发明名称 |
SPARK PLUG HAVING IMPROVED GROUND ELECTRODE ORIENTATION AND METHOD OF FORMING |
摘要 |
A spark plug (20) for being threaded into a cylinder head (28) includes a shell (24) with threads (26) disposed at a predetermined angled relative to the ground electrode (34). The position of the threads (26) relative to the ground electrode (34) places the ground electrode (34) in a predetermined position in the combustion chamber (22) and relative to components of the engine, thus allowing the ground electrode (34) to provide a robust and reliable ignition. The threads (26) are formed by a thread forming apparatus (102) that includes an orientation tool (38) to position the ground electrode (34) relative to a thread forming apparatus (102), allowing the thread forming apparatus (102) to form the threads (26) at the desired angle (α). |
申请公布号 |
EP2664038(A1) |
申请公布日期 |
2013.11.20 |
申请号 |
EP20120701597 |
申请日期 |
2012.01.13 |
申请人 |
FEDERAL-MOGUL IGNITION COMPANY |
发明人 |
GFELL, PATRICK, MICHAEL;GREGG, DON, R.;KOWALSKI, KEVIN, J. |
分类号 |
H01T13/08;H01T13/32;H01T21/02 |
主分类号 |
H01T13/08 |
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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