EP0547258A1 - Ignition device for internal combustion engine - Google Patents

Ignition device for internal combustion engine Download PDF

Info

Publication number
EP0547258A1
EP0547258A1 EP91121608A EP91121608A EP0547258A1 EP 0547258 A1 EP0547258 A1 EP 0547258A1 EP 91121608 A EP91121608 A EP 91121608A EP 91121608 A EP91121608 A EP 91121608A EP 0547258 A1 EP0547258 A1 EP 0547258A1
Authority
EP
European Patent Office
Prior art keywords
value
ignition
ignition device
cylinder
stored
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
Application number
EP91121608A
Other languages
German (de)
French (fr)
Other versions
EP0547258B1 (en
Inventor
Erwin Dr. Dipl.-Ing. Achleitner
Hellmut Dipl.-Ing. Freudenberg
Manfred Dr. Dipl.-Ing. Wier
Thomas Dipl.-Ing. Elbe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Priority to DE59105676T priority Critical patent/DE59105676D1/en
Priority to EP91121608A priority patent/EP0547258B1/en
Priority to US07/989,229 priority patent/US5301649A/en
Priority to JP4353859A priority patent/JPH05272440A/en
Publication of EP0547258A1 publication Critical patent/EP0547258A1/en
Application granted granted Critical
Publication of EP0547258B1 publication Critical patent/EP0547258B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • F02P3/045—Layout of circuits for control of the dwell or anti dwell time
    • F02P3/0453—Opening or closing the primary coil circuit with semiconductor devices
    • F02P3/0456—Opening or closing the primary coil circuit with semiconductor devices using digital techniques
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/10—Measuring dwell or antidwell time

Definitions

  • the invention relates to an ignition device for internal combustion engines according to the preamble of claim 1 (European patent application 90 11 50 95.3).
  • an ignition device for internal combustion engines in which the spark discharge duration is regulated to a predetermined value by comparing the time period within which the spark discharge current has dropped to a predetermined discharge current level with a predetermined target value and depending on it the closing time of the primary circuit of the ignition coil is readjusted from the comparison result. This is intended to compensate for changes in the load on the spark plug if a shunt resistance is formed as a result of the spark plug electrodes being soiled or if the electrode spacing is increased by erosion.
  • the object of the invention is to design the generic ignition device in such a way that such spark plug loads and moreover temperature effects of the ignition coil and manufacturer-specific differences in the ignition coils and spark plugs, ie the ignition circuit as a whole, can be recognized and compensated for.
  • the peak value of the current flowing in the spark plug or secondary circuit at the time of ignition or shortly thereafter is compared with a target value by regulating the closing time. If the peak value is higher or lower than the specified target value, which in this exemplary embodiment is dependent on the engine speed and engine load, as a result of some cause - transmission ratio or quality of the ignition coil, spark plug or cable condition, soiling, contact wear, etc., the closing time of the primary circuit becomes shorter or longer to bring the actual value back to the setpoint.
  • the only figure in the drawing shows a basic circuit diagram of the ignition device.
  • the primary winding 1 of an ignition coil SP is controlled via a switching transistor 3.
  • the first connection of the secondary winding 2 becomes one or more spark plugs ZK and the second connection is connected via a sensor 4 to the negative pole of a supply voltage source, not shown.
  • a further secondary winding of possible further ignition coils, the second connections of which lead to the common point P, is indicated by dashed lines. From this point P, a measuring line 8 leads via a peak value rectifier 14 to a connection pin 12 of a microprocessor 16.
  • the circuit corresponds to the known ignition device from which the invention is based.
  • the microprocessor 16 has the function of a software Ignition control circuit on.
  • the most important variables of an ignition control are the ignition timing ZZP and the closing time SD of the primary circuit. The start of closing, based on the crankshaft position of the internal combustion engine, can then be determined from both variables.
  • the ignition point is determined in a manner known per se from various operating parameters of the internal combustion engine and is of no further interest here.
  • the start and end of ignition determine the start and end of a control pulse ST which reaches the base of the switching transistor 3 and opens it, so that current can flow in the primary winding 1 of the ignition coil SP.
  • the value of the closing time consists of a pilot control value V, which is weighted with an adaptation value fakx.
  • a plurality of pilot control values V are stored in a table or in a characteristic diagram as a function of at least one operating parameter, for example the engine speed N, the engine load LM, the engine temperature T or, as in this exemplary embodiment, the supply voltage UB.
  • setpoints S for the peak value of the ignition current are stored in a map, depending on the engine speed N and engine load (measured via the air mass LM).
  • Actual value Ix and setpoint S are transmitted at a suitable point in time to a first arithmetic circuit 7 (these and other arithmetic circuits are contained in the software of the microprocessor 16 in software), which one of the difference between the two Adapted value fakx calculated values, which is then stored in a buffer 9.
  • the assignment can be additive, multiplicative or other.
  • This buffer 9 has a memory location for each cylinder x of the internal combustion engine, in which the calculated adaptation value fakx is stored in a cylinder-selective manner until it is further processed for the next ignition process of this cylinder.
  • a further program step shown in the drawing as a further arithmetic circuit 11, is used to check whether the calculated value fakx is greater than a predetermined upper (fakmax) or less than a predetermined lower limit fakmin. If this is the case, fakx is set to this limit value before further processing and then buffered.
  • the currently valid pilot control value V and the adaptation value fakx are transferred from their memories 5 and 9 to a second arithmetic circuit 10 and there, for example additively or multiplicatively, linked to one another to form the closing time SDx of the cylinder x.
  • the closing times are thus calculated as follows: Before the closing duration values SDx determined in this way are output, a check is also carried out in this exemplary embodiment to determine whether they are greater than a predetermined upper limit value (SDmax) or less than a predetermined lower limit value (SDmin). These limit values can preferably be stored as a function of at least one operating parameter.
  • SDmax a predetermined upper limit value
  • SDmin a predetermined lower limit value
  • closing duration value SD ⁇ SDmin is too small, reliable ignition is not guaranteed and if the closing duration value SD> SDmax is too high, there is a risk of the ignition coil becoming too hot.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

Ignition device for internal-combustion engines with secondary winding, separated from the primary winding, of an ignition coil and with a sensor in the sparkplug circuit, the peak value of the ignition current being stored during each ignition in a peak value rectifier and being subsequently processed to form a value of the dwell time of the primary circuit which is kept constant by means of a set value control in order to compensate fluctuations and changes in the circuit due to contamination or ageing. The dwell time is determined below a limit value of the engine speed in a cylinder-selective fashion and determined above this limit value for one specific cylinder only and also used for all the other cylinders. …<IMAGE>…

Description

Die Erfindung betrifft eine Zündeinrichtung für Brennkraftmaschinen nach dem Oberbegriff von Anspruch 1 (europäische Patentanmeldung 90 11 50 95.3).The invention relates to an ignition device for internal combustion engines according to the preamble of claim 1 (European patent application 90 11 50 95.3).

Aus der DE-PS 27 59 154 ist eine Zündeinrichtung für Brennkraftmaschinen bekannt, bei welcher die Funkenentladedauer auf einen vorgegebenen Wert geregelt wird, indem die Zeitdauer, innerhalb welcher der Funkenentladestrom bis zu einem vorgegebenen Entladestromniveau abgesunken ist, mit einem vorgegebenen Sollwert verglichen wird und abhängig von dem Vergleichsergebnis die Schließdauer des Primärstromkreises der Zündspule nachgeregelt wird. Damit sollen Änderungen der Belastung an der Zündkerze ausgeglichen werden, wenn infolge Verschmutzung der Zündkerzenelektroden ein Nebenschlußwiderstand gebildet oder durch Abbrand der Elektrodenabstand vergrößert wird.From DE-PS 27 59 154 an ignition device for internal combustion engines is known in which the spark discharge duration is regulated to a predetermined value by comparing the time period within which the spark discharge current has dropped to a predetermined discharge current level with a predetermined target value and depending on it the closing time of the primary circuit of the ignition coil is readjusted from the comparison result. This is intended to compensate for changes in the load on the spark plug if a shunt resistance is formed as a result of the spark plug electrodes being soiled or if the electrode spacing is increased by erosion.

Aus der DE-OS 21 45 285 ist bekannt, daß zum Entzünden des Kraftstoff-Luft-Gemisches in einem Zylinder die anfängliche Stromstärke im Zündfunken wichtig ist.From DE-OS 21 45 285 it is known that the initial current intensity in the ignition spark is important for igniting the fuel-air mixture in a cylinder.

Dieser Spitzenwert und die Steigung der abfallenden Kurve des Funkenentladestroms vermindern sich aber mit zunehmender Verschmutzung bzw. Vergrößerung des Elektrodenabstandes, so daß die zur Verfügung stehende Zündenergie immer geringer werden kann, ohne eine Nachregelung der Schließdauer beim Gegenstand nach der DE-PS 27 59 154 zur Folge zu haben.However, this peak value and the slope of the falling curve of the spark discharge current decrease with increasing contamination or enlargement of the electrode spacing, so that the available ignition energy can become ever smaller without readjusting the closing time for the object according to DE-PS 27 59 154 To have consequence.

Aufgabe der Erfindung ist es demgegenüber, die gattungsgemäße Zündeinrichtung so auszubilden, daß solche Zündkerzenbelastungen und darüber hinaus Temperatureffekte der Zündspule sowie herstellerspezifische Unterschiede der Zündspulen und Zündkerzen, d. h. des Zündkreises insgesamt, erkannt und ausgeglichen werden können.In contrast, the object of the invention is to design the generic ignition device in such a way that such spark plug loads and moreover temperature effects of the ignition coil and manufacturer-specific differences in the ignition coils and spark plugs, ie the ignition circuit as a whole, can be recognized and compensated for.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 genannten Merkmale gelöst.This object is achieved by the features mentioned in the characterizing part of claim 1.

Der Spitzenwert des im Zündkerzen- oder Sekundärstromkreis im Zündzeitpunkt oder kurz danach fließenden Stromes wird mittels einer Regelung der Schließdauer mit einem Sollwert verglichen. Ist der Spitzenwert infolge irgendeiner Ursache - Übersetzungsverhältnis oder Qualität der Zündspule, Kerzen- oder Kabelzustand, Verschmutzung, Kontaktabbrand usw. - höher oder niedriger als der vorgegebene, in diesem Ausführungsbeispiel von Motordrehzahl und Motorlast abhängige Sollwert, so wird die Schließdauer des Primärstromkreises kürzer oder länger, um so den Istwert wieder auf den Sollwert zu bringen.The peak value of the current flowing in the spark plug or secondary circuit at the time of ignition or shortly thereafter is compared with a target value by regulating the closing time. If the peak value is higher or lower than the specified target value, which in this exemplary embodiment is dependent on the engine speed and engine load, as a result of some cause - transmission ratio or quality of the ignition coil, spark plug or cable condition, soiling, contact wear, etc., the closing time of the primary circuit becomes shorter or longer to bring the actual value back to the setpoint.

Damit ist ein ausreichender Anfangs- oder Spitzenwert des Zündstromes gewährleistet, der für eine sichere Gemischzündung erforderlich ist, unabhängig vom weiteren Verlauf des Zündstromes.This ensures a sufficient initial or peak value of the ignition current, which is required for reliable mixture ignition, regardless of the further course of the ignition current.

Ein Ausführungsbeispiel der Erfindung wird anhand der Zeichnung näher erläutert.An embodiment of the invention is explained in more detail with reference to the drawing.

Die einzige Figur der Zeichnung zeigt ein Prinzip-Schaltbild der Zündeinrichtung. Die Primärwicklung 1 einer Zündspule SP wird über einen Schalttransistor 3 angesteuert. Der erste Anschluß der Sekundärwicklung 2 wird zu einer oder mehreren Zündkerzen ZK und der zweite Anschluß ist über einen Sensor 4 mit dem Minuspol einer nicht dargestellten Versorgungsspannungsquelle verbunden. Gestrichelt angedeutet ist eine weitere Sekundärwicklung von möglichen weiteren Zündspulen, deren zweite Anschlüsse auf den gemeinsamen Punkt P führen. Von diesem Punkt P führt eine Meßleitung 8 über einen Spitzenwert-Gleichrichter 14 zu einem Anschlußpin 12 eines Mikroprozessors 16.The only figure in the drawing shows a basic circuit diagram of the ignition device. The primary winding 1 of an ignition coil SP is controlled via a switching transistor 3. The first connection of the secondary winding 2 becomes one or more spark plugs ZK and the second connection is connected via a sensor 4 to the negative pole of a supply voltage source, not shown. A further secondary winding of possible further ignition coils, the second connections of which lead to the common point P, is indicated by dashed lines. From this point P, a measuring line 8 leads via a peak value rectifier 14 to a connection pin 12 of a microprocessor 16.

Bis hierher entspricht die Schaltung der bekannten Zündeinrichtung, von welcher die Erfindung ausgeht.Up to this point, the circuit corresponds to the known ignition device from which the invention is based.

Der Mikropozessor 16 weist softwaremäßig die Funktion einer Zündsteuerschaltung auf. Die wichtigsten Größen einer Zündsteuerung sind der Zündzeitpunkt ZZP und die Schließdauer SD des Primärstromkreises. Aus beiden Größen kann dann der Schließbeginn, bezogen auf die Kurbelwellenstellung der Brennkraftmaschine, bestimmt werden.The microprocessor 16 has the function of a software Ignition control circuit on. The most important variables of an ignition control are the ignition timing ZZP and the closing time SD of the primary circuit. The start of closing, based on the crankshaft position of the internal combustion engine, can then be determined from both variables.

Der Zündzeitpunkt wird in an sich bekannter Weise aus verschiedenen Betriebsparametern der Brennkraftmaschine ermittelt und interessiert hier nicht weiter.The ignition point is determined in a manner known per se from various operating parameters of the internal combustion engine and is of no further interest here.

Schließbeginn und Zündzeitpunkt bestimmen Anfang und Ende eines Steuerimpulses ST, der an die Basis des Schalttransistors 3 gelangt und diesen öffnet, so daß in der Primärwicklung 1 der Zündspule SP Strom fließen kann.The start and end of ignition determine the start and end of a control pulse ST which reaches the base of the switching transistor 3 and opens it, so that current can flow in the primary winding 1 of the ignition coil SP.

Der bei der Zündung eines bestimmten Zylinders x (Index x = 1 ... z, wobei z gleich der Zylinderzahl entspricht) auftretende Spitzenwert Ix des sekundärseitigen Zündstromes wird im Spitzenwert-Gleichrichter 14 gespeichert. Der Wert der Schließdauer besteht aus einem Vorsteuerwert V, der mit einem Anpaßwert fakx gewichtet wird.The peak value Ix of the ignition current on the secondary side that occurs when a specific cylinder x (index x = 1... Z, where z equals the number of cylinders) occurs is stored in the peak value rectifier 14. The value of the closing time consists of a pilot control value V, which is weighted with an adaptation value fakx.

In einem ersten Speicherberech 5 sind in einer Tabelle oder in einem Kennfeld mehrere Vorsteuerwerte V in Abhängigkeit von wenigstens einem Betriebsparameter, beispielsweise von der Motordrehzahl N, der Motorlast LM, der Motortemperatur T oder, wie zu diesem Ausführungsbeispiel, der Versorgungsspannung UB gespeichert.In a first memory calculation 5, a plurality of pilot control values V are stored in a table or in a characteristic diagram as a function of at least one operating parameter, for example the engine speed N, the engine load LM, the engine temperature T or, as in this exemplary embodiment, the supply voltage UB.

In einem zweiten Speicherbereich 6 sind in einem Kennfeld, abhängig von Motordrehzahl N und Motorlast (gemessen über die Luftmasse LM) Sollwerte S für den Spitzenwert des Zündstromes gespeichert.In a second memory area 6, setpoints S for the peak value of the ignition current are stored in a map, depending on the engine speed N and engine load (measured via the air mass LM).

Istwert Ix und Sollwert S werden zu einem geeigneten Zeitpunkt in eine erste Rechenschaltung 7 (diese und weitere Rechenschaltungen sind softwaremäßig im Rechenprogramm des Mikroprozessors 16 enthalten) übertragen, welche einen der Differenz beider Werte zugeordneten Anpaßwert fakx errechnet, der anschließend in einem Zwischenspeicher 9 abgelegt wird. Die Zuordnung kann additiv, multiplikativ oder anders erfolgen.Actual value Ix and setpoint S are transmitted at a suitable point in time to a first arithmetic circuit 7 (these and other arithmetic circuits are contained in the software of the microprocessor 16 in software), which one of the difference between the two Adapted value fakx calculated values, which is then stored in a buffer 9. The assignment can be additive, multiplicative or other.

Dieser Zwischenspeicher 9 weist für jeden Zylinder x der Brennkraftmaschine einen Speicherplatz auf, in den der errechnete Anpaßwert fakx zylinderselektiv abgelegt wird, bis er für den nächsten Zündvorgang dieses Zylinders weiterverarbeitet wird.This buffer 9 has a memory location for each cylinder x of the internal combustion engine, in which the calculated adaptation value fakx is stored in a cylinder-selective manner until it is further processed for the next ignition process of this cylinder.

Vor der Zwischenspeicherung wird in einem weiteren Programmschritt, in der Zeichnung dargestellt als eine weitere Rechenschaltung 11, noch geprüft, ob der errechnete Wert fakx größer als ein vorgegebener oberer (fakmax) oder kleiner als ein vorgegebener unterer Grenzwert fakmin ist. Falls dies zutrifft, wird fakx vor der Weiterverarbeitung auf diesen Grenzwert gesetzt und anschließend zwischengespeichert. Zur Bestimmung der nächsten Schließdauer SDx dieses Zylinders x werden der momentan gültige Vorsteuerwert V und der Anpaßwert fakx aus ihren Speichern 5 und 9 in eine zweite Rechenschaltung 10 übertragen und dort miteinander - beispielsweise additiv oder multiplikativ - zur Schließdauer SDx des Zylinders x verknüpft.Before the intermediate storage, a further program step, shown in the drawing as a further arithmetic circuit 11, is used to check whether the calculated value fakx is greater than a predetermined upper (fakmax) or less than a predetermined lower limit fakmin. If this is the case, fakx is set to this limit value before further processing and then buffered. In order to determine the next closing time SDx of this cylinder x, the currently valid pilot control value V and the adaptation value fakx are transferred from their memories 5 and 9 to a second arithmetic circuit 10 and there, for example additively or multiplicatively, linked to one another to form the closing time SDx of the cylinder x.

Um bei hohen Motordrehzahlen N nicht an die Grenze der Rechenkapazität des Mikroprozessors 16 zu stoßen - dieser hat eine Vielzahl von Berechnungen durchzuführen - ist in diesem Ausführungsbeispiel vorgesehen, die zylinderselektive Berechnung des Anpaßwertes fakx nur unterhalb eines vorgegebenen Motordrehzahl-Grenzwertes NG vorzunehmen und bei Erreichen oder Überschreiten dieses Grenzwertes nur den Anpaßwert fakl eines bestimmten ersten Zylinders (x = 1) zu berechnen und für alle weiteren Zylinder während eines kompletten Zündzyklus (2 Umdrehungen der Kurbelwelle bei einem VierTakt-Motor) mitzuverwenden.In order not to reach the limit of the computing capacity of the microprocessor 16 at high engine speeds N - this has to perform a large number of calculations - in this exemplary embodiment the cylinder-selective calculation of the adaptation value fakx is carried out only below a predetermined engine speed limit value NG and when or or is reached If this limit value is exceeded, only calculate the adaptation value fakl of a certain first cylinder (x = 1) and use it for all other cylinders during a complete ignition cycle (2 revolutions of the crankshaft in a four-stroke engine).

Dazu wird im Drehzahlbereich unterhalb des Motordrehzahl-Grenzwertes NG für jeden weiteren Zylinder (x = 2 ... z) ein Korrekturwert korx errechnet, welcher dem Verhältnis fakx/fakl zugeordnet ist, und in einem weiteren Speicherbereich 13 gespeichert. Diese Werte bleiben auch nach dem Abstellen des Motors gespeichert.For this purpose, a correction value korx is calculated in the speed range below the engine speed limit value NG for each additional cylinder (x = 2 ... z), which corresponds to the ratio fakx / fakl is assigned, and stored in a further memory area 13. These values remain saved even after the engine is switched off.

Oberhalb des Motordrehzahl-Grenzwertes NG bleiben diese Korrekturwerte unverändert und werden zur Bildung der Schließdauerwerte SDx mit herangezogen. Mit der Berechnung neuer Korrekturwerte wird erst nach einer vorgegebenen Zahl von Motorumdrehungen nach Motorstart begonnen.Above the engine speed limit value NG, these correction values remain unchanged and are used to form the closing duration values SDx. The calculation of new correction values is only started after a predetermined number of engine revolutions after engine start.

Somit werden die Schließdauern, wie folgt, berechnet:

Figure imgb0001

Vor der Ausgabe der auf diese Weise ermittelten Schließdauerwerte SDx wird in diesem Ausführungsbeispiel noch geprüft, ob diese größer als ein vorgegebener oberer (SDmax) oder kleiner als ein vorgegebener unterer Grenzwert (SDmin) sind. Diese Grenzwerte können vorzugsweise selbst von wenigstens einem Betriebsparameter abhängig gespeichert sein.The closing times are thus calculated as follows:
Figure imgb0001
Before the closing duration values SDx determined in this way are output, a check is also carried out in this exemplary embodiment to determine whether they are greater than a predetermined upper limit value (SDmax) or less than a predetermined lower limit value (SDmin). These limit values can preferably be stored as a function of at least one operating parameter.

Bei zu kleinem Schließdauerwert SD < SDmin ist eine sichere Zündung nicht gewährleistet und bei einem zu großen Schließdauerwert SD > SDmax besteht die Gefahr zu großer Erhitzung der Zündspule.If the closing duration value SD <SDmin is too small, reliable ignition is not guaranteed and if the closing duration value SD> SDmax is too high, there is a risk of the ignition coil becoming too hot.

Claims (7)

Zündeinrichtung für Brennkraftmaschinen, mit wenigstens einer Zündspule (SP) mit von der Primärwicklung (1) getrennter Sekundärwicklung (2), wobei der erste Anschluß der Sekundärwicklung (2) direkt zu einer oder über einen Verteiler zu mehreren Zündkerzen (ZK) führt und wobei der zweite Anschluß der Sekundärwicklung (2) der einen oder aller Zündspulen auf einen gemeinsamen Punkt (P) und von diesem über einen Sensor (4) zum Minuspol einer Versorgungsspannungsquelle führt, und mit einer von dem gemeinsamen Punkt (P) über einen Spitzenwert-Gleichrichter (14) zu einer in einem Mikroprozessor (16) enthaltenen Zündsteuerschaltung führenden Meßleitung (8),
dadurch gekennzeichnet, daß
die Zündsteuerschaltung - einen ersten Speicherbereich (5) aufweist, in welchem wenigstens einem Betriebsparamter zugeordnete Vorsteuerwerte (V) für die Schließdauer (SD) des Primärstromkreises der Zündspule (SP) gespeichert sind, - einen zweiten Speicherbereich (6) aufweist, in welchem von wenigstens einer Betriebsgröße (N, LM) der Brennkraftmaschine abhängige Sollwerte (S) für den Spitzenwert des Zündstromes (I) gespeichert sind, - eine erste Rechenschaltung (7) aufweist, welcher der im Spitzenwert-Gleichrichter (14) gespeicherte Istwert (I) des Zündstrom-Spitzenwertes und der Sollwert (S) zugeführt werden und welche daraus einen der Differenz von Soll- und Istwert zugeordneten Anpaßwert (fak) errechnet, welcher in einem dritten Speicherbereich (9) zwischengespeichert wird, und - eine zweite Rechenschaltung (10) aufweist, welche den Vorsteuerwert (V) abhängig von dem errechneten Anpaßwert (fak) verändert, wobei der veränderte Vorsteuerwert der Schließdauer (SD) entspricht. Ignition device for internal combustion engines, with at least one ignition coil (SP) with a secondary winding (2) separate from the primary winding (1), the first connection of the secondary winding (2) leading directly to one or via a distributor to a plurality of spark plugs (ZK) and the second connection of the secondary winding (2) which leads one or all ignition coils to a common point (P) and from there via a sensor (4) to the negative pole of a supply voltage source, and with one of the common point (P) via a peak value rectifier ( 14) to a measuring line (8) leading to an ignition control circuit contained in a microprocessor (16),
characterized in that
the ignition control circuit - has a first memory area (5), in which at least one operating parameter assigned pre-control values (V) for the closing period (SD) of the primary circuit of the ignition coil (SP) are stored, has a second memory area (6) in which setpoints (S) for the peak value of the ignition current (I) which are dependent on at least one operating variable (N, LM) of the internal combustion engine are stored, - A first arithmetic circuit (7) to which the actual value (I) of the ignition current peak value and the target value (S) stored in the peak value rectifier (14) are supplied, and which from this a matching value (fak.) assigned to the difference between the target value and the actual value ) which is temporarily stored in a third memory area (9), and - A second arithmetic circuit (10) which changes the pilot control value (V) depending on the calculated adaptation value (fak), the changed pilot control value corresponding to the closing time (SD). Zündeinrichtung nach Anspruch 1,
dadurch gekennzeichnet,
für den Anpaßwert (fak) ein oberer (fakmax) und ein unterer Grenzwert (fakmin) vorgegeben ist.Ignition device according to claim 1,
characterized,
an upper (fakmax) and a lower limit (fakmin) is specified for the adaptation value (fak). Zündeinrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß
ein Motordrehzahl-Grenzwert (NG) vorgegeben ist, unterhalb dessen der Anpaßwert (fakx) für Jeden Zylinder (x = 1 ... z) der Brennkraftmaschine getrennt, d. h. zylinderselektiv, ermittelt wird und oberhalb dessen er nur für einen bestimmten ersten Zylinder (x = 1) ermittelt, aber allen weiteren Zylindern (x = 2 ... z) zugeordnet wird und daß für alle weiteren Zylinder (x = 2 ... z) unterhalb des Motordrehzahl-Grenzwertes (NG) ein Korrekturwert (korx) berechnet und gespeichert wird, welcher dem Verhältnis fakx/fakl zugeordnet ist und welcher oberhalb des Motordrehzahl-Grenzwertes (NG) mit dem Anpaßwert (fakl) des bestimmten ersten Zylinders (x=1) additiv oder multiplikativ zu einem Anpaßwert (fakx = fakl * korx)
Figure imgb0002
 verknüpft wird.Ignition device according to claim 1,
characterized in that
an engine speed limit value (NG) is specified, below which the adaptation value (fakx) for each cylinder (x = 1 ... z) of the internal combustion engine is determined separately, that is to say cylinder-selectively, and above which it is only determined for a specific first cylinder (x = 1) is determined, but is assigned to all other cylinders (x = 2 ... z) and that a correction value (korx) is calculated for all other cylinders (x = 2 ... z) below the engine speed limit value (NG) and is stored, which is assigned to the ratio fakx / fakl and which is above the engine speed limit value (NG) with the adaptation value (fakl) of the determined first cylinder (x = 1) additive or multiplicative to an adaptation value (fakx = fakl * korx)
Figure imgb0002
 is linked. Zündeinrichtung nach Anspruch 3,
dadurch gekennzeichnet, daß
mit der Berechnung der Korrekturwerte (korx) für die weiteren Zylinder (x = 2 ... z) erst nach einer vorgegebenen Zahl von Motorumdrehungen nach Motorstart begonnen wird.Ignition device according to claim 3,
characterized in that
the calculation of the correction values (korx) for the other cylinders (x = 2 ... z) only begins after a predetermined number of engine revolutions after engine start. Zündeinrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß
ein Betriebsparamter für den Vorsteuerwert (V) die Versorgungsspannung (UB) ist.Ignition device according to claim 1,
characterized in that
an operating parameter for the pilot control value (V) is the supply voltage (UB). Zündeinrichtung nach Anspruch 1,
dadurch gekennzeichnet, daß
für den Wert (SDx) der Schließdauer ein oberer (SDmax) und ein unterer Grenzwert (SDmin) vorgegeben ist.Ignition device according to claim 1,
characterized in that
an upper (SDmax) and a lower limit (SDmin) is specified for the value (SDx) of the closing time. Zündeinrichtung nach Anspruch 6,
dadurch gekennzeichnet, daß
wenigstens einer der Grenzwerte (SDmax, SDmin) von wenigstens einem Betriebsparameter abhängig ist.Ignition device according to claim 6,
characterized in that
at least one of the limit values (SDmax, SDmin) is dependent on at least one operating parameter.
EP91121608A 1991-12-17 1991-12-17 Ignition device for internal combustion engine Expired - Lifetime EP0547258B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59105676T DE59105676D1 (en) 1991-12-17 1991-12-17 Ignition device for internal combustion engines.
EP91121608A EP0547258B1 (en) 1991-12-17 1991-12-17 Ignition device for internal combustion engine
US07/989,229 US5301649A (en) 1991-12-17 1992-12-11 Ignition device for internal combustion engines
JP4353859A JPH05272440A (en) 1991-12-17 1992-12-16 Ignition device for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91121608A EP0547258B1 (en) 1991-12-17 1991-12-17 Ignition device for internal combustion engine

Publications (2)

Publication Number Publication Date
EP0547258A1 true EP0547258A1 (en) 1993-06-23
EP0547258B1 EP0547258B1 (en) 1995-06-07

Family

ID=8207440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121608A Expired - Lifetime EP0547258B1 (en) 1991-12-17 1991-12-17 Ignition device for internal combustion engine

Country Status (4)

Country Link
US (1) US5301649A (en)
EP (1) EP0547258B1 (en)
JP (1) JPH05272440A (en)
DE (1) DE59105676D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1199470A2 (en) 2000-10-16 2002-04-24 Jenbacher Aktiengesellschaft Ignition system with an ignition coil
WO2011023852A1 (en) * 2009-08-28 2011-03-03 Wärtsilä Finland Oy Ignition control of spark ignited reciprocating combustion engine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114087A1 (en) * 1991-04-30 1992-11-05 Vogt Electronic Ag IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINES
DE10356629C5 (en) * 2003-12-01 2010-06-02 Krohne Meßtechnik GmbH & Co KG Method for operating an electronic measuring device
JP2015190393A (en) * 2014-03-28 2015-11-02 株式会社デンソー Ignition control device of engine
CN111878281B (en) * 2020-07-06 2021-10-08 一汽解放汽车有限公司 Spark plug aging monitoring method and system and storage medium

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921062A (en) * 1973-07-12 1975-11-18 Siemens Ag Circuit for measuring and storing peak values of ignition voltage in an internal combustion engine
DE2759154A1 (en) * 1977-12-31 1979-07-12 Bosch Gmbh Robert IGNITION DEVICE FOR COMBUSTION MACHINERY
EP0132985A2 (en) * 1983-07-21 1985-02-13 LUCAS INDUSTRIES public limited company Internal combustion engine ignition control
DE3447341A1 (en) * 1984-12-24 1986-06-26 Robert Bosch Gmbh, 7000 Stuttgart Method for controlling the dwell angle of a spark-ignition internal combustion engine
EP0229643A2 (en) * 1986-01-16 1987-07-22 Atlas Fahrzeugtechnik GmbH Ignition system for an internal combustion engine
EP0458993A1 (en) * 1990-05-28 1991-12-04 Siemens Aktiengesellschaft Knock control on a cylinder-by-cylinder basis in an internal combustion engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2145285B2 (en) * 1971-09-10 1976-01-29 Haisenko, Paul, 8000 München IC engine coil ignition system - has electronic current interrupting switches for control of current through coil primary and spark shortening
DE3129184A1 (en) * 1981-07-24 1983-02-03 Robert Bosch Gmbh, 7000 Stuttgart METHOD FOR CLOSING ANGLE CONTROL IN IGNITION SYSTEMS FOR INTERNAL COMBUSTION ENGINES
US4750467A (en) * 1986-09-11 1988-06-14 General Motors Corporation Internal combustion engine ignition system
IT1208855B (en) * 1987-03-02 1989-07-10 Marelli Autronica VARIABLE SPARK ENERGY IGNITION SYSTEM FOR INTERNAL COMBUSTION ENGINES PARTICULARLY FOR MOTOR VEHICLES
JP2878764B2 (en) * 1990-03-15 1999-04-05 株式会社日立製作所 Ignition energization time control device
DE59007572D1 (en) * 1990-08-06 1994-12-01 Siemens Ag Ignition device for internal combustion engines.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3921062A (en) * 1973-07-12 1975-11-18 Siemens Ag Circuit for measuring and storing peak values of ignition voltage in an internal combustion engine
DE2759154A1 (en) * 1977-12-31 1979-07-12 Bosch Gmbh Robert IGNITION DEVICE FOR COMBUSTION MACHINERY
EP0132985A2 (en) * 1983-07-21 1985-02-13 LUCAS INDUSTRIES public limited company Internal combustion engine ignition control
DE3447341A1 (en) * 1984-12-24 1986-06-26 Robert Bosch Gmbh, 7000 Stuttgart Method for controlling the dwell angle of a spark-ignition internal combustion engine
EP0229643A2 (en) * 1986-01-16 1987-07-22 Atlas Fahrzeugtechnik GmbH Ignition system for an internal combustion engine
EP0458993A1 (en) * 1990-05-28 1991-12-04 Siemens Aktiengesellschaft Knock control on a cylinder-by-cylinder basis in an internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1199470A2 (en) 2000-10-16 2002-04-24 Jenbacher Aktiengesellschaft Ignition system with an ignition coil
US6729317B2 (en) 2000-10-16 2004-05-04 Jenbacher Aktiengesellschaft Ignition system with an ignition coil
EP1199470A3 (en) * 2000-10-16 2006-01-18 Jenbacher Aktiengesellschaft Ignition system with an ignition coil
WO2011023852A1 (en) * 2009-08-28 2011-03-03 Wärtsilä Finland Oy Ignition control of spark ignited reciprocating combustion engine

Also Published As

Publication number Publication date
US5301649A (en) 1994-04-12
EP0547258B1 (en) 1995-06-07
JPH05272440A (en) 1993-10-19
DE59105676D1 (en) 1995-07-13

Similar Documents

Publication Publication Date Title
DE19655261B4 (en) Control device for an internal combustion engine
DE3872112T2 (en) METHOD AND DEVICE FOR DETECTING THE IONIZATION CURRENT IN AN INTERNAL COMBUSTION ENGINE IGNITION SYSTEM.
DE3609069C2 (en)
DE19581041C2 (en) Method for controlling the ignition timing of internal combustion engines
DE19647138C2 (en) Combustion state detector device for an internal combustion engine
DE10023835B4 (en) System and method for providing multiple charge ignition
DE3504039A1 (en) METHOD AND DEVICE FOR INFLUENCING THE KNOCK LEVEL OF AN INTERNAL COMBUSTION ENGINE
DE4133015A1 (en) IGNITION SYSTEM FOR COMBUSTION ENGINES
DE4133775C2 (en) Ignition device for an internal combustion engine
EP0640761A2 (en) Controllable ignition system
DE19733355A1 (en) Internal combustion engine state determination device
DE3014681C2 (en) Method and device for controlling the ignition point when starting an internal combustion engine
EP1045985A1 (en) Method and device for regulating power in ignition systems with a primary-side short-circuitiing switch
DE19924387B4 (en) Combustion state detector device for an internal combustion engine
EP0547258B1 (en) Ignition device for internal combustion engine
DE10252567B4 (en) Combustion state detection device for an internal combustion engine
DE19733356C2 (en) Combustion state detection device for an internal combustion engine
DE2530308A1 (en) METHOD AND DEVICE FOR LIMITING THE PULSE DURATION OF FUEL INJECTION CONTROL COMMANDS
DE3014680C2 (en) Method for controlling the ignition point of an internal combustion engine
EP0629775A1 (en) Method and device for controlling the smooth running of an internal combustion engine
DE4008540C2 (en)
DE4141698A1 (en) CLOSING TIME CONTROL METHOD
DE4305197C2 (en) Ignition device for a multi-cylinder engine
DE102006010807B4 (en) Circuit for detecting combustion-relevant variables
DE19648969A1 (en) Combustion state monitoring for IC engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): DE ES FR GB IT

17P Request for examination filed

Effective date: 19930819

17Q First examination report despatched

Effective date: 19941027

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19950607

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19950607

REF Corresponds to:

Ref document number: 59105676

Country of ref document: DE

Date of ref document: 19950713

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950821

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19971113

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19971219

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19980220

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981217

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991001