EP0933976B1 - Device for igniting a high pressure discharge lamp in a vehicle - Google Patents

Device for igniting a high pressure discharge lamp in a vehicle Download PDF

Info

Publication number
EP0933976B1
EP0933976B1 EP99101908A EP99101908A EP0933976B1 EP 0933976 B1 EP0933976 B1 EP 0933976B1 EP 99101908 A EP99101908 A EP 99101908A EP 99101908 A EP99101908 A EP 99101908A EP 0933976 B1 EP0933976 B1 EP 0933976B1
Authority
EP
European Patent Office
Prior art keywords
ignition
capacitor
discharge lamp
gas discharge
pressure gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99101908A
Other languages
German (de)
French (fr)
Other versions
EP0933976A3 (en
EP0933976A2 (en
Inventor
Wolfgang Daub
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP0933976A2 publication Critical patent/EP0933976A2/en
Publication of EP0933976A3 publication Critical patent/EP0933976A3/en
Application granted granted Critical
Publication of EP0933976B1 publication Critical patent/EP0933976B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices

Definitions

  • the invention relates to a device for igniting a High-pressure gas discharge lamp in a motor vehicle with at least one Ignition transformer, with at least one ignition capacitor and with one Switching element, which with the at least one ignition capacitor electrically connects the primary winding of the at least one ignition transformer for Generation of one of the operating voltage of the high pressure gas discharge lamp superimposed ignition voltage.
  • the problem with such a superimposed ignition device is that both the primary winding as well as the secondary winding of the ignition transformer together with capacitances in the primary circuit (especially the ignition capacitor) and in the secondary circuit (parasitic capacitances, interference suppression capacitors etc.) in each case form electrical resonant circuits over the at least one Ignition transformer are magnetically coupled.
  • the ignition energy is generated from the primary and secondary vibrations Ignition capacitor during the ignition process, at least partially, several times transmitted back and forth between the primary and the secondary circuit.
  • the ignition energy from the primary circuit arrives in several pulses the high pressure gas discharge lamp. It is particularly disadvantageous that the Lamp current has zero crossings, so that the High pressure gas discharge lamp immediately after an ignition pulse goes out.
  • the Lamp current has zero crossings, so that the High pressure gas discharge lamp immediately after an ignition pulse goes out.
  • B. at Relighting a hot high pressure gas discharge lamp is a reliable one Ignition no longer guaranteed.
  • the at least one Ignition capacitor is connected in parallel with a free-wheeling diode, which is exclusively a Recharge the ignition capacitor through the secondary circuit in the Prevent the primary circuit retransmitted ignition energy.
  • a free-wheeling diode which is exclusively a Recharge the ignition capacitor through the secondary circuit in the Prevent the primary circuit retransmitted ignition energy.
  • a particular advantage of the measure according to the invention is that it is very various types of ignition devices is suitable, namely especially for versions with one or more Ignition transformers and / or with one or more ignition capacitors.
  • a generic device for igniting a high pressure gas discharge lamp with an additional voltage limitation on the primary winding, so that the Voltage in the case of short connection lines can be limited from the EP-A 0 507 396 is known.
  • EP-A 0 405 715 shows a diode connected in series with a further diode, this series connection of diodes (functional with a single “replacement diode” can be compared) to an ignition capacitor connected in parallel is that this "spare diode” does not ignite this ignition capacitor during its Charging phase and short-circuits during the subsequent discharge phase.
  • This Series connection of diodes is suitable due to the specified polarity direction perform a "free run” function; however, this task is described in EP-A 0 405 715 not mentioned.
  • the series connection of diodes is here during the "usual" Charging phase of the ignition capacitor active.
  • DE-A 44 20 182 discloses a device for igniting a High pressure gas discharge lamp in which the diodes are parallel to the ignition capacitors are arranged. The mode of operation of this circuit is that of EP-A 0 405 715 similar. Furthermore, DE-A 44 20 182 has two secondary windings, on which only the half ignition voltage is present.
  • the two ignition devices shown in FIGS. 1 and 2 each have two Ignition transformers. Since the ignition voltage to be generated on the secondary side both ignition transformers distributed and thus only on each of the secondary windings half ignition voltage occurs, these ignition transformers with regard to their Insulation can be carried out in a particularly simple and compact manner.
  • the Ignition transformers can be designed such that the in the electrical leads High-pressure gas discharge lamp inserted secondary windings for filtering high-frequency interference pulses are suitable.
  • the high pressure gas discharge lamp (GEL) is connected via two connecting lines (1, 2) connected to a control unit, not shown, in each Connection line (1, 2) each the secondary winding of an ignition transformer (ZT1, ZT2) is switched.
  • V varistor
  • C capacitor
  • the primary windings of the ignition transformers (ZT1, ZT2) are (zünd C, C zünd1, C zünd2) with a ( Figure 2) or two ( Figure 1) firing capacitors connected, by means of a Schalffunkenumble (FS) as a switching element in the primary winding of the ignition transformers ( ZT1, ZT2) can be discharged.
  • each ignition transformer (ZT1, ZT2) is associated with its own ignition capacitor (C zünd1, C zünd2), whereas in the Figure 1, the charge of a single ignition capacitor (C zünd) on both ignition transformers (ZT1, ZT2 ) is divided.
  • An acceleration capacitor (C B ) is connected in parallel to the switching spark gap (FS), which accelerates the gas discharge of the switching spark gap, whereby the ignition voltages generated on the secondary side reach higher values.
  • the Schalffunkenrange discharges the / the firing capacitors (C zünd, C zünd1, C zünd2) in the primary side windings of the ignition transformers (ZT1, ZT2).
  • the ignition transformers (ZT1, ZT2) are switched so that the secondary ignition voltages add up.
  • the ignition voltage is superimposed on the open circuit voltage fed into the connecting lines (1, 2) by the control unit and ignites the high pressure gas discharge lamp.
  • the primary windings of the ignition transformers (ZT1, ZT2) act as inductors, which block both the common mode and the push-pull disturbances of the high-pressure gas discharge lamp (GEL).
  • the lamp capacitor (C L ) parallel to the high-pressure gas discharge lamp (GEL) also reduces the lamp faults during operation and also ensures that the two ignition voltages are synchronized and thus ensure that the phases are added correctly.
  • the problem underlying the invention is that the inductors of the ignition transformer windings both on the primary side and on the secondary side form resonant circuits together with different capacities.
  • Is in the primary circuit / these are the capacitance (s) of the or of the firing capacitors (C zünd, C zünd1, C zünd2), since the speed-up capacitor (C B) is short-circuited during the ignition by the Schalffunkenumble (FS).
  • the lamp capacitor (C L ) or the capacitor (C) provided for interference suppression together with the secondary windings of the ignition transformers (ZT1, ZT2) form oscillatory arrangements.
  • a freewheeling diode (D) (zünd C) parallel to the ignition capacitor, or in each case one freewheeling diode (D1, D2) to the firing capacitors (C zünd1, C zünd2) prevents an oscillation of the ignition current in parallel, because unused ignition energy not from the secondary circuit in the primary circuit can be re-transmitted, since the free-wheeling diode (s) (D, D1, D2), a recharging of the ignition capacitor (C zünd) or the firing capacitors (C zünd1, C zünd2) prevented by the back transmitted ignition energy.
  • the ignition current in the secondary circuit passes uniformly into the operating current.
  • GEL high-pressure gas discharge lamp

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

Ignition capacitors (Czund1,Czund2) are connected to primary winding(s) of ignition transformer(s). At least one has a recovery diode (D1,D2) connected in parallel.

Description

Die Erfindung betrifft eine Einrichtung zum Zünden einer Hochdruckgasentladungslampe in einem Kraftfahrzeug mit mindestens einem Zündtransformator, mit mindestens einem Zündkondensator und mit einem Schaltelement, welches den mindestens einen Zündkondensator elektrisch mit der Primärwicklung des mindestens einen Zündtransformators verbindet, zur Erzeugung einer der Betriebsspannung der Hochdruckgasentladungslampe zu überlagernden Zündspannung.The invention relates to a device for igniting a High-pressure gas discharge lamp in a motor vehicle with at least one Ignition transformer, with at least one ignition capacitor and with one Switching element, which with the at least one ignition capacitor electrically connects the primary winding of the at least one ignition transformer for Generation of one of the operating voltage of the high pressure gas discharge lamp superimposed ignition voltage.

Problematisch an einer solchen Überlagerungszündeinrichtung ist, daß sowohl die Primärwicklung als auch die Sekundärwicklung des Zündtransformators zusammen mit Kapazitäten im Primärkreis (insbesondere dem Zündkondensator) und im Sekundärkreis (parasitäre Kapazitäten, Entstörkondensatoren etc.) jeweils elektrische Schwingkreise ausbilden, die über den mindestens einen Zündtransformator magnetisch miteinander verkoppelt sind.The problem with such a superimposed ignition device is that both the primary winding as well as the secondary winding of the ignition transformer together with capacitances in the primary circuit (especially the ignition capacitor) and in the secondary circuit (parasitic capacitances, interference suppression capacitors etc.) in each case form electrical resonant circuits over the at least one Ignition transformer are magnetically coupled.

Durch primär- und sekundärseitige Schwingungen wird die Zündenergie aus dem Zündkondensator während des Zündvorganges, zumindest teilweise, mehrfach zwischen dem Primär- und dem Sekundärkreis hin und wieder zurückübertragen. Hierdurch gelangt die Zündenergie aus dem Primärkreis in mehreren Impulsen an die Hochdruckgasentladungslampe. Besonders nachteilig ist, daß hierbei der Lampenstrom Null-Durchgänge aufweist, so daß die Hochdruckgasentladungslampe unmittelbar nach einem Zündimpuls wieder erlischt. Besonders unter erschwerten Bedingungen, wie z. B. beim Wiederzünden einer heißen Hochdruckgasentladungslampe, ist ein zuverlässiges Zünden nicht mehr gewährleistet.The ignition energy is generated from the primary and secondary vibrations Ignition capacitor during the ignition process, at least partially, several times transmitted back and forth between the primary and the secondary circuit. As a result, the ignition energy from the primary circuit arrives in several pulses the high pressure gas discharge lamp. It is particularly disadvantageous that the Lamp current has zero crossings, so that the High pressure gas discharge lamp immediately after an ignition pulse goes out. Especially under difficult conditions, such as B. at Relighting a hot high pressure gas discharge lamp is a reliable one Ignition no longer guaranteed.

Es ist daher die Aufgabe der Erfindung, eine Einrichtung zum Zünden einer Hochdruckgasentladungslampe in einem Kraftfahrzeug zu schaffen, bei der ein Schwingen der Zündenergie zwischen dem Primärkreis und dem Sekundärkreis des mindestens einen Zündtransformators auf einfache und kostengünstige Weise verhindert wird und die gesamte Zündenergie in einem einzigen Zündimpuls an die Hochdruckgasentladungslampe gelangt. It is therefore the object of the invention to provide a device for igniting a To create high pressure gas discharge lamp in a motor vehicle, in which a Oscillation of the ignition energy between the primary circuit and the secondary circuit of the at least one ignition transformer on simple and inexpensive Way is prevented and all the ignition energy in one Ignition pulse arrives at the high pressure gas discharge lamp.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß dem mindestens einen Zündkondensator eine Freilaufdiode parallel geschaltet ist, die ausschließlich ein Wiederaufladen des Zündkondensators durch die aus dem Sekundärkreis in den Primärkreis zurückübertragene Zündenergie verhindern soll. Durch diese kostengünstige Freilaufdiode wird ein rückwärtiger Energieaustausch vom Sekundärkreis in den Primärkreis verhindert und somit ein Schwingen des Zündstromes durch die Hochdruckgasentladungslampe sicher unterdrückt.This object is achieved in that the at least one Ignition capacitor is connected in parallel with a free-wheeling diode, which is exclusively a Recharge the ignition capacitor through the secondary circuit in the Prevent the primary circuit retransmitted ignition energy. Through this Inexpensive freewheeling diode is a backward energy exchange from Prevents secondary circuit in the primary circuit and thus an oscillation of the ignition current suppressed safely by the high pressure gas discharge lamp.

Da die Zündenergie somit in einem einzigen energiereichen Zündimpuls an die Hochdruckgasentladungslampe gelangt und der Lampenstrom keine Null-Durchgänge durchläuft, ist ein zuverlässiges Zünden der Hochdruckgasentladungslampe gewährleistet.Since the ignition energy is thus sent to the in a single high-energy ignition pulse High pressure gas discharge lamp arrives and the lamp current no zero crossings passes, is a reliable ignition of the high pressure gas discharge lamp guaranteed.

Besonders vorteilhaft an der erfindungsgemäßen Maßnahme ist, daß sie für sehr verschiedenartige Ausführungsformen von Zündeinrichtungen geeignet ist, und zwar insbesondere auch für Ausführungen mit einem oder auch mehreren Zündtransformatoren und/oder mit einem oder mehreren Zündkondensatoren.A particular advantage of the measure according to the invention is that it is very various types of ignition devices is suitable, namely especially for versions with one or more Ignition transformers and / or with one or more ignition capacitors.

Eine gattungsgemäße Einrichtung zum Zünden einer Hochdruckgasentladungslampe mit einer zusätzlichen Spannungsbegrenzung auf der primärseitigen Wicklung, damit die Spannung im Falle von kurzen Anschlussleitungen begrenzt werden kann, ist aus der EP-A 0 507 396 bekannt.A generic device for igniting a high pressure gas discharge lamp with an additional voltage limitation on the primary winding, so that the Voltage in the case of short connection lines can be limited from the EP-A 0 507 396 is known.

Die EP-A 0 405 715 zeigt eine Diode in Reihenschaltung mit einer weiteren Diode, wobei diese Reihenschaltung von Dioden (funktionell mit einer einzigen "Ersatzdiode" gleichgestellt werden kann) einem Zündkondensator so gegenüber parallel geschaltet ist, dass diese "Ersatzdiode" diesen Zündkondensator nicht während seiner Aufladephase und während der darauffolgenden Entladungsphase kurzschließt. Diese Reihenschaltung von Dioden ist durch die angegebene Polungsrichtung dazu geeignet, eine "Freilauf"-Funktion auszüben; allerdings wird diese Aufgabe in der EP-A 0 405 715 nicht erwähnt. Die Reihenschaltung von Dioden ist hier während der "üblichen" Aufladephase des Zündkondensators aktiv. EP-A 0 405 715 shows a diode connected in series with a further diode, this series connection of diodes (functional with a single "replacement diode" can be compared) to an ignition capacitor connected in parallel is that this "spare diode" does not ignite this ignition capacitor during its Charging phase and short-circuits during the subsequent discharge phase. This Series connection of diodes is suitable due to the specified polarity direction perform a "free run" function; however, this task is described in EP-A 0 405 715 not mentioned. The series connection of diodes is here during the "usual" Charging phase of the ignition capacitor active.

Die DE-A 44 20 182 offenbart eine Einrichtung zum Zünden einer Hochdruckgasentladungslampe, in der die Dioden parallel zu den Zündkondensatoren angeordnet sind. Die Betriebsweise dieser Schaltung ist der aus der EP-A 0 405 715 ähnlich. Weiter sind in der DE-A 44 20 182 zwei Sekundärwicklungen, an denen nur die halbe Zündspannung anliegt, offenbart.DE-A 44 20 182 discloses a device for igniting a High pressure gas discharge lamp in which the diodes are parallel to the ignition capacitors are arranged. The mode of operation of this circuit is that of EP-A 0 405 715 similar. Furthermore, DE-A 44 20 182 has two secondary windings, on which only the half ignition voltage is present.

In der nicht vorveröffentlichten WO-A 99/02018 wird eine ähnliche Aufgabe erwähnt, dabei wird als alternative Lösung ein nicht-linearer Zündkondensator primärseitig eingesetzt. Im folgenden soll die erfindungsgemäße Einrichtung anhand von zwei in der Zeichnung dargestellten Ausführungsbeispielen näher erläutert werden.A similar task is mentioned in the unpublished WO-A 99/02018, an alternative solution is a non-linear ignition capacitor on the primary side used. In the following, the device according to the invention is based on two in the drawing illustrated embodiments are explained in more detail.

Es zeigen

  • Figur 1 ein erstes Ausführungsbeispiel der erfindungsgemäßen Einrichtung;
  • Figur 2 ein zweites Ausführungsbeispiel der erfindungsgemäßen Einrichtung.
    • Show it
  • Figure 1 shows a first embodiment of the device according to the invention;
  • Figure 2 shows a second embodiment of the device according to the invention.

    • Die beiden in den Figuren 1 und 2 dargestellten Zündeinrichtungen weisen jeweils zwei Zündtransformatoren auf. Da sich die sekundärseitig zu erzeugende Zündspannung auf beide Zündtransformatoren verteilt und somit an jeder der Sekundärwicklungen nur die halbe Zündspannung auftritt, können diese Zündtransformatoren hinsichtlich ihrer Isolierung besonders einfach und kleinbauend ausgeführt werden. Zudem können die Zündtransformatoren derart ausgebildet sein, daß die in die elektrischen Zuleitungen der Hochdruckgasentladungslampe eingefügten Sekundärwicklungen zur Ausfilterung hochfrequenter Störimpulse geeignet sind. The two ignition devices shown in FIGS. 1 and 2 each have two Ignition transformers. Since the ignition voltage to be generated on the secondary side both ignition transformers distributed and thus only on each of the secondary windings half ignition voltage occurs, these ignition transformers with regard to their Insulation can be carried out in a particularly simple and compact manner. In addition, the Ignition transformers can be designed such that the in the electrical leads High-pressure gas discharge lamp inserted secondary windings for filtering high-frequency interference pulses are suitable.

    Die Hochdruckgasentladungslampe (GEL) ist über zwei Verbindungsleitungen (1, 2) mit einem nicht dargestellten Steuergerät verbunden, wobei in jede Verbindungsleitung (1, 2) jeweils die Sekundärwicklung eines Zündtransformators (ZT1, ZT2) geschaltet ist.The high pressure gas discharge lamp (GEL) is connected via two connecting lines (1, 2) connected to a control unit, not shown, in each Connection line (1, 2) each the secondary winding of an ignition transformer (ZT1, ZT2) is switched.

    Zum Schutz des Steuergerätes vor der rückwirkenden Zündspannung sind die jeweils steuergeräteseitigen Anschlüsse der beiden Sekundärwicklungen mittels eines Varistors (V) und eines Kondensators (C) als spannungsbegrenzende Mittel miteinander verbunden.To protect the control unit from the retroactive ignition voltage control unit-side connections of the two secondary windings by means of a varistor (V) and a capacitor (C) as voltage-limiting means connected with each other.

    Die Primärwicklungen der Zündtransformatoren (ZT1, ZT2) sind mit einem (Figur 2) oder zwei (Figur 1) Zündkondensatoren (Czünd, Czünd1, Czünd2) verbunden, die mittels einer Schalffunkenstrecke (FS) als Schaltelement in die Primärwicklung der Zündtransformatoren (ZT1, ZT2) entladen werden. Hierbei ist bei der in der Figur 2 dargestellten Einrichtung jedem Zündtransformator (ZT1, ZT2) ein eigener Zündkondensator (Czünd1, Czünd2) zugeordnet, wohingegen bei der Figur 1 die Ladung eines einzigen Zündkondensators (Czünd) auf beide Zündtransformatoren (ZT1, ZT2) aufgeteilt wird.The primary windings of the ignition transformers (ZT1, ZT2) are (zünd C, C zünd1, C zünd2) with a (Figure 2) or two (Figure 1) firing capacitors connected, by means of a Schalffunkenstrecke (FS) as a switching element in the primary winding of the ignition transformers ( ZT1, ZT2) can be discharged. Here, in the embodiment shown in the Figure 2 device is each ignition transformer (ZT1, ZT2) is associated with its own ignition capacitor (C zünd1, C zünd2), whereas in the Figure 1, the charge of a single ignition capacitor (C zünd) on both ignition transformers (ZT1, ZT2 ) is divided.

    Der Schalffunkenstrecke (FS) ist jeweils ein Beschleunigungskondensator (CB) parallel geschaltet, welcher die Gasentladung der Schaltfunkenstrecke beschleunigt ablaufen läßt, wodurch die sekundärseitig erzeugten Zündspannungen höhere Werte erreichen.An acceleration capacitor (C B ) is connected in parallel to the switching spark gap (FS), which accelerates the gas discharge of the switching spark gap, whereby the ignition voltages generated on the secondary side reach higher values.

    Die Funktionsweise der dargestellten Einrichtungen ist folgende:The functions of the devices shown are as follows:

    Über die Verbindungsleitungen (3, 4) und die Widerstände (R1, R2) lädt das (nicht dargestellte) Steuergerät den bzw. die Zündkondensatoren (Czünd, Czünd1, Czünd2) bis auf einen Spannungswert auf, der oberhalb der Zündspannung der Schalffunkenstrecke (FS) liegt.Via the connecting lines (3, 4) and the resistors (R1, R2) that loads (not shown) control unit which, or the firing capacitors (C zünd, C zünd1, C zünd2) to a voltage value which is above the firing voltage of the Schalffunkenstrecke (FS) lies.

    Mittels einer Gasentladung entlädt die Schalffunkenstrecke (FS) den/die Zündkondensatoren (Czünd, Czünd1, Czünd2) in die primärseitigen Wicklungen der Zündtransformatoren (ZT1, ZT2).By means of a gas discharge, the Schalffunkenstrecke (FS) discharges the / the firing capacitors (C zünd, C zünd1, C zünd2) in the primary side windings of the ignition transformers (ZT1, ZT2).

    Die Zündtransformatoren (ZT1, ZT2) sind so geschaltet, daß sich die sekundärseitigen Zündspannungen addieren. Die Zündspannung ist der vom Steuergerät in die Verbindungsleitungen (1, 2) eingespeisten Leerlaufspannung überlagert und zündet die Hochdruckgasentladungslampe. Nach dem Zünden der Hochdruckgasentladungslampe (GEL) wirken die Primärwicklungen der Zündtransformatoren (ZT1, ZT2) als Induktivitäten, welche sowohl die Gleichtaktals auch die Gegentaktstörungen der Hochdruckgasentladungslampe (GEL) abblocken. Der Lampenkondensator (CL) parallel zur Hochdruckgasentladungslampe (GEL) reduziert zudem ursächlich die Lampenstörungen während des Betriebs und sorgt zudem für eine Synchronisation der beiden Zündspannungen und damit für eine phasenrichtige Addition.The ignition transformers (ZT1, ZT2) are switched so that the secondary ignition voltages add up. The ignition voltage is superimposed on the open circuit voltage fed into the connecting lines (1, 2) by the control unit and ignites the high pressure gas discharge lamp. After the high-pressure gas discharge lamp (GEL) has been ignited, the primary windings of the ignition transformers (ZT1, ZT2) act as inductors, which block both the common mode and the push-pull disturbances of the high-pressure gas discharge lamp (GEL). The lamp capacitor (C L ) parallel to the high-pressure gas discharge lamp (GEL) also reduces the lamp faults during operation and also ensures that the two ignition voltages are synchronized and thus ensure that the phases are added correctly.

    Das der Erfindung zugrundeliegende Problem liegt darin, daß die Induktivitäten der Zündtransformatorwicklungen sowohl primärseitig als auch sekundärseitig zusammen mit verschiedenen Kapazitäten Schwingkreise ausbilden.The problem underlying the invention is that the inductors of the ignition transformer windings both on the primary side and on the secondary side form resonant circuits together with different capacities.

    Im Primärkreis ist/sind dies die Kapazität(en) des oder der Zündkondensatoren (Czünd, Czünd1, Czünd2), da der Beschleunigungskondensator (CB) während des Zündvorgangs durch die Schalffunkenstrecke (FS) kurzgeschlossen ist.Is in the primary circuit / these are the capacitance (s) of the or of the firing capacitors (C zünd, C zünd1, C zünd2), since the speed-up capacitor (C B) is short-circuited during the ignition by the Schalffunkenstrecke (FS).

    Im Sekundärkreis bilden der Lampenkondensator (CL) beziehungsweise der zur Entstörung vorgesehene Kondensator (C) zusammen mit den Sekundärwicklungen der Zündtransformatoren (ZT1, ZT2) schwingungsfähige Anordnungen.In the secondary circuit, the lamp capacitor (C L ) or the capacitor (C) provided for interference suppression together with the secondary windings of the ignition transformers (ZT1, ZT2) form oscillatory arrangements.

    Da die primär- und sekundärseitigen Schwingkreise durch die Zündtransformatoren (ZT1, ZT2) magnetisch gekoppelt sind, wird (entsprechend dem mechanischen Analogon der gekoppelten Pendel) die Zündenergie vom Primärkreis in den Sekundärkreis und wieder zurück übertragen.Since the primary and secondary resonant circuits through the Ignition transformers (ZT1, ZT2) are magnetically coupled (accordingly the mechanical analogue of the coupled pendulum) the ignition energy from Transfer the primary circuit to the secondary circuit and back again.

    Die erfindungsgemäße Anordnung einer Freilaufdiode (D) parallel zum Zündkondensator (Czünd) beziehungsweise jeweils einer Freilaufdiode (D1, D2) parallel zu den Zündkondensatoren (Czünd1, Czünd2) verhindert ein Schwingen des Zündstromes, weil ungenutzte Zündenergie nicht mehr aus dem Sekundärkreis in den Primärkreis zurückübertragen werden kann, da die Freilaufdiode(n) (D, D1, D2) ein Wiederaufladen des Zündkondensators (Czünd) beziehungsweise der Zündkondensatoren (Czünd1, Czünd2) durch die zurückübertragene Zündenergie verhindert. Im Sekundärkreis geht hierdurch der Zündstrom gleichförmig in den Betriebsstrom über. Zudem gelangt nur ein einziger und energiereicher Zündimpuls an die Hochdruckgasentladungslampe (GEL), wodurch ein zuverlässiges Zünden auch unter kritischen Bedingungen, insbesondere beim Wiederzünden einer heißen Hochdruckgasentladungslampe, erzielt wird. The inventive arrangement a freewheeling diode (D) (zünd C) parallel to the ignition capacitor, or in each case one freewheeling diode (D1, D2) to the firing capacitors (C zünd1, C zünd2) prevents an oscillation of the ignition current in parallel, because unused ignition energy not from the secondary circuit in the primary circuit can be re-transmitted, since the free-wheeling diode (s) (D, D1, D2), a recharging of the ignition capacitor (C zünd) or the firing capacitors (C zünd1, C zünd2) prevented by the back transmitted ignition energy. As a result, the ignition current in the secondary circuit passes uniformly into the operating current. In addition, only a single, high-energy ignition pulse reaches the high-pressure gas discharge lamp (GEL), as a result of which reliable ignition is achieved even under critical conditions, in particular when a hot high-pressure gas discharge lamp is re-ignited.

    BezugszeichenlisteReference list

    Einrichtung zum Zünden einer Hochdruckgasentladungslampe in einem Kraftfahrzeug

    C
    Kondensator
    CB
    Beschleunigungskondensator
    CL
    Lampenkondensator
    Czünd' Czünd1' Czünd2
    Zündkondensatoren
    D, D1, D2
    Freilaufdioden
    FS
    Schaltelement (Schaltfunkenstrecke)
    GEL
    Hochdruckgasentladungslampe
    R1, R2
    Widerstände
    V
    Varistor
    ZT1, ZT2
    Zündtransformatoren
    1,2,3,4
    Verbindungsleitungen
    Device for igniting a high-pressure gas discharge lamp in a motor vehicle
    C.
    capacitor
    C B
    Acceleration capacitor
    C L
    Lamp capacitor
    C ignite ' C ignite1' C ignite2
    Ignition capacitors
    D, D1, D2
    Free wheeling diodes
    FS
    Switching element (switching spark gap)
    GEL
    High pressure gas discharge lamp
    R1, R2
    Resistances
    V
    Varistor
    ZT1, ZT2
    Ignition transformers
    1,2,3,4
    Connecting lines

    Claims (4)

    1. Device for igniting a high-pressure gas discharge lamp in a motor vehicle with at least one ignition transformer, at least one ignition capacitor and a switching element which connects the at least one ignition capacitor electrically to the primary winding of the at least one ignition transformer, for generating an ignition voltage to be superimposed on the operating voltage of the high-pressure gas discharge lamp, characterised in that a free-running diode (D, D1, D2), the sole function of which is to prevent recharging of the ignition capacitor (CZünd) through transmission of the ignition energy from the secondary circuit back to the primary circuit, is connected in parallel to the at least one ignition capacitor (CZünd, CZünd1, CZünd2).
    2. Device according to Claim 1, characterised in that the device has two ignition transformers (ZT1, ZT2).
    3. Device according to Claim 2, characterised in that the switching element discharges a common ignition capacitor (CZünd) into the primary windings of both ignition transformers (ZT1, ZT2).
    4. Device according to Claim 2, characterised in that each ignition transformer (ZT1, ZT2) is associated with its own ignition capacitor (CZünd1) CZünd2) and that a free-running diode (D1, D2) is connected in parallel to each ignition capacitor (CZünd1) CZünd2).
    EP99101908A 1998-01-31 1999-01-29 Device for igniting a high pressure discharge lamp in a vehicle Expired - Lifetime EP0933976B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    DE19803854 1998-01-31
    DE19803854A DE19803854A1 (en) 1998-01-31 1998-01-31 Device for igniting a high-pressure gas discharge lamp in a motor vehicle

    Publications (3)

    Publication Number Publication Date
    EP0933976A2 EP0933976A2 (en) 1999-08-04
    EP0933976A3 EP0933976A3 (en) 2000-03-29
    EP0933976B1 true EP0933976B1 (en) 2001-11-21

    Family

    ID=7856293

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99101908A Expired - Lifetime EP0933976B1 (en) 1998-01-31 1999-01-29 Device for igniting a high pressure discharge lamp in a vehicle

    Country Status (4)

    Country Link
    EP (1) EP0933976B1 (en)
    AT (1) ATE209427T1 (en)
    DE (2) DE19803854A1 (en)
    ES (1) ES2168814T3 (en)

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7456583B2 (en) 2006-09-05 2008-11-25 General Electric Company Electrical circuit with dual stage resonant circuit for igniting a gas discharge lamp
    US7460379B2 (en) 2006-09-05 2008-12-02 General Electric Company Electrical circuit with voltage multiplier for facilitating ignition of a gas discharge lamp

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE10159112A1 (en) * 2001-12-01 2003-06-18 Hella Kg Hueck & Co Ignition transformer for motor vehicle gas discharge lamp, has permanent magnet located in air-gap of annular core
    EP2030487A1 (en) * 2006-05-31 2009-03-04 Koninklijke Philips Electronics N.V. Method and system for operating a gas discharge lamp

    Family Cites Families (8)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE2904001C2 (en) * 1977-09-30 1983-04-28 Walter Bauch GmbH, 1000 Berlin Ignitor and operating device for high pressure discharge lamps
    US4890041A (en) * 1988-03-10 1989-12-26 Hubbell Incorporated High wattage HID lamp circuit
    US5047694A (en) * 1989-06-30 1991-09-10 Hubbell Incorporated Lamp starting circuit
    EP0507396B1 (en) * 1991-04-04 1998-06-10 Koninklijke Philips Electronics N.V. Circuit arrangement
    FR2707051B1 (en) * 1993-06-10 1996-03-08 Matsushita Electric Works Ltd
    CA2164511A1 (en) * 1994-04-06 1995-10-19 Anton Cornelis Blom Circuit arrangement
    DE4423275A1 (en) * 1994-07-05 1996-01-11 Bosch Gmbh Robert Ignition device for gas discharge lamps, in particular for motor vehicle lights
    TW391620U (en) * 1997-07-04 2000-05-21 Koninkl Philips Electronics Nv Circuit arrangement

    Cited By (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US7456583B2 (en) 2006-09-05 2008-11-25 General Electric Company Electrical circuit with dual stage resonant circuit for igniting a gas discharge lamp
    US7460379B2 (en) 2006-09-05 2008-12-02 General Electric Company Electrical circuit with voltage multiplier for facilitating ignition of a gas discharge lamp

    Also Published As

    Publication number Publication date
    EP0933976A3 (en) 2000-03-29
    DE19803854A1 (en) 1999-08-05
    ES2168814T3 (en) 2002-06-16
    DE59900657D1 (en) 2002-02-21
    ATE209427T1 (en) 2001-12-15
    EP0933976A2 (en) 1999-08-04

    Similar Documents

    Publication Publication Date Title
    DE3137239C2 (en) Plasma ignition device for an internal combustion engine
    EP0127101A1 (en) Inverter for feeding discharge lamps
    DE2628509C2 (en) Capacity discharge ignition system
    EP0062276A1 (en) Ballast circuit for the operation of low-pressure discharge lamps
    EP2252133A2 (en) Switching assembly for operating a low pressure gas discharge lamp and method for same
    DE2434574B2 (en) Ignition arrangement for internal combustion engines
    EP0933976B1 (en) Device for igniting a high pressure discharge lamp in a vehicle
    DE2827395A1 (en) CIRCUIT ARRANGEMENT FOR IGNITING AN ELECTRIC DISCHARGE LAMP
    EP0914754A1 (en) Ignition device for a discharge lamp and method for igniting a discharge lamp
    EP1583403B1 (en) Ballast for at least one lamp
    DE19530746A1 (en) Circuit arrangement for operating a high-pressure gas discharge lamp with alternating current
    EP1056314B1 (en) Circuit for operating AC high pressure discharge lamps for a vehicle
    DE4133027C2 (en) Ignition device for an internal combustion engine
    DE2145089A1 (en) CAPACITOR IGNITION SYSTEM FOR COMBUSTION MACHINERY
    WO1999062304A1 (en) Starter for a gas discharge lamp, especially a high pressure gas discharge lamp for automobile headlights
    DE3137940A1 (en) ELECTRONIC CONTROLLER FOR AT LEAST ONE FLUORESCENT LAMP
    DE19608658C1 (en) High-pressure gas discharge lamp ignition and operating circuit
    DE4015400A1 (en) Starter circuit for vehicle gas discharge lamp - has resonator circuit with limiting action and including two inductances and capacitor
    EP0794695B1 (en) Circuit for operating a high pressure discharge lamp
    EP0599887B1 (en) Device for operating a gas-discharge lamp
    EP0933977A2 (en) Device for igniting and operating a high pressure discharge lamp in a vehicle
    DE3805159A1 (en) Electronic ballast device
    EP0794694B1 (en) Circuit for operating a high pressure discharge lamp
    DE3412942C2 (en) Electronic ballast for several fluorescent lamps
    DE19608655A1 (en) Power control of a high-pressure gas discharge lamp operated with alternating current, in particular for motor vehicles

    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: A2

    Designated state(s): AT DE ES FR GB IT

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    PUAL Search report despatched

    Free format text: ORIGINAL CODE: 0009013

    AK Designated contracting states

    Kind code of ref document: A3

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

    AX Request for extension of the european patent

    Free format text: AL;LT;LV;MK;RO;SI

    17P Request for examination filed

    Effective date: 20000704

    17Q First examination report despatched

    Effective date: 20001002

    AKX Designation fees paid

    Free format text: AT DE ES FR GB IT

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    GRAG Despatch of communication of intention to grant

    Free format text: ORIGINAL CODE: EPIDOS AGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    GRAH Despatch of communication of intention to grant a patent

    Free format text: ORIGINAL CODE: EPIDOS IGRA

    ITF It: translation for a ep patent filed

    Owner name: INTERPATENT ST.TECN. BREV.

    GRAA (expected) grant

    Free format text: ORIGINAL CODE: 0009210

    AK Designated contracting states

    Kind code of ref document: B1

    Designated state(s): AT DE ES FR GB IT

    REF Corresponds to:

    Ref document number: 209427

    Country of ref document: AT

    Date of ref document: 20011215

    Kind code of ref document: T

    REG Reference to a national code

    Ref country code: GB

    Ref legal event code: IF02

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

    Ref country code: AT

    Payment date: 20020124

    Year of fee payment: 4

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

    Effective date: 20020128

    REF Corresponds to:

    Ref document number: 59900657

    Country of ref document: DE

    Date of ref document: 20020221

    ET Fr: translation filed
    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FG2A

    Ref document number: 2168814

    Country of ref document: ES

    Kind code of ref document: T3

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

    Ref country code: AT

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

    Effective date: 20030129

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

    Ref country code: GB

    Payment date: 20070124

    Year of fee payment: 9

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

    Effective date: 20080129

    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: 20080129

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

    Ref country code: ES

    Payment date: 20100128

    Year of fee payment: 12

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

    Ref country code: IT

    Payment date: 20100121

    Year of fee payment: 12

    Ref country code: FR

    Payment date: 20100208

    Year of fee payment: 12

    REG Reference to a national code

    Ref country code: FR

    Ref legal event code: ST

    Effective date: 20110930

    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: 20110131

    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 NON-PAYMENT OF DUE FEES

    Effective date: 20110129

    REG Reference to a national code

    Ref country code: ES

    Ref legal event code: FD2A

    Effective date: 20120220

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

    Ref country code: ES

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

    Effective date: 20110130

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

    Ref country code: DE

    Payment date: 20170125

    Year of fee payment: 19

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R081

    Ref document number: 59900657

    Country of ref document: DE

    Owner name: HELLA GMBH & CO. KGAA, DE

    Free format text: FORMER OWNER: HELLA KGAA HUECK & CO., 59557 LIPPSTADT, DE

    REG Reference to a national code

    Ref country code: DE

    Ref legal event code: R119

    Ref document number: 59900657

    Country of ref document: DE

    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: 20180801