DE102004014366A1 - Internal combustion engine controlling method, involves controlling engine based on status of change of sign with respect to increase in magnitude that characterises pressure in each chamber and amplitude of magnitude, during change of sign - Google Patents
Internal combustion engine controlling method, involves controlling engine based on status of change of sign with respect to increase in magnitude that characterises pressure in each chamber and amplitude of magnitude, during change of sign Download PDFInfo
- Publication number
- DE102004014366A1 DE102004014366A1 DE102004014366A DE102004014366A DE102004014366A1 DE 102004014366 A1 DE102004014366 A1 DE 102004014366A1 DE 102004014366 A DE102004014366 A DE 102004014366A DE 102004014366 A DE102004014366 A DE 102004014366A DE 102004014366 A1 DE102004014366 A1 DE 102004014366A1
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- DE
- Germany
- Prior art keywords
- sign
- change
- magnitude
- internal combustion
- combustion engine
- 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.)
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Links
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
- 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
- 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
- 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
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
-
- 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
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/401—Controlling injection timing
-
- 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
- F02D2200/025—Engine noise, e.g. determined by using an acoustic sensor
-
- 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
- F02D35/021—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions using an ionic current sensor
-
- 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
- F02D41/008—Controlling each cylinder individually
- F02D41/0085—Balancing of cylinder outputs, e.g. speed, torque or air-fuel ratio
-
- 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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Steuerung einer Brennkraftmaschine gemäß den Oberbegriffen der unabhängigen Ansprüche.The The invention relates to a method and a device for controlling an internal combustion engine according to the preambles the independent one Claims.
Aus
der
Diese Vorgehensweise besitzt den Nachteil, dass eine hochauflösende Erfassung des Druckverlaufs erforderlich ist. Dazu werden entsprechende Sensorsignale und Rechnerkapazität benötigt.These The approach has the disadvantage that a high-resolution detection the pressure curve is required. For this purpose, corresponding sensor signals and computer capacity needed.
Erfindungsgemäß ist nun vorgesehen, dass bei einem Verfahren und einer Vorrichtung zur Steuerung einer Brennkraftmaschine die Steuerung der Brennkraftmaschine abhängig von der Lage eines Vorzeichenwechsels einer Größe und/oder von der Amplitude der Größe beim Vorzeichenwechsel erfolgt. Als Größe wird dabei ein Ausgangssignal eines Sensors verwendet, der ein Signal bereitstellt, das den Brennraumdruck charakterisiert. Die Erfassung dieser Größen ist mittels einer einfachen Schaltung, insbesondere einer Delta-Peak- bzw. einer Peak-Detector-Schaltung möglich. Mittels einer solchen einfachen Schaltung können detaillierte Informationen, die in der Lage des Vorzeichenwechsels der Steigung des Druckverlaufs und der Amplitude des Druckverlaufs beim Vorzeichenwechsel enthalten sind, gewonnen werden.According to the invention is now provided that in a method and a device for control an internal combustion engine, the control of the internal combustion engine depending on the location of a sign change of a size and / or of the amplitude the size at Sign change takes place. The size becomes an output signal used a sensor that provides a signal that the combustion chamber pressure characterized. The detection of these quantities is by means of a simple Circuit, in particular a delta-peak or a peak-detector circuit possible. By means of such a simple circuit, detailed information, in the position of the change of sign of the slope of the pressure curve and the amplitude of the pressure curve during the sign change included are to be won.
Vorteilhaft ist, dass ein sehr einfaches und ressourcenschonendes Verfahren bereitgestellt wird. Eine hochauflösende Erfassung des kompletten Druckverlaufs ist nicht erforderlich.Advantageous is that a very simple and resource saving process provided. A high-resolution acquisition of the complete pressure curve not necessary.
Zeichnungdrawing
Die Erfindung wird nachstehend anhand der in der Zeichnung dargestellten Ausführungsformen erläutert. Es zeigenThe Invention will be described below with reference to the drawing Embodiments explained. It demonstrate
Beschreibung des Ausführungsbeispielsdescription of the embodiment
In
In
Kurz vor, während oder kurz nach dem Zeitpunkt T1 erfolgt die Kraftstoffzumessung. Ein Zünden der Verbrennung bewirkt einen erneuten Anstieg des Brennraumdrucks. Der Anstieg erfolgt ab dem Zeitpunkt T2, d. h. der Druck steigt ab dem Zeitpunkt T2 wieder an. Der Zeitpunkt T2 ist ein Maß für den Zündbeginn bzw. den Verbrennungsbeginn. Zum Zeitpunkt T3 fällt der Druck im Brennraum wieder ab. Der Zeitpunkt T3 ist ein Maß für eine optimale Verbrennung.Short before, while or shortly after the time T1, the fuel metering takes place. An ignition of Combustion causes a renewed increase in the combustion chamber pressure. The increase takes place from time T2, d. H. the pressure increases from the time T2 back on. The time T2 is a measure of the start of ignition or the beginning of combustion. At time T3, the pressure in the combustion chamber drops again. Time T3 is a measure of optimal combustion.
Der Wert der Amplitude A des Drucks P beim Maximums zum Zeitpunkt T3 ist ein Maß dafür, ob die korrekte Menge zugemessen wird. Ist die Menge zu groß, so nimmt das Maximum einen zu großen Wert an, ist die Menge zu klein, nimmt das Maximum einen zu kleinen Wert an.Of the Value of the amplitude A of the pressure P at the maximum at time T3 is a measure of whether the correct Quantity is metered. If the amount is too large, the maximum takes one too big Value on, the amount is too small, the maximum takes one too small Value.
Die zeitlichen Lagen von T2 und T3 erlauben Rückschlüsse auf eventuelle Fehlfunktionen der Kraftstoffzumessung, z. B. zu spätes oder zu langsames Öffnen des Injektors.The Temporal positions of T2 and T3 allow conclusions about possible malfunctions the fuel metering, z. B. too late or too slow opening of Injector.
Als
Sensoren
Aus
den so gewonnen Informationen werden Alterungserscheinungen und/oder
Fehlfunktionen der Injektoren erkannt, die dann mit entsprechend korrigierten
Ansteuerungen kompensiert werden. In
Mittels
der Peak-Detector- bzw. Delta-Peakschaltung werden die lokalen Maxima
zum Zeitpunkt T1 und T3 bzw. das lokale Minimum zum Zeitpunkt T2
erkannt. Ein lokales Maximum liegt vor, wenn das Ausgangssignal
S der Peak-Detectorschaltung von seinem hohen auf seinen niederen
Pegel abfällt
und ein lokales Minima wird erkannt, wenn das Signal von seinem
niederen auf seinen hohen Pegel ansteigt. d. h. die Schaltung
Bei einer ersten Ausführungsform ist vorgesehen, dass diese Werte mit abgespeicherten Referenzwerten verglichen werden. Dadurch können alle Veränderungen, zum Beispiel Alterung der Injektoren, erkannt und anschließend gegebenenfalls kompensiert werden. Auch eventuelle Motorschäden, wie Undichtigkeiten des Brennraums, lassen sich so feststellen. d. h. tritt der Zeitpunkt T2 bzw. T3 nicht zum erwarteten Zeitpunkt auf, wird ein Korrektursignal gebildet, das z. B. den Einspritzzeitpunkt, bei dem der Injektor angesteuert wird, entsprechend korrigiert, sodass sich die Zeitpunkte T2 und/oder T3 dem erwarteten Wert annähern. Entsprechendes gilt auch für die Amplitude des Signals. d. h. entspricht die Amplitude A des Messwerts nicht dem erwarteten Wert, wird die Menge durch veränderte Ansteuerung so lange erhöht bzw. erniedrigt, bis sie dem erwarteten Wert entspricht.at a first embodiment is provided that these values with stored reference values be compared. Thereby can all changes, For example, aging of the injectors, detected and subsequently, if necessary be compensated. Also possible engine damages, like leaks of the Brennraums, can be determined so. d. H. occurs the time T2 and T3 not at the expected time, a correction signal formed, the z. B. the injection timing at which the injector is corrected, corrected accordingly, so that the times T2 and / or T3 approach the expected value. The same applies to the amplitude the signal. d. H. does not correspond to the amplitude A of the measured value the expected value, the amount is changed by so long elevated or decreased until it corresponds to the expected value.
Besonders vorteilhaft ist es, wenn für jeden Brennraum ein entsprechender Sensor und eine Auswertung vorgesehen sind. In diesem Fall ist erfindungsgemäß vorgesehen, dass die Messwerte der einzelnen Zylinder untereinander verglichen werden. Die Korrekturwerte werden dann so ermittelt, dass alle Zylinder zum jeweils gleichen Zeitpunkt die gleiche Kraftstoffmenge zumessen. d. h., dass vorzugsweise jedem Zylinder eine Regelung zugeordnet wird, die den entsprechenden Wert des Beginns und der Menge der Kraftstoffzumessung, die aus den Werten T2, T3 bzw. A abgeleitet werden auf einen gemeinsamen Mittelwert der einzelnen Zylinder eingeregelt werden. Weicht einer der Zylinder wesentlich, d. h. mehr als einen Schwellenwert von dem Mittelwert ab, wird von einem Defekt des Injektors und/oder des entsprechenden Zylinders ausgegangen.Especially it is advantageous if for each combustion chamber a corresponding sensor and an evaluation provided are. In this case, the invention provides that the measured values the individual cylinders are compared with each other. The correction values are then determined so that all cylinders to each same Time to measure the same amount of fuel. d. h. that preferably each cylinder is assigned a control that the corresponding Value of the beginning and amount of fuel metering that out The values T2, T3 and A are derived on a common Mean value of the individual cylinders are adjusted. Dodge one the cylinder is essential, d. H. more than a threshold of the mean value is determined by a defect of the injector and / or of the corresponding cylinder.
Bei
einer weiteren Ausführungsform
ist vorgesehen, dass in geeigneten Betriebszuständen der tatsächliche
obere Totpunkt erfasst wird, d. h. der Zeitpunkt T1 wird als oberer
Totpunkt angesehen. Ausgehend von diesem erfassten tatsächlichen
oberen Totpunkt kann das Signal des zweiten Sensors
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004014366A DE102004014366A1 (en) | 2004-03-24 | 2004-03-24 | Internal combustion engine controlling method, involves controlling engine based on status of change of sign with respect to increase in magnitude that characterises pressure in each chamber and amplitude of magnitude, during change of sign |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004014366A DE102004014366A1 (en) | 2004-03-24 | 2004-03-24 | Internal combustion engine controlling method, involves controlling engine based on status of change of sign with respect to increase in magnitude that characterises pressure in each chamber and amplitude of magnitude, during change of sign |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004014366A1 true DE102004014366A1 (en) | 2005-10-13 |
Family
ID=34982895
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102004014366A Withdrawn DE102004014366A1 (en) | 2004-03-24 | 2004-03-24 | Internal combustion engine controlling method, involves controlling engine based on status of change of sign with respect to increase in magnitude that characterises pressure in each chamber and amplitude of magnitude, during change of sign |
Country Status (1)
Country | Link |
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DE (1) | DE102004014366A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009000060B4 (en) | 2008-03-18 | 2019-12-12 | Denso Corporation | Irregularity diagnosis apparatus and abnormality diagnosis method for an internal combustion engine |
-
2004
- 2004-03-24 DE DE102004014366A patent/DE102004014366A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009000060B4 (en) | 2008-03-18 | 2019-12-12 | Denso Corporation | Irregularity diagnosis apparatus and abnormality diagnosis method for an internal combustion engine |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20111001 |