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    SPARK PLUG
    1.
    发明申请
    SPARK PLUG 有权
    SPARK插头

    公开(公告)号：US20160105000A1

    公开(公告)日：2016-04-14

    申请号：US14779752

    申请日：2014-04-01

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Yoshikazu KATAOKA

    IPC: H01T13/39

    CPC classification number: H01T13/39 ,  H01T13/20 ,  H01T21/02

    Abstract: A spark plug with a center electrode, the center electrode having a small-diameter portion with a noble metal tip joined by laser welding to a front end of the small-diameter portion, a large-diameter portion made larger in diameter than the small-diameter portion and a connection portion connecting the small-diameter portion and the large-diameter portion to each other. In this spark plug, the following conditions (1), (2) and (3) are satisfied: Dg≦2.6  (1) 1.15≦Lc+Ls≦3.0  (2) 0.48≦Ls/(Lc+Ls)≦0.75  (3) where Dg (mm) is a diameter of the large-diameter portion; Lc (mm) is a length of the noble metal tip in an axis direction of the spark plug; and Ls (mm) is a length of the small-diameter portion in the axis direction of the spark plug.

    Abstract translation: 一种具有中心电极的火花塞，所述中心电极具有通过激光焊接连接到所述小直径部分的前端的具有贵金属电极头的小直径部分，其直径大于所述小直径部分的直径， 以及将小径部和大直径部彼此连接的连接部。 在该火花塞中，满足以下条件（1），（2）和（3）：Dg＆nlE; 2.6（1）1.15＆nlE; Lc + Ls＆nlE; 3.0（2）0.48和nlE; Ls /（Lc + Ls） ; 0.75（3）其中Dg（mm）是大直径部分的直径; Lc（mm）是贵金属端头在火花塞的轴向上的长度; Ls（mm）是火花塞的轴向的小径部的长度。

    SPARK PLUG
    2.
    发明申请
    SPARK PLUG 有权
    SPARK插头

    公开(公告)号：US20150207299A1

    公开(公告)日：2015-07-23

    申请号：US14590075

    申请日：2015-01-06

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Kenji BAN ,  Yoshikazu KATAOKA ,  Magoki SHIMADATE ,  Tomoaki KATO

    IPC: H01T13/32

    CPC classification number: H01T13/32 ,  H01T13/16 ,  H01T13/20

    Abstract: A spark plug wherein an outer diameter of a first face that is a gap foliating face of the center electrode tip is denoted as R1, an outer diameter of a second face that is a gap forming face of the ground electrode tip is denoted as R2, a length of the gap is denoted as G1, and an average distance of a distance between an end in the first direction of the first face and an end in the first direction of the second face and a distance between an end in the second direction of the first face and an end in the second direction of the second face is denoted as G2, R1

    Abstract translation: 将作为中心电极头的间隙面的第一面的外径表示为R1的火花塞，作为接地电极头的间隙形成面的第二面的外径表示为R2， 间隔的长度表示为G1，第一面的第一方向的端部与第二面的第一方向的端部之间的距离与第二面的端部的距离之间的距离的平均距离 第二面的第一面和第二方向的端部表示为G2，R1

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