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DE2838334A1 - IC engine spark plug - has integrated ignition coil secondary embedded in spark plug insulator - Google Patents

IC engine spark plug - has integrated ignition coil secondary embedded in spark plug insulator

Info

Publication number
DE2838334A1
DE2838334A1 DE19782838334 DE2838334A DE2838334A1 DE 2838334 A1 DE2838334 A1 DE 2838334A1 DE 19782838334 DE19782838334 DE 19782838334 DE 2838334 A DE2838334 A DE 2838334A DE 2838334 A1 DE2838334 A1 DE 2838334A1
Authority
DE
Germany
Prior art keywords
spark plug
insulator
ignition
ignition coil
high voltage
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.)
Withdrawn
Application number
DE19782838334
Other languages
German (de)
Inventor
Karl Thiel
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.)
THIEL KARL DIPL BIOLOGE
Original Assignee
THIEL KARL DIPL BIOLOGE
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 THIEL KARL DIPL BIOLOGE filed Critical THIEL KARL DIPL BIOLOGE
Priority to DE19782838334 priority Critical patent/DE2838334A1/en
Publication of DE2838334A1 publication Critical patent/DE2838334A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00Sparking plugs
    • H01T13/40Sparking plugs structurally combined with other devices
    • H01T13/44Sparking plugs structurally combined with other devices with transformers, e.g. for high-frequency ignition
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02PIGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P13/00Sparking plugs structurally combined with other parts of internal-combustion engines

Landscapes

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

Abstract

The secondary coil of the ignition transformer is embedded in the insulator of the spark plug, while the primary for high voltage induction is mounted outside and round the spark plug insulator. This arrangement prevents attenuation of the high voltage plus, when conducted via a cable, due to capacitance and inductances, which would limit the pulse flank steepness. The arrangement also removes limits for increasing flash over voltages necessary for moist and dust polluted air.

Description

Zündkerze für Verbrennungsmotoren mit integrierterSpark plug for internal combustion engines with integrated

Zündspulen-Sekundärwicklung Die Erfindung betrifft eine Zündkerze für Verbrennungsmotoren zur Zündung eines Kraftstoff/Luft-Gemisches.Ignition coil secondary winding The invention relates to a spark plug for internal combustion engines to ignite a fuel / air mixture.

Bei derartigen Zündkerzen sind hohe elektrische Spannungen erforderlich,um dem Kraftstoff/Luft-Gemisch die zur Zündung notwendige Aktivierungsenergis in Form eines elektrischen Funken zuzuführen, Es ist bekannt,zu diesem Zweck Zündkerzen zu verwenden,bei denen im Brennraum der Zündfunke zwischen zwei Elektroden überspringt und die dazu erforderliche Hochspannung durch ein Kabel an den durch einen Isolations körper umhüllten Elektrodenanschluß angelegt wird, Diese Methode ist jedoch mit mehreren Nachteilen behaftet.Durch die hochspannungsführenden Kabel wird nämlich der Hochspannungsimpuls aufgrund von Kapazitäten und Induktivitäten bedämpft,wodurch die Anstiegsflankensteilheit des Impulses begrenzt wird,Außerdem lassen sich die Ubersohlagespannungen nicht beliebig erhöhen,z.B.durch Vergrößern des Elektrodenabstands, da dann die Entladung außen über den Isolationskörper und die Kabelisolierung erfolgt.Dieser Effekt tritt besonders bei hoher Luftfeuchtigkeit und Staubbelag auf dem Isolationskörper und den Kabelisolierungen auf. In such spark plugs, high electrical voltages are required to The activation energy required for ignition in the form of the fuel / air mixture To supply an electric spark, it is known to use spark plugs for this purpose should be used in which the ignition spark jumps between two electrodes in the combustion chamber and the high voltage required for this through a cable to the through an insulation body-encased electrode connection is applied, this method is however with has several disadvantages, namely because of the high-voltage cables the high-voltage pulse is attenuated due to capacitances and inductances, whereby the rising edge steepness of the pulse is limited. In addition, the Do not increase the oversole tension at will, e.g. by increasing the distance between the electrodes, because then the discharge takes place outside via the insulation body and the cable insulation The effect occurs particularly with high humidity and dust deposits on the insulation body and the cable insulation.

Durch die genannten Nachteile ist die realisierbare Aktivierungsenergie zur Zündung eines Kraftstoff/Luft-Gemisches stark begrenzt.Deshalb können Kraftstoff/ Luft-Gemische mit höherem Aktivierungsenergiebedarf wie z,B.Dieselkraftstoff/Luft-Gemische oder andere Gemische mit schwerflüchtigen Mineralölfraktionen auf die beschriebene Weise nicht gezündet werden.The activation energy that can be realized is due to the disadvantages mentioned for igniting a fuel / air mixture, which is why fuel / Air mixtures with higher activation energy requirements, e.g. diesel fuel / air mixtures or other mixtures with non-volatile mineral oil fractions to the one described Way not to be ignited.

Der ErIindunO liegt die Aufgabe zugrunde, die hochspannungsführenden Teile wesentlich besser zu isolieren um die Störanfälligkeit zu vermindern,sowie eine höhere Überschlagsspannung zwischen den Elektroden und schnelleren Spannungsanstieg zu erreichen um die freIwerdende Aktivierungsenergie zu erhöhen. The ErIindunO is based on the task of carrying the high voltage To isolate parts much better in order to reduce the susceptibility to failure, as well a higher breakdown voltage between the electrodes and a faster voltage rise to increase the activation energy released.

Diese Aufgabe wird erfindungsmäßig dadurch gelöst, daß die Dekundärspule des Zündtransformstors in den lsolationskörper der Zündkerze eingebettet ist.Dabai wir die Hochspannung von einer außerhalb des isolationskörpers befindlichen Primärwicklung induziert. According to the invention, this object is achieved in that the secondary coil of the ignition transformer is embedded in the insulation body of the spark plug.Dabai We take the high voltage from a primary winding located outside the insulation body induced.

Die erforderliche Primärwicklung befindet sich in einer AuBsteckkappè,um einfache montage und Demontage zu gewährleisten und bei Zündkerzenwechsel die Srsatzteilkosten niedrig zu halten. The required primary winding is in a plug-in cap to ensure easy assembly and disassembly and the replacement costs when changing spark plugs to keep it low.

Die mit der erfindung erzielten Vorteile sind in der verminderten Störanfälligkeit bei 'euchtigkeit sowie in der höheren Zündspannung und dem schnelleren Zündspannungsanstieg gegenüber herkömmlichen Zünkerzen zu sehen. The advantages achieved with the invention are diminished Susceptibility to failure with humidity as well as in the higher ignition voltage and the faster one To see ignition voltage increase compared to conventional spark plugs.

Außerdem gewährleistet die bessere Zündsicherheit eine längere Betriebszeit.In addition, the better ignition reliability ensures a longer operating time.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.Sig.1 zeigt das Schnittbild der Zündkerze für Verbrennungsmotoren mit integrierter Zündspulen-Sekundärwicklung. An embodiment of the invention is shown in the drawing and is described in more detail below. Figure 1 shows the sectional view of the spark plug for combustion engines with integrated ignition coil secondary winding.

Im Isolationskörper(1) der Zünkerze eingebettet befindet sich die Sekundärwicklung(2),die aus hitzebeständigem Draht besteht.Der eine Anschluß der Sekundärwicklung(2) ist am Mittelelektrodenstift(3)angeschlossen, wahrend der andere Anschluß durch den Isolationskörper(1) hindurch an den Zündkerzengewindekörper(4)geführt ist,der aus elektrisch leitendem iyiaterial besteht. The spark plug is embedded in the insulation body (1) Secondary winding (2), which consists of heat-resistant wire. One connection of the Secondary winding (2) is connected to the center electrode pin (3) while the other Connection passed through the insulation body (1) to the spark plug thread body (4) made of electrically conductive material.

Die Primär-wicklUng(5)befindet sich in einer Metallkappe(6)mit hoher Permeabilität und ist in eine Vergußmasse (7)eingebetteaI) Primarwicklung(5)wird über ein Zuführungskabel(8) mit dem Primärimpuls gespeist.The primary winding (5) is located in a metal cap (6) with a high Permeability and is in a potting compound (7) embedded aI) primary winding (5) is Supplied with the primary pulse via a feed cable (8).

Der andere Anschluß der Primärwicklung(5) ist mit der Metallkappe(4)verbunden,Die Metallkappe(6)ist so ausgebildet,daß beim Aufstecken auf die Zündkerze elektrischer Kontakt zum Zündkerzengewindekörper(4)hergestellt wird,der wiederum mit dem Masseanschluß der elektrischen Anlage verbunden ist.Die Metallkappe(6) hat außerdem die Aufgabe,die Induktivität zu erhöhen um einen guten Wirkungsgrad bei der Induktion der Hochspannung zu gewährleisten.Das Wicklungsverhältnis der beiden Spulen zueinander sowie die Drahtdurchmesser müssen Je nach Art der Primärimpulse ausgelegt werden.The other terminal of the primary winding (5) is connected to the metal cap (4), Die Metal cap (6) is designed so that when plugged onto the spark plug electrical Contact to the spark plug thread body (4) is made, which in turn with the ground connection the electrical system is connected. The metal cap (6) also has the task of To increase the inductance in order to achieve a good efficiency in the induction of the high voltage The winding ratio of the two coils to each other as well as the Wire diameters must be designed depending on the type of primary pulse.

Für die Primärimpuls-Steuerung können alle bekannten Zündsysteme wie z.B.Batterie-Zündung,Magnet-Zündung, Transistor-Zündung oder Hochspannungs-Kondensatorzündung verwendet werden, Fig.2 zeigt eine schematische Darstellung der Brfindung.All known ignition systems such as e.g. battery ignition, magnet ignition, transistor ignition or high-voltage capacitor ignition are used, Fig.2 shows a schematic representation of the invention.

Claims (1)

Patentansprüche 1) Zündkerze für Verbrennungsmotoren zur Zündung eines Kraftstoff/Luft-Gemisches, dadurch gekennzeichnet,daß die Sekundärspule des Zündtransformators in den Isolationskörper der Zündkere eingebettet ist, 2) Zündkerze für Verbrennungsmotoren zur Zündung eir.Claims 1) Spark plug for internal combustion engines to ignite a Fuel / air mixture, characterized in that the secondary coil of the ignition transformer The spark plug is embedded in the insulation body, 2) spark plugs for internal combustion engines for ignition eir. Kraftstoff/Iiuft-Gemische s , dadurch gekennzeichnet,daß die zur Hochspannungsinedukt ion erforderliche Primärspule außerhalb des Isolationskörpers der Zündkerze um diesen herum angeordnet ist. Fuel / air mixtures, characterized in that the for High voltage induction required primary coil outside the insulation body the spark plug is arranged around this.
DE19782838334 1978-09-02 1978-09-02 IC engine spark plug - has integrated ignition coil secondary embedded in spark plug insulator Withdrawn DE2838334A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782838334 DE2838334A1 (en) 1978-09-02 1978-09-02 IC engine spark plug - has integrated ignition coil secondary embedded in spark plug insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782838334 DE2838334A1 (en) 1978-09-02 1978-09-02 IC engine spark plug - has integrated ignition coil secondary embedded in spark plug insulator

Publications (1)

Publication Number Publication Date
DE2838334A1 true DE2838334A1 (en) 1980-03-20

Family

ID=6048530

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782838334 Withdrawn DE2838334A1 (en) 1978-09-02 1978-09-02 IC engine spark plug - has integrated ignition coil secondary embedded in spark plug insulator

Country Status (1)

Country Link
DE (1) DE2838334A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088412A1 (en) * 1982-03-10 1983-09-14 Karl Dungs GmbH & Co. Automatic gas-firing device
EP0172954A1 (en) * 1983-07-20 1986-03-05 Luigi Tozzi Plasma jet ignition apparatus
US4766855A (en) * 1983-07-20 1988-08-30 Cummins Engine Co., Inc. Plasma jet ignition apparatus
WO1990002261A1 (en) * 1988-08-29 1990-03-08 Robert Bosch Gmbh Ignition circuit with interference suppression
FR2641579A1 (en) * 1989-01-09 1990-07-13 Siemens Bendix Automotive Elec Individual transformer for powering a spark plug for igniting an air-fuel mixture in an internal combustion engine, and ignition device equipped with such a transformer
EP0387992A1 (en) * 1989-03-13 1990-09-19 General Motors Corporation Spark developing apparatus for internal combustion engines
DE10061674A1 (en) * 2000-12-12 2002-06-13 Volkswagen Ag Spark ignition power feed for motor vehicle engine cylinder, has spark electrode extending into combustion chamber and having high frequency transformer connected directly to it

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088412A1 (en) * 1982-03-10 1983-09-14 Karl Dungs GmbH & Co. Automatic gas-firing device
EP0172954A1 (en) * 1983-07-20 1986-03-05 Luigi Tozzi Plasma jet ignition apparatus
US4766855A (en) * 1983-07-20 1988-08-30 Cummins Engine Co., Inc. Plasma jet ignition apparatus
WO1990002261A1 (en) * 1988-08-29 1990-03-08 Robert Bosch Gmbh Ignition circuit with interference suppression
FR2641579A1 (en) * 1989-01-09 1990-07-13 Siemens Bendix Automotive Elec Individual transformer for powering a spark plug for igniting an air-fuel mixture in an internal combustion engine, and ignition device equipped with such a transformer
EP0387992A1 (en) * 1989-03-13 1990-09-19 General Motors Corporation Spark developing apparatus for internal combustion engines
DE10061674A1 (en) * 2000-12-12 2002-06-13 Volkswagen Ag Spark ignition power feed for motor vehicle engine cylinder, has spark electrode extending into combustion chamber and having high frequency transformer connected directly to it

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