EP0587576A1 - Ignition system for internal combustion engines with high-tension switches. - Google Patents

Ignition system for internal combustion engines with high-tension switches.

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Publication number
EP0587576A1
EP0587576A1 EP92907664A EP92907664A EP0587576A1 EP 0587576 A1 EP0587576 A1 EP 0587576A1 EP 92907664 A EP92907664 A EP 92907664A EP 92907664 A EP92907664 A EP 92907664A EP 0587576 A1 EP0587576 A1 EP 0587576A1
Authority
EP
European Patent Office
Prior art keywords
capacitor
ignition
ignition system
voltage
coil
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
EP92907664A
Other languages
German (de)
French (fr)
Other versions
EP0587576B1 (en
Inventor
Manfred Vogel
Werner Herden
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0587576A1 publication Critical patent/EP0587576A1/en
Application granted granted Critical
Publication of EP0587576B1 publication Critical patent/EP0587576B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
    • 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
    • F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
    • F02P15/08—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
    • 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
    • F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
    • F02P15/12—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having means for strengthening spark during starting

Definitions

  • the invention relates to an ignition system according to the type of the main claim, as is known for example from DE-OS 37 31 393.
  • high-voltage switches are used, which are preferably arranged on the secondary side in the spark plug connector.
  • Tilting diode cascades are used as high-voltage switching elements, 10 to 50 tipping diode elements being stacked on top of one another according to the dielectric strength of a single tipping diode and depending on the desired tipping voltage.
  • Such a high-voltage semiconductor switch which suddenly changes from the blocking to the conducting state, makes it possible to practically eliminate the effects of shunts on the spark plug. Because of their inherent capacitance, long ignition lines behind the breakover diode cascade have a disadvantageous effect on the division effect of the breakover diode cascade, which is why the high-voltage semiconductor switch is preferably arranged in the plug connector.
  • the arrangement according to the invention with the characterizing features of the main claim has the advantage that, regardless of the installation location of the high-voltage semiconductor switch in the form of a tilting diode cascade, an additional capacitor between the ignition coil and high-voltage semiconductor switch is arranged on the secondary side in parallel with the secondary winding, so that even with a low system capacity ⁇ a sufficiently high voltage jump at the spark plug is achieved.
  • the measures listed in the subclaims enable advantageous further developments and improvements of the ignition system specified in the main claim. It is particularly advantageous to use a ceramic capacitor which is temperature-dependent in such a way that the amplification of the splitting effect is only effective when cold starting, and the capacitance of the capacitor decreases sharply during operation due to heating. As a result, the increased energy requirement of the ignition system and thus the increased load on the ignition coil by the capacitor is limited to the very short cold start phase.
  • FIG. 1 shows the basic structure of an ignition system
  • FIG. 2 shows an ignition system with double spark coils
  • FIGS. 3a and 3b show possibilities for the installation location of the high-voltage semiconductor switch
  • FIG. 4 shows an ignition system with a capacitor that can be switched off on the secondary side.
  • FIG. 1 shows the basic structure of an ignition system with an ignition coil 1, the primary winding 2 of which is connected via an ignition transistor 3 to a voltage supply U, for example to the battery, not shown, of a motor vehicle.
  • the ignition transistor 3 is controlled in a known manner via a control terminal 4.
  • the secondary winding 5 is connected to ground potential on the one hand and on the other hand via a breakover diode cascade 6, which acts as a high-voltage semiconductor switch, and an interference suppressor 7 to the spark plug 8.
  • the ignition system shown in Figure 1 works as follows.
  • FIG. 2 shows a structure similar to that of FIG. 1, but a double spark coil is used here.
  • a trigger diode cascade 6 is assigned to each end of the ignition coil, the distinction being made here by corresponding indices a and b.
  • These breakover diode cascade are assigned to the coil ends with different polarity.
  • the capacitor 9 for amplifying the steepening effect is connected in parallel with the secondary winding 5 in front of the breakover diode cascades 6a and 6b. Similar to FIG. 1, the breakover cascades and the capacitor are arranged in the ignition coil housing 10 in this embodiment.
  • FIGS. 3a and 3b show a structure similar to that in FIG. 1, the capacitor 9 being arranged in the ignition coil housing in both cases.
  • the Kippdioden- * cascade in the plug cap 11 and ange ⁇ in Figure 3b in the candle 12 assigns. This has the advantage that the self-capacitance of the ignition line can also be used for the division effect.
  • FIG. 4 also shows a construction similar to that of FIG. 1, but here a high-voltage switch 13 is arranged in series with the capacitor 9, parallel to the secondary winding 5.
  • This high-voltage switch can be a light-triggerable high-voltage switch, for example.
  • the capacitor 9 in the ignition coil housing and the high-voltage breakover diode, for example in the distributor rotor, the distributor middle plug, in the ignition line between the ignition coil and distributor or directly in the ignition coil.

Abstract

Il est proposé un système d'allumage pour moteur à combustion interne comportant des composants à semi-conducteurs disposés dans le circuit secondaire, avec au moins un condensateur, lesquels ont un effet d'élévation de la tension d'allumage. Les composants à semi-conducteurs sont de préférence des diodes à quatre couches montées en cascade (6), lesquelles assurent que la tension d'allumage est transmise abruptement à la bougie d'allumage (8) seulement après qu'une valeur prédéterminable ait été atteinte. Un effet d'élévation plus important peut alors être obtenu si du côté secondaire un condensateur (9) est disposé, parallèlement à l'enroulement secondaire, entre l'enroulement secondaire (5) et le montage en cascade (6) des diodes à quatre couches.An ignition system for an internal combustion engine is proposed comprising semiconductor components arranged in the secondary circuit, with at least one capacitor, which have an effect of raising the ignition voltage. The semiconductor components are preferably cascaded four-layer diodes (6), which ensure that the ignition voltage is transmitted abruptly to the spark plug (8) only after a predetermined value has been reached. A higher elevation effect can then be obtained if on the secondary side a capacitor (9) is arranged, parallel to the secondary winding, between the secondary winding (5) and the cascade arrangement (6) of the diodes with four layers.

Description

Zündanlagen für Brennkraftmaschinen mit HochspannunαsSchalterIgnition systems for internal combustion engines with high voltage switch
Stand der TechnikState of the art
Die Erfindung geht aus von einer Zündanlage nach der Gattung des Hauptanspruchs, wie sie beispielsweise aus der die DE-OS 37 31 393 bekannt ist.The invention relates to an ignition system according to the type of the main claim, as is known for example from DE-OS 37 31 393.
Bei der genannten Zündanlage kommen Hochspannungsschalter zum Ein¬ satz, die sekundärseitig vorzugsweise im Zündkerzenstecker ange¬ ordnet sind. Als Hochspannungsschaltelemente werden Kippdioden¬ kaskaden verwendet, wobei nach Spannungsfestigkeit einer Einzelkipp¬ diode und je nach gewünschter Kippspannung 10 bis 50 Kippdioden-Ele¬ mente übereinandergestapelt werden. Ein solcher Hochspannungs-Halb- leiterschalter, der schlagartig vom sperrenden in den leitenden Zu¬ stand übergeht, ermöglicht es, die Einflüsse von Nebenschlüssen an der Zündkerze praktisch zu eliminieren. Aufgrund ihrer Eigenkapa¬ zität wirken sich lange Zündleitungen hinter der Kippdiodenkaskade nachteilig auf den Aufsteilerungseffekt der Kippdiodenkaskade aus, weshalb man den Hochspannungs-Halbleiterschalter vorzugsweise im Kerzenstecker anordnet. Im Gegensatz dazu wirken sich relativ lange Leitungen vor der Kippdiodenkaskade positiv aus, da sie durch ihre Eigenkapazität beim leitendwerden des Hochspannungs-Halbleiter- schalters schlagartig die gespeicherte Energie abgeben. Kommen solche Halbleiterschaltelemente bei Doppelfunkenspulen zum Einsatz, so muß man aufgrund der sekundärseitigen Spannungsaufteilung die Kippspannung der Hochspannungs-Halbleiterschalter so gering halten, daß die Kippspannung auf jeden Fall erreicht wird. Allerdings hat das den Nachteil, daß bei einer Kippspannung deutlich unter 11 kV der Aufsteilerungseffekt kaum noch wirksam ist.In the ignition system mentioned, high-voltage switches are used, which are preferably arranged on the secondary side in the spark plug connector. Tilting diode cascades are used as high-voltage switching elements, 10 to 50 tipping diode elements being stacked on top of one another according to the dielectric strength of a single tipping diode and depending on the desired tipping voltage. Such a high-voltage semiconductor switch, which suddenly changes from the blocking to the conducting state, makes it possible to practically eliminate the effects of shunts on the spark plug. Because of their inherent capacitance, long ignition lines behind the breakover diode cascade have a disadvantageous effect on the division effect of the breakover diode cascade, which is why the high-voltage semiconductor switch is preferably arranged in the plug connector. In contrast, relatively long lines in front of the breakover diode cascade have a positive effect, since their own capacitance suddenly releases the stored energy when the high-voltage semiconductor switch becomes conductive. Come If such semiconductor switching elements are used in double-spark coils, the breakdown voltage of the high-voltage semiconductor switch must be kept so low due to the secondary voltage division that the breakover voltage is reached in any case. However, this has the disadvantage that the breakdown effect is hardly effective at a breakdown voltage well below 11 kV.
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Anordnung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, daß unabhängig vom Einbauort des Hochspannungs-Halbleiterschaltes in Form einer Kipp- diodenkaskade ein zusätzlicher Kondensator zwischen Zündspule und Hochspannungs-Halbleiterschalter parallel zur Sekundärwicklung sekundärseitig angeordnet ist, so daß auch bei geringer Systemkapa¬ zität ein ausreichend hoher Spannungssprung an der Zündkerze er¬ reicht wird.The arrangement according to the invention with the characterizing features of the main claim has the advantage that, regardless of the installation location of the high-voltage semiconductor switch in the form of a tilting diode cascade, an additional capacitor between the ignition coil and high-voltage semiconductor switch is arranged on the secondary side in parallel with the secondary winding, so that even with a low system capacity ¬ a sufficiently high voltage jump at the spark plug is achieved.
Durch die in den ünteransprüchen aufgeführten Maßnahmen sind vor¬ teilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Zündanlage möglich. Besonders vorteilhaft ist es, einen keramischen Kondensator zu verwenden, der temperaturabhängig ist in der Weise, daß die Verstärkung des Aufsteilerungseffektes nur bei Kaltstart wirksam wird, beim Betrieb die Kapazität des Kondensators durch Erwärmung stark abnimmt. Dadurch wird der erhöhte Energiebe¬ darf der Zündanlage und damit die erhöhte Belastung der Zündspule durch den Kondensator auf die sehr kurze Kaltstartphase begrenzt.The measures listed in the subclaims enable advantageous further developments and improvements of the ignition system specified in the main claim. It is particularly advantageous to use a ceramic capacitor which is temperature-dependent in such a way that the amplification of the splitting effect is only effective when cold starting, and the capacitance of the capacitor decreases sharply during operation due to heating. As a result, the increased energy requirement of the ignition system and thus the increased load on the ignition coil by the capacitor is limited to the very short cold start phase.
Ein weiterer Vorteil ist die Verwendung eines Kondensators bei Doppelfunkenspulen, hier muß trotz der Zuordnung zweier Zündkerzen zu einer Spule nur ein Kondensator eingebaut werden, was zu einer Material und damit Kosteneinsparung führt. 3 -Another advantage is the use of a capacitor for double-spark coils. Here, despite the assignment of two spark plugs to one coil, only one capacitor has to be installed, which leads to material and thus cost savings. 3 -
Letztendlich sei noch erwähnt, daß es vorteilhaft ist, diesen Kondensator wahlweise zu oder abschaltbar zu machen. Man verstärkt also diesen AufSteigerungseffekt nur dann, wenn es systembedingt notwendig ist, zum Beispiel beim Kaltstart, insbesondere bei Konden¬ satoren ohne ausreichende Temperaturabhängigkeit.Finally, it should also be mentioned that it is advantageous to make this capacitor either switchable or switchable. This increase effect is therefore only increased if it is necessary due to the system, for example during a cold start, particularly in the case of capacitors without sufficient temperature dependence.
Zeichnungdrawing
Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen Figur 1 den Prinzipaufbau einer Zündanlage, Figur 2 eine Zündanlage mit Doppelfunkenspulen, Figur 3a und 3b Möglichkeiten des Einbau¬ ortes des Hochspannungs-Halbleiterschalters und Figur 4 eine Zündan¬ lage mit sekundärseitig abschaltbarem Kondensator.Embodiments of the invention are shown in the drawing and explained in more detail in the following description. FIG. 1 shows the basic structure of an ignition system, FIG. 2 shows an ignition system with double spark coils, FIGS. 3a and 3b show possibilities for the installation location of the high-voltage semiconductor switch, and FIG. 4 shows an ignition system with a capacitor that can be switched off on the secondary side.
Beschreibung der AusführungsbeispieleDescription of the embodiments
Figur 1 zeigt den Prinzipaufbau einer Zündanlage mit einer Zündspule 1, deren Primärwicklung 2 über einen Zündtransistor 3 an eine Spannungsversorgung U , beispielsweise an die nicht dargestellte Batterie eines Kraftfahrzeuges angeschlossen ist. Der Zündtransistor 3 wird in bekannter Weise über eine Steuerklemme 4 angesteuert. Die Sekundärwicklung 5 ist einerseits mit Massepotential und anderer¬ seits über eine Kippdiodenkaskade 6, die als Hochspannungs-Halb- leiterschalter wirkt, und einen Entstörwiderstand 7 mit der Zünd¬ kerze 8 verbunden. Die in Figur 1 dargestellte Zündanlage arbeitet folgendermaßen. Durch Abschalten des durch die Primärwicklung 2 der Zündspule 1 fließenden Stromes mittels des Zundtransistors 3 wird in der Sekundärwicklung 5 zum Zündzeitpunkt eine Spannung induziert, die bei Erreichen der durch die Kippdiodenkaskade 6 vorgegebene Kippspannung ein Durchschalten auf die Zündkerze 8 bewirkt, was zum Auslösen des Zündfunkens führt. Ein sekundärseitiger, -parallel zur Sekundärwicklung angeordneter Kondensator 9 wird, solange die Kipp¬ diodenkaskade 6 sperrt, geladen. Diese Kapazität wird beim Durch¬ schalten der Kippdiodenkaskade 6 freigesetzt und führt so zu einer Verstärkung des Aufsteilerungseffekts. In dieser Figur 1 sind die Kippdiodenkaskade 6 und der Kondensator 9 im Gehäuse 10 der Zünd¬ spule angeordnet, wobei das Gehäuse in dieser Figur symbolhaft gestrichelt dargestellt ist.FIG. 1 shows the basic structure of an ignition system with an ignition coil 1, the primary winding 2 of which is connected via an ignition transistor 3 to a voltage supply U, for example to the battery, not shown, of a motor vehicle. The ignition transistor 3 is controlled in a known manner via a control terminal 4. The secondary winding 5 is connected to ground potential on the one hand and on the other hand via a breakover diode cascade 6, which acts as a high-voltage semiconductor switch, and an interference suppressor 7 to the spark plug 8. The ignition system shown in Figure 1 works as follows. By switching off the current flowing through the primary winding 2 of the ignition coil 1 by means of the ignition transistor 3, a voltage is induced in the secondary winding 5 at the time of ignition, which, when the breakover voltage predetermined by the breakover diode cascade 6 is reached, causes a switching through to the spark plug 8, which triggers the ignition spark leads. A secondary, parallel to Secondary winding arranged capacitor 9 is charged as long as the Kipp¬ diode cascade 6 blocks. This capacitance is released when the breakover diode cascade 6 is switched through and thus leads to an intensification of the division effect. In this FIG. 1, the breakover diode cascade 6 and the capacitor 9 are arranged in the housing 10 of the ignition coil, the housing being symbolically shown in dashed lines in this figure.
Figur 2 zeigt einen ähnlichen Aufbau wie Figur 1, wobei hier jedoch eine Doppelfunkenspule benutzt wird. Bei dieser Ausführung ist jedem Ende der Zündspule eine Kippdiodenkaskade 6 zugeordnet, wobei die Unterscheidung hier durch entsprechend Indizes a und b erfolgt. Diese Kippdiodenkaskade sind den Spulenenden mit unterschiedlicher Polarität zugeordnet. Der Kondensator 9 zur Verstärkung des Auf- steilerungseffektes ist parallel zur Sekundärwicklung 5 vor die Kippdiodenkaskaden 6a und 6b geschaltet. Ähnlich der Figur 1 sind auch bei dieser Ausführungs orm die Kippdiodenkaskaden und der Kondensator im Zündspulengehäuse 10 angeordnet.FIG. 2 shows a structure similar to that of FIG. 1, but a double spark coil is used here. In this embodiment, a trigger diode cascade 6 is assigned to each end of the ignition coil, the distinction being made here by corresponding indices a and b. These breakover diode cascade are assigned to the coil ends with different polarity. The capacitor 9 for amplifying the steepening effect is connected in parallel with the secondary winding 5 in front of the breakover diode cascades 6a and 6b. Similar to FIG. 1, the breakover cascades and the capacitor are arranged in the ignition coil housing 10 in this embodiment.
Figur 3a und 3b zeigen einen ähnlichen Aufbau wie in Figur 1, wobei in beiden Fällen der Kondensator 9 im Zündspulengehäuse angeordnet ist. Im Unterschied zu Figur 1 ist bei Figur 3a die Kippdioden- * kaskade im Kerzenstecker 11 und bei Figur 3b in der Kerze 12 ange¬ ordnet. Das hat den Vorteil, daß zum Aufsteilerungseffekt die Eigen¬ kapazität der Zündleitung mit herangezogen werden kann.FIGS. 3a and 3b show a structure similar to that in FIG. 1, the capacitor 9 being arranged in the ignition coil housing in both cases. In contrast to Figure 1 is in Figure 3a, the Kippdioden- * cascade in the plug cap 11 and ange¬ in Figure 3b in the candle 12 assigns. This has the advantage that the self-capacitance of the ignition line can also be used for the division effect.
Figur 4 zeigt ebenfalls einen Aufbau ähnlich der Figur 1, wobei jedoch hier parallel zur Sekundärwicklung 5 ein Hochspannungs¬ schalter 13 in Reihe zum Kondensator 9 angeordnet ist. Dieser Hoch¬ spannungsschalter kann beispielsweise ein lichttriggerbarer Hoch¬ spannungsschalter sein. Das hat den Vorteil, daß die Wirkung des Kondensators 9 wahlweise zu- oder abschaltbar ist. So wird bei¬ spielsweise beim Kaltstart eine Zuschaltung des Kondensators 9 er¬ folgen, um einen sicheren Zündfunken auch bei stark verrusten Kerzen zu gewährleisten. - 5FIG. 4 also shows a construction similar to that of FIG. 1, but here a high-voltage switch 13 is arranged in series with the capacitor 9, parallel to the secondary winding 5. This high-voltage switch can be a light-triggerable high-voltage switch, for example. This has the advantage that the action of the capacitor 9 can optionally be switched on or off. Thus, for example, the capacitor 9 will be switched on during the cold start in order to ensure a reliable ignition spark even with heavily rusted candles. - 5th
Für Zündanlagen mit rotierender Verteilung ist es zur Erzielung eines hohen Aufsteilerungseffektes vorteilhaft, den Kondensator 9 im Zundspulengehäuse und die Hochspannungskippdiode beispielsweise in den Verteilerläufer, den Verteilermittelstecker, in die Zundleitung zwischen Zündspule und Verteiler oder direkt in die Zündspule ein¬ zubauen. For ignition systems with rotating distribution, to achieve a high distribution effect, it is advantageous to install the capacitor 9 in the ignition coil housing and the high-voltage breakover diode, for example in the distributor rotor, the distributor middle plug, in the ignition line between the ignition coil and distributor or directly in the ignition coil.

Claims

Ansprüche Expectations
1. Zündanlage für Brennkraftmaschinen, wobei im Sekundärkreis jeder Zündspule mindestens eine Kippdiodenkaskade als Hochspannungs-Halb- leiterschalter jeder Zündkerze vorgeschaltet ist, welche bei einer vorgewählten Spannung zur Erzeugung von Zündfunken vom Sperrzustand schlagartig in den leitenden Zustand übergeht, dadurch gekenn¬ zeichnet, daß die Kippdiodenkaskade (6) und ein vor der Kippdioden¬ kaskade parallel zur Sekundärwicklung der Zündspule (1) angeschlos¬ sener Kondensator (9) auf der der Zündkerze (8) entfernten Seite des Zündkabels angeordnet sind.1. Ignition system for internal combustion engines, wherein in the secondary circuit of each ignition coil, at least one breakdown diode cascade is connected upstream of each spark plug as a high-voltage semiconductor switch, which suddenly changes from the blocking state to the conductive state at a preselected voltage for generating ignition sparks, characterized in that Tilting diode cascade (6) and a capacitor (9) connected in front of the tipping diode cascade parallel to the secondary winding of the ignition coil (1) are arranged on the side of the ignition cable remote from the spark plug (8).
2. Zündanlage nach Anspruch 1, dadurch gekennzeichnet, daß als Kon¬ densator (9) ein keramischer Kondensator mit Temperaturgang ver¬ wendet wird, der im erwärmten Zustand eine geringere Kapazität auf¬ weist.2. Ignition system according to claim 1, characterized in that a ceramic capacitor with temperature response is used as the capacitor (9), which has a lower capacitance in the heated state.
3. Zündanlage nach Anspruch 1 und 2, dadurch gekennzeichnet, daß bei Doppelfunkenspulen (15) im Spulengehäuse (10) jedem Spulenende eine Kippdiodenkaskade (6a, 6b) zugeordnet und der Kondensator (9) zwischen beiden Kippdiodenkaskaden (6a und 6b) liegt. 3. Ignition system according to claim 1 and 2, characterized in that with double-spark coils (15) in the coil housing (10) each coil end a breakdown diode cascade (6a, 6b) assigned and the capacitor (9) between the two breakdown diode cascades (6a and 6b).
4. Zündanlage nach Anspruch 3, dadurch gekennzeichnet, daß die Kippdiodenkaskaden (6a, 6b) mit unterschiedlicher Polarität den unterschiedlichen Spulenenden zugeordnet sind.4. Ignition system according to claim 3, characterized in that the breakover diode cascades (6a, 6b) with different polarity are assigned to the different coil ends.
5. Zündanlage nach einem der vorherigen Ansprüche, dadurch gekenn¬ zeichnet, daß der Kondensator (9) wahlweise zu- oder abschaltbar ist.5. Ignition system according to one of the preceding claims, characterized gekenn¬ characterized in that the capacitor (9) can optionally be switched on or off.
6. Zündanlage nach Anspruch 5, dadurch gekennzeichnet, daß als Schalter ein lichttriggerbarer Hochspannungsschalter (13) zu dem Kondensator (9) in Reihe geschaltet ist.6. Ignition system according to claim 5, characterized in that a light-triggerable high-voltage switch (13) to the capacitor (9) is connected in series as a switch.
7. Zündanlage nach Anspruch 5 oder -6, dadurch gekennzeichnet, daß der Kondensator (9) vorzugsweise bei Kaltstart zugeschaltet ist. 7. Ignition system according to claim 5 or -6, characterized in that the capacitor (9) is preferably switched on during a cold start.
EP92907664A 1991-05-31 1992-04-14 Ignition system for internal combustion engines with high-tension switches Expired - Lifetime EP0587576B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4117808A DE4117808C2 (en) 1991-05-31 1991-05-31 Ignition systems for internal combustion engines with high-voltage switches
DE4117808 1991-05-31
PCT/DE1992/000305 WO1992021875A1 (en) 1991-05-31 1992-04-14 Ignition system for internal combustion engines with high-tension switches

Publications (2)

Publication Number Publication Date
EP0587576A1 true EP0587576A1 (en) 1994-03-23
EP0587576B1 EP0587576B1 (en) 1996-01-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP92907664A Expired - Lifetime EP0587576B1 (en) 1991-05-31 1992-04-14 Ignition system for internal combustion engines with high-tension switches

Country Status (6)

Country Link
US (1) US5379745A (en)
EP (1) EP0587576B1 (en)
JP (1) JPH06507461A (en)
DE (2) DE4117808C2 (en)
ES (1) ES2083165T3 (en)
WO (1) WO1992021875A1 (en)

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Also Published As

Publication number Publication date
JPH06507461A (en) 1994-08-25
DE4117808A1 (en) 1992-12-03
WO1992021875A1 (en) 1992-12-10
DE59205186D1 (en) 1996-03-07
EP0587576B1 (en) 1996-01-24
US5379745A (en) 1995-01-10
ES2083165T3 (en) 1996-04-01
DE4117808C2 (en) 1994-09-22

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