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Ignition device with ignition tip that is induction-welded and laser-welded reinforced, and method for manufacturing the same
Ignition device with ignition tip that is induction-welded and laser-welded reinforced, and method for manufacturing the same
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机译:具有感应焊接和激光焊接增强的点火尖端的点火装置及其制造方法
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摘要
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.
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