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    Spark plug
    22.
    发明授权
    Spark plug 有权

    公开(公告)号：US10193311B2

    公开(公告)日：2019-01-29

    申请号：US15669536

    申请日：2017-08-04

    Applicant: NGK Spark Plug Co., LTD.

    Inventor： Yutaka Yokoyama ,  Kuniharu Tanaka ,  Nobuyoshi Araki ,  Hirokazu Kurono ,  Toshimasa Saji ,  Yusuke Nomura ,  Jumpei Isasa

    IPC: C04B35/10 ,  H01T13/18 ,  H01T13/38 ,  H01B3/12 ,  C04B35/111 ,  C04B35/626 ,  C04B35/634

    Abstract: An alumina-based sintered body includes 92 mass % to 96 mass % of Al in terms of an oxide, and at least three elements selected from Group II elements, one of the at least three elements being 1.90 mass % or more of Ba in terms of an oxide. The alumina-based sintered body includes the following phases in a grain boundary phase present between alumina crystal grains: a first crystal phase containing Si and at least one of the Group II elements, and a second crystal phase containing Al and at least one of the Group II elements. In X-ray diffraction of the alumina-based sintered body, the maximum relative intensity of the first crystal phase and the maximum relative intensity of the second crystal phase are both 2 or above relative to the maximum diffraction intensity of the alumina crystal.

    Spark plug
    24.
    发明授权
    Spark plug 有权
    火花塞

    公开(公告)号：US09595814B2

    公开(公告)日：2017-03-14

    申请号：US15108115

    申请日：2014-12-25

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Takashi Kasashima ,  Katsuya Takaoka ,  Kazuhiro Kurosawa ,  Kuniharu Tanaka ,  Toshitaka Honda ,  Hirokazu Kurono ,  Haruki Yoshida ,  Hironori Uegaki

    IPC: H01T13/05 ,  H01T13/41 ,  F02P11/00

    CPC classification number: H01T13/05 ,  F02P11/00 ,  H01T13/41

    Abstract: A connection portion connecting a center electrode and a terminal metal fixture together in a through hole of the insulator includes a resistor and a magnetic substance structure including a magnetic substance and a conductor and being disposed on a leading end side or a rear end side of the resistor while being positioned away from the resistor. The connection portion further includes a first conductive sealing portion, a second conductive sealing portion and a third conductive sealing portion. The first conductive sealing portion is disposed on a leading end side of a first member and is in contact therewith. The second conductive sealing portion is disposed between the first member and a second member and is in contact with the first and second members. The third conductive sealing portion is disposed on a rear end side of the second member and is in contact therewith.

    Abstract translation: 在绝缘体的通孔中连接中心电极和端子金属固定器的连接部分包括电阻器和包括磁性物质和导体的磁性物质结构，并且设置在所述绝缘体的前端侧或后端侧 电阻器，同时远离电阻器定位。 连接部分还包括第一导电密封部分，第二导电密封部分和第三导电密封部分。 第一导电密封部分设置在第一构件的前端侧并与其接触。 第二导电密封部分设置在第一构件和第二构件之间并且与第一构件和第二构件接触。 第三导电密封部分设置在第二构件的后端侧并与其接触。

    Spark plug
    25.
    发明授权
    Spark plug 有权
    火花塞

    公开(公告)号：US09466951B2

    公开(公告)日：2016-10-11

    申请号：US14441315

    申请日：2013-06-13

    Applicant: NGK SPARK PLUG CO., LTD.

    Inventor： Katsuya Takaoka ,  Hironori Uegaki ,  Hirokazu Kurono ,  Toshitaka Honda

    IPC: H01T13/20 ,  H01T13/38 ,  H01B3/12 ,  H01B7/28 ,  C04B35/111

    CPC classification number: H01T13/38 ,  C04B35/111 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3418 ,  C04B2235/3463 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/85 ,  C04B2235/96 ,  H01B3/12 ,  H01B7/2806

    Abstract: A spark plug having an insulator formed of an alumina-based sintered material which contains an Si component and a rare earth element component that satisfy the following conditions (1) and (2): (1) an oxide-reduced amount of the Si component (mass %) is greater than or equal to 0.05 and less than or equal to 0.45; and (2) a ratio of an oxide-reduced amount of the rare earth element component to an oxide-reduced amount of the Si component is greater than or equal to 2.5 and less than or equal to 4.5, and which has alumina grains and an alumina grain boundary phase including a complex oxide crystal phase satisfying the following condition (3): (3) the complex oxide crystal phase contains at least two components selected from among an Al component, an Si component, a Group 2 element component, and a rare earth element component.

    Abstract translation: 一种火花塞，其具有由含有Si成分和满足以下条件（1）和（2））的Si成分和稀土元素成分的氧化铝类烧结体形成的绝缘体：（1）氧化物还原量的Si成分 （质量％）大于或等于0.05且小于或等于0.45; 和（2）稀土元素成分的氧化物还原量与Si成分的氧化物还原量的比例大于或等于2.5且小于或等于4.5，并且具有氧化铝颗粒和 氧化铝晶界相包含满足以下条件（3）的复合氧化物晶相：（3）复合氧化物晶相含有选自Al成分，Si成分，2族元素成分和 稀土元素成分。

    Ignition plug
    27.
    发明授权
    Ignition plug 有权
    点火塞

    公开(公告)号：US08970098B1

    公开(公告)日：2015-03-03

    申请号：US14491262

    申请日：2014-09-19

    Applicant: NGK Spark Plug, Co., Ltd.

    Inventor： Toshimasa Saji ,  Hirokazu Kurono ,  Toshitaka Honda

    IPC: H01T13/20 ,  H01T13/38

    CPC classification number: H01T13/38 ,  H01T13/36

    Abstract: An ignition plug includes an insulator having an axial hole extending therethrough in the direction of an axis, a center electrode inserted into a forward end portion of the axial hole, and a metallic shell disposed externally of the insulator. The insulator includes a step portion engaged with an inner circumferential portion of the metallic shell and a leg portion extending forward from the forward end of the step portion. The porosity of the leg portion is 3.0% or less. Among three regions of the leg portion that are radially trisected in a cross section perpendicular to the axis, the outermost region is defined as a first region and the innermost region is defined as a second region. The porosity of the first region is equal to or more than 1.20 times the porosity of the second region.

    Abstract translation: 火花塞包括：绝缘体，其具有沿轴向延伸穿过的轴向孔，插入到轴向孔的前端部的中心电极和设置在绝缘体外部的金属壳。 绝缘体包括与金属壳的内周部接合的台阶部和从台阶部的前端向前延伸的脚部。 腿部的孔隙率为3.0％以下。 在垂直于轴线的横截面中径向三分的脚部分的三个区域中，最外侧区域被定义为第一区域，最内区域被定义为第二区域。 第一区域的孔隙率等于或大于第二区域的孔隙率的1.20倍。

    SPARK PLUG
    28.
    发明申请
    SPARK PLUG 有权
    SPARK插头

    公开(公告)号：US20150047880A1

    公开(公告)日：2015-02-19

    申请号：US14377306

    申请日：2012-11-29

    Applicant: NGK Spark Plug Co., LTD.

    Inventor： Katsuya Takaoka ,  Hirokazu Kurono ,  Toshitaka Honda ,  Syuuichiro Wakizoe ,  Mitsushiro Kondo

    IPC: H01T13/38

    CPC classification number: H01T13/38 ,  B82Y30/00 ,  C04B35/117 ,  C04B35/62655 ,  C04B35/62695 ,  C04B2235/3206 ,  C04B2235/3208 ,  C04B2235/3213 ,  C04B2235/3215 ,  C04B2235/3217 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/3227 ,  C04B2235/3418 ,  C04B2235/781 ,  C04B2235/785 ,  C04B2235/786 ,  C04B2235/788 ,  C04B2235/80 ,  F02P13/00

    Abstract: A spark plug exhibiting excellent withstand voltage characteristics and mechanical strength at high temperature, which are comparable to those at ambient temperature. The spark plug having an insulator formed of an alumina-based sintered material containing: an Al component, an Si component, a Group 2 element component, and a rare earth element component. The amounts of such components satisfy a condition (1): 0.25≦ oxide-reduced amount (mass %) of the Si component ≦1.25, and a condition (2): 1.35≦[(oxide-reduced amount of the Si component)/((oxide-reduced amount of the Group 2 element component)/(oxide-reduced amount of the rare earth element component))]≦7.5. The alumina-based sintered material includes alumina grains, and a glass phase including a crystal phase that satisfies a condition (3) that the crystal phase includes at least one of an aluminate crystal phase and a silicate crystal phase, each having a grain size of 20 to 350 nm.

    Abstract translation: 具有优异的耐高压特性和高温下的机械强度的火花塞，与环境温度相当。 所述火花塞具有绝缘体，所述绝缘体由包含Al组分，Si组分，第2族元素组分和稀土元素组分的氧化铝基烧结材料形成。 这些组分的量满足条件（1）：0.25＆nlE; Si成分的氧化物还原量（质量％）：1.25，条件（2）：1.35＆nlE; [（Si成分的氧化物还原量）/（（第2族元素成分的氧化物还原量 ）/（氧化物还原量的稀土元素成分））]＆nlE; 7.5。 所述氧化铝系烧结体包含氧化铝粒子，以及含有结晶相的玻璃相，所述结晶相满足以下条件（3）：所述结晶相包含铝酸盐结晶相和硅酸盐结晶相中的至少一种， 20〜350nm。

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