IGNITION DEVICE HAVING AN INDUCTION WELDED AND LASER WELD REINFORCED FIRING TIP AND METHOD OF CONSTRUCTION

An ignition device for an internal combustion engine and method of construction therefore includes a housing with an insulator secured therein. A center electrode is mounted within the insulator. A ground electrode extends from the housing with a portion of the ground electrode defining a spark gap...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOWALSKI, Kevin Jay, TINWELL, Paul
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS CLADDING OR PLATING BY SOLDERING OR WELDING CORONA DEVICES CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRICITY GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR OVERVOLTAGE ARRESTERS USING SPARK GAPS PERFORMING OPERATIONS SOLDERING OR UNSOLDERING SPARK GAPS SPARKING PLUGS TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	An ignition device for an internal combustion engine and method of construction therefore includes a housing with an insulator secured therein. A center electrode is mounted within the insulator. A ground electrode extends from the housing with a portion of the ground electrode defining a spark gap across from the center electrode. The center electrode has a firing tip, wherein a resistance weld joint initially bonds the firing tip to the center electrode and a continuous bead of overlapping first weld pools formed substantially from the material of the firing tip further bonds the firing tip to the electrode. A continuous bead of overlapping second weld pools formed radially outwardly from the first weld pools forms a rounded shoulder surface extending from the first weld pools to an outer surface of the center electrode.