EP1158632B1 - Electrode centrale munie d'un armement en métal noble - Google Patents

Electrode centrale munie d'un armement en métal noble Download PDF

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Publication number
EP1158632B1
EP1158632B1 EP01102256A EP01102256A EP1158632B1 EP 1158632 B1 EP1158632 B1 EP 1158632B1 EP 01102256 A EP01102256 A EP 01102256A EP 01102256 A EP01102256 A EP 01102256A EP 1158632 B1 EP1158632 B1 EP 1158632B1
Authority
EP
European Patent Office
Prior art keywords
noble metal
tapered
centre electrode
metal wire
spark tip
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
EP01102256A
Other languages
German (de)
English (en)
Other versions
EP1158632A1 (fr
Inventor
Werner Niessner
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 EP1158632A1 publication Critical patent/EP1158632A1/fr
Application granted granted Critical
Publication of EP1158632B1 publication Critical patent/EP1158632B1/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
    • H01T13/39—Selection of materials for electrodes
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/49147—Assembling terminal to base
    • Y10T29/49149—Assembling terminal to base by metal fusion bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49174—Assembling terminal to elongated conductor
    • Y10T29/49179—Assembling terminal to elongated conductor by metal fusion bonding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
    • Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
    • Y10T29/49213—Metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/49218—Contact or terminal manufacturing by assembling plural parts with deforming

Definitions

  • the invention relates to a center electrode with precious metal reinforcement and a process for their manufacture.
  • Center electrodes with precious metal reinforcement are preferably used for high voltage ignition used, the reinforcement for example by inserting precious metal balls, platelets, pins into the center electrode by welding. manufacturing of the precious metal items and their introduction into the center electrode is very complex in terms of process engineering.
  • center electrodes Another disadvantage of known center electrodes is in that the welding zone between the precious metal and the nickel alloy, which is usually the basis of Center electrodes is hot gas corrosion and spark erosion is exposed, so because of the resulting Damage the life expectancy is limited.
  • the object underlying the invention is therefore in it, a center electrode with precious metal reinforcement, the a long service life, good cold start properties and one low voltage requirement even after long engine runtimes has, as well as a method for producing such To create center electrode.
  • the inventive Center electrode made of a good heat conductor Core 1, for example made of copper, and a jacket 2 hot gas corrosion-resistant material, preferably nickel-based alloy.
  • the center electrode has a tapered ignition tip 2a on, this area having a diameter of about 2 mm or less.
  • the center electrode is on the ignition side a section 3a of a precious metal wire 3, in particular made of platinum, provided as reinforcement.
  • the ignition side Edge area 5 of section 3a is formed with sharp edges.
  • the diameter of the precious metal section 3a corresponds here the diameter of the tapered ignition tip 2a of the center electrode.
  • Precious metal section 3a and tapered ignition tip 2a are flat on their contact surface by butt welding processes, such as resistance welding or friction welding and on the outer circumference by radiation welding such as laser welding welded.
  • the electrode wire first is welded flat to the ignition tip 2a, after cutting the electrode wire by means of radiation welding on the outer circumference in the area of the contact surface an alloy region 6 is formed, in which the materials of the Precious metal section 3a and the tapered firing tip 2a to an alloy of both are fused.
  • the height H of the precious metal section 3a about 0.5 mm.
  • a method for producing the invention The center electrode is shown schematically in FIG. 2.
  • the method according to the invention is extremely advantageous by the fact that instead of making individual Precious metal inserts, as described at the beginning, Precious metal continuous wire can be used which is essential is easier and less manageable.
  • Cutting off the continuous wire allows training sharp edges with appropriate cutting tools; these sharp cut edges are on repeat starts and Cold starts are particularly effective because they require voltage is lowered.
  • the life expectancy of the center electrode according to the invention is over 100,000 kilometers. Through education an alloy between the precious metal and the material of the central electrode jacket are hot gas corrosion attacks, Spark erosion and chemical attacks on the Welding point of the precious metal reinforcement and the central electrode prevented. By tapering the center electrode good mixture accessibility is also achieved.
  • the spark formation at the center electrode according to the invention by the tapered Ignition tip and through the formation of a platinum / nickel alloy in the resistance welding zone the effect is that the spark in the smallest ignition gap during the breakdown phase forms between the center electrode and the ground electrode.
  • the spark changes from Precious metal on the "base” metal, i.e. the spark changes from platinum to the nickel alloy of the central electrode, see above that the actual spark erosion burn in one place the center electrode takes place, which does not meet the voltage requirement the spark gap affected.
  • the ignition gap between Center electrode (which is the spark outlet surface on the ignition side completely made of precious metal) and possibly also Precious metal armored electrode remains relative constant, so that long lifetimes are realized.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Spark Plugs (AREA)
  • Electrodes For Compound Or Non-Metal Manufacture (AREA)
  • Electrolytic Production Of Metals (AREA)

Claims (11)

  1. Procédé de fabrication d'une électrode centrale comportant une armature en métal noble, caractérisé en ce que l'on utilise une électrode centrale dont la pointe d'allumage (2a) est effilée par rapport au corps de l'électrode centrale (1/2), que l'on soude, de manière plane, un fil (3) en métal noble, sur la pointe d'allumage effilée (2a), fil métallique dont la section correspond à la section de la pointe d'allumage effilée, et en ce que l'on coupe à arêtes vives ce fil en métal noble (3), à la hauteur souhaitée (H).
  2. Procédé selon la revendication 1, caractérisé en ce que l'on soude la zone de contact de la partie résiduelle (3a) du fil en métal noble (3) et la pointe d'allumage effilée (2a), de l'extérieur, par soudage par rayonnement, de préférence par soudage au laser, en formant un alliage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on utilise une électrode centrale dont la pointe d'allumage est effilée, passant à un diamètre de 2 mm, de préférence de 1 mm ou moins.
  4. Procédé selon les revendications 1 à 3, caractérisé en ce que l'on utilise un fil sans fin (3) en métal noble dont le diamètre est de 2 mm, de préférence de 1 mm ou moins.
  5. Procédé selon les revendications 1 à 4, caractérisé en ce que l'on coupe à arêtes vives le fil (3) en métal noble, au niveau d'une partie résiduelle (3a) ayant une hauteur (H) comprise entre 0,3 mm et 1,0 mm.
  6. Procédé selon au moins l'une des revendications précédentes, caractérisé en ce que l'on réalise la jonction de la pointe d'allumage effilée (2a) de l'électrode centrale, avec le fil (3) en métal noble, par soudage par résistance.
  7. Electrode centrale comportant une armature en métal noble, caractérisée en ce que l'électrode centrale présente une pointe d'allumage effilée (2a) sur laquelle est soudée, de façon plane, sur la face frontale, une partie (3a) d'un fil (3) en métal noble qui est limité frontalement par des arêtes vives (5) et où, autour de la zone de l'appui de la partie (3a) du fil en métal noble sur la pointe d'allumage effilée (2a), s'étend une zone d'alliage (6) de forme annulaire comprise entre le métal noble et le matériau de la pointe d'allumage de l'électrode centrale.
  8. Electrode centrale selon la revendication 7, caractérisée en ce que le diamètre de la pointe d'allumage effilée de l'électrode centrale est de 2 mm, de préférence de 1 mm ou moins.
  9. Electrode centrale selon la revendication 7 ou 8, caractérisée en ce que le diamètre de la partie résiduelle (3a) du fil en métal noble est de 2 mm, de préférence de 1 mm, en particulier inférieur à 1 mm.
  10. Electrode centrale selon l'une des revendications 7 à 9, caractérisée en ce que la hauteur (H) de la partie résiduelle (3a) du fil en métal noble est comprise entre 0,3 mm et 1,0 mm.
  11. Electrode centrale selon l'une des revendications 6 à 10, caractérisée en ce que la zone d'alliage (6) est formée par soudage au laser.
EP01102256A 2000-05-23 2001-01-31 Electrode centrale munie d'un armement en métal noble Expired - Lifetime EP1158632B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10025048A DE10025048A1 (de) 2000-05-23 2000-05-23 Mittelelektrode mit Edelmetallarmierung
DE10025048 2000-05-23

Publications (2)

Publication Number Publication Date
EP1158632A1 EP1158632A1 (fr) 2001-11-28
EP1158632B1 true EP1158632B1 (fr) 2004-04-14

Family

ID=7642952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01102256A Expired - Lifetime EP1158632B1 (fr) 2000-05-23 2001-01-31 Electrode centrale munie d'un armement en métal noble

Country Status (6)

Country Link
US (2) US6705009B2 (fr)
EP (1) EP1158632B1 (fr)
JP (1) JP4748493B2 (fr)
AT (1) ATE264556T1 (fr)
DE (2) DE10025048A1 (fr)
ES (1) ES2214353T3 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7521849B2 (en) * 2005-09-29 2009-04-21 Federal-Mogul World Wide, Inc. Spark plug with welded sleeve on electrode
US7557495B2 (en) * 2005-11-08 2009-07-07 Paul Tinwell Spark plug having precious metal pad attached to ground electrode and method of making same
DE102006009790A1 (de) * 2006-03-01 2007-09-06 Beru Ag Verfahren zum Armieren eines Endes einer Mittelelektrode einer Zündkerze
US7851984B2 (en) * 2006-08-08 2010-12-14 Federal-Mogul World Wide, Inc. Ignition device having a reflowed firing tip and method of construction
US7923909B2 (en) * 2007-01-18 2011-04-12 Federal-Mogul World Wide, Inc. Ignition device having an electrode with a platinum firing tip and method of construction
US8026654B2 (en) * 2007-01-18 2011-09-27 Federal-Mogul World Wide, Inc. Ignition device having an induction welded and laser weld reinforced firing tip and method of construction
GB0717959D0 (en) * 2007-09-14 2007-10-31 Spelectrode Ltd Ignition device electrodes, and manufacture thereof
JP5942473B2 (ja) * 2012-02-28 2016-06-29 株式会社デンソー 内燃機関用のスパークプラグ及びその製造方法
US10184387B2 (en) * 2017-01-27 2019-01-22 Caterpillar Inc. Remanufactured prechamber device and method
GB201712503D0 (en) 2017-08-03 2017-09-20 Johnson Matthey Plc Component proceduced for cold metal transfer process
DE102018105928B4 (de) 2018-03-14 2020-06-18 Federal-Mogul Ignition Gmbh Verfahren zum Herstellen einer Elektrodenanordnung für eine Zündkerze
CA3086430C (fr) * 2018-12-21 2023-08-22 Innio Jenbacher Gmbh & Co Og Bougie d'allumage et procede de fabrication d'une bougie d'allumage

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5825210B2 (ja) 1977-11-14 1983-05-26 横河電機株式会社 指示記録計
JPS6363303B2 (fr) * 1979-02-28 1988-12-07
DE2948511A1 (de) * 1979-12-01 1981-06-04 G. Rau GmbH & Co, 7530 Pforzheim Zuendkerzenmittelelektrode
JPS5947436B2 (ja) * 1982-01-14 1984-11-19 株式会社デンソー 内燃機関用スパ−クプラグ
GB2234920A (en) * 1989-08-11 1991-02-20 Ford Motor Co Forming an erosion resistant tip on an electrode
JPH04329286A (ja) * 1991-04-30 1992-11-18 Nippondenso Co Ltd スパークプラグの製造方法
JP2853108B2 (ja) * 1992-06-17 1999-02-03 日本特殊陶業 株式会社 スパークプラグ
DE69400173T2 (de) * 1993-07-06 1996-09-19 Ngk Spark Plug Co Zündkerze für Verbrennungsmotor und ihr Herstellungsverfahren
JP3265067B2 (ja) * 1993-07-23 2002-03-11 日本特殊陶業株式会社 スパークプラグ
EP0701311A1 (fr) * 1994-09-06 1996-03-13 General Motors Corporation Bougie d'allumage à interval d'éclatement radial
JP3426051B2 (ja) * 1995-04-27 2003-07-14 日本特殊陶業株式会社 スパークプラグの製造方法
US5558575A (en) * 1995-05-15 1996-09-24 General Motors Corporation Spark plug with platinum tip partially embedded in an electrode
JP3000955B2 (ja) * 1996-05-13 2000-01-17 株式会社デンソー スパークプラグ
JPH1022052A (ja) * 1996-06-28 1998-01-23 Ngk Spark Plug Co Ltd スパークプラグ
US6132277A (en) * 1998-10-20 2000-10-17 Federal-Mogul World Wide, Inc. Application of precious metal to spark plug electrode

Also Published As

Publication number Publication date
JP4748493B2 (ja) 2011-08-17
US20030205957A1 (en) 2003-11-06
EP1158632A1 (fr) 2001-11-28
US6833658B2 (en) 2004-12-21
DE50101953D1 (de) 2004-05-19
DE10025048A1 (de) 2001-12-06
JP2002008820A (ja) 2002-01-11
ES2214353T3 (es) 2004-09-16
US6705009B2 (en) 2004-03-16
ATE264556T1 (de) 2004-04-15
US20020014005A1 (en) 2002-02-07

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