发明授权
- 专利标题： Spark plug for internal combustion engine having platinum and iridium alloyed emissive tips
- 专利标题（中）： 具有铂和铱合金发射尖端的内燃机的火花塞
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申请号： US848681申请日： 1997-04-29
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公开(公告)号： US5869921A公开(公告)日： 1999-02-09
- 发明人: Wataru Matsutani , Tsutomu Okayama
- 申请人： Wataru Matsutani , Tsutomu Okayama
- 申请人地址： JPX Aichi
- 专利权人： NGK Spark Plug Co., Ltd.
- 当前专利权人： NGK Spark Plug Co., Ltd.
- 当前专利权人地址： JPX Aichi
- 优先权： JPX8-130549 19960430
- 主分类号： C22C5/04
- IPC分类号： C22C5/04 ; H01T13/39 ; H01J13/20
摘要：
In a spark plug for an internal combustion engine, a spark gap is defined between an insulated sparking portion and a grounded sparking portion. At least one of the insulated sparking portion and the grounded sparking portion is made of a molten alloy composed of (a) 99 to 80 wt. % of Ir and (b) 1 to 20 wt. % of Pt. The insulated sparking portion can be a center electrode or a discharge chip attached to a free end of the center electrode, while the grounded sparking portion can be a ground electrode or a discharge chip attached to a free end of the ground electrode.
公开/授权文献
- US5194645A Trans-Pt (IV) compounds 公开/授权日：1993-03-16
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