EP1303014A1 - Spark plug and manufacturing method - Google Patents

Spark plug and manufacturing method Download PDF

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Publication number
EP1303014A1
EP1303014A1 EP02019198A EP02019198A EP1303014A1 EP 1303014 A1 EP1303014 A1 EP 1303014A1 EP 02019198 A EP02019198 A EP 02019198A EP 02019198 A EP02019198 A EP 02019198A EP 1303014 A1 EP1303014 A1 EP 1303014A1
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EP
European Patent Office
Prior art keywords
noble metal
electrode
metal ball
tip
welding
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.)
Granted
Application number
EP02019198A
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German (de)
French (fr)
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EP1303014B1 (en
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
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Publication date
Application filed by Beru AG filed Critical Beru AG
Publication of EP1303014A1 publication Critical patent/EP1303014A1/en
Application granted granted Critical
Publication of EP1303014B1 publication Critical patent/EP1303014B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 manufacturing spark plugs according to the preamble of claim 1 and spark plugs, which are produced by the method according to Claims 1 to 6 are marked.
  • the object of the invention is a method for the production of spark plugs with central and body electrode (s), armored with precious metal inserts make that fast and with high manufacturing reliability can be carried out economically; Object of the invention it is also, spark plugs with central and body electrode (s), which are armored with precious metal inserts for To provide those with high manufacturing reliability, are time-saving and economical to manufacture.
  • Figure 1 is a schematic longitudinal section through the tip area a center electrode of an inventive Spark plug with opposite welding electrode;
  • Figure 2a and 2b schematic longitudinal sections through the Tip area of the center electrode 1 with an integrated precious metal ball 2 (Figure 2a), and with additional fixation of the Precious metal ball 2 through laser melting points 5 ( Figure 2b);
  • Figure 3 is a schematic longitudinal section through the tip area a spark plug according to the invention, including Body electrode.
  • the center electrode has a preferred one Embodiment of the invention a pyramid-shaped Tip (round pyramid) 9, with the base diameter of the Tip 9 has the diameter d.
  • a welding electrode 3 is arranged in the end face a precious metal ball 2, in its most preferred embodiment consists of iridium / iridium alloy, stored is; it also has a diameter of d.
  • the usual spark plugs have a diameter d in the range of 0.4 to 1.0 mm, in particular from 0.6 to 0.8 mm.
  • the Material of the tip 9 flows around the precious metal ball 2 to the extent in which they are not in the end face of the welding electrode 3 is embedded; Precious metal ball 2 is preferred about half sunk in the end face of the welding electrode 3 stored.
  • the Body electrode (s) 8 the spherical precious metal reinforcement 2 be introduced.

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

Abstract

The tip (9) of a center electrode (1) is formed like a pyramid with a base diameter (d1). A ball (2) of noble metal with a specific diameter (d) is lodged on its face in a welding electrode (3), which is pressed onto the ball by liquefying the tip of the center electrode and by applying a defined welding force acting against it and defined welding parameters for liquefying the tip of the center electrode, the liquefied material of which flows partly round the ball. <??>After the liquefied material of the tip of the center electrode has solidified, the welding electrode is separated from the center electrode with the ball of noble metal that has been embedded. An Independent claim is also included for a spark plug produced by the method of the present invention.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung von Zündkerzen gemäß Oberbegriff des Anspruchs 1 sowie Zündkerzen, die durch die Herstellung nach den Verfahren gemäß Ansprüchen 1 bis 6 gekennzeichnet sind.The invention relates to a method for manufacturing spark plugs according to the preamble of claim 1 and spark plugs, which are produced by the method according to Claims 1 to 6 are marked.

Aufgabe der Erfindung ist es, ein Verfahren zur Herstellung von Zündkerzen mit Mittel- und Körperelektrode(n), die mit Edelmetalleinsätzen armiert sind, zur Verfügung zu stellen, das mit hoher Fertigungssicherheit schnell und wirtschaftlich durchgeführt werden kann; Aufgabe der Erfindung ist es ebenfalls, Zündkerzen mit Mittel- und Körperelektrode(n), die mit Edelmetalleinsätzen armiert sind, zur Verfügung zu stellen, die mit hoher Fertigungssicherheit, zeitsparend und wirtschaftlich herstellbar sind.The object of the invention is a method for the production of spark plugs with central and body electrode (s), armored with precious metal inserts make that fast and with high manufacturing reliability can be carried out economically; Object of the invention it is also, spark plugs with central and body electrode (s), which are armored with precious metal inserts for To provide those with high manufacturing reliability, are time-saving and economical to manufacture.

Die erfindungsgemäße Aufgabe wird durch das Verfahren gemäß Anspruch 1 und die Zündkerzen gemäß Anspruch 7 gelöst. Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Ansprüchen 2 bis 6.The object of the invention is achieved by the method solved according to claim 1 and the spark plugs according to claim 7. Further advantageous embodiments of the invention result themselves from claims 2 to 6.

Die Erfindung wird anhand der beiliegenden Figuren 1 bis 3 näher erläutert.The invention is illustrated by the attached figures 1 to 3 explained in more detail.

Hierbei sindHere are

Figur 1 ein schematischer Längsschnitt durch den Spitzenbereich einer Mittelelektrode einer erfindungsgemäßen Zündkerze mit gegenüberliegender Schweißelektrode;Figure 1 is a schematic longitudinal section through the tip area a center electrode of an inventive Spark plug with opposite welding electrode;

Figur 2a und 2b schematische Längsschnitte durch den Spitzenbereich der Mittelelektrode 1 mit integrierter Edelmetallkugel 2 (Figur 2a), und mit zusätzlicher Fixierung der Edelmetallkugel 2 durch Laserschmelzpunkte 5 (Figur 2b);Figure 2a and 2b schematic longitudinal sections through the Tip area of the center electrode 1 with an integrated precious metal ball 2 (Figure 2a), and with additional fixation of the Precious metal ball 2 through laser melting points 5 (Figure 2b);

Figur 3 ein schematischer Längsschnitt durch den Spitzenbereich einer erfindungsgemäßen Zündkerze, einschließlich Körperelektrode.Figure 3 is a schematic longitudinal section through the tip area a spark plug according to the invention, including Body electrode.

Gemäß Figur 1 weist die Mittelelektrode einer bevorzugten Ausführungsform der Erfindung eine pyramidenförmige Spitze (Rundpyramide) 9 auf, wobei der Basisdurchmesser der Spitze 9 den Durchmesser d besitzt. Gegenüberliegend ist eine Schweißelektrode 3 angeordnet, in deren Stirnfläche eine Edelmetallkugel 2, die in ihrer bevorzugtesten Ausführungsform aus Iridium/Iridiumlegierung besteht, gelagert ist; sie weist ebenfalls einen Durchmesser von d auf. Für übliche Zündkerzen liegt der Durchmesser d im Bereich von 0,4 bis 1,0 mm, insbesondere von 0,6 bis 0,8 mm.According to FIG. 1, the center electrode has a preferred one Embodiment of the invention a pyramid-shaped Tip (round pyramid) 9, with the base diameter of the Tip 9 has the diameter d. Is opposite a welding electrode 3 is arranged in the end face a precious metal ball 2, in its most preferred embodiment consists of iridium / iridium alloy, stored is; it also has a diameter of d. For The usual spark plugs have a diameter d in the range of 0.4 to 1.0 mm, in particular from 0.6 to 0.8 mm.

Erfindungsgemäß wird die Edelmetallkugel 2 in der Stirnfläche der Mittelelektrode dadurch eingebettet, dass die pyramidenförmigen Mittelelektrodenspitze 9 auf die Edelmetallkugel 2 aufgedrückt und verflüssigt wird, wobei das Material der Spitze 9 die Edelmetallkugel 2 in dem Maße umfließt, in dem sie nicht in der Stirnfläche der Schweißelektrode 3 eingebettet ist; bevorzugt ist die Edelmetallkugel 2 etwa hälftig in der Stirnfläche der Schweißelektrode 3 versenkt gelagert.According to the noble metal ball 2 in the End face of the center electrode embedded in that the pyramid-shaped center electrode tip 9 on the precious metal ball 2 is pressed and liquefied, the Material of the tip 9 flows around the precious metal ball 2 to the extent in which they are not in the end face of the welding electrode 3 is embedded; Precious metal ball 2 is preferred about half sunk in the end face of the welding electrode 3 stored.

Nach Erkalten des Materials der Mittelelektrodenspitze 9 werden Schweißelektrode 3 und Mittelektrode 1, in der nunmehr die Edelmetallkugel 2 etwa hälftig eingebettet ist, getrennt. Dieser Zustand wird in Figur 2a wiedergegeben, während in Figur 2b dargestellt wird, dass die Edelmetallkugel 2 zusätzlich durch Laserschmelzpunkte in der Stirnfläche der Mittelelektrode 1 fixiert ist.After the material of the center electrode tip has cooled 9 are welding electrode 3 and center electrode 1, in the now the precious metal ball 2 is approximately half embedded, Cut. This state is shown in Figure 2a, while it is shown in Figure 2b that the precious metal ball 2 additionally by laser melting points in the end face the center electrode 1 is fixed.

In entsprechender Weise kann in die Stirnfläche(n) der Körperelektrode(n) 8 die kugelförmige Edelmetallarmierung 2 eingebracht werden.In a corresponding manner, the Body electrode (s) 8 the spherical precious metal reinforcement 2 be introduced.

Claims (7)

Verfahren zur Herstellung von Zündkerzen mit Mittel- und Körperelektrode(n), die mit Edelmetalleinsätzen armiert sind, dadurch gekennzeichnet, dass man die Spitze (9) der Mittelelektrode (1) pyramidenförmig mit einem Basisdurchmesser (d) ausbildet; dass man eine Edelmetallkugel (2) mit einem Durchmesser (d) stirnseitig in einer Schweißelektrode (3) lagert; dass man unter Verflüssigung der Mittelelektrodenspitze (9) diese auf die Edelmetallkugel (2) unter definierter Schweißanpreßkraft und definierten Schweißparametern zum Verflüssigen der Mittelelektrodenspitze (9) drückt, wobei das verflüssigte Material der Mittelelektrodenspitze (9) die Edelmetallkugel (2) teilweise umfließt; und dass man nach dem Erstarren des verflüssigten Materials der Mittelelektrodenspitze (9) die Schweißelektrode (3) von der Mittelelektrode (1) mit eingebetteter Edelmetallkugel (2) trennt.Process for the production of spark plugs with central and body electrodes (n), which are reinforced with precious metal inserts, characterized in that the tip (9) of the central electrode (1) is formed pyramid-shaped with a base diameter (d); that a noble metal ball (2) with a diameter (d) is mounted on the end face in a welding electrode (3); that one liquefies the central electrode tip (9) onto the noble metal ball (2) under defined welding pressure and defined welding parameters to liquefy the central electrode tip (9), the liquefied material of the central electrode tip (9) partially flowing around the noble metal ball (2); and that after the liquefied material of the center electrode tip (9) has solidified, the welding electrode (3) is separated from the center electrode (1) with an embedded noble metal ball (2). Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass man in gleicher Weise die Körperelektrode(n) (8) mit einer Edelmetallkugel (2) armiert.Method according to claim 1, characterized in that the body electrode (s) (8) is reinforced in the same way with a noble metal ball (2). Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Schweißen als Widerstandsschweißen durchgeführt wird.A method according to claim 1 or 2, characterized in that the welding is carried out as resistance welding. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Edelmetallkugel (2) aus Iridium oder Iridiumlegierung besteht.Method according to one of the preceding claims, characterized in that the noble metal ball (2) consists of iridium or iridium alloy. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass man durch Laserschmelzpunkte (5) eine weitere Fixierung der Edelmetallkugel (2) in der Stirnfläche der Mittelelektrode (1) bzw. der Körperelektrode(n) (8) bewirkt.Method according to one of the preceding claims, characterized in that a further fixation of the noble metal ball (2) in the end face of the central electrode (1) or the body electrode (s) (8) is effected by laser melting points (5). Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Durchmesser (d) der Edelmetallkugel (2) 0,4 bis 1,0 mm, vorzugsweise 0,6 bis 0,8 mm beträgt.Method according to one of the preceding claims, characterized in that the diameter (d) of the noble metal ball (2) is 0.4 to 1.0 mm, preferably 0.6 to 0.8 mm. Zündkerze, gekennzeichnet durch Herstellung nach mindestens einem der Verfahren gemäß Ansprüchen 1 bis 6.Spark plug, characterized by production according to at least one of the methods according to claims 1 to 6.
EP02019198A 2001-10-09 2002-09-02 Method of manufacturing of spark plugs Expired - Lifetime EP1303014B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10149630A DE10149630C1 (en) 2001-10-09 2001-10-09 Spark plug and process for its manufacture
DE10149630 2001-10-09

Publications (2)

Publication Number Publication Date
EP1303014A1 true EP1303014A1 (en) 2003-04-16
EP1303014B1 EP1303014B1 (en) 2004-12-01

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EP02019198A Expired - Lifetime EP1303014B1 (en) 2001-10-09 2002-09-02 Method of manufacturing of spark plugs

Country Status (6)

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US (1) US6791246B2 (en)
EP (1) EP1303014B1 (en)
JP (1) JP2003120931A (en)
AT (1) ATE284085T1 (en)
DE (2) DE10149630C1 (en)
ES (1) ES2229037T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113063162A (en) * 2021-04-08 2021-07-02 安徽汉先智能科技有限公司 Electronic ignition control system for ball welding type bonding machine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149630C1 (en) 2001-10-09 2003-10-09 Beru Ag Spark plug and process for its manufacture
JP4220308B2 (en) * 2003-05-29 2009-02-04 株式会社デンソー Spark plug
CN1864307A (en) * 2003-08-03 2006-11-15 霍斯尼·埃伯黑·萨伯利 Spark plug
EP2002520A2 (en) * 2006-03-24 2008-12-17 Federal-Mogul Corporation Spark plug
WO2007149862A2 (en) 2006-06-19 2007-12-27 Federal-Mogul Corporation Spark plug with fine wire ground electrode
US7573185B2 (en) 2006-06-19 2009-08-11 Federal-Mogul World Wide, Inc. Small diameter/long reach spark plug with improved insulator design
US8460044B2 (en) * 2009-01-23 2013-06-11 Fram Group Ip Llc Spark plug electrode and method of making
JP2010253500A (en) * 2009-04-23 2010-11-11 Sumitomo Electric Ind Ltd Laser welding method
DE102010014325B4 (en) * 2010-04-09 2018-07-05 Federal-Mogul Ignition Gmbh Method of manufacturing a spark plug and spark plug made thereby

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JPH0536462A (en) * 1991-07-26 1993-02-12 Ngk Spark Plug Co Ltd Spark plug
JP2000306654A (en) * 1999-04-16 2000-11-02 Ngk Spark Plug Co Ltd Manufacture for spark plug, and spark plug
JPH11329667A (en) * 1999-04-26 1999-11-30 Ngk Spark Plug Co Ltd Manufacture of spark plug, and spark plug
DE10149630C1 (en) 2001-10-09 2003-10-09 Beru Ag Spark plug and process for its manufacture

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Publication number Priority date Publication date Assignee Title
CN113063162A (en) * 2021-04-08 2021-07-02 安徽汉先智能科技有限公司 Electronic ignition control system for ball welding type bonding machine

Also Published As

Publication number Publication date
ATE284085T1 (en) 2004-12-15
JP2003120931A (en) 2003-04-23
DE10149630C1 (en) 2003-10-09
US20030085202A1 (en) 2003-05-08
EP1303014B1 (en) 2004-12-01
DE50201666D1 (en) 2005-01-05
US6791246B2 (en) 2004-09-14
ES2229037T3 (en) 2005-04-16

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