EP2142784A2 - Lambda-regelung mit einer kennlinienadaption - Google Patents
Lambda-regelung mit einer kennlinienadaptionInfo
- Publication number
- EP2142784A2 EP2142784A2 EP08734800A EP08734800A EP2142784A2 EP 2142784 A2 EP2142784 A2 EP 2142784A2 EP 08734800 A EP08734800 A EP 08734800A EP 08734800 A EP08734800 A EP 08734800A EP 2142784 A2 EP2142784 A2 EP 2142784A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- probe
- internal combustion
- combustion engine
- following step
- mixture
- 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
- 230000006978 adaptation Effects 0.000 title claims description 20
- 239000000523 sample Substances 0.000 claims abstract description 96
- 239000000203 mixture Substances 0.000 claims abstract description 60
- 238000002485 combustion reaction Methods 0.000 claims abstract description 41
- 238000000034 method Methods 0.000 claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 17
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 239000000446 fuel Substances 0.000 claims description 22
- 238000009423 ventilation Methods 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 description 11
- 230000000875 corresponding effect Effects 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2454—Learning of the air-fuel ratio control
- F02D41/2458—Learning of the air-fuel ratio control with an additional dither signal
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D41/1408—Dithering techniques
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
- F02D41/1456—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio with sensor output signal being linear or quasi-linear with the concentration of oxygen
-
- 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
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D41/1402—Adaptive control
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
- F02D41/2474—Characteristics of sensors
Definitions
- the invention relates to a method for ⁇ control in an internal combustion engine with an engine control for mixture formation and arranged in an exhaust system of the internal combustion engine ⁇ -probe for generating an oxygen content of a guided in the exhaust system exhaust gas by means of a stored characteristic characterizing probe signal.
- Procedures for ⁇ control in internal combustion engines can be used to reduce the emissions of harmful gases into the environment.
- at least one catalyst can be arranged in the exhaust system of the internal combustion engine.
- a ⁇ probe can be arranged in the exhaust system of the internal combustion engine.
- a probe signal of the ⁇ probe can be assigned to an associated ⁇ value by means of a characteristic curve.
- a ⁇ deviation downstream of the catalytic converter by means of a ⁇ signal, which is included in the front ⁇ control as an offset or temporal impact on a period duration.
- a ⁇ signal which is included in the front ⁇ control as an offset or temporal impact on a period duration.
- DE 38 37 984 A1 it is known from DE 38 37 984 A1 to compare the signal of a probe arranged behind the catalyst with a desired value and to influence the desired value of the front ⁇ control as a function of the comparison result.
- DE 43 20 881 A1 shows a combination of a ⁇ probe with a jump-shaped or binary probe characteristic with a further ⁇ probe, both probes being arranged in the immediate vicinity of one another.
- the object of the invention is to provide an improved ⁇ control in an internal combustion engine, in particular with an improved evaluation of a probe signal of a ⁇ probe. According to the invention the object is achieved with the features of the independent claims.
- the object is in a method for ⁇ -control in an internal combustion engine with an engine control for mixture formation and arranged in an exhaust system of the combustion engine ⁇ -probe for generating an oxygen content of a guided in the exhaust system exhaust gas by means of a stored characteristic characterizing probe signal, by the following steps solved: Pre-control of mixture changes of the internal combustion engine by means of the engine control and adapting the stored characteristic of the ⁇ -probe using the pilot-controlled mixture changes.
- a high level of effectiveness of exhaust gas cleaning measures is necessary. This can serve as accurate as possible adjustment of the exhaust gas composition of the internal combustion engine, wherein a catalyst located in the exhaust system can work as effectively as possible.
- the catalyst for example, a three-way catalyst
- this can be acted upon with exhaust gas, which alternately by means of the mixture changes a slight excess of fuel (fat) or a slight oxygen excess (lean).
- Such mixture changes are also referred to as ⁇ modulation.
- the pilot-controlled, ie known mixture changes for adapting the stored characteristic of the ⁇ -probe can be used.
- the ⁇ -probe may, for example, be a jump ⁇ -probe, which operates on the Nemst principle.
- Such ⁇ probes generally have a very flat characteristic with lean or rich exhaust gas composition, which can be subject to tolerances, in particular in the case of aging of the probe.
- the known - since pilot-controlled - mixture changes can be used to adapt the characteristic of such a jump ⁇ -probe, this despite possible existing tolerances and / or aging phenomena, the determination of a more accurate ⁇ -value, especially at lean and / or fat Exhaust gas composition allows.
- a pilot-controlled mixture change or ⁇ -Modulati ⁇ n deterioration of the conversion performance of the catalyst due to tolerances and / or errors of the characteristic can be avoided.
- a long-term stable good conversion performance of the catalyst can be achieved despite the use of relatively inexpensive jump ⁇ probes.
- An embodiment of the method comprises the following step: pre-controlling the mixture changes as ⁇ -modulation.
- the changes in the mixture may be an increase and reduction of the fuel quantity which is already customary for ⁇ regulations trade, for example by +/- 2%.
- the adaptation of the stored characteristic during normal operation of the internal combustion engine can be made.
- a special, different from the usual control of the mixture changes pilot control is not necessary.
- Another embodiment of the method comprises the following step: correlating a signal change of the ⁇ -probe with the pilot-controlled mixture changes.
- the exhaust system in particular due to the duration of the exhaust gas and mixing effects, acts as a delay element, so that the pilot-controlled mixture changes cause time-shifted corresponding signal changes of the / I probe.
- this time delay can be estimated by correlating the course of the signal changes of the ⁇ -probe and / or additionally by knowing the dimensioning of the exhaust system and the exhaust gas mass flow guided therein.
- a further embodiment of the method comprises the following step: relating to a maximum difference of a fuel quantity precontrolled in the pilot control of the mixture changes to a resulting maximum signal change of the ⁇ -probe.
- the delay time or transit time of the exhaust gas can thereby be determined, wherein advantageously a signal value corresponding to a specific fuel quantity can be determined.
- Another embodiment of the method comprises the following step: changing the amount of fuel based on a stoichiometric mixture composition.
- the change in the amount of fuel for example, +/- 2%, for example via a piloted ramp occur.
- a further embodiment of the method comprises the following step: Determining an extreme value of the probe signal temporally following the change of the fuel quantity.
- a time stamp can be set.
- a further embodiment of the method comprises the following step: Determining a value pair of the extreme value of the probe signal to an extreme value of the fuel quantity which precedes this time. At the previous extreme value of the amount of fuel, a time signal can also be set, resulting in the delay time from the time difference.
- a value pair of the characteristic of the used ⁇ -probe can be determined by the respective determination of the extreme value of the pilot fuel quantity and the probe signal.
- Another embodiment of the method comprises the following step: adapting the characteristic to the value pair.
- it can be checked whether the determined value pair is element of the stored characteristic curve. If this is not the case, ie the characteristic curve for the probe signal associated with the value pair would result in a deviating ⁇ value, the characteristic curve can advantageously be adapted in such a way that the precalculated ⁇ value lies on the characteristic curve.
- the adaptation of the characteristic can be done in various ways, for example by a parallel shift of the characteristic, by shifting certain parts of the characteristic, for example in a rich and / or lean area and / or by replacing the characteristic or at least a portion of the characteristic previously known, for example by long-term measurements determined characteristics of aged ⁇ probes.
- Another embodiment of the method comprises the following step: determining the value pair in the case of a rich mixture composition.
- an area of the characteristic curve for measured values ⁇ ⁇ 1 can thus be adapted particularly well.
- a further embodiment of the method comprises the following step: adapting the stored characteristic after the occurrence of a release condition, in particular at least one of the following release conditions:
- the internal combustion engine is at an approximately constant speed / load point, a mixture adaptation of the internal combustion engine is settled, the ⁇ control is settled, a tank ventilation of the internal combustion engine is deactivated and / or an engine temperature of the internal combustion engine is in a predetermined range.
- the object is also achieved by carrying out the method described above in the normal driving operation of the motor vehicle or in a diagnostic operation.
- the object is finally with a motor vehicle with an internal combustion engine with a motor control, designed and / or set up to carry out a method as described above.
- Figure 1 is a schematic representation of a ⁇ control for a motor vehicle
- Figure 2 is a characteristic of a broadband / 1 probe
- FIG. 3 shows a characteristic of a jump ⁇ probe with a value pair for adapting the characteristic
- the internal combustion engine 1 shows a block diagram of a method for ⁇ control in an internal combustion engine 1.
- the internal combustion engine 1 not shown, has an engine control unit 5 indicated by dashed lines for / in a front control circuit 2 and a rear control circuit 3.
- the engine control unit 5 points next to Other components, not shown, an adaptation device 6, a front controller 7 of the front loop 2 and a rear controller 9 of the rear loop 3.
- the front controller 7 of the engine control unit 5 controls the mixture formation of the internal combustion engine 1.
- the internal combustion engine 1 discharges its exhaust gas into a Exhaust system 11 having a catalytic converter 13 with a first ⁇ probe 15 and a second ⁇ probe 17.
- the first ⁇ probe 15 is connected upstream of the catalytic converter 13 in the exhaust path of the exhaust system 11.
- the second ⁇ probe 17 is in the exhaust path of the exhaust system 11 downstream of the catalyst 13.
- the first ⁇ probe 15 supplies a probe signal 19, the is supplied to the front controller 7 after subtraction of a set value 21.
- the second ⁇ -probe 17 supplies a rear probe signal 23, which is fed to the rear controller 9.
- the rear controller 9 generates from this a control signal 25, which is additionally added to the setpoint 21. Consequently, the rear controller 9 causes a change in the setpoint value 21 before it is subtracted from the probe signal 19.
- the first ⁇ probe 15 may, for example, be a jump ⁇ probe according to the Nemst principle.
- the applied control method of the front control loop 2 may be designed, for example, as a two-point control method, wherein mixture changes are precontrolled as ⁇ modulation. For this purpose, for example, the amount of fuel can be increased or decreased alternately by +/- 2%.
- the second ⁇ probe 17 may be, for example, a broadband ⁇ probe.
- FIG. 2 shows a characteristic 27 of a jump ⁇ probe. Characteristics of broadband ⁇ probes provide a comparatively good signal resolution even at ⁇ not equal to 1.
- an x-axis 29 symbolizes a ⁇ -value and a y-axis 31 an associated signal value of a probe signal of the broadband ⁇ -probe.
- a ⁇ 1 point 33 located.
- FIG. 3 shows a characteristic curve 35 of a jump ⁇ probe with a value pair 37 for adapting the characteristic curve 35.
- the size ⁇ is shown on an x-axis 36 and a probe signal or a variable characterizing the probe signal, for example one, on a y-axis 38 Tension, applied.
- the value pair 37 corresponds to a ⁇ value of 0.98 and the associated probe signal.
- the probe signal may be, for example, the front probe signal 19 of the first ⁇ probe 15.
- the characteristic curve 35 is located within a region 39.
- the region 39 extends in the rich mixture-forming region, that is to say for probe signals which correspond to a ⁇ ⁇ 1.
- the range 39 represents in FIG. 3 exemplary possible adaptations of the characteristic curve 35.
- the characteristic 35 within the range 39 can be adapted or selected within the range 39 such that the characteristic 35 passes through the value pair 37, ie the value pair 37 element of FIG Characteristic 35 is.
- FIG. 4 shows a diagram of a first time profile 41 of a pilot-controlled mixture change in comparison to a corresponding second time profile of a resulting probe signal, for example the front probe signal 29.
- the ramps 45 always start in a rising or falling direction from a stoichiometric mixture formation in order to jump back to the jumps 47 for stoichiometric mixture formation.
- a time is set at a point in time which is identified by ti in FIG. 4 and corresponds to an extreme value 49 of the first time profile 41 of the pilot-controlled mixture formation.
- the extreme value 49 corresponds in the present example to a ⁇ value of 0.98.
- an extreme value 51 of the second time profile 43 of the front probe signal 19 is determined. From the time difference between the with ti marked time and a time marked with t 2 , which corresponds to the extreme value 51, a delay time, which is indicated in Figure 4 with t v , can be determined.
- a pair of values results, namely from the extreme values 49 and 51.
- a value of the front probe signal 19 at the time of the extreme value 51 can be assigned to the pilot-controlled ⁇ value of 0.98 become.
- This pair of values determined for example by means of the adaptation device 6 of the motor control 5 can advantageously be determined for the adaptation of the characteristic curve 35 shown in FIG. 3, for example likewise in the adaptation device 6.
- the characteristic curve 35 can be stored in the motor control 5.
- the characteristic 35 currently stored at the time of determining the value pair 37 can be checked to see whether the determined value pair 37 is element of the characteristic 35. If this is not the case at the time the value pair 37 is determined, a new characteristic curve can be determined and stored by the adaptation device 6, which is adapted such that the value pair 37 is again element of the characteristic curve 35.
- the characteristic curve 35 in the rich region can be adjusted by this checking and adaptation such that, despite possible temporal changes and / or tolerances, it also assigns a comparatively precise ⁇ value to the measured front probe signal 19 in the region of a rich mixture formation.
- the characteristic curve 35 of the first ⁇ probe 15, which may be designed as a Nernst probe, is adapted with the aid of the known mixture changes of the internal combustion engine 1.
- the mixture changes are also referred to as ⁇ modulation, wherein the amount of fuel is increased or decreased by, for example, +/- 2%.
- ⁇ modulation wherein the amount of fuel is increased or decreased by, for example, +/- 2%.
- the front probe signal 19 reacts to this mixture change.
- the signal change of the first ⁇ -probe 15 can be correlated with the pilot fuel quantity.
- the maximum difference of the pilot fuel quantity which corresponds to the first time course 41 in FIG. 4, is related to the subsequently resulting maximum front probe signal 19 of the first ⁇ probe 15.
- the embodiment shown in FIG shown extreme value 51 serve.
- the engine control 5 of the internal combustion engine 1 increases the mixture composition to a maximum value of + 2% starting from a stoichiometric mixture composition along the ramp 45 by adding an additional amount of fuel. Subsequently, this factor is reduced again along the jump 47 of the first time course 41. This increase by 2% corresponds to a minimum value of a mixture ⁇ of 0.98, for example at time ti, as shown in FIG.
- the release of this adaptation can be made dependent on different release conditions.
- the adaptation can, for example, only be started when the internal combustion engine 1 is operated at an approximately constant speed / load point, a mixture adaptation of the internal combustion engine 1 has settled, the ⁇ control has settled, a tank ventilation of the internal combustion engine is deactivated and / or an engine temperature of the internal combustion engine is within a predetermined range.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007016276A DE102007016276A1 (de) | 2007-04-04 | 2007-04-04 | Lambda-Regelung mit einer Kennlinienadaption |
| PCT/EP2008/002407 WO2008122369A2 (de) | 2007-04-04 | 2008-03-27 | Lambda-regelung mit einer kennlinienadaption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2142784A2 true EP2142784A2 (de) | 2010-01-13 |
| EP2142784B1 EP2142784B1 (de) | 2016-03-16 |
Family
ID=39736164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08734800.9A Not-in-force EP2142784B1 (de) | 2007-04-04 | 2008-03-27 | Lambda-regelung mit einer kennlinienadaption |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2142784B1 (de) |
| DE (1) | DE102007016276A1 (de) |
| WO (1) | WO2008122369A2 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105593495A (zh) * | 2013-10-04 | 2016-05-18 | 大陆汽车有限公司 | 用于运行内燃发动机的装置 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007038478A1 (de) | 2007-08-14 | 2009-02-19 | Volkswagen Ag | Verfahren zur λ-Regelung in Betriebsbereichen mit Kraftstoff-Mangel oder Kraftstoff-Überschuss bei einer Nernst-Sonde |
| DE102012208092B4 (de) * | 2012-05-15 | 2022-02-24 | Robert Bosch Gmbh | Verfahren und Steuereinheit zur Kompensation eines Spannungsoffsets einer Zweipunkt-Lambdasonde |
| DE102012211687B4 (de) * | 2012-07-05 | 2024-03-21 | Robert Bosch Gmbh | Verfahren und Steuereinheit zur Erkennung eines Spannungsoffsets einer Spannungs-Lambda-Kennlinie |
| DE102014200042A1 (de) | 2014-01-07 | 2015-07-09 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Regelung einer Gemischzusammensetzung mit einer Lambda-Sprungsonde |
| DE102024114198A1 (de) * | 2024-05-21 | 2025-11-27 | Audi Aktiengesellschaft | Verfahren zum Betreiben einer Antriebseinrichtung für ein Kraftfahrzeug, entsprechende Antriebseinrichtung sowie Computerprogrammprodukt |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4502444A (en) * | 1983-07-19 | 1985-03-05 | Engelhard Corporation | Air-fuel ratio controller |
| DE3336894A1 (de) * | 1983-10-11 | 1985-04-25 | Robert Bosch Gmbh, 7000 Stuttgart | Verfahren zur lambda-regelung bei einer brennkraftmaschine |
| DE3827978A1 (de) | 1987-11-10 | 1989-05-18 | Bosch Gmbh Robert | Verfahren und vorrichtung fuer stetige lambdaregelung |
| DE4320881A1 (de) | 1993-02-26 | 1994-09-01 | Roth Forschung Gmbh & Co Autom | Kombination von Lambda-Sonden |
| US5392599A (en) * | 1994-01-10 | 1995-02-28 | Ford Motor Company | Engine air/fuel control with adaptive correction of ego sensor output |
| DE4420946B4 (de) * | 1994-06-16 | 2007-09-20 | Robert Bosch Gmbh | Steuersystem für die Kraftstoffzumessung bei einer Brennkraftmaschine |
| US5551410A (en) * | 1995-07-26 | 1996-09-03 | Ford Motor Company | Engine controller with adaptive fuel compensation |
| JPH09196889A (ja) * | 1996-01-16 | 1997-07-31 | Toyota Motor Corp | 空燃比検出装置 |
| US5778866A (en) * | 1996-01-25 | 1998-07-14 | Unisia Jecs Corporation | Air-fuel ratio detecting system of internal combustion engine |
| DE19842425C2 (de) * | 1998-09-16 | 2003-10-02 | Siemens Ag | Verfahren zur Korrektur der Kennlinie einer linearen Lambda-Sonde |
| DE19844994C2 (de) * | 1998-09-30 | 2002-01-17 | Siemens Ag | Verfahren zur Diagnose einer stetigen Lambdasonde |
| DE19856367C1 (de) * | 1998-12-07 | 2000-06-21 | Siemens Ag | Verfahren zur Reinigung des Abgases mit Lambda-Regelung |
| DE10016886A1 (de) * | 2000-04-05 | 2001-10-18 | Volkswagen Ag | Verfahren und Vorrichtung zur Regelung einer Verbrennungskraftmaschine |
| DE102006017863B3 (de) * | 2006-04-18 | 2007-03-22 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren zum Einstellen des Luft-/Kraftstoffverhältnisses eines Verbrennungsmotors |
-
2007
- 2007-04-04 DE DE102007016276A patent/DE102007016276A1/de not_active Withdrawn
-
2008
- 2008-03-27 WO PCT/EP2008/002407 patent/WO2008122369A2/de not_active Ceased
- 2008-03-27 EP EP08734800.9A patent/EP2142784B1/de not_active Not-in-force
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2008122369A2 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105593495A (zh) * | 2013-10-04 | 2016-05-18 | 大陆汽车有限公司 | 用于运行内燃发动机的装置 |
| CN105593495B (zh) * | 2013-10-04 | 2019-02-05 | 大陆汽车有限公司 | 用于运行内燃发动机的装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008122369A2 (de) | 2008-10-16 |
| EP2142784B1 (de) | 2016-03-16 |
| WO2008122369A3 (de) | 2008-11-27 |
| DE102007016276A1 (de) | 2008-10-09 |
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