EP0859437B1 - Méthode pour fixer une électrode de masse au corps métallique d'une bougie d'allumage - Google Patents

Méthode pour fixer une électrode de masse au corps métallique d'une bougie d'allumage Download PDF

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Publication number
EP0859437B1
EP0859437B1 EP98101913A EP98101913A EP0859437B1 EP 0859437 B1 EP0859437 B1 EP 0859437B1 EP 98101913 A EP98101913 A EP 98101913A EP 98101913 A EP98101913 A EP 98101913A EP 0859437 B1 EP0859437 B1 EP 0859437B1
Authority
EP
European Patent Office
Prior art keywords
spark plug
electrode
ground electrode
plug body
earth electrode
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
EP98101913A
Other languages
German (de)
English (en)
Other versions
EP0859437A1 (fr
Inventor
Harald Knoll
Erwin Schneck
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.)
BorgWarner Ludwigsburg GmbH
Original Assignee
Beru 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 Beru AG filed Critical Beru AG
Publication of EP0859437A1 publication Critical patent/EP0859437A1/fr
Application granted granted Critical
Publication of EP0859437B1 publication Critical patent/EP0859437B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs

Definitions

  • the invention relates to a method for attaching a In the form of a ring electrode or in the form of multi-pole side electrodes trained ground electrode on the metallic spark plug body a spark plug with axially arranged in the spark plug body Center electrode.
  • a method according to the preamble of the claim is from US-A-5,408,961 known.
  • Spark plugs with axial in a metallic spark plug body arranged center electrode and a ground electrode, between them an ignition gap for the formation of an ignition spark form, are known per se and available on the market.
  • ground electrode is centric, i.e. concentric is attached to the axis of the spark plug body, otherwise the electrode spacing is uneven along the circumference of the ground electrode would.
  • the ground electrode by punching out a metallic Tape and prefabricated by appropriate shaping and then welded to the metallic spark plug body.
  • the ground electrode must be inside and be deburred on the outside, while still having problems with the centric Punch out and centrically weld on the ground electrode occur on the spark plug body.
  • These problems cause the ground electrode, especially at least the Drilling a ring electrode after attaching it to the spark plug body must be punched out to ensure the concentricity of the ground electrode especially the ring of the ring electrode to the axis of the spark plug body and thus a uniform electrode spacing ensure.
  • the object underlying the invention is therefore in developing the method of the type mentioned at the beginning, that there is a re-punching of the ground electrode after it has been attached on the spark plug body.
  • centering is designed as an open groove in the axial direction becomes, Welding cams on the prefabricated ground electrode and the ground electrode with the molded welding cams in the centering groove inserted in the spark plug body and welded to it.
  • the method according to the invention is suitable for spark plugs with ring electrode or multiple ground electrodes, in particular for two-, three- and four-pole spark plugs.
  • FIG. 1 is a partial sectional view of the electrode configuration a spark plug with a metallic spark plug body 1, in the center of a ceramic insulator 2 is arranged.
  • the insulator 2 is above the front edge of the spark plug body 1 into the combustion chamber of the internal combustion engine in front.
  • a center electrode 3 is provided, which together with a Ring electrode formed ground electrode 4 an ignition gap ZS for the formation of an ignition spark.
  • the ground electrode 4 is electrically connected to and encloses the spark plug body 1 the entire circumference of the center electrode 3.
  • ground electrode 4 formed as a ring electrode and the to ensure opposite end of the center electrode 3 it is necessary that the ground electrode 4 is exactly concentric to the axis of the spark plug or the spark plug body 1 on this is appropriate.
  • spark plug body 1 to the axis of the spark plug body 1 and thus centering groove concentric with the axis of the center electrode 3 11 trained.
  • the ground electrode 4 is, for example prefabricated by punching out of a metal band and attached their feet with sweat cams that are molded onto them become. The ground electrode 4 is then in with the welding cams the centering groove 11 provided in the spark plug body 1 is used and welded to it.
  • centering groove 11 Due to the formation of the centering groove 11 is a precise and simple centering of the ground electrode 4 on the spark plug body 1 ensures that the ground electrode is complete can be prefabricated and re-punched after they have been attached on the spark plug body 1 is omitted.
  • the welds on the prefabricated ground electrode 4 still do not have to be deburred, because welding cams on it are provided, the material of which is welded into the centering groove 11 flows.
  • the above procedure involves fewer operations and leads due to the central assembly of the ground electrode 4 into one uniform electrode spacing and for uniform heat dissipation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Spark Plugs (AREA)

Claims (1)

  1. Procédé pour rapporter une électrode de masse, conçue sous forme d'une électrode annulaire ou sous forme d'électrodes latérales multipolaires, sur un corps métallique d'une bougie d'allumage comportant une électrode médiane disposée axialement dans le corps de la bougie d'allumage,
       dans le cas duquel est prévu, dans le corps (1) de la bougie d'allumage, un moyen de centrage, concentrique à l'axe du corps (1) de la bougie d'allumage, pour l'électrode de masse (4), caractérisé par le fait que
    le moyen de centrage est conçu, sous forme d'une gorge (11) ouverte selon la direction axiale,
    des bossages de soudage sont formés sur l'électrode de masse préfabriquée et
    on introduit l'électrode de masse, avec les bossages de soudage formés, dans la gorge de centrage prévue dans le corps de la bougie d'allumage et on l'y soude.
EP98101913A 1997-02-12 1998-02-04 Méthode pour fixer une électrode de masse au corps métallique d'une bougie d'allumage Expired - Lifetime EP0859437B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19705373A DE19705373C2 (de) 1997-02-12 1997-02-12 Verfahren zum Anbringen einer Masseelektrode am Zündkerzenkörper einer Zündkerze
DE19705373 1997-02-12

Publications (2)

Publication Number Publication Date
EP0859437A1 EP0859437A1 (fr) 1998-08-19
EP0859437B1 true EP0859437B1 (fr) 2001-05-16

Family

ID=7820039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98101913A Expired - Lifetime EP0859437B1 (fr) 1997-02-12 1998-02-04 Méthode pour fixer une électrode de masse au corps métallique d'une bougie d'allumage

Country Status (4)

Country Link
EP (1) EP0859437B1 (fr)
AT (1) ATE201289T1 (fr)
DE (2) DE19705373C2 (fr)
ES (1) ES2157098T3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6326719B1 (en) * 1999-06-16 2001-12-04 Alliedsignal Inc. Spark plug shell having a bimetallic ground electrode spark plug incorporating the shell, and method of making same
US6080029A (en) 1999-08-05 2000-06-27 Halo, Inc. Method of manufacturing a spark plug with ground electrode concentrically disposed to a central electrode
DE102006033578A1 (de) * 2006-07-20 2008-01-31 Beru Ag Zündeinrichtung, insbesondere Zündkerze für eine Verbrennungskraftmaschine und Verfahren zur Positionierung von wenigstens einer Masseelektrode in der Zündeinrichtung
DE102006041161A1 (de) * 2006-09-01 2008-03-06 Bayerische Motoren Werke Ag Zündkerze für einen Wasserstoff-Verbrennungsmotor
US10826279B1 (en) 2019-08-28 2020-11-03 Federal-Mogul Ignition Llc Spark plug ground electrode configuration

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2360279A (en) * 1942-04-22 1944-10-10 Gen Motors Corp Method of making spark plugs
US2377481A (en) * 1943-03-23 1945-06-05 Robert K Christie Method of gapping spark plugs
US5408961A (en) * 1993-08-09 1995-04-25 Innovative Automative Technologies Int. Ltd. Ignition plug

Also Published As

Publication number Publication date
ES2157098T3 (es) 2001-08-01
EP0859437A1 (fr) 1998-08-19
ATE201289T1 (de) 2001-06-15
DE19705373C2 (de) 2000-02-03
DE19705373A1 (de) 1998-08-20
DE59800707D1 (de) 2001-06-21

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