发明申请
US20120274200A1 SPARK PLUG HAVING IMPROVED GROUND ELECTRODE ORIENTATION AND METHOD OF FORMING
有权
具有改进的接地电极方位的火花塞和形成方法
- 专利标题: SPARK PLUG HAVING IMPROVED GROUND ELECTRODE ORIENTATION AND METHOD OF FORMING
- 专利标题(中): 具有改进的接地电极方位的火花塞和形成方法
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申请号: US13350140申请日: 2012-01-13
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公开(公告)号: US20120274200A1公开(公告)日: 2012-11-01
- 发明人: Patrick M. Gfell , Donald R. Gregg , Kevin J. Kowalski
- 申请人: Patrick M. Gfell , Donald R. Gregg , Kevin J. Kowalski
- 主分类号: H01T13/20
- IPC分类号: H01T13/20 ; H01T13/39 ; H01T21/02
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).