发明名称 |
IGNITION DEVICE HAVING AN ELECTRODE WITH A PLATINUM FIRING TIP AND METHOD OF CONSTRUCTION |
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. At least a selected one of the center electrode or ground electrode has a platinum or platinum-based alloy firing tip. A resistance weld joint bonds the firing tip to the selected electrode and defines a lower surface of the firing tip that is embedded a first distance beneath an outer surface of the selected electrode. A continuous bead of overlapping laser weld pools is formed over an outer periphery of the firing tip. The overlapping weld pools extend a second distance beneath the outer surface of the selected electrode, with the second distance being greater than the first distance. |
申请公布号 |
EP2109923(A1) |
申请公布日期 |
2009.10.21 |
申请号 |
EP20080727575 |
申请日期 |
2008.01.11 |
申请人 |
FEDERAL-MOGUL IGNITION COMPANY |
发明人 |
TINWELL, PAUL |
分类号 |
H01T13/39;H01T13/32;H01T21/02 |
主分类号 |
H01T13/39 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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