EP1385242B1 - Bougie d'allumage - Google Patents

Bougie d'allumage Download PDF

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Publication number
EP1385242B1
EP1385242B1 EP03014237A EP03014237A EP1385242B1 EP 1385242 B1 EP1385242 B1 EP 1385242B1 EP 03014237 A EP03014237 A EP 03014237A EP 03014237 A EP03014237 A EP 03014237A EP 1385242 B1 EP1385242 B1 EP 1385242B1
Authority
EP
European Patent Office
Prior art keywords
center electrode
insulator body
spark plug
sealing ring
plug according
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
EP03014237A
Other languages
German (de)
English (en)
Other versions
EP1385242A1 (fr
Inventor
Christoph Egger
Christian Francesconi
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.)
Innio Jenbacher GmbH and Co OG
Original Assignee
Jenbacher 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 Jenbacher AG filed Critical Jenbacher AG
Priority to AT03014237T priority Critical patent/ATE288632T1/de
Publication of EP1385242A1 publication Critical patent/EP1385242A1/fr
Application granted granted Critical
Publication of EP1385242B1 publication Critical patent/EP1385242B1/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
    • H01T13/00—Sparking plugs
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/34—Sparking plugs characterised by features of the electrodes or insulation characterised by the mounting of electrodes in insulation, e.g. by embedding
    • 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 present invention relates to a spark plug with an insulator body and a Center electrode, which at least partially stored in a bore in the insulator body is, wherein the center electrode by at least one encompassing sealing ring, which has plastically deformable material by pressing, in relation to the Insulator body is sealed.
  • Spark plugs have different configurations in the prior art Middle and base electrode on.
  • the center electrode is usually in one Drilled in an insulator and protrudes beyond this combustion chamber side.
  • the for the longevity and pressure resistance of the spark plug u.a. also crucial Seal between center electrode and insulator body is usually through Introduction of glass-like or other sealing compounds between the center electrode and Insulator body realized. It is important that the sealant is a gas-tight Makes connection.
  • Object of the present invention is therefore to provide a spark plug available in which the desired compressive strength is given.
  • the seal according to the invention initially has the advantage that the production of the Spark plug according to the invention over the prior art significantly simplified becomes.
  • plastically deformable sealing ring but also a very durable and high pressure resistant Sealing between the center electrode and insulator body achieved.
  • further sealing means for sealing the center electrode are dispensed with respect to the insulator body, wherein the sealing ring or the Seals alone for a sufficient and high pressure resistant seal produce.
  • Particularly pressure-resistant are the spark plugs according to the invention, since the Sealing ring by high pressures in the combustion chamber in addition to the Insulator body is pressed and supported on this.
  • the sealing rings to be used for this purpose can fundamentally be made of different types Be made of material.
  • the sealing ring has at least one metal or a Alloy of metals.
  • a particularly durable and high pressure resistant Sealing is achieved when the sealing ring soft iron and / or copper and / or Nickel and / or stainless steel and / or aluminum materials and / or alloys thereof Has materials.
  • a particularly high pressure-tight seal is achieved when the sealing ring in a this partial comprehensive depression of the insulator body rests against this.
  • center electrode carrier can be provided that a mounting ring on the to a combustion chamber of a Internal combustion engine facing end of the center electrode plugged and / or is pressed and / or welded and / or the like, in turn, a Arranged sealing ring between the mounting ring and the insulator body, is preferably clamped. Should not have a center electrode support and no Fixing ring may be provided, so the center electrode can at its in Installation position of the spark plug pointing to the combustion chamber of an internal combustion engine Alternatively, an area enlarged outside the insulator body Have diameter, in which case a sealing ring between the area with arranged enlarged diameter and the insulator body or preferably can be trapped.
  • At least one further sealing ring lies within the insulator body.
  • a favorable variant provides that another sealing ring within the insulator body between a Center electrode embracing shoulder of the insulator body and a range enlarged diameter of the center electrode arranged, preferably is trapped.
  • a center electrode carrier and / or at least one Have fastening ring On the in the installed position of the spark plug to the combustion chamber Internal combustion engine facing end of the center electrode plugged and / or pressed and / or welded, wherein the sealing ring between the center electrode carrier and / or the fastening ring on the one hand and the insulator body on the other hand seals, and plastically deformed.
  • the insulator body 1 is from the spark plug housing. 3 includes and is against this by means of the gaskets 11 gas-tight and pressure-resistant sealed.
  • the spark plug housing 3 has a thread 4 for screwing the Spark plug in the cylinder head.
  • a spark plug connector 12 is provided at the rear end of the Center electrode 2.
  • a ground electrode carrier 5 electrically conductive placed on the spark plug housing 3 and a center electrode carrier. 7 electrically connected to the center electrode 2.
  • the connection between the Center electrode 2 and the center electrode carrier 7 takes place as in the prior art Conveniently known by placing the center electrode carrier 7 on the Center electrode 2 and then pressing and welding the two Components. The sparks occur during operation of the spark plug between the Electrodes 8 of the center electrode carrier 7 and the ground electrodes 6, which are electrically connected to the ground electrode carrier 5 are placed.
  • the center electrode 2 against the insulator body. 1 is preferably sealed only by means of the sealing rings 10.
  • Such a Sealing ring 10 is located in the recess 9 of the insulator body 1 and is between the center electrode carrier 7 and the insulator body 1 is clamped.
  • a second Sealing ring is between a shoulder 15 within the lsolator stresses 1 and a Area 14 of the center electrode 2 clamped with increased diameter.
  • Arrangement of the sealing rings 10 according to the invention may be that in the prior art known use of various e.g. glassy sealants for Seal between the center electrode and insulator body 1 preferably completely omitted.
  • Fig. 2 shows a spark plug, in which no separate Center electrode carrier 7 is used. This example is based on the Center electrode 2 attached a fastening ring 13 and / or pressed and / or welded. Between this mounting ring 13 and the insulator body 1 can in turn, the sealing ring 10 are arranged or clamped in the recess 9.
  • a particularly favorable method for producing a spark plug according to FIG. 1 or Fig. 2 provides that first the center electrode 2 with the addition of a seal 10 'in the insulator body 1 is inserted. Finally, on the center electrode 2 her the combustion chamber facing side of the sealing ring 10 of the invention pushed, so that this lie in the recess 9 of the insulator body 1 comes. The next step is now the center electrode carrier 7 with the previously welded electrodes 8 (preferably noble metal electrodes) or the Fixing ring 13 in the direction of the sealing ring 10 by a not further here Pressing device shown pressed. During this Anpressvorganges is the Center electrode 2 supported on the side facing away from the combustion chamber side.
  • the spark plug housing 3 can in this case be constructed of two parts, after insertion of the insulator body in the area 16 be pressed together and welded together. Then it is still in itself known manner, the ground electrode carrier 5 welded to the housing 3, wherein in advance, the ground electrodes 6 (preferably also made of precious metal) on Ground electrode carrier 5 are welded.
  • the use of a Fixing ring 13 instead of or in addition to a central electrode support 7 has the advantage that the mounting ring 13 is less easily damaged during pressing becomes.
  • the Center electrode 2 is first pressed with a mounting ring 13 and only then the comparatively sensitive center electrode carrier 7 in addition to is fixed to the combustion chamber facing end of the center electrode 2.
  • the center electrode 2 against the insulator body. 1 seal under the inventive use of the sealing ring 10, so that the Invention is not limited to the embodiments shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Claims (13)

  1. Bougie d'allumage composée d'un corps isolant (1) et d'une électrode centrale (2), laquelle est placée au moins en partie dans un alésage se trouvant dans le corps isolant (1), dans laquelle une étanchéité entre l'électrode centrale (2) et le corps isolant (1) est assurée par au moins une bague d'étanchéité (10) qui entoure l'électrode centrale, réalisée en comprimant un matériau facilement déformable, caractérisée en ce que la bague d'étanchéité (10) adhère à l'extérieur du corps isolant (1), à son extrémité pointant, dans la position de montage de la bougie d'allumage, vers une chambre de combustion d'un moteur à combustion interne.
  2. Bougie d'allumage selon la revendication 1, caractérisée en ce que la bague d'étanchéité (10) comporte au moins un métal ou un alliage de métaux.
  3. Bougie d'allumage selon la revendication 1, caractérisée en ce que la bague d'étanchéité (10) comporte au moins un métal choisi dans le groupe constitué du fer doux, du cuivre, du nickel et de l'acier, ou des matériaux d'aluminium ou des alliages de ces matériaux.
  4. Bougie d'allumage selon l'une des revendications 1 à 3, caractérisée en ce que la bague d'étanchéité (10) adhère au corps isolant (1) dans un lamage (9) qui englobe en partie celle-ci.
  5. Bougie d'allumage selon l'une des revendications 1 à 4, dans laquelle un support de l'électrode centrale (7) est monté, engagé par pression ou soudé, ou tout autre procédé analogue, sur l'extrémité de l'électrode centrale (2) pointant, dans la position de montage, vers une chambre de combustion d'un moteur à combustion interne, caractérisée en ce que la bague d'étanchéité (10) est placée ou serrée entre le support de l'électrode centrale (7) et le corps isolant (1).
  6. Bougie d'allumage selon l'une des revendications 1 à 4, dans laquelle une bague de fixation (13) est montée, engagée par pression ou soudée, ou tout autre procédé analogue, sur l'extrémité de l'électrode centrale (2) pointant, dans la position de montage, vers une chambre de combustion d'un moteur à combustion interne, caractérisée en ce que la bague d'étanchéité (10) est placée ou serrée entre la bague de fixation (13) et le corps isolant (1).
  7. Bougie d'allumage selon la revendication 5 ou 6, caractérisée en ce que le support de l'électrode centrale (7) ou la bague de fixation (13) sont soudés à l'électrode centrale (2) à l'aide d'un procédé de soudage au laser continu ou pulsé ou d'un procédé de soudage au tungstène et au gaz inerte ou d'un procédé de soudage au plasma ou d'un procédé de soudage à faisceau électronique ou d'un procédé de soudage par résistance.
  8. Bougie d'allumage selon l'une des revendications 1 à 7, caractérisée en ce que l'électrode centrale (2) comporte, au niveau de son extrémité pointant, dans la position de montage de la bougie, vers la chambre de combustion d'un moteur à combustion interne, une zone (14) d'un plus grand diamètre à l'extérieur du corps isolant (1), et en ce que la bague d'étanchéité (10) est placée ou serrée entre la zone (14) d'un plus grand diamètre et le corps isolant (1).
  9. Bougie d'allumage selon l'une des revendications 1 à 8, caractérisée en ce qu'une bague d'étanchéité supplémentaire (10') est placée ou serrée à l'intérieur du corps isolant (1) entre un chanfrein (15) du corps isolant (1) entourant l'électrode centrale (2) et un épaulement du plus grand diamètre de la zone (14) de l'électrode centrale (2).
  10. Bougie d'allumage selon l'une des revendications 1 à 9, caractérisée en ce que le corps isolant (1) est un corps isolant en céramique.
  11. Bougie d'allumage selon l'une des revendications 1 à 10, caractérisée en ce que l'étanchéité entre l'électrode centrale (2) et le corps isolant est réalisée exclusivement par au moins une bague d'étanchéité (10) l'entourant.
  12. Procédé de fabrication d'une bougie d'allumage selon l'une des revendications 1 à 11, caractérisé en ce que le procédé comporte les étapes suivantes :
    a) introduire l'électrode centrale (2) dans l'alésage prévu à cet effet dans le corps isolant (1), sachant qu'au moins une bague d'étanchéité (10) ou toutes les bagues d'étanchéité est ou sont placée(s) aux endroits prévus à cet effet.
    b) compresser l'électrode centrale avec le corps isolant, sachant que la ou les bague(s) d'étanchéité assure(nt) l'étanchéité entre l'électrode centrale et le corps isolant et est ou sont facilement déformable (s) .
  13. Procédé selon la revendication 12, caractérisé en ce que, au cours de, ou après l'étape b) du procédé, un support de l'électrode centrale ou au moins une bague de fixation est monté (e) ou engagé(e) par pression et/ou soudé(e) sur l'extrémité de l'électrode centrale pointant, dans la position de montage de la bougie d'allumage, vers la chambre de combustion d'un moteur à combustion interne, sachant que la bague d'étanchéité assure l'étanchéité entre le support de l'électrode centrale ou la bague de fixation d'une part et le corps isolant d'autre part, et est facilement déformable.
EP03014237A 2002-07-22 2003-06-25 Bougie d'allumage Expired - Lifetime EP1385242B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT03014237T ATE288632T1 (de) 2002-07-22 2003-06-25 Zündkerze

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT11072002 2002-07-22
AT11072002 2002-07-22

Publications (2)

Publication Number Publication Date
EP1385242A1 EP1385242A1 (fr) 2004-01-28
EP1385242B1 true EP1385242B1 (fr) 2005-02-02

Family

ID=29783652

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03014237A Expired - Lifetime EP1385242B1 (fr) 2002-07-22 2003-06-25 Bougie d'allumage

Country Status (8)

Country Link
US (1) US7105991B2 (fr)
EP (1) EP1385242B1 (fr)
JP (1) JP2004103565A (fr)
AT (1) ATE288632T1 (fr)
DE (1) DE50300292D1 (fr)
DK (1) DK1385242T3 (fr)
ES (1) ES2235130T3 (fr)
MX (1) MXPA03006513A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006043593B3 (de) * 2006-09-16 2008-04-10 Multitorch Gmbh Zündkerze
AT506140B1 (de) * 2007-11-05 2009-11-15 Francesconi Christian Zündkerze
DE102008040285A1 (de) * 2008-07-09 2010-01-14 Robert Bosch Gmbh Bauraumoptimierte Zündkerze
CN103647218B (zh) * 2013-12-11 2016-01-27 何惠元 多间隙火花塞
JP6143710B2 (ja) * 2014-05-21 2017-06-07 日本特殊陶業株式会社 スパークプラグ
DE102017202238B3 (de) * 2017-02-13 2018-02-08 Dkt Verwaltungs-Gmbh Zündkerze und ein Verfahren zur Herstellung einer Zündkerze

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR919328A (fr) * 1945-09-05 1947-03-05 Perfectionnements aux bougies d'allumage
US3567987A (en) * 1968-06-06 1971-03-02 Gerald L Schnurmacher Spark plug construction
US3569765A (en) * 1969-01-10 1971-03-09 Forest J Moray Spark plug with cuplike center electrode
FR2329088A1 (fr) * 1975-10-21 1977-05-20 Djeddah Jacques Bougie ou electrode d'allumage pour bruleur
US4193012A (en) * 1978-10-10 1980-03-11 Champion Spark Plug Company Spark plug seal
US4563158A (en) * 1983-04-27 1986-01-07 Allied Corporation Fuel ignition device and method of assembling same
JPH06101362B2 (ja) 1988-05-16 1994-12-12 日本特殊陶業株式会社 内燃機関用スパークプラグの製造方法
US5569971A (en) * 1994-03-31 1996-10-29 Clifford; Gerald R. Readily assembled spark electrode

Also Published As

Publication number Publication date
DK1385242T3 (da) 2005-06-06
DE50300292D1 (de) 2005-03-10
US7105991B2 (en) 2006-09-12
MXPA03006513A (es) 2004-12-03
JP2004103565A (ja) 2004-04-02
US20050174026A1 (en) 2005-08-11
EP1385242A1 (fr) 2004-01-28
ES2235130T3 (es) 2005-07-01
ATE288632T1 (de) 2005-02-15

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