Spark plug for internal combustion engine having platinum and iridium
alloyed emissive tips
    38.
    发明授权
    Spark plug for internal combustion engine having platinum and iridium alloyed emissive tips 失效
    具有铂和铱合金发射尖端的内燃机的火花塞

    公开(公告)号:US5869921A

    公开(公告)日:1999-02-09

    申请号:US848681

    申请日:1997-04-29

    IPC分类号: C22C5/04 H01T13/39 H01J13/20

    CPC分类号: H01T13/39

    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.

    摘要翻译: 在用于内燃机的火花塞中,在绝缘火花部分和接地的火花部分之间限定火花隙。 绝缘火花部分和接地的火花部分中的至少一个由(a)99-80重量%的熔融合金制成。 Ir的比例和(b)1〜20wt。 %的Pt。 绝缘火花部分可以是附接到中心电极的自由端的中心电极或放电芯片,而接地的火花部分可以是接地电极或附着到接地电极的自由端的放电芯片。

    Spark plug and the method of manufacturing the same
    39.
    再颁专利
    Spark plug and the method of manufacturing the same 失效
    火花塞及其制造方法

    公开(公告)号:USRE35429E

    公开(公告)日:1997-01-21

    申请号:US73706

    申请日:1993-06-09

    申请人: Ryoji Kondo

    发明人: Ryoji Kondo

    IPC分类号: H01T13/39 H01T21/02 H01J13/20

    CPC分类号: H01T13/39 H01T21/02

    摘要: A spark plug for internal combustion engines provided with a noble metal tip on the pointed top of a spark plug center electrode. The noble metal tip is welded to the center electrode top end by heating and pressing the portion to be welded. After the welding, the center electrode is shaped to provide the pointed top. The noble metal tip is a platinum alloy consisting of platinum of 85 through 70 in weight percentage and iridium of 15 through 30 in weight percentage.

    摘要翻译: 一种用于内燃机的火花塞,其在火花塞中心电极的尖顶上设置有贵金属尖端。 通过对被焊接部分进行加热和加压将贵金属焊头焊接到中心电极顶端。 焊接后,中心电极成形为提供尖顶。 贵金属尖端是由85重量%至70重量%的铂和15至30重量%的铱组成的铂合金。