EP1398486A2 - Verfahren zur Verbesserung der Genauigkeit eines Saugrohrmodells einer Brennkraftmaschine - Google Patents
Verfahren zur Verbesserung der Genauigkeit eines Saugrohrmodells einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP1398486A2 EP1398486A2 EP03020364A EP03020364A EP1398486A2 EP 1398486 A2 EP1398486 A2 EP 1398486A2 EP 03020364 A EP03020364 A EP 03020364A EP 03020364 A EP03020364 A EP 03020364A EP 1398486 A2 EP1398486 A2 EP 1398486A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lambda
- value
- filling
- lambda value
- intake manifold
- 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.)
- Withdrawn
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Classifications
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- 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
- F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
- F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry
-
- 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
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
- F02D41/182—Circuit arrangements for generating control signals by measuring intake air flow for the control of a fuel injection device
-
- 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
- F02D2041/1433—Introducing closed-loop corrections characterised by the control or regulation method using a model or simulation of the system
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D2041/389—Controlling fuel injection of the high pressure type for injecting directly into the cylinder
-
- 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
- F02D2200/04—Engine intake system parameters
- F02D2200/0402—Engine intake system parameters the parameter being determined by using a model of the engine intake or its components
-
- 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
- F02D2200/04—Engine intake system parameters
- F02D2200/0406—Intake manifold pressure
-
- 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
- F02D2200/04—Engine intake system parameters
- F02D2200/0411—Volumetric efficiency
-
- 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
Definitions
- the invention relates to a method for operating an internal combustion engine, wherein a predicted charge is calculated from an intake manifold pressure p s by means of an intake manifold model and transferred to a mixture control that determines a fuel mass to be injected into a combustion chamber of the internal combustion engine, and a lambda value is continuously generated by means of a lambda probe of an exhaust gas is determined according to the preamble of claim 1.
- a charge detection When operating an internal combustion engine, a charge detection has the task of determining the air mass in the combustion chamber as accurately and dynamically as possible, in order to provide a basis for the setting of manipulated variables. There is no direct measurement.
- An intake manifold model is provided for filling detection, which calculates a filling of cylinders or a combustion chamber of the internal combustion engine from an intake manifold pressure p s .
- the intake manifold model essentially comprises a set of formulas in the form of characteristic diagrams which establish an association between the intake manifold pressure p s and a filling of the cylinders.
- the present invention is therefore based on the object of a method of to improve the above-mentioned type with regard to the accuracy of the intake manifold model.
- a deviation of the lambda value from a lambda value expected for the injected fuel mass and the predicted filling is determined, that a difference between the predicted filling and a filling required to achieve the expected lambda value is determined and that parameters of the intake manifold model are changed in such a way that the intake manifold model for the input value of the suction pressure p s from which the predicted filling was previously calculated gives the previously determined required filling as an output.
- the expected value for the lambda value is that Ratio of the relative amount of air to the relative amount of fuel resulting from the Feedforward control is determined.
- the expected corresponds Value for the lambda value that lambda value which is from the lambda controller should be set.
- An internal combustion engine 10 with a combustion chamber 12 with fuel injection (not shown in detail) is indicated schematically in the single FIG.
- a predetermined fuel quantity or mass 14 is injected into the combustion chamber 12, the fuel quantity 14 being predetermined by a mixture control 16.
- the mixture control 16 receives as input values a lambda setpoint value 18 and a predicted filling 20.
- the filling 20 is determined by an intake manifold model 22, which comprises a parameter set in the form of characteristic maps, which assign an association between them an intake manifold pressure p s and the predicted filling 20.
- the parameters of the intake manifold model 22 are initially fixed statically.
- Exhaust gas 24 flows out of the combustion chamber 12 and a lambda probe 26 determines one Lambda value 28 of the exhaust gas 24.
- the intake manifold model 22 is an adaptation 30 assigned which includes the lambda value 28 and the injected fuel mass 14 receives.
- the adaptation 30 recognizes from the lambda value 28 whether the injected fuel is completely burned or whether the mixture is fat or lean. In controlled operation Without an active lambda controller, it is therefore possible to understand whether the calculated charge 20 correct is. Even with controlled operation, the controller output shows that whether the calculated filling is correct.
- the method according to the invention is used to check whether an error has occurred in the Control of the internal combustion engine is actually considered an incorrect charge detection Has cause.
- the lambda value checked again.
- the test is carried out with an active lambda controller the combustion process is not affected. So the is always checked Controller output of the lambda controller. If this deteriorates, i.e. he moves further away from an expected value, it is recognized that no error of the Fill detection is present, but another error, for example in the Fuel injection.
- the change of the parameters of the Intake manifold model is undone.
- a deviation of the lambda value from a lambda value expected for the injected fuel mass and the predicted filling is determined. Then a difference between the predicted filling and a filling required to achieve the expected lambda value is determined. Thereupon, parameters of the intake manifold model are changed in such a way that the intake manifold model for the input value of the intake pressure p s from which the predicted filling was previously calculated gives the previously determined required filling as an output. If the internal combustion engine's lambda controller is inactive, the expected value for the lambda value is the ratio of the relative air quantity to the relative fuel quantity, which is determined from the pilot control.
- the expected lambda value corresponds to the value that should be set by the lambda control.
- the expected lambda value corresponds to the lambda target value which is given to the mixture control.
- the measured lambda value is evaluated, taking into account the controller intervention.
- a diagnosis is carried out using the adaptation, i.e. from the condition that the adaptation should be essentially stationary can be due to a defect or Close errors in the system if an adaptation is necessary continuously or frequently.
- a check of the internal combustion engine in a workshop is then requested here.
- a throttle valve that closes quickly can be a continuous one Make adaptation of the intake manifold model necessary.
- the diagnosis recognizes through the Adaptions that follow one another relatively quickly are a fundamental error is present in the system, so that in a workshop the throttle valve on the one hand Additions free and on the other hand the cause of the addition recognized and can be eliminated.
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)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims (5)
- Verfahren zum Betreiben einer Brennkraftmaschine, wobei mittels eines Saugrohrmodells aus einem Saugrohrdruck ps eine prädizierte Füllung berechnet und einer Gemischkontrolle übergeben wird, welche eine in einen Brennraum der Brennkraftmaschine einzuspritzende Kraftstoffmasse bestimmt, und wobei mittels einer Lambdasonde fortlaufend ein Lambda-Wert eines Abgases bestimmt wird, dadurch gekennzeichnet, daß eine Abweichung des Lambda-Wertes von einem für die eingespritzte Kraftstoffmasse und die prädizierte Füllung erwarteten Lambda-Wert bestimmt wird, daß eine Differenz zwischen der prädizierten Füllung und einer zum Erzielen des erwarteten Lambda-Wertes erforderlichen Füllung bestimmt wird und daß Parameter des Saugrohrmodells derart verändert werden, daß das Saugrohrmodell für denjenigen Eingangswert des Saugdruckes ps, aus dem zuvor die prädizierte Füllung berechnet wurde, die zuvor bestimmte erforderliche Füllung als Ausgang ergibt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Änderung der Parameter des Saugrohrmodells rückgängig gemacht wird, wenn sich nachfolgend eine größere Abweichung des gemessenen Lambda-Wertes vom erwarteten Lambda-Wert ergibt als zuvor.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Anzahl der Änderungen der Parameter des Saugrohrmodells über die Zeit überwacht wird und eine Überprüfung der Brennkraftmaschine in einer Werkstatt angefordert wird, wenn die Anzahl der Änderungen in einer vorbestimmten Zeit einen vorbestimmten Wert überschreitet.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß bei einem inaktiven Lambdaregler der erwartete Wert für den Lambda-Wert das Verhältnis aus relativer Luftmenge zu relativer Kraftstoffmenge, die aus der Vorsteuerung bestimmt wird, ist.
- Verfahren nach wenigstens einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß bei einem aktiven Lambdaregler der erwartete Wert für den Lambda-Wert demjenigen Lambda-Wert entspricht, welcher von dem Lambdaregler eingestellt werden soll.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10241888 | 2002-09-10 | ||
DE2002141888 DE10241888B4 (de) | 2002-09-10 | 2002-09-10 | Verfahren zur Verbesserung der Genauigkeit eines Saugrohrmodells einer Brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1398486A2 true EP1398486A2 (de) | 2004-03-17 |
EP1398486A3 EP1398486A3 (de) | 2006-08-02 |
Family
ID=31502513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03020364A Withdrawn EP1398486A3 (de) | 2002-09-10 | 2003-09-09 | Verfahren zur Verbesserung der Genauigkeit eines Saugrohrmodells einer Brennkraftmaschine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1398486A3 (de) |
DE (1) | DE10241888B4 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1757794A1 (de) * | 2004-06-15 | 2007-02-28 | HONDA MOTOR CO., Ltd. | Betriebssteuervorrichtung für einen verbrennungsmotor |
WO2008142065A1 (de) * | 2007-05-23 | 2008-11-27 | Continental Automotive Gmbh | Verfahren und vorrichtung zum betreiben einer brennkraftmaschine |
EP2053224A3 (de) * | 2007-10-24 | 2009-05-20 | Denso Corporation | Vorrichtung zur Berichtigung der Ansaugluftmenge |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006010710B4 (de) * | 2006-03-08 | 2009-03-19 | Audi Ag | Verfahren zur Luftmassenermittlung bei Brennkraftmaschinen |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62195438A (ja) * | 1986-02-21 | 1987-08-28 | Toyota Motor Corp | 内燃機関の作動状態検知装置 |
EP0936351A2 (de) * | 1998-02-12 | 1999-08-18 | Yamaha Hatsudoki Kabushiki Kaisha | Verfahren und Einrichtung zur Optimalwertsteuerung eines Regelgegenstandes mit lernfähiger Steuerlogik |
US6122589A (en) * | 1998-04-09 | 2000-09-19 | Yamah Hatsudoki Kabushiki Kaisha | Fuel injection control system for engine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19753873B4 (de) * | 1997-12-05 | 2008-05-29 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE19753969B4 (de) * | 1997-12-05 | 2008-04-10 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
DE19841836A1 (de) * | 1998-09-12 | 2000-03-16 | Volkswagen Ag | Optimierung des Frischluftfüllungsverhaltens einer Brennkraftmaschine |
DE10039785B4 (de) * | 2000-08-16 | 2014-02-13 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine |
-
2002
- 2002-09-10 DE DE2002141888 patent/DE10241888B4/de not_active Expired - Fee Related
-
2003
- 2003-09-09 EP EP03020364A patent/EP1398486A3/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62195438A (ja) * | 1986-02-21 | 1987-08-28 | Toyota Motor Corp | 内燃機関の作動状態検知装置 |
EP0936351A2 (de) * | 1998-02-12 | 1999-08-18 | Yamaha Hatsudoki Kabushiki Kaisha | Verfahren und Einrichtung zur Optimalwertsteuerung eines Regelgegenstandes mit lernfähiger Steuerlogik |
US6122589A (en) * | 1998-04-09 | 2000-09-19 | Yamah Hatsudoki Kabushiki Kaisha | Fuel injection control system for engine |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN Bd. 012, Nr. 041 (M-666), 6. Februar 1988 (1988-02-06) & JP 62 195438 A (TOYOTA MOTOR CORP), 28. August 1987 (1987-08-28) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1757794A1 (de) * | 2004-06-15 | 2007-02-28 | HONDA MOTOR CO., Ltd. | Betriebssteuervorrichtung für einen verbrennungsmotor |
EP1757794A4 (de) * | 2004-06-15 | 2009-06-03 | Honda Motor Co Ltd | Betriebssteuervorrichtung für einen verbrennungsmotor |
WO2008142065A1 (de) * | 2007-05-23 | 2008-11-27 | Continental Automotive Gmbh | Verfahren und vorrichtung zum betreiben einer brennkraftmaschine |
US8412437B2 (en) | 2007-05-23 | 2013-04-02 | Continental Automotive Gmbh | Method and device for operating an internal combustion engine |
EP2053224A3 (de) * | 2007-10-24 | 2009-05-20 | Denso Corporation | Vorrichtung zur Berichtigung der Ansaugluftmenge |
US7792632B2 (en) | 2007-10-24 | 2010-09-07 | Denso Corporation | Intake air quantity correcting device |
Also Published As
Publication number | Publication date |
---|---|
EP1398486A3 (de) | 2006-08-02 |
DE10241888B4 (de) | 2012-12-27 |
DE10241888A1 (de) | 2004-03-11 |
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Inventor name: VON DER OHE, THOMAS Inventor name: BRAUN, HOLGER, DR. Inventor name: SPRYSCH, ANDREAS Inventor name: SCHULTALBERS, MATTHIAS Inventor name: PELZ, NORBERT |
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