EP0443169A2 - Ignition signal distribution method in a high voltage static distribution system - Google Patents

Ignition signal distribution method in a high voltage static distribution system Download PDF

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Publication number
EP0443169A2
EP0443169A2 EP19900124713 EP90124713A EP0443169A2 EP 0443169 A2 EP0443169 A2 EP 0443169A2 EP 19900124713 EP19900124713 EP 19900124713 EP 90124713 A EP90124713 A EP 90124713A EP 0443169 A2 EP0443169 A2 EP 0443169A2
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European Patent Office
Prior art keywords
signals
ignition
address
flip
microcomputer
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EP19900124713
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German (de)
French (fr)
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EP0443169A3 (en
EP0443169B1 (en
Inventor
Egbert Dipl.-Phys. Perenthaler
Dirk Dipl.-Ing. Mentgen
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Robert Bosch GmbH
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Robert Bosch GmbH
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    • 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
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/02—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors
    • F02P7/03—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors with electrical means
    • F02P7/035—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of distributors with electrical means without mechanical switching means

Definitions

  • the invention relates to a distribution of the ignition signal in a system with a static high-voltage distribution according to the preamble of claim 1.
  • a known distribution of the ignition signal in a system with a static high-voltage distribution of an internal combustion engine contains a microcomputer for generating ignition signals and address signals, these determining the downstream ignition output stage to which the respective ignition signal is switched. Three address lines are provided, which are fed to a decoder, which outputs the drive signals to the ignition output stages as output signals.
  • the microcomputer determines the timing of the signals based on the information from a connected speed signal.
  • the microcomputer can lose synchronization during the ignition signal, so that the addresses on the address lines suddenly change as a result of the fault. This leads to misfires both in the ignition power stage controlled with the old address and in the ignition output stage controlled with the new address. At the ignition stage controlled with the old address is ignited at the wrong ignition point, namely too early, while the ignition at the ignition stage driven with the new address is completely wrong. These misfires can cause severe knocking, in extreme cases, engine damage.
  • the address signals generated by the microcomputer are fed via address lines to a flip-flop component which takes over the address signals during the open time of the ignition signals. Address changes during the open time do not lead to misfires anyway if the microcomputer resynchronizes within the open time.
  • These adopted ignition signals are stored during the closing time of the ignition signals and sent to the decoder as stored address signals. Via this temporary storage of the address signals during the closing time, incorrect address changes during the closing time, which are then not taken over by the flip-flop component, do not lead to misfires, since the address signals adopted during the open time are constantly present at the decoder during the closing time. Faults on the speed signal or changes in the address signals during the closing time therefore have no influence on the temporarily stored address signals on the decoder. This prevents misfires caused by changing addresses during the closing time, which prevents damaging engine knocking.
  • the address signals generated by the microcomputer precisely synchronized with the respective ignition signal from the flip-flop component by taking over and synchronizing with the rising edge of the respective ignition signal.
  • FIG. 1 shows the block diagram of an ignition signal distribution 1 with a microcomputer 2, a flip-flop component 3 and a decoder 4.
  • a speed signal D is connected to the microcomputer 2 as an input signal for a temporal assignment of the ignition signals to engine operation.
  • the ignition signals Z are supplied to both the flip-flop component 3 and the decoder 4.
  • address signals are generated by the microcomputer 2 via three address lines and fed to the flip-flop component 3 (triple D-type).
  • the address signals on the three address lines A0 ⁇ , A1, A2 are digitally output in a three code, for example 000; 100; 010; Etc.
  • the time diagram of FIG. 3 shows in more detail below the takeover and temporary storage of the data from the microcomputer 2 generated address signals explained by the flip-flop component 3.
  • the top line shows the time course of the address signals A0 ⁇ , A1, A2, whereby in analogy to the above function table of the decoder (instead of the values X0 ⁇ , X1, X2 A0 ⁇ , A1, A2 would have to be taken directly), the address signal 010 a control signal Y3, the address signal 011 a control signal Y4, the address signal 100 a control signal Y5 and the address signal 000 a control signal Y1 are assigned.
  • FIG. 3 shows the ignition signal distribution according to the invention with the takeover and temporary storage of the address signals A0 ⁇ , A1, A2 generated by the microcomputer in the flip-flop component 3. It can be seen from the time diagram in FIG. 3 that the address signals A0 ⁇ , A1, A2 generated by the microcomputer 1 are taken over and stored each time the ignition signals Z rise on the edges.
  • the temporarily stored address signals X0 ⁇ , X1, X2 are each held over the closing time and subsequent open time of the ignition signals Z and are constantly present at the decoder 4 during this time.

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  • 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)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

The invention relates to an ignition signal (Z) distributor in a high voltage static distribution system, in which according to the invention the address signals (address lines A0, A1, A2) which are generated by a microcomputer (2) and determine to which downstream ignition output stage the respective ignition signal (Z) is connected are fed to a flip-flop component (3). The flip-flop component (3) accepts these address signals (address lines A0, A1, A2) during the open time of the ignition signals (Z = 0) and stores them at least during the subsequent closed time of the ignition signals (Z = 1). Said signals are fed to a decoder (4) as stored and constantly present address signals (address lines X0, X1, X2), which decoder transmits the drive signals Y1 to Y8 to the ignition output stages as output signals. In this way, fault-induced address changes as a result of synchronisation errors of the microcomputer (2) during the closed time no longer lead to misfirings.

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine Verteilung des Zündsignals bei einem System mit ruhender Hochspannungsverteilung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a distribution of the ignition signal in a system with a static high-voltage distribution according to the preamble of claim 1.

Eine bekannte Verteilung des Zündsignals bei einem System mit ruhender Hochspannungsverteilung einer Brennkraftmaschine enthält einen Microcomputer zur Erzeugung von Zündsignalen und von Adressensignalen, wobei diese bestimmen, auf welche nachgeschaltete Zündendstufe das jeweilige Zündsignal geschaltet wird. Es sind drei Adreßleitungen vorgesehen, die einem Decoder zugeführt werden, der als Ausgangssignale die Ansteuersignale zu den Zündendstufen abgibt. Die zeitliche Zuordnung der Signale bestimmt der Microcomputer aufgrund der Informationen eines angeschlossenen Drehzahlsignals.A known distribution of the ignition signal in a system with a static high-voltage distribution of an internal combustion engine contains a microcomputer for generating ignition signals and address signals, these determining the downstream ignition output stage to which the respective ignition signal is switched. Three address lines are provided, which are fed to a decoder, which outputs the drive signals to the ignition output stages as output signals. The microcomputer determines the timing of the signals based on the information from a connected speed signal.

Bei an sich möglichen Störungen auf dem Drehzahlsignal kann der Microcomputer die Synchronisation während des anliegenden Zündsignals verlieren, so daß plötzlich die Adressen als Folge der Störung auf den Adreßleitungen wechseln. Dies führt zu Fehlzündungen sowohl bei der mit der alten Adresse als auch bei der mit der neuen Adresse angesteuerten Zündendstufe. Bei der mit der alten Adresse angesteuerten Zündendstufe erfolgt eine Zündung zu einem falschen Zündzeitpunkt, nämlich zu früh, während die Zündung an der mit der neuen Adresse angesteuerten Zündendstufe völlig daneben liegt. Diese Fehlzündungen können ein starkes Klopfen, im Extremfall einen Motorschaden, verursachen.In the event of possible faults on the speed signal, the microcomputer can lose synchronization during the ignition signal, so that the addresses on the address lines suddenly change as a result of the fault. This leads to misfires both in the ignition power stage controlled with the old address and in the ignition output stage controlled with the new address. At the ignition stage controlled with the old address is ignited at the wrong ignition point, namely too early, while the ignition at the ignition stage driven with the new address is completely wrong. These misfires can cause severe knocking, in extreme cases, engine damage.

Vorteile der ErfindungAdvantages of the invention

Erfindungsgemäß werden die vom Microcomputer erzeugten Adressensignale über Adreßleitungen einem Flip-Flop-Bauteil zugeführt, das die Adressensignale während der Offenzeit der Zündsignale übernimmt. Adreßwechsel während der Offenzeit führen ohnehin zu keinen Fehlzündungen, wenn sich der Microcomputer innerhalb der Offenzeit neu synchronisiert. Diese übernommenen Zündsignale werden während der Schließzeit der Zündsignale gespeichert und als gespeicherte Adressensignale an den Decoder abgegeben. Über diese Zwischenspeicherung der Adressensignale während der Schließzeit führen falsche Adreßwechsel während der Schließzeit, die dann vom Flip-Flop-Bauteil nicht übernommen werden, zu keinen Fehlzündungen, da die während der Offenzeit übernommenen Adressensignale konstant während der Schließzeit am Decoder anliegen. Störungen auf dem Drehzahlsignal bzw. Änderungen der Adressensignale während der Schließzeit haben somit auf die zwischengespeicherten und am Decoder anliegenden Adressensignale keinen Einfluß. Damit sind Fehlzündungen durch störungsbedingte Adressenwechsel während der Schließzeit ausgeschlossen, wodurch ein schädliches Motorklopfen verhindert wird.According to the invention, the address signals generated by the microcomputer are fed via address lines to a flip-flop component which takes over the address signals during the open time of the ignition signals. Address changes during the open time do not lead to misfires anyway if the microcomputer resynchronizes within the open time. These adopted ignition signals are stored during the closing time of the ignition signals and sent to the decoder as stored address signals. Via this temporary storage of the address signals during the closing time, incorrect address changes during the closing time, which are then not taken over by the flip-flop component, do not lead to misfires, since the address signals adopted during the open time are constantly present at the decoder during the closing time. Faults on the speed signal or changes in the address signals during the closing time therefore have no influence on the temporarily stored address signals on the decoder. This prevents misfires caused by changing addresses during the closing time, which prevents damaging engine knocking.

In einer Ausgestaltung der Erfindung ist es vorteilhaft, die vom Microcomputer erzeugten Adressensignale genau synchronisiert mit dem jeweiligen Zündsignal vom Flip-Flop-Bauteil dadurch übernehmen zu lassen, daß die Übernahme und Synchronisation mit der ansteigenden Flanke des jeweiligen Zündsignals erfolgt.In one embodiment of the invention, it is advantageous to have the address signals generated by the microcomputer precisely synchronized with the respective ignition signal from the flip-flop component by taking over and synchronizing with the rising edge of the respective ignition signal.

Zeichnungdrawing

Es zeigen:

Fig. 1
ein Blockschaltbild einer Zündsignalverteilung,
Fig. 2
ein Zeitdiagramm einer Zündsignalverteilung nach dem Stand der Technik ohne Zwischenspeicherung der Adressensignale,
Fig. 3
eine erfindungsgemäße Zündsignalverteilung mit Zwischenspeicherung der Adressensignale.
Show it:
Fig. 1
2 shows a block diagram of an ignition signal distribution,
Fig. 2
1 shows a timing diagram of an ignition signal distribution according to the prior art without intermediate storage of the address signals,
Fig. 3
an ignition signal distribution according to the invention with intermediate storage of the address signals.

In Fig. 1 ist das Blockschaltbild einer Zündsignalverteilung 1 dargestellt mit einem Microcomputer 2, einem Flip-Flop-Bauteil 3 und einem Decoder 4.1 shows the block diagram of an ignition signal distribution 1 with a microcomputer 2, a flip-flop component 3 and a decoder 4.

An den Microcomputer 2 ist als Eingangssignal für eine zeitliche Zuordnung der Zündsignale zum Motorbetrieb ein Drehzahlsignal D angeschlossen.A speed signal D is connected to the microcomputer 2 as an input signal for a temporal assignment of the ignition signals to engine operation.

Vom Microcomputer 2 wird ein Zündsignal Z in Abhängigkeit des Drehzahlsignals D erzeugt, in der Weise, daß in zeitlicher Reihenfolge etwa Rechtecksignale bzw. trapezförmige Signale mit Z = 1 über eine bestimmte Zeit, im folgenden als Schließzeit bezeichnet, abgegeben werden. Die dazischenliegende Zeit mit Z = 0 wird im folgenden als Offenzeit bezeichnet. Die Zündsignale Z werden sowohl dem Flip-Flop-Bauteil 3 als auch dem Decoder 4 zugeführt.An ignition signal Z is generated by the microcomputer 2 as a function of the speed signal D in such a way that square signals or trapezoidal signals with Z = 1 are emitted in a chronological order over a certain time, hereinafter referred to as the closing time. The time in between with Z = 0 is referred to below as the open time. The ignition signals Z are supplied to both the flip-flop component 3 and the decoder 4.

Weiter werden vom Microcomputer 2 über drei Adreßleitungen Adressensignale erzeugt und dem Flip-Flop-Bauteil 3 (triple D-type) zugeführt. Die Adressensignale auf den drei Adreßleitungen A0̸, A1, A2 werden in einem Dreiercode digital ausgegeben, zum Beispiel 000; 100; 010; etc.Furthermore, address signals are generated by the microcomputer 2 via three address lines and fed to the flip-flop component 3 (triple D-type). The address signals on the three address lines A0̸, A1, A2 are digitally output in a three code, for example 000; 100; 010; Etc.

Anhand des Zeitdiagramms der Fig. 3 wird weiter unten näher die Übernahme und Zwischenspeicherung der vom Microcomputer 2 erzeugten Adressensignale durch das Flip-Flop-Bauteil 3 erläutert.The time diagram of FIG. 3 shows in more detail below the takeover and temporary storage of the data from the microcomputer 2 generated address signals explained by the flip-flop component 3.

Vom Flip-Flop-Bauteil 3 führen weitere drei Adressenleitungen X0̸, X1, X2 zum Decoder 4, auf denen ebenfalls in einem Dreiercode die gespeicherten Adressensignale dem Decoder 4 zugeführt werden. Vom Decoder, der als "3 to 8 line Decoder" ausgeführt ist, werden die zwischengespeicherten Adreßsignale in acht Ansteuersignale Y1 bis Y8 zu den Zündendstufen für beispielsweise einen 8-Zylindermotor umgesetzt. Nachfolgend wird eine Funktionstabelle des Decoders angegeben:

Figure imgb0001
From the flip-flop component 3, another three address lines X0̸, X1, X2 lead to the decoder 4, on which the stored address signals are also supplied to the decoder 4 in a three-code. From the decoder, which is designed as a "3 to 8 line decoder", the temporarily stored address signals are converted into eight control signals Y1 to Y8 to the ignition output stages for, for example, an 8-cylinder engine. A function table of the decoder is given below:
Figure imgb0001

In Fig. 2 ist ein Zeitdiagramm einer Zündsignalverteilung ohne die erfindungsgemäße Zwischenspeicherung der Adressensignale dargestellt:2 shows a time diagram of an ignition signal distribution without the buffering of the address signals according to the invention:

In der obersten Zeile ist der Zeitverlauf der Adressensignale A0̸, A1, A2 dargestellt, wobei in Analogie zu der vorstehenden Funktionstabelle des Decoders (anstelle der Werte X0̸, X1, X2 wäre hier direkt A0̸, A1, A2 zu nehmen), dem Adressensignal 010 ein Ansteuersignal Y3, dem Adressensignal 011 ein Ansteuersignal Y4, dem Adressensignal 100 ein Ansteuersignal Y5 und dem Adressensignal 000 ein Ansteuersignal Y1 zugeordnet sind. Etwa im zeitlichen Mittel der Adressensignale wird jeweils das Zündsignal Z = 1 erzeugt, das entsprechend über die zugeordnete Adresse zeitgleich als Ansteuersignal Y3, Y4, etc. auftritt. Die Zündung selbst erfolgt beim Flankenwechsel, wenn das entsprechende Ansteuersignal wieder auf 0 zurückfällt, Y1...Y8 = 1 → 0. Die Ansteuersignale Y1...Y8 sind nur 1 bei Z = 1, das heißt, während der oben definierten Schließzeit. Bei Z = 0 sind alle Y1...Y8 gleich 0, entsprechend der oben definierten Offenzeit.The top line shows the time course of the address signals A0̸, A1, A2, whereby in analogy to the above function table of the decoder (instead of the values X0̸, X1, X2 A0̸, A1, A2 would have to be taken directly), the address signal 010 a control signal Y3, the address signal 011 a control signal Y4, the address signal 100 a control signal Y5 and the address signal 000 a control signal Y1 are assigned. Approximately on average over time of the address signals, the ignition signal Z = 1 is generated, which occurs simultaneously as the control signal Y3, Y4, etc. via the assigned address. The ignition itself occurs when the edge changes, when the corresponding control signal drops back to 0, Y1 ... Y8 = 1 → 0. The control signals Y1 ... Y8 are only 1 at Z = 1, that is, during the closing time defined above. With Z = 0, all Y1 ... Y8 are equal to 0, corresponding to the open time defined above.

In der ersten Zeile der Adressensignale A0̸, A1, A2 ist während der richtigen Ansteuerung mit dem Signal 100 eine Störung S aufgetreten, die einen Adressenwechsel zum Ansteuersignal 000 verursacht hat. Dies führt dazu, daß beim Auftreten der Störung S das Ansteuersignal Y5 = 0 wird und über den damit verbundenen Flankenwechsel eine Frühzündung und damit Fehlzündung FZ ausgelöst wird. Zugleich tritt ein Ansteuersignal durch die falsche Zuordnung bei Y1 = 1 auf, das beim Flankenwechsel zu Y1 = 0 eine Fehlzündung FZ in einem völlig ungeeigneten Zeitpunkt des zugeordneten Zylinders erzeugt.In the first line of the address signals A0̸, A1, A2 a fault S has occurred during the correct activation with the signal 100, which has caused an address change to the activation signal 000. This leads to the fact that when the fault S occurs, the control signal Y5 = 0 and a premature ignition and thus misfire FZ is triggered via the associated edge change. At the same time, a control signal occurs due to the incorrect assignment at Y1 = 1, which generates a misfire FZ at a completely unsuitable point in time of the assigned cylinder when the edge changes to Y1 = 0.

In Fig. 3 ist dagegen die erfindungsgemäße Zündsignalverteilung mit der Übernahme und Zwischenspeicherung der vom Microcomputer erzeugten Adressensignale A0̸, A1, A2 im Flip-Flop-Bauteil 3 angegeben. Aus dem Zeitdiagramm der Fig. 3 ist zu entnehmen, daß die Übernahme und Speicherung der vom Microcomputer 1 erzeugten Adressensignale A0̸, A1, A2 jeweils beim Flankenanstieg der Zündsignale Z erfolgt. Die zwischengespeicherten Adressensignale X0̸, X1, X2 werden jeweils über die Schließzeit und anschließende Offenzeit der Zündsignale Z gehalten und liegen über diese Zeit konstant am Decoder 4 an.3, on the other hand, shows the ignition signal distribution according to the invention with the takeover and temporary storage of the address signals A0̸, A1, A2 generated by the microcomputer in the flip-flop component 3. It can be seen from the time diagram in FIG. 3 that the address signals A0̸, A1, A2 generated by the microcomputer 1 are taken over and stored each time the ignition signals Z rise on the edges. The temporarily stored address signals X0̸, X1, X2 are each held over the closing time and subsequent open time of the ignition signals Z and are constantly present at the decoder 4 during this time.

Auch in Fig. 3 ist die gleiche Störung S im Zeitbereich des Adressensignals 100 der Adressensignale A0̸, A1, A2 angegeben. Durch die bereits in das Flip-Flop-Bauteil übernommene und abgespeicherte Adresse 100 ist die Störung S zum Adressenwechsel 000 für den Decoder 4 abgeblockt, so daß hier das richtige Ansteuersignal Y5 über die gesamte Schließzeit angesteuert wird und beim Flankenwechsel zu Y5 = 0 die Zündung zum richtigen Zeitpunkt erfolgt.3 also shows the same disturbance S in the time domain of the address signal 100 of the address signals A0̸, A1, A2. By means of the one already taken over and stored in the flip-flop component Address 100 blocks the fault S for address change 000 for decoder 4, so that here the correct control signal Y5 is controlled over the entire closing time and the ignition occurs at the correct time when the edge changes to Y5 = 0.

Claims (3)

Verteilung des Zündsignals bei einem System mit ruhender Hochspannungsverteilung, mit einem Microcomputer (µC) zur Erzeugung von Zündsignalen (Z) und von Adressensignalen (Adreßleitungen A0̸, A1, A2), die bestimmen auf welche nachgeschaltete Zündendstufe das jeweilige Zündsignal (Z) geschaltet ist und mit einem Decoder (4), der als Ausgangssignale die Ansteuersignale (Y1 bis Y8) zu den Zündendstufen abgibt, dadurch gekennzeichnet, daß die vom Microcomputer (2) erzeugten Adressensignale (Adreßleitungen A0̸, A1, A2) einem Flip-Flop-Bauteil (3) zugeführt werden und das Flip-Flop-Bauteil (3) die Adressensignale (Adreßleitungen A0̸, A1, A2) während der Offenzeit der Zündsignale (Z = 0) übernimmt und diese wenigstens während der anschließenden Schließzeit der Zündsignale (Z = 1) speichert und als gespeicherte, konstant anliegende Adressensignale (Adreßleitungen X0̸, X1, X2) an den Decoder (4) abgibt.Distribution of the ignition signal in a system with static high-voltage distribution, with a microcomputer (µC) for generating ignition signals (Z) and address signals (address lines A0̸, A1, A2), which determine which downstream ignition power stage the respective ignition signal (Z) is connected to and with a decoder (4) which outputs the control signals (Y1 to Y8) to the ignition output stages, characterized in that the address signals (address lines A0̸, A1, A2) generated by the microcomputer (2) are a flip-flop component (3 ) are supplied and the flip-flop component (3) takes over the address signals (address lines A0̸, A1, A2) during the open time of the ignition signals (Z = 0) and stores them at least during the subsequent closing time of the ignition signals (Z = 1) and as stored, constantly present address signals (address lines X0̸, X1, X2) to the decoder (4). Verteilung des Zündsignals nach Anspruch 1, dadurch gekennzeichnet, daß drei Adreßleitungen (A0̸, A1, A2) vom Microcomputer zum Flip-Flop-Bauteil (3) und entsprechend drei Adreßleitungen (X0̸, X1, X2) vom Flip-Flop-Bauteil (3) zum Decoder (4) verwendet sind.Distribution of the ignition signal according to Claim 1, characterized in that three address lines (A0̸, A1, A2) from the microcomputer to the flip-flop component (3) and correspondingly three address lines (X0̸, X1, X2) from the flip-flop component (3 ) are used for the decoder (4). Verteilung des Zündsignals nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die vom Microcomputer (2) erzeugten Adressensignale (Adreßleitungen A0̸, A1, A2) vom Flip-Flop-Bauteil (3) mit der steigenden Flanke des jeweiligen Zündsignals (Z) übernommen werden.Distribution of the ignition signal according to Claim 1 or 2, characterized in that the address signals (address lines A0̸, A1, A2) generated by the microcomputer (2) are taken over by the flip-flop component (3) with the rising edge of the respective ignition signal (Z) .
EP90124713A 1990-02-22 1990-12-19 Ignition signal distribution method in a high voltage static distribution system Expired - Lifetime EP0443169B1 (en)

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DE4005544 1990-02-22
DE4005544A DE4005544A1 (en) 1990-02-22 1990-02-22 DISTRIBUTION OF THE IGNITION SIGNAL IN A SYSTEM WITH A RESISTANT HIGH VOLTAGE DISTRIBUTION

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EP0443169A2 true EP0443169A2 (en) 1991-08-28
EP0443169A3 EP0443169A3 (en) 1993-05-12
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US6115665A (en) * 1993-05-07 2000-09-05 Ford Motor Company Memory efficient computer system and method for controlling an automotive ignition system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026429A1 (en) * 1979-10-01 1981-04-08 Jenbacher Werke AG Ignition system for multicylinder internal-combustion engines
EP0113894A2 (en) * 1982-12-16 1984-07-25 Mitsubishi Denki Kabushiki Kaisha Ignition circuit for an internal combustion engine
EP0138494A2 (en) * 1983-09-28 1985-04-24 Mitsubishi Denki Kabushiki Kaisha Ignition apparatus for internal combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0026429A1 (en) * 1979-10-01 1981-04-08 Jenbacher Werke AG Ignition system for multicylinder internal-combustion engines
EP0113894A2 (en) * 1982-12-16 1984-07-25 Mitsubishi Denki Kabushiki Kaisha Ignition circuit for an internal combustion engine
EP0138494A2 (en) * 1983-09-28 1985-04-24 Mitsubishi Denki Kabushiki Kaisha Ignition apparatus for internal combustion engines

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DE59010199D1 (en) 1996-04-18
EP0443169A3 (en) 1993-05-12
JPH04219466A (en) 1992-08-10
JP3043442B2 (en) 2000-05-22
EP0443169B1 (en) 1996-03-13
DE4005544A1 (en) 1991-08-29

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