor vehicle can be detected.
- the degree of loading of the exhaust gas catalytic converter 23 can be increased in a forward-looking manner, so that the nitrogen oxides which are produced with increasing torque are preferably converted as effectively as possible.
- an end of the overrun phase can be detected after an overrun phase via the actuation of the accelerator pedal or an actuation of the clutch for engaging another gear.
- the measures mentioned above cause a reduction in the consumption of the urea solution and thus an increase in the range of the urea tank 40. Further, the risk of ammonia breakthrough of the exhaust catalyst 23 is reduced, whereby a barrier catalyst for ammonia destruction in the event of ammonia breakthrough can be saved. This lowers the system cost and avoids side reactions that can be caused by the trap catalyst. Furthermore, the nitrogen oxides can be implemented more effectively, since sufficient ammonia is always present in the exhaust gas catalyst 23 in good time.
- the anticipatory loading of the catalytic converter 23 can then be carried out at operating points in which the loading of the catalytic converter 23 is particularly favorable. This is especially true in operating conditions in which there prevail in the exhaust system 4 temperatures that are sufficiently high, so that the urea solution in the exhaust gas 4 can hydrolyze to ammonia.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/673,527 US20110264352A1 (en) | 2007-08-14 | 2008-07-30 | Method and device for operating an internal combustion engine of a motor vehicle |
KR1020107005292A KR101455601B1 (ko) | 2007-08-14 | 2008-07-30 | 자동차의 내연 기관 동작 방법 및 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007038411A DE102007038411B4 (de) | 2007-08-14 | 2007-08-14 | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine eines Kraftfahrzeugs |
DE102007038411.6 | 2007-08-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009021847A1 true WO2009021847A1 (de) | 2009-02-19 |
Family
ID=39865263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/060008 WO2009021847A1 (de) | 2007-08-14 | 2008-07-30 | Verfahren und vorrichtung zum betreiben einer brennkraftmaschine eines kraftfahrzeugs |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110264352A1 (de) |
KR (1) | KR101455601B1 (de) |
DE (1) | DE102007038411B4 (de) |
WO (1) | WO2009021847A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015218776B4 (de) | 2015-09-29 | 2022-06-09 | Mtu Friedrichshafen Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine, Steuergerät und Brennkraftmaschine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002038933A1 (de) * | 2000-11-11 | 2002-05-16 | Robert Bosch Gmbh | Verfahren und vorrichtung zur steuerung eines abgasnachbehandlungssystems |
DE102004005072A1 (de) * | 2004-02-02 | 2005-08-18 | Robert Bosch Gmbh | Verfahren zum Regenerieren einer Abgasnachbehandlungsanlage |
US20050274553A1 (en) * | 2004-06-09 | 2005-12-15 | Salman Mutasim A | Predictive energy management system for hybrid electric vehicles |
WO2007096064A1 (de) * | 2006-02-21 | 2007-08-30 | Fev Motorentechnik Gmbh | Direkteinspritzende, fremdgezündete verbrennungskraftmaschine mit scr-katalysator |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5367875A (en) * | 1992-12-07 | 1994-11-29 | Coltec Industries Inc | Automated catalytic reduction system |
WO1997016632A1 (fr) * | 1995-10-30 | 1997-05-09 | Toyota Jidosha Kabushiki Kaisha | Appareil de regulation des emissions de l'echappement pour un moteur a combustion interne |
US5809774A (en) * | 1996-11-19 | 1998-09-22 | Clean Diesel Technologies, Inc. | System for fueling and feeding chemicals to internal combustion engines for NOx reduction |
US5809775A (en) * | 1997-04-02 | 1998-09-22 | Clean Diesel Technologies, Inc. | Reducing NOx emissions from an engine by selective catalytic reduction utilizing solid reagents |
US5924280A (en) * | 1997-04-04 | 1999-07-20 | Clean Diesel Technologies, Inc. | Reducing NOx emissions from an engine while maximizing fuel economy |
DE10049659A1 (de) * | 2000-10-07 | 2002-04-11 | Daimler Chrysler Ag | Adaptives Regenerationmanagement für Abgasnachbehandlungsanlagen |
DE10158480C1 (de) * | 2001-11-28 | 2003-10-09 | Omg Ag & Co Kg | Verfahren und Vorrichtung zum Betreiben eines Motors eines Kraftfahrzeuges |
US6871489B2 (en) * | 2003-04-16 | 2005-03-29 | Arvin Technologies, Inc. | Thermal management of exhaust systems |
DE102006009935A1 (de) * | 2006-03-03 | 2007-09-06 | Daimlerchrysler Ag | Verfahren zum Betreiben eines Stickoxidreduktionskatalysators |
-
2007
- 2007-08-14 DE DE102007038411A patent/DE102007038411B4/de active Active
-
2008
- 2008-07-30 KR KR1020107005292A patent/KR101455601B1/ko active IP Right Grant
- 2008-07-30 US US12/673,527 patent/US20110264352A1/en not_active Abandoned
- 2008-07-30 WO PCT/EP2008/060008 patent/WO2009021847A1/de active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002038933A1 (de) * | 2000-11-11 | 2002-05-16 | Robert Bosch Gmbh | Verfahren und vorrichtung zur steuerung eines abgasnachbehandlungssystems |
DE102004005072A1 (de) * | 2004-02-02 | 2005-08-18 | Robert Bosch Gmbh | Verfahren zum Regenerieren einer Abgasnachbehandlungsanlage |
US20050274553A1 (en) * | 2004-06-09 | 2005-12-15 | Salman Mutasim A | Predictive energy management system for hybrid electric vehicles |
WO2007096064A1 (de) * | 2006-02-21 | 2007-08-30 | Fev Motorentechnik Gmbh | Direkteinspritzende, fremdgezündete verbrennungskraftmaschine mit scr-katalysator |
Also Published As
Publication number | Publication date |
---|---|
DE102007038411A1 (de) | 2009-02-26 |
DE102007038411B4 (de) | 2010-10-28 |
KR20100047893A (ko) | 2010-05-10 |
US20110264352A1 (en) | 2011-10-27 |
KR101455601B1 (ko) | 2014-10-28 |
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