发明名称 |
Spark plug and method of producing same |
摘要 |
<p>A spark plug used in an automotive internal combustion engine. The spark plug comprises a center electrode. An insulator is disposed around the center electrode. A metal main body is disposed around the insulator. A ground electrode has a first end section connected to the metal main body, and a second end section located opposite to the center electrode. Additionally, a tip is formed of an alloy whose main component is Ir. The tip is secured to the ground electrode and serving as a spark consumption-resistant electrode material. The tip has an axis directed to the center electrode. In the spark plug, a molten and solidified section formed of alloy is disposed to fix the tip to the ground electrode. The molten and solidified section includes a surrounding molten and solidified section located surrounding a peripheral surface of a major part of the tip embedded in the ground electrode. <IMAGE></p> |
申请公布号 |
EP1244189(A2) |
申请公布日期 |
2002.09.25 |
申请号 |
EP20020006004 |
申请日期 |
2002.03.15 |
申请人 |
NGK SPARK PLUG CO., LTD. |
发明人 |
TERAMURA, HIDEKI;MUSASA, MAMORU;KONDO, KIYOHIRO |
分类号 |
H01T13/20;H01T13/32;H01T13/39;H01T21/02;(IPC1-7):H01T13/39 |
主分类号 |
H01T13/20 |
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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