EP0464353A1 - Zündkerze - Google Patents

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Publication number
EP0464353A1
EP0464353A1 EP91108246A EP91108246A EP0464353A1 EP 0464353 A1 EP0464353 A1 EP 0464353A1 EP 91108246 A EP91108246 A EP 91108246A EP 91108246 A EP91108246 A EP 91108246A EP 0464353 A1 EP0464353 A1 EP 0464353A1
Authority
EP
European Patent Office
Prior art keywords
electrode
spark plug
ignition
gap
bridge
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Withdrawn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
EP91108246A
Other languages
German (de)
English (en)
French (fr)
Inventor
Erich Pöhlmann
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.)
Didier Werke AG
Original Assignee
Didier Werke AG
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 Didier Werke AG filed Critical Didier Werke AG
Publication of EP0464353A1 publication Critical patent/EP0464353A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01T13/462—Sparking plugs having two or more spark gaps in series connection

Definitions

  • the invention relates to a spark plug for igniting a fuel-air mixture, e.g. in Otto engines, with a central electrode which can be subjected to a high-voltage ignition current at the specified ignition point and a, e.g. welded to a metal housing, ground electrode, at least one electrode gap being provided between the center electrode and the ground electrode.
  • spark plugs With such commercially available spark plugs, one spark is generated per spark plug. Ignition devices are also known, in which several ignition sparks can be made in a series connection with only one ignition coil, and in which several bores in the cylinder head are required, with greater effort. Such ignition devices have not proven successful.
  • the advantage of two ignition sparks includes in that the fuel-air mixture is better utilized in the combustion process and, for this reason, fewer pollutants, in particular less CO, are produced. Petrol consumption is also significantly lower. If the advantage of multiple sparks is to be achieved, two commercially available spark plugs with two commercially available ignition coils and associated contacts are used instead. Racing engines are occasionally already equipped with three spark plugs, for which the engine must also be modified accordingly.
  • the object of the present invention is to improve the ignition quality of a spark plug effectively and with little effort.
  • the spark plug has at least one intermediate electrode which is arranged in an electrically insulated manner with respect to the center electrode and the ground electrode and which forms at least one electrode gap with both the center electrode and the ground electrode.
  • the ignition quality can only be improved by replacing the commercially available spark plug with one of the type according to the invention, since at least two ignition sparks (one ignition spark per electrode gap) are produced with the same, unchanged ignition device.
  • a spark plug according to the invention can be adapted to any existing engine with a suitably designed heat value.
  • the intermediate electrode is designed with its two ends in an electrically insulating, e.g. ceramic material formed bridge.
  • the conventional shape of the spark plug can then be retained with simple manufacture if the insulating material is arranged in the form of a bed in recesses in the metal housing. This ensures reliable holding of the ends of the bridge-shaped intermediate electrode.
  • first electrode gap is formed between the end face of the central electrode and the middle section of the bridge-shaped intermediate electrode and the second electrode gap is formed between the end face of the ground electrode and a shoulder projecting laterally from the middle section of the bridge-shaped intermediate electrode.
  • the spark plug according to the invention has a center electrode 2 which is accommodated in an insulating body 1 and to which the high-voltage ignition current is applied at a fixed ignition point.
  • a ground electrode 3 angled inward at its free end is welded to the metal housing 5 of the spark plug.
  • the ground electrode 3 is connected to the ground of the motor via the screw thread 12.
  • the middle section 9 of the bridge-shaped intermediate electrode 4 forms with the end face 8 of the middle electrode 2 a first electrode gap S 1 and, as can be seen from FIG. 2, the end face 10 of the ground electrode 3 with the end face of a side extension 11 in the middle section 9 of the bridge-shaped intermediate electrode 4 a second electrode gap S 2 .
  • the widths of the electrode column S 1 , S 2 can be the same, but can also be different.

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  • Spark Plugs (AREA)
EP91108246A 1990-07-02 1991-05-22 Zündkerze Withdrawn EP0464353A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19904020922 DE4020922A1 (de) 1990-07-02 1990-07-02 Zuendkerze
DE4020922 1990-07-02

Publications (1)

Publication Number Publication Date
EP0464353A1 true EP0464353A1 (de) 1992-01-08

Family

ID=6409441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91108246A Withdrawn EP0464353A1 (de) 1990-07-02 1991-05-22 Zündkerze

Country Status (2)

Country Link
EP (1) EP0464353A1 (enExample)
DE (1) DE4020922A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017202482A1 (de) * 2016-05-23 2017-11-30 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Zündkerze für eine hochfrequenz-zündanlage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE500948A (enExample) *
US1913712A (en) * 1932-03-11 1933-06-13 American Gyro Company Spark plug
GB1419690A (enExample) * 1973-03-05 1975-12-31

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1205422A (en) * 1916-02-07 1916-11-21 Carl F Arnold Spark-plug.
US1576176A (en) * 1924-03-10 1926-03-09 Harmon E Corey Spark plug
GB1416690A (en) * 1972-01-07 1975-12-03 Bailey Meters Controls Ltd Position regulating systems
JPS52133430A (en) * 1976-04-30 1977-11-08 Nissan Motor Co Ltd Ignition plug
WO1986003067A1 (en) * 1984-11-17 1986-05-22 Dawson Royalties Limited Spark plug

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE500948A (enExample) *
US1913712A (en) * 1932-03-11 1933-06-13 American Gyro Company Spark plug
GB1419690A (enExample) * 1973-03-05 1975-12-31

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017202482A1 (de) * 2016-05-23 2017-11-30 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Zündkerze für eine hochfrequenz-zündanlage
US10971902B2 (en) 2016-05-23 2021-04-06 Rosenberger Hochfrequenztechnik Gmbh Spark plug for a high frequency ignition system

Also Published As

Publication number Publication date
DE4020922A1 (de) 1992-01-16
DE4020922C2 (enExample) 1992-04-23

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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

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17P Request for examination filed

Effective date: 19910607

AK Designated contracting states

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

17Q First examination report despatched

Effective date: 19920310

STAA Information on the status of an ep patent application or granted ep patent

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18W Application withdrawn

Withdrawal date: 19920828