EP0069993B1 - Spark plug to operate an internal-combustion engine - Google Patents

Spark plug to operate an internal-combustion engine Download PDF

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Publication number
EP0069993B1
EP0069993B1 EP82106099A EP82106099A EP0069993B1 EP 0069993 B1 EP0069993 B1 EP 0069993B1 EP 82106099 A EP82106099 A EP 82106099A EP 82106099 A EP82106099 A EP 82106099A EP 0069993 B1 EP0069993 B1 EP 0069993B1
Authority
EP
European Patent Office
Prior art keywords
space
electrode
spark plug
combustion engine
internal
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
Application number
EP82106099A
Other languages
German (de)
French (fr)
Other versions
EP0069993A1 (en
Inventor
Marcel Blanchard
J. Edgar Dr. Casel
Wolfram Wahle
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0069993A1 publication Critical patent/EP0069993A1/en
Application granted granted Critical
Publication of EP0069993B1 publication Critical patent/EP0069993B1/en
Expired 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
    • F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/46—Sparking plugs having two or more spark gaps
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/46—Sparking plugs having two or more spark gaps
    • H01T13/467—Sparking plugs having two or more spark gaps in parallel connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber

Definitions

  • the invention relates to a spark plug for operating an internal combustion engine with a closed chamber-like electrode space surrounding the electrode area, which is connected via an even number of connecting channels to a space which faces the cylinder space of the internal combustion engine.
  • a device of the generic type is described in US-A-20 08 298.
  • an electrode is arranged in an electrode space, which is connected via connecting channels to a chamber which tapers in the direction of the cylinder space.
  • the chamber has a passage opening to the cylinder space, a passage being created through this passage opening and the chamber with the connecting channels to the electrode space, which prevents oil or pollutants from entering the electrode space.
  • this chamber which has the passage opening to the cylinder space of the internal combustion engine, is intended to serve as a buffer chamber which creates a cushion of inert gases during the compression stroke, as a result of which combustion gases cannot reach the electrode chamber and the ignition electrode.
  • a spark plug described in DE-C-661 768 has a space surrounding the electrode area, which is connected to the cylinder space of the piston-cylinder arrangement via a venturi-like channel arrangement.
  • the shape of the ignition chamber is intended to achieve complete combustion of the mixture within the ignition chamber, so that the gases enter the cylinder without the addition of semi-burned fuel.
  • Spiral-shaped grooves in the double-conical ignition chambers give the jet of burning gases the direction as a scatter or flame after the mixture has ignited in the prechamber. Due to the special design of the ground electrode, sparking should always be achieved, since the sparking can take place over the entire length of the ground electrode ends, so that even heavy incrustations of the electrode ends cannot interfere.
  • the invention is based on the object to improve the spark plugs belonging to the prior art in such a way that higher densities can be achieved without the ignition spark extinguishing.
  • the space has the shape of a half ellipsoid of revolution that widens towards the cylinder space and that the electrode space is connected to the space via a main connecting channel and the even number of connecting channels are connected to the main connecting channel via incisions .
  • the ring-shaped ground electrode is divided into as many parts as there are connecting channels. This gives the connecting channels the property of resonating caves. Two successive caves oscillate in phases in opposition to each other when ignited.
  • Fig. 1, 1 generally designates a spark plug, which is fixed by means of a fastening thread 2, 3 designating the actual spark plug body.
  • an electrode space 6 is formed, which is connected via connection channels 4 to a space 5 adjoining the cylinder space, the latter space 5, as can be seen more clearly from FIG. 2, in the form of a half ellipsoid of revolution.
  • connection of the electrode space 6 to the space 5 takes place via a main connection channel 7 and via the named connection channels 4, which are provided in an even number, i. H. that is, in a number that can be divided by two.
  • connection channels 4 are connected to the main connection channel 7 via incisions 8. These incisions divide the ring-shaped ground electrode into as many parts as connecting channels 4 are provided.
  • the connecting channels 4 thus acquire the property of resonating caves or chambers or cavities. Two successive rooms oscillate when the ignition is in opposite phases.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spark Plugs (AREA)

Description

Die Erfindung bezieht sich auf eine Zündkerze zum Betreiben eines Verbrennungsmotors mit einem den Elektrodenbereich umgebenden geschlossenen kammerartig ausgebildeten Elektrodenraum, der über eine eine gerade Anzahl aufweisender Verbindungskanäle mit einem Raum in Verbindung steht, der dem Zylinderraum des Verbrennungsmotors zugewandt ist.The invention relates to a spark plug for operating an internal combustion engine with a closed chamber-like electrode space surrounding the electrode area, which is connected via an even number of connecting channels to a space which faces the cylinder space of the internal combustion engine.

Eine Einrichtung der gattungsgemäßen Art ist in der US-A-20 08 298 beschrieben. Bei dieser bekannten Anordnung ist eine Elektrode in einem Elektrodenraum angeordnet, der über Verbindungskanäle mit einer Kammer in Verbindung steht, die sich in Richtung zum Zylinderraum hin verjüngend ausgebildet ist. Die Kammer weist eine Durchtrittsöffnung zum Zylinderraum auf, wobei durch diese Durchtrittsöffnung und die Kammer mit den Verbindungskanälen zum Elektrodenraum ein Labyrinth geschaffen werden soll, das verhindert, daß Öl oder Schadstoffe in den Elektrodenraum gelangen. Gleichzeitig soll diese die Durchtrittsöffnung zum Zylinderraum des Verbrennungsmotors aufweisende Kammer als Pufferkammer dienen, die beim Kompressionshub ein Kissen inerter Gase schafft, wodurch Verbrennungsgase nicht bis in die Elektrodenkammer und an die Zündelektrode gelangen können.A device of the generic type is described in US-A-20 08 298. In this known arrangement, an electrode is arranged in an electrode space, which is connected via connecting channels to a chamber which tapers in the direction of the cylinder space. The chamber has a passage opening to the cylinder space, a passage being created through this passage opening and the chamber with the connecting channels to the electrode space, which prevents oil or pollutants from entering the electrode space. At the same time, this chamber, which has the passage opening to the cylinder space of the internal combustion engine, is intended to serve as a buffer chamber which creates a cushion of inert gases during the compression stroke, as a result of which combustion gases cannot reach the electrode chamber and the ignition electrode.

Eine in der DE-C-661 768 beschriebene Zündkerze weist einen den Elektrodenbereich umgebenden Raum auf, der über eine venturidüsenartige Kanalanordnung mit dem Zylinderraum der Kolbenzylinderanordnung in Verbindung steht. Durch die Form der Zündkammer soll eine vollständige Verbrennung des Gemisches innerhalb der Zündkammer erzielt werden, so daß die Gase ohne Beimischung von halbverbranntem Betriebsstoff in den Zylinder gelangen. Schraubengangförmige Nuten in den doppelkonischen Zündkammern geben dem Strahl brennender Gase die Richtung als Streu- bzw. Stichflamme nach der Entzündung des Gemisches in der Vorkammer. Durch die besondere Ausbildung der Masseelektrode sollen immer Funkenbildungen erzielt werden, da die Funkenbildung auf der ganzen Länge der Masseelektrodenenden erfolgen kann, so daß auch schwere Verkrustungen der Elektrodenenden nicht stören können.A spark plug described in DE-C-661 768 has a space surrounding the electrode area, which is connected to the cylinder space of the piston-cylinder arrangement via a venturi-like channel arrangement. The shape of the ignition chamber is intended to achieve complete combustion of the mixture within the ignition chamber, so that the gases enter the cylinder without the addition of semi-burned fuel. Spiral-shaped grooves in the double-conical ignition chambers give the jet of burning gases the direction as a scatter or flame after the mixture has ignited in the prechamber. Due to the special design of the ground electrode, sparking should always be achieved, since the sparking can take place over the entire length of the ground electrode ends, so that even heavy incrustations of the electrode ends cannot interfere.

Bei beiden bekannten Anordnungen ist somit die Zündelektrode gegen Ölverkrustungen geschützt.In both known arrangements, the ignition electrode is thus protected against oil encrustation.

Der Erfindung liegt demgegenüber die Aufgabe zugrunde, die zum Stand der Technik gehörenden Zündkerzen dahingehend zu verbessern, daß höhere Verdichtungen zu erreichen sind, ohne daß der Zündfunke erlischt.The invention is based on the object to improve the spark plugs belonging to the prior art in such a way that higher densities can be achieved without the ignition spark extinguishing.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Raum die Form eines halben, zum Zylinderraum hin sich erweiternden Rotationsellipsoides aufweist und daß der Elektrodenraum mit dem Raum über einen Hauptverbindungskanal in Verbindung steht und die die gerade Anzahl aufweisenden Verbindungskanäle über Einschnitte mit dem Hauptverbindungskanal in Verbindung stehen.This object is achieved according to the invention in that the space has the shape of a half ellipsoid of revolution that widens towards the cylinder space and that the electrode space is connected to the space via a main connecting channel and the even number of connecting channels are connected to the main connecting channel via incisions .

Dadurch, daß die Verbindungskanäle zwischen dem Elektrodenraum und dem venturidüsenartigen Raum über Einschnitte mit dem Hauptverbindungskanal in Verbindung stehen, wird die ringförmige Masseelektrode in ebensoviel Teile wie Verbindungskanäle vorhanden sind geteilt. Hierdurch bekommen die Verbindungskanäle die Eigenschaft resonierender Höhlen. Zwei aufeinanderfolgende Höhlen oszillieren bei der Zündung in Phasen, die in Opposition stehen.Because the connecting channels between the electrode space and the venturi-like space are connected to the main connecting channel via incisions, the ring-shaped ground electrode is divided into as many parts as there are connecting channels. This gives the connecting channels the property of resonating caves. Two successive caves oscillate in phases in opposition to each other when ignited.

Durch die erfindungsgemäße Kerze werden eine sogenannte « heiße und eine sogenannte « kalte » Anwendung gewährleistet:

  • Die « heiße Anwendung erfolgt, weil die Rückstände in dem Elektrodenraum vollständig verbrannt werden. Die « kalte Anwendung wird dadurch bedingt, daß über die massiven Masseelektroden ein rascher Wärmeaustausch erfolgt. Hierdurch wird die Bildung vereinzelter Wärmestellen ausgeschaltet, so daß bei einem derart ausgerüsteten Motor höhere Kompressionen möglich sind.
The candle according to the invention ensures a so-called “hot” and a “cold” application:
  • The «hot application takes place because the residues in the electrode space are completely burned off. The «cold application is caused by the rapid exchange of heat via the massive earth electrodes. As a result, the formation of isolated heat spots is switched off, so that higher compressions are possible with an engine equipped in this way.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung erläutert. Diese zeigt dabei in

  • Figur 1 eine Zündkerze, in
  • Figur 2 in größerer Darstellung den unteren Bereich des Zündkerzenkörpers und in
  • Figur 3 einen Radialschnitt durch den unteren Teil des Zündkerzenkörpers gemäß Fig. 2.
An embodiment of the invention is explained below with reference to the drawing. This shows in
  • 1 shows a spark plug, in
  • Figure 2 in a larger representation the lower region of the spark plug body and in
  • 3 shows a radial section through the lower part of the spark plug body according to FIG. 2.

In Fig. 1 ist mit 1 allgemein eine Zündkerze bezeichnet, die über ein Befestigungsgewinde 2 festgelegt wird, wobei mit 3 der eigentliche Zündkerzenkörper bezeichnet ist.In Fig. 1, 1 generally designates a spark plug, which is fixed by means of a fastening thread 2, 3 designating the actual spark plug body.

In dem Zündkerzenkörper ist ein Elektrodenraum 6 ausgeformt, der über Verbindungskanäle 4 mit einem an den Zylinderraum angrenzenden Raum 5 in Verbindung steht, wobei letzterer Raum 5, wie dies deutlicher aus Fig. 2 zu ersehen ist, in Form eines halben Rotationsellipsoides ausgebildet ist.In the spark plug body, an electrode space 6 is formed, which is connected via connection channels 4 to a space 5 adjoining the cylinder space, the latter space 5, as can be seen more clearly from FIG. 2, in the form of a half ellipsoid of revolution.

Die Verbindung des Elektrodenraumes 6 mit dem Raum 5 erfolgt über einen Hauptverbindungskanal 7 und über die genannten Verbindungskanäle 4, die in einer geraden Anzahl vorgesehen werden, d. h. also in einer jeweils durch zwei teilbaren Anzahl.The connection of the electrode space 6 to the space 5 takes place via a main connection channel 7 and via the named connection channels 4, which are provided in an even number, i. H. that is, in a number that can be divided by two.

Die Verbindungskanäle 4 sind über Einschnitte 8 mit dem Hauptverbindungskanal 7 verbunden. Diese Einschnitte teilen die ringförmige Masseelektrode in ebensoviel Teile wie Verbindungskanäle 4 vorgesehen sind. Somit erhalten die Verbindungskanäle 4 die Eigenschaft resonierender Höhlen oder Kammern oder Hohlräume. Zwei aufeinanderfolgende Räume oszillieren bei Zündung in Opposition stehenden Phasen.The connection channels 4 are connected to the main connection channel 7 via incisions 8. These incisions divide the ring-shaped ground electrode into as many parts as connecting channels 4 are provided. The connecting channels 4 thus acquire the property of resonating caves or chambers or cavities. Two successive rooms oscillate when the ignition is in opposite phases.

Claims (1)

  1. Spark plug to operate an internal-combustion engine, with an electrode space (6) which is closed and which is formed as a chamber and surrounds the electrode region, said space communicating through an even number of communicating ducts (4) with a space (5) facing towards the cylinder chamber of the internal-combustion engine, characterised in that the space (5) is in the form of a half ellipsoid of revolution widening towards the cylinder chamber, and that the electrode space (6) communicates with the space (5) through a main communicating duct (7), and the even number of communicating ducts (4) communicate with the main communicating duct (7) by means of slits (8).
EP82106099A 1981-07-09 1982-07-08 Spark plug to operate an internal-combustion engine Expired EP0069993B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3127094 1981-07-09
DE3127094A DE3127094C2 (en) 1981-07-09 1981-07-09 Spark plug for operating an internal combustion engine

Publications (2)

Publication Number Publication Date
EP0069993A1 EP0069993A1 (en) 1983-01-19
EP0069993B1 true EP0069993B1 (en) 1985-10-09

Family

ID=6136487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106099A Expired EP0069993B1 (en) 1981-07-09 1982-07-08 Spark plug to operate an internal-combustion engine

Country Status (3)

Country Link
EP (1) EP0069993B1 (en)
DE (2) DE3127094C2 (en)
WO (1) WO1983000262A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232995A1 (en) * 1981-07-09 1984-03-08 Marcel 68390 Sausheim-Battenheim Blanchard Spark plug for operating an internal-combustion engine
AU692265B2 (en) * 1994-07-01 1998-06-04 Sixes And Sevens Pty Ltd An improved spark plug system
US5734222A (en) * 1994-07-01 1998-03-31 Sixes And Sevens Pty Ltd Spark plug system
EP1984993B1 (en) * 2006-02-17 2013-08-28 GE Jenbacher GmbH & Co. OHG Sparkplug
US9172217B2 (en) 2010-11-23 2015-10-27 Woodward, Inc. Pre-chamber spark plug with tubular electrode and method of manufacturing same
US9476347B2 (en) * 2010-11-23 2016-10-25 Woodward, Inc. Controlled spark ignited flame kernel flow in fuel-fed prechambers
US9088137B2 (en) 2011-07-19 2015-07-21 Nano Spark Inc. Spark plug
US9112334B2 (en) 2011-07-19 2015-08-18 Nano Spark Inc. Spark plug construction

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE661768C (en) * 1938-06-27 Gustav Ruthardt Spark plug
US1390014A (en) * 1919-06-09 1921-09-06 Brewster Goldsmith Corp Inc Spark-plug
US2008298A (en) * 1933-01-06 1935-07-16 Woods-Humphery George Edward Sparking plug for internal combustion engines
DE695712C (en) * 1937-09-02 1940-08-31 Franz Alfred Moeser Spark plug
GB726257A (en) * 1953-04-22 1955-03-16 Rosebillee Chapman Kirkhouse Improvements in spark plugs
DE1426177B2 (en) * 1960-12-23 1970-04-30 Fabbrica Italiana Magneti Marelli S.P.A., Mailand (Italien) Air sliding spark plug

Also Published As

Publication number Publication date
EP0069993A1 (en) 1983-01-19
DE3266808D1 (en) 1985-11-14
DE3127094C2 (en) 1983-11-03
DE3127094A1 (en) 1983-01-27
WO1983000262A1 (en) 1983-01-20

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