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

    公开(公告)号：US20150340845A1

    公开(公告)日：2015-11-26

    申请号：US14719828

    申请日：2015-05-22

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Hiroyuki KAMEDA

    IPC: H01T13/46

    CPC classification number: H01T13/462 ,  H01T13/32 ,  H01T13/467

    Abstract: A spark plug having an insulator, a metallic shell disposed around the insulator, a first ground electrode having a first surface facing a side surface of a center electrode in a radial direction so as to form a first gap, and a second ground electrode having a second surface facing the side surface of the center electrode in the radial direction so as to form a second gap. A relation 60°≦θ≦150° is satisfied, where θ is a smaller one of angles formed between a first line connecting an axial line of the center electrode and the center of the first surface and a second line connecting the axis and a center of the second surface when viewed from a forward end side toward a rear end side in the direction of the axis.

    Abstract translation: 一种具有绝缘体的火花塞，设置在所述绝缘体周围的金属壳，具有在半径方向上与中心电极的侧面对置的第一面的第一接地电极，以形成第一间隙，以及第二接地电极， 第二表面在径向方向上面对中心电极的侧表面，以形成第二间隙。 关系60°＆nlE;＆thetas;＆nlE; 150°满足，其中＆thetas; 是从连接中心电极的轴线和第一表面的中心的第一线和从前端朝向后方观察连接轴线和第二表面的中心的第二线之间形成的较小角度 在轴的方向的端侧。

    PLASMA JET SPARK PLUG
    2.
    发明申请
    PLASMA JET SPARK PLUG 有权
    等离子喷射火花塞

    公开(公告)号：US20160028214A1

    公开(公告)日：2016-01-28

    申请号：US14811160

    申请日：2015-07-28

    Applicant: NGK Spark Plug Co., LTD.

    Inventor： Naoyuki MUKOYAMA ,  Hiroyuki KAMEDA ,  Daisuke KASAHARA

    IPC: H01T13/32

    CPC classification number: H01T13/32 ,  H01T13/52 ,  H01T13/54

    Abstract: A plasma jet plug has a cavity defined by a surface of a center electrode, an inner surface of an insulator, and a surface of a ground electrode. When a volume of a portion of the cavity on a front side of a front portion of the center electrode is a first volume V1 and a volume of a portion of the cavity on a rear side of the front end of the center electrode is a second volume V2, the following expression is satisfied: V1/V2≧0.20.

    Abstract translation: 等离子体喷射塞具有由中心电极的表面，绝缘体的内表面和接地电极的表面限定的空腔。 当中心电极的前部前侧的空腔的一部分的体积是第一容积V1，并且中心电极的前端的后侧的空腔的一部分的体积是第二容积 体积V2，满足以下表达式：V1 /V2≥0.20。

    SPARK PLUG
    3.
    发明申请
    SPARK PLUG 审中-公开

    公开(公告)号：US20180019578A1

    公开(公告)日：2018-01-18

    申请号：US15630224

    申请日：2017-06-22

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Naoyuki MUKOYAMA ,  Hiroyuki KAMEDA

    IPC: H01T13/32 ,  H01T13/08 ,  H01T13/38 ,  H01T13/39

    CPC classification number: H01T13/32 ,  H01T13/08 ,  H01T13/16 ,  H01T13/20 ,  H01T13/34 ,  H01T13/36 ,  H01T13/38 ,  H01T13/39 ,  H01T13/41

    Abstract: A spark plug having an insulator with a front end portion having an annular groove opened to a front side around an axial line. The groove has a width of greater than or equal to 0.2 mm in a radial direction. In a cross section including the axial line, a value D/L obtained by dividing, by a length L, a creepage distance D, from a position P on the frontmost side of a region in which a clearance distance between an outer surface of a front end portion and an inner circumferential surface of a metal shell is less than or equal to 0.1 mm to a connection position between an outer surface of the front end portion and the axial hole, is greater than or equal to 1.1.

    NON-THERMAL EQUILIBRIUM PLASMA IGNITION PLUG AND NON-THERMAL EQUILIBRIUM PLASMA IGNITION DEVICE
    4.
    发明申请
    NON-THERMAL EQUILIBRIUM PLASMA IGNITION PLUG AND NON-THERMAL EQUILIBRIUM PLASMA IGNITION DEVICE 有权
    非热平衡等离子体点火插头和非热平衡等离子体点火装置

    公开(公告)号：US20160157332A1

    公开(公告)日：2016-06-02

    申请号：US14948910

    申请日：2015-11-23

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Kenji BAN ,  Hiroyuki KAMEDA ,  Kohei USAMI

    IPC: H05H1/52 ,  H01T15/00 ,  H01T13/20

    CPC classification number: H05H1/52 ,  H01T13/20 ,  H01T13/50 ,  H01T13/52 ,  H01T15/00

    Abstract: A non-thermal equilibrium plasma ignition plug including a tubular metallic shell having an axial hole extending along an axial line, an insulator disposed in such a manner as to form a gap in cooperation with a wall surface of the axial hole at a forward end portion of the metallic shell, and a center electrode held at the center of the insulator, and generates nonequilibrium plasma in response to voltage applied thereto from a power supply. The insulator has a plurality of depressions or protrusions formed on a surface thereof which faces a discharge space therearound.

    Abstract translation: 一种非热平衡等离子火花塞，其包括具有沿轴线延伸的轴向孔的管状金属壳，绝缘体，其设置成与前端部的轴孔的壁面形成间隙 的金属外壳和保持在绝缘体中心的中心电极，并且响应于从电源施加到其上的电压而产生非平衡等离子体。 绝缘体在其表面上形成有多个凹陷或突起，其面向其周围的放电空间。

    PLASMA JET PLUG
    6.
    发明申请
    PLASMA JET PLUG 审中-公开

    公开(公告)号：US20180038337A1

    公开(公告)日：2018-02-08

    申请号：US15552205

    申请日：2016-02-03

    Applicant: NGK Spark Plug Co., LTD.

    Inventor： Naoyuki MUKOYAMA ,  Hiroyuki KAMEDA ,  Daisuke KASAHARA

    IPC: F02P13/00 ,  H01T13/54 ,  H01T13/32

    CPC classification number: F02P13/00 ,  H01T13/20 ,  H01T13/32 ,  H01T13/52 ,  H01T13/54

    Abstract: A plasma jet plug includes: a tubular insulator having an axial hole; a center electrode disposed inside the axial hole; metal shell disposed on an outer circumference of the insulator; and an orifice electrode electrically connected to the metal shell and disposed on a front side of the insulator. A plasma generating cavity is formed by a surface of the center electrode, an inner surface of the insulator, and an inner surface of the orifice electrode. In the plasma jet plug, a shortest path length D1 of a surface path is greater than or equal to 5 times an aerial gap G, where the surface path extends, inside the cavity, from a surface of the center electrode via an inner surface of the insulator to an inner surface of the orifice electrode, and the aerial gap G is a shortest distance between the center electrode and the orifice electrode.

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