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    SPARK PLUG FOR AN INTERNAL COMBUSTION ENGINE
    5.
    发明公开
    SPARK PLUG FOR AN INTERNAL COMBUSTION ENGINE 审中-公开

    公开(公告)号：EP3460929A1

    公开(公告)日：2019-03-27

    申请号：EP17192672.8

    申请日：2017-09-22

    申请人： Caterpillar Energy Solutions GmbH

    发明人： Stellwagen, Karl ,  Schäfer, Friedrich

    IPC分类号： H01T13/08 ,  F02P13/00 ,  H01T13/16 ,  H01T13/54 ,  H01T13/40

    摘要： The present disclosure relates to a spark plug (30) for an internal combustion engine. The spark plug (30) is configured to be mounted in a spark plug bore (44) of the engine in such a manner that a length of a heat transfer path from a center electrode (68) and a ground electrode (94) is shortened. To this end, a sealing portion (58) through which the heat transfer is effected is provided closer to an end (51) of a housing (50) of the spark plug (30) than a mounting portion (56) for mounting the spark plug (30) in the spark plug bore (44). In this manner, the heat from the center electrode (68) and the ground electrode (94) can be transferred from the housing (50) to the inner surface of the spark plug bore (44) without having to flow through the mounting portion (56).

    SPARK PLUG
    8.
    发明公开
    SPARK PLUG 审中-公开

    公开(公告)号：EP3382829A1

    公开(公告)日：2018-10-03

    申请号：EP18163686.1

    申请日：2018-03-23

    申请人： NGK Spark Plug Co., Ltd.

    发明人： SAITO, Hirotaka ,  Mukoyama, Naoyuki

    IPC分类号： H01T13/34 ,  H01T13/16 ,  H01T13/52

    摘要： A spark plug including a bottomed tubular insulator (20), a tubular metal shell (30), a conductive layer (40), and a terminal. The insulator (20) extends along an axial line (O) from a front end side to a rear end side and is closed at a front end. The metal shell (30) has a ledge portion (37) that projects radially inward and locks the insulator (20) from the front end side. The metal shell (30) holds the insulator (20) from an outer peripheral side. The conductive layer (40) covers at least a part of an inner peripheral surface (25) of a portion of the insulator (20) which is located on the front end side with respect to a locking portion (24) locked by the ledge portion (37). The terminal is electrically connected to the conductive layer (40) and is insulated from the metal shell (30).

    SPARK PLUG
    10.
    发明公开
    SPARK PLUG 审中-公开
    火花塞

    公开(公告)号：EP3270475A1

    公开(公告)日：2018-01-17

    申请号：EP17179536.2

    申请日：2017-07-04

    申请人： NGK Spark Plug Co., Ltd.

    发明人： ITO, Kazuki ,  SUMOYAMA, Daisuke ,  SHIBATA, Tsutomu

    IPC分类号： H01T13/16 ,  H01T13/39 ,  C22C19/05

    摘要： A spark plug having a center electrode and a ground electrode that form a gap therebetween. At least one of the center electrode and the ground electrode includes a portion formed of a nickel alloy containing nickel as a major component and 20% by mass or more of chromium. In the portion, formed of the nickel alloy, of the electrode, the content of silicon is 0.1% by mass or more, the total content of one or more particular elements selected from the group consisting of rare earth elements is 0.01% by mass or more, and the area percentage of voids in the total area of a cross-section parallel to a longitudinal direction is 1% or less.

    摘要翻译： 火花塞具有在其间形成间隙的中心电极和接地电极。 中心电极和接地电极中的至少一个包括由含镍作为主要成分和20质量％以上的铬的镍合金形成的部分。 在由镍合金形成的电极部分中，硅的含量为0.1质量％以上，选自稀土元素中的一种或多种特定元素的总含量为0.01质量％或 更多，并且与长度方向平行的截面的总面积中的空隙面积率为1％以下。