EP0747590B1 - Verfahren und Einrichtung zur Regelung des Verbrennungsablaufs bei einem Otto-Verbrennungsmotor - Google Patents
Verfahren und Einrichtung zur Regelung des Verbrennungsablaufs bei einem Otto-Verbrennungsmotor Download PDFInfo
- Publication number
- EP0747590B1 EP0747590B1 EP96106870A EP96106870A EP0747590B1 EP 0747590 B1 EP0747590 B1 EP 0747590B1 EP 96106870 A EP96106870 A EP 96106870A EP 96106870 A EP96106870 A EP 96106870A EP 0747590 B1 EP0747590 B1 EP 0747590B1
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- EP
- European Patent Office
- Prior art keywords
- function
- unit
- burn
- actual
- calculated
- 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.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/028—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the combustion timing or phasing
-
- 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
- F02D41/1404—Fuzzy logic 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
- F02D41/02—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
- F02D41/1405—Neural network control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/027—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using knock sensors
Definitions
- the invention relates to a method for controlling the Combustion process in an Otto combustion engine as well a control device suitable for carrying out such a method.
- a logic control in a pre-control Variety of characteristics and maps to provide the Engine control variables, such as ignition timing, start of injection, end of injection and throttle valve angle.
- Engine control variables such as ignition timing, start of injection, end of injection and throttle valve angle.
- a control device shown in US Pat. No. 5,200,898 for an internal combustion engine is a neural network provided periodic information about the current Throttle valve angle and its rate of change are supplied.
- the neural network predicts the throttle opening angle before, and this information is provided by the Control device for controlling a fuel injection unit, among other things used.
- Ignition system for an internal combustion engine becomes one for fuel loading of the workspace representative parameters in each case measured before the ignition to determine the combustion characteristics for this work cycle and the suitable ignition timing with a view to reducing the fluctuations in predict engine torque generated from work cycle to work cycle.
- a motor control is disclosed in JP 5-163996 (A) known in which the engine torque by appropriate Setting the air intake quantity and the ignition timing to one desired value is regulated.
- DE-C-43 18 504 discloses an object according to the preamble of the independent claims.
- the invention is a technical problem of providing a method and a device with which a comparatively accurate, the thermodynamics of the combustion process Regulation of the combustion process that takes into account as far as possible in an Otto combustion engine.
- Control variables for the next work cycle can in particular the start of injection, the end of injection, the Ignition timing and the throttle valve angle.
- the engine parameters air mass, Temperature and speed as well as other parameters of the Residual gas content and the lambda value are used. With this The procedure becomes the actual fuel conversion into thermal energy observed and can take into account the given Boundary conditions, such as driver request and operational requirements, be managed.
- control device can have a corresponding one Have unit for determining the center of combustion.
- this is Stationary control overlaid a stationary control for which the information on the input side next to the stationary controller output signal over the current operating point and / or over the current engine power or engine consumption is taken into account become.
- This type of regulation can be carried out in accordance with claim 6 characterized control device are carried out.
- the determination is made the actual blow function by means of a neural Network. This enables them to be easily determined in real time, why the generalization and learning ability of the network as well as its self-organization function for independent production a relationship of an input signal to be classified can be used for a desired output signal.
- the single figure shows a block diagram of a combustion control for an Otto combustion engine.
- the control device monitors the actual state the combustion process on the engine to be controlled (1) by means of an actual condition detection unit (2), which for relevant parameters measured the combustion process and the rest relevant engine parameters are calculated. These are in particular the engine speed, the initial temperature and the initial pressure a working cycle as well as the residual gas content and the lambda value. By means of these detected quantities, it is a downstream one Unit (3) possible, the target blow-through function in the gas exchange phase of the respective work cycle.
- the Burnout function is known to be the integral of Burning curve over time or over the crank angle. For the Prediction of the blow-through function becomes influencing factor equations on which the influences of the individual Operating parameters in their effect on the behavior of the engine describe separately from each other.
- the engine type is indicated in advance at suitable operating points and systematic series of measurements are carried out until the Influencing factor equations determined with sufficient certainty are.
- the advance calculation is based on suitable reference points, several of which are provided across the entire operating range are.
- a neural network (4) is provided, one or more for the combustion process representative, recorded quantities, for example the Course of the combustion chamber pressure depending on the crank angle and / or the lambda value and the exhaust gas temperature and this in the high pressure phase of the respective work cycle the associated actual blow-through function in real time determined.
- the determined blowout function can be the variables relevant to the course of the combustion process, such as burning time, apparent ignition delay, Derive residual gas content and internal mean pressure. Besides knock detection is possible at the same time, which means a separate one Knock sensor unnecessary.
- a subsequent comparison stage (5) is the data of predicted target blowout function and the determined Actual burn-through function is supplied, whereupon this unit (5) carries out a target / actual value comparison of the blow-through functions.
- the functional relationship used determines the current one Values of the influencing factors determining the blow-through function, such as ignition timing, lambda value, initial temperature and initial pressure, Residual gas content and speed, depending on the relevant Burn-out function parameters, such as burn time, Apparent ignition delay and shape parameters, i.e. Slope adjustment the blow function curve, such that these values to the actual blow-through function determined in real time by the neural network (4) fit.
- This information about the optimal, current influencing factor values is fed to a downstream stationary controller (6), the thus for the provision of optimized manipulated variables, i.e. Ignition timing (ZZP), start of injection (ti), end of injection (ta) and throttle valve angle (DK), taking care of the ignition timing the apparent ignition delay and the focus of combustion and for the lambda value the apparent one Ignition delay, the burn time and the shape parameter of the blowout function used as regulatory criteria.
- ZZP Ignition timing
- ti start of injection
- ta end of injection
- DK throttle valve angle
- the output signal of the stationary controller (6) is a following Transient controller (9) supplied, which as a fuzzy controller or as a conventional PI (D) controller.
- Transient controller 9 supplied, which as a fuzzy controller or as a conventional PI (D) controller.
- Input information serves the current performance and the current consumption in the respective work cycle, as it is from a upstream unit (7) from the actual blow-through function of the neural network (4) and the actual motor status data Actual state detection unit (2) can be determined.
- a parallel unit determines input information (8), in which an operating point map is stored, the weight factors for the type of engine control desired by the driver, i.e. for the respective operating point in terms of performance, Consumption and emission.
- the driver request is made via the Throttle valve change and by observing past work cycles and possible prediction of the future work cycle detected.
- the transient controller (9) optionally the output signal of the stationary controller by taking the driving request into account and the respective operating point requirements, the All of the regulatory events described above under consideration of cylinder synchronization runs individually for each cylinder.
- the output signal is in an output-side unit (10) of the transient controller (9) in the corresponding motor actuator manipulated variable values converted to the engine (1) for one the following work cycle.
- the control concept described enables a controlled Multi-size control, when changing the operating point of a corresponding Change of manipulated variable can be assigned. It will be the actual fuel conversion to thermal energy tracked and according to the specified boundary conditions, such as driver request and operating point requirements, regulated what is an optimal Adjustment of the control variable implemented.
- a neural Network to determine the actual blowout function and / or a fuzzy controller as the transient controller Real-time application of this scheme is facilitated.
- the driver's request to change the operating point changes to the requirements regarding the desired performance, consumption, emissions, Smoothness and noise adjusted easily, and the Control variables are optimized individually for each cylinder through thermodynamic analysis and evaluation of from a size determining the combustion process, such as the combustion chamber pressure process, Actual blow-out function obtained by means of the neural network and the pre-calculated target blowout function.
- control units shown individually in the figure no need to be separate components, but rather than individual functional units for illustration of the regulatory process must be viewed in a more appropriate manner Combined in this way to form the respective control hardware components could be.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Evolutionary Computation (AREA)
- Artificial Intelligence (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Software Systems (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Description
Claims (7)
- Verfahren zur Regelung des Verbrennungsablaufs bei einem Otto-Verbrennungsmotor, bei demdie den Verbrennungsverlauf bestimmenden Stellgrößen (ZZP, ti, ta, DK) für einen jeweils nachfolgenden Arbeitszyklus durch eine Regeleinrichtung in Abhängigkeit vom erfaßten Verbrennungsverlauf eines vorangegangenen Arbeitszyklus festgelegt werden,die Ist-Durchbrennfunktion während der Hochdruckphase des jeweiligen Arbeitszyklus in Echtzeit ermittelt wirdeine Soll-Durchbrennfunktion für einen jeweiligen Arbeitszyklus während dessen Ladungswechselphase mit Hilfe von erfaßten Istwerten von Durchbrennfunktions-Einflußfaktoren eines vorangegangenen Arbeitszyklus vorausberechnet wird, unddie vorausberechnete Soll- mit der Ist-Durchbrennfunktion verglichen und daraus aktualisierte Werte für die Durchbrennfunktions-Einflußfaktoren gewonnen werden, die der verbrennungsregelnden Bestimmung von Stellgrößenwerten (ZZP, ti, ta, DK) für einen nachfolgenden Arbeitszyklus zugrundegelegt werden.
- Verfahren nach Anspruch 1, weiter
dadurch gekennzeichnet, daß
die aktualisierten Werte für die Durchbrennfunktions-Einflußfaktoren zusammen mit der für den jeweiligen Arbeitszyklus anhand eines Kennfeldes ermittelten Verbrennungsschwerpunktlage zur Bestimmung von stationärbetriebsgeregelten Stellgrößenwerten (ZZP, ti, ta, DK) herangezogen werden. - Verfahren nach Anspruch 2, weiter
dadurch gekennzeichnet, daß
die stationärbetriebsgeregelten Stellgrößenwerte unter Berücksichtigung des momentanen Betriebspunktes und/oder der ermittelten momentanen Motorleistung und/oder dem ermittelten momentanen Verbrauch geregelt in Instationärbetrieb-Stellgrößenwerte überführt werden. - Einrichtung zur Regelung des Verbrennungsablaufs bei einem Otto-Verbrennungsmotor, miteiner Einheit (2) zur Erfassung von Motor-Istzustandsgrößen undeiner Reglereinheit, (6, 9), deren Ausgangssignal die Einstellung der Motorstellglieder bestimmt,einer Einheit (4) zur Ermittlung der Ist-Durchbrennfunkcion während einer Arbeitszyklus-Hochdruckphase
folgende weitere Elemente zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 3:eine der die Motor-Istzustandsgrößen bestimmenden Einheit (2) nachgeschaltete Einheit (3) zur Vorausberechnung der Soll-Durchbrennfunktion während einer Arbeitszyklus-Ladungswechselphase, undeine der Reglereinheit (6, 9) vorgeschaltete Einheit (5) zur Ermittlung der zur jeweils ermittelten Ist-Durchbrennfunktion gehörigen Einflußfaktorwerte durch Vergleich der vorausberechneten Soll-Durchbrennfunktion mit der ermittelten Ist-Durchbrennfunktion, wobei die Reglereinheit (6, 9) die so ermittelten Einflußfaktoren werte zur Festlegung der Ausgangssignale benützt. - Regeleinrichtung nach Anspruch 4, weiter
gekennzeichnet durch
einer der Reglereinheit (6, 9) parallel zu der die Einflußfaktorwerte ermittelnden Einheit (5) vorgeschaltete Einheit (6) zur kennfeldbasierten Bestimmung der Verbrennungsschwerpunktlage anhand der ermittelten Ist-Durchbrennfunktion und der erfaßten Motor-Istzustandsgrößen. - Regeleinrichtung nach Anspruch 4 oder 5, weiter
dadurch gekennzeichnet, daß
die Reglereinheit aus einem vorgeordneten Stationärregler (6) und einem nachgeordneten Instätionärregler (9) besteht, wobei letzterem parallel zum Stationärregler eine Einheit (7) zur aktuellen Leistungs- und Verbrauchsberechnung und/oder eine Einheit (8) zur kennfeldbasierten Betriebspunktermittlung vorgeschaltet sind, denen jeweils die Ausgangssignale der Einheit (4) zur Ermittlung der Ist-Durchbrennfunktion und der Einheit (2) zur Erfassung der Istzustandsgrößen zugeführt sind. - Regeleinrichtung nach einem der Ansprüche 4 bis 6, weiter
dadurch gekennzeichnet, daß
die Einheit zur Ermittlung der Ist-Durchbrennfunktion aus einem neuronalen Netzwerk (4) besteht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19520605 | 1995-06-06 | ||
DE19520605A DE19520605C1 (de) | 1995-06-06 | 1995-06-06 | Verfahren und Einrichtung zur Regelung des Verbrennungsablaufs bei einem Otto-Verbrennungsmotor |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0747590A2 EP0747590A2 (de) | 1996-12-11 |
EP0747590A3 EP0747590A3 (de) | 1999-02-03 |
EP0747590B1 true EP0747590B1 (de) | 2001-12-19 |
Family
ID=7763727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96106870A Expired - Lifetime EP0747590B1 (de) | 1995-06-06 | 1996-05-02 | Verfahren und Einrichtung zur Regelung des Verbrennungsablaufs bei einem Otto-Verbrennungsmotor |
Country Status (3)
Country | Link |
---|---|
US (1) | US5854990A (de) |
EP (1) | EP0747590B1 (de) |
DE (2) | DE19520605C1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004054271A1 (de) * | 2004-11-09 | 2006-05-11 | Fev Motorentechnik Gmbh | Vorhersageverfahren für Betriebszustände einer Verbrennungskraftmaschine |
DE102008038102A1 (de) * | 2008-08-18 | 2010-03-25 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren zur Verhinderung einer Vorentflammung eines Kraftstoff-Luft-Gemisches in einem Zylinderraum einer ottomotorisch betriebenen Brennkraftmaschine mit hohem Verdichtungsverhältnis |
DE102009008246B3 (de) * | 2009-02-06 | 2010-08-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren zur Vorhersage einer Vorentflammung eines Kraftstoff-Luft-Gemisches in einem Zylinderraum einer ottomotorisch betriebenen Brennkraftmaschine |
Families Citing this family (14)
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JP4036906B2 (ja) * | 1996-05-15 | 2008-01-23 | 三菱電機株式会社 | 筒内噴射内燃機関の制御装置 |
DE19729212C2 (de) * | 1997-07-09 | 2002-01-24 | Forsch Transferzentrum Ev An D | Verfahren zur optimierten Steuerung von Verbrennungsmotoren |
DE19916725C2 (de) * | 1999-04-13 | 2001-11-08 | Daimler Chrysler Ag | Verfahren zur Drehmomentüberwachung bei Otto-Motoren in Kraftfahrzeugen |
DE10043383C2 (de) * | 2000-09-02 | 2002-06-20 | Daimler Chrysler Ag | Verfahren zur Bestimmung des Stickoxidgehalts in sauerstoffhaltigen Abgasen von Brennkraftmaschinen |
DE10258874A1 (de) * | 2002-12-17 | 2004-07-22 | Daimlerchrysler Ag | Verfahren zur Steuerung einer Brennkraftmaschine |
DE10307367A1 (de) * | 2003-02-21 | 2004-09-09 | B + V Industrietechnik Gmbh | Verfahren und Vorrichtung zur Regelung von gasbetriebenen Motoren |
DE10328015A1 (de) * | 2003-06-23 | 2005-01-13 | Volkswagen Ag | Virtuelle Lambdasonde für ein Kraftfahrzeug |
US7210286B2 (en) * | 2004-12-20 | 2007-05-01 | Detroit Diesel Corporation | Method and system for controlling fuel included within exhaust gases to facilitate regeneration of a particulate filter |
US7246597B2 (en) * | 2005-11-16 | 2007-07-24 | Gm Global Technology Operations, Inc. | Method and apparatus to operate a homogeneous charge compression-ignition engine |
US7367319B2 (en) * | 2005-11-16 | 2008-05-06 | Gm Global Technology Operations, Inc. | Method and apparatus to determine magnitude of combustion chamber deposits |
DE102006000973A1 (de) * | 2006-01-07 | 2007-07-12 | Daimlerchrysler Ag | Verfahren zur zylinderindividuellen Restgasbestimmung bei einem Verbrennungsmotor |
DE102014005985A1 (de) * | 2014-04-25 | 2015-05-07 | Mtu Friedrichshafen Gmbh | Betriebsverfahren für einen Magergasmotor und Magergasmotor |
EP3336335B1 (de) | 2016-12-15 | 2021-01-27 | Caterpillar Motoren GmbH & Co. KG | Verfahren zum betrieb eines verbrennungsmotors mit gasförmigem brennstoff |
KR102165878B1 (ko) * | 2020-01-20 | 2020-10-14 | 주식회사 현대케피코 | 인공신경망을 이용한 차량 엔진 토크 추정 방법 |
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1995
- 1995-06-06 DE DE19520605A patent/DE19520605C1/de not_active Expired - Fee Related
-
1996
- 1996-05-02 DE DE59608476T patent/DE59608476D1/de not_active Expired - Fee Related
- 1996-05-02 EP EP96106870A patent/EP0747590B1/de not_active Expired - Lifetime
- 1996-06-06 US US08/659,516 patent/US5854990A/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4318504C1 (de) * | 1993-06-03 | 1994-10-27 | Siemens Ag | Verfahren zur Erzeugung eines Regelsignals für den Zündzeitpunkt einer Brennkraftmaschine |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004054271A1 (de) * | 2004-11-09 | 2006-05-11 | Fev Motorentechnik Gmbh | Vorhersageverfahren für Betriebszustände einer Verbrennungskraftmaschine |
DE102008038102A1 (de) * | 2008-08-18 | 2010-03-25 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren zur Verhinderung einer Vorentflammung eines Kraftstoff-Luft-Gemisches in einem Zylinderraum einer ottomotorisch betriebenen Brennkraftmaschine mit hohem Verdichtungsverhältnis |
DE102008038102B4 (de) * | 2008-08-18 | 2010-05-27 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren zur Verhinderung einer Vorentflammung eines Kraftstoff-Luft-Gemisches in einem Zylinderraum einer ottomotorisch betriebenen Brennkraftmaschine mit hohem Verdichtungsverhältnis |
DE102009008246B3 (de) * | 2009-02-06 | 2010-08-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Verfahren zur Vorhersage einer Vorentflammung eines Kraftstoff-Luft-Gemisches in einem Zylinderraum einer ottomotorisch betriebenen Brennkraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
DE19520605C1 (de) | 1996-05-23 |
EP0747590A3 (de) | 1999-02-03 |
US5854990A (en) | 1998-12-29 |
DE59608476D1 (de) | 2002-01-31 |
EP0747590A2 (de) | 1996-12-11 |
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