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公开(公告)号：US08866370B2
公开(公告)日：2014-10-21
申请号：US13516874
申请日：2011-01-19
申请人： Tsutomu Shibata , Takaaki Kikai , Kenji Nunome , Osamu Yoshimoto
发明人： Tsutomu Shibata , Takaaki Kikai , Kenji Nunome , Osamu Yoshimoto
摘要： A spark plug including a center electrode and a ground electrode having a core portion and an outer layer covering the core portion, the core portion being formed from a material having a thermal conductivity higher than that of the outer layer. At least a portion in which thickness of the outer layer is 0.5 mm or less is present at a cross-section perpendicular to a direction in which the ground electrode is extended. Further, the composition of the electrode material forming the outer layer is as follows: Ni is 96 mass % or more, total of at least one kind selected from Y and rare earth elements is 0.05 mass % or more, Al is 0.5 mass % or less, and Si is 0.5 mass % or more and 1.5 mass % or less, where the total of Ni, Y, rare earth elements, Al, Si does not exceed 100 mass %.
摘要翻译： 一种火花塞，其包括中心电极和接地电极，所述接地电极具有芯部和覆盖所述芯部的外层，所述芯部由导热率高于外层的材料形成。 在与接地电极延伸的方向垂直的截面上存在至少一部分外层的厚度为0.5mm以下的部分。 此外，形成外层的电极材料的组成如下：Ni为96质量％以上，选自Y和稀土元素中的至少一种的总和为0.05质量％以上，Al为0.5质量％以上 较少，Si为0.5质量％以上且1.5质量％以下，其中，Ni，Y，稀土类元素Al，Si的合计量不超过100质量％。
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公开(公告)号：US07038363B2
公开(公告)日：2006-05-02
申请号：US10746379
申请日：2003-12-29
申请人： Kenji Nunome
发明人： Kenji Nunome
IPC分类号： H01T13/20
CPC分类号： H01T13/38
摘要： A spark plug comprising an insulator, on at least a part of a surface of the insulator being formed a marking layer and a glaze layer, wherein the marking layer is exposed on the surface of the insulator and has a composition as described herein.
摘要翻译： 一种包括绝缘体的火花塞，在所述绝缘体的表面的至少一部分上形成标记层和釉层，其中所述标记层暴露在所述绝缘体的表面上并且具有如本文所述的组成。
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公开(公告)号：US20060043855A1
公开(公告)日：2006-03-02
申请号：US10519075
申请日：2004-03-22
IPC分类号： H01T13/02
CPC分类号： H01T13/39 , B22F2998/10 , C22C1/0466 , B22F3/02 , B22F3/15
摘要： An object of the invention is to provide a higher-durability spark plug provided with a center electrode and a side electrode to form a spark discharge gap between the center electrode and the side electrode, at least one of the center electrode and the side electrode including a precious metal member facing the spark discharge gap, in which a sweating phenomenon of the precious metal member can be suppressed while spark abrasion, oxidation abrasion and abnormal abrasion of the precious metal member can be suppressed. In the invention, the spark plug (100) comprises a center electrode (3), and a side electrode (4) located on one side of the center electrode (3) so that a spark discharge gap (G) is formed between the center electrode (3) and the side electrode (4). The center electrode (3) and the side electrode (4) include first and second precious metal tips (33) and (43) respectively. The first and second precious metal tips (33) and (43) face the spark discharge gap (G) so that the spark discharge gap (G) is formed. The precious metal tips (33) and so on contain Ir as a main component, 0.3 mass % to 43 mass % of Rh, 5.2 mass % to 41 mass % of Ru, and 0.4 mass % to 19 mass % of Ni.
摘要翻译： 本发明的目的是提供一种具有中心电极和侧电极的高耐久性火花塞，以在中心电极和侧电极之间形成火花放电间隙，至少一个中心电极和侧电极包括 面对火花放电间隙的贵金属构件可以抑制贵金属构件的出汗现象，同时可以抑制贵金属构件的火花磨损，氧化磨损和异常磨损。 在本发明中，火花塞（100）包括中心电极（3）和位于中心电极（3）一侧的侧电极（4），使得在中心电极（3）之间形成火花放电间隙（G） 电极（3）和侧电极（4）。 中心电极（3）和侧电极（4）分别包括第一和第二贵金属尖端（33）和（43）。 第一和第二贵金属端头（33）和（43）面对火花放电间隙（G），从而形成火花放电间隙（G）。 贵金属制头（33）等含有Ir为主成分，Rh为0.3质量％〜43质量％，Ru为5.2质量％〜41质量％，Ni为0.4质量％〜19质量％。
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公开(公告)号：US08664842B2
公开(公告)日：2014-03-04
申请号：US13515627
申请日：2011-01-11
申请人： Tomoo Tanaka , Tsutomu Shibata , Osamu Yoshimoto , Takaaki Kikai , Takehito Kuno , Kenji Nunome
发明人： Tomoo Tanaka , Tsutomu Shibata , Osamu Yoshimoto , Takaaki Kikai , Takehito Kuno , Kenji Nunome
摘要： A spark plug including a center electrode and a ground electrode having a gap between the center electrode and the ground electrode, the ground electrode has an outer layer which is formed from an Ni-based alloy and a core portion which is covered by the outer layer and formed from a material having a thermal conductivity higher than that of the outer layer. Further, the melting point of the Ni-based alloy forming the outer layer is 1150° C. or more and 1350° C. or less.
摘要翻译： 一种火花塞，其包括中心电极和接地电极，所述接地电极在所述中心电极和所述接地电极之间具有间隙，所述接地电极具有由Ni基合金形成的外层和被所述外层覆盖的芯部分 并且由具有高于外层的热导率的材料形成。 此外，形成外层的Ni系合金的熔点为1150℃以上且1350℃以下。
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公开(公告)号：US08410674B2
公开(公告)日：2013-04-02
申请号：US13332594
申请日：2011-12-21
申请人： Kenji Nunome
发明人： Kenji Nunome
IPC分类号： H01T13/20
CPC分类号： H01T13/20
摘要： A spark plug includes a tubular metallic shell; a tubular insulator in the tubular metallic shell located at a front end of the metallic shell and having an axial hole extending in the axial direction; and a center electrode inserted into the axial hole. The center electrode has a space-forming portion which forms, in cooperation with a wall surface of the axial hole, an annular space open frontward in the axial direction, and a main body portion extending rearward from the rear end of the space-forming portion. The thickness of the insulator is 0.6 mm or less as measured on a cross section and contains the front end of the metallic shell. The axial distance between the boundary portion and the front end of the metallic shell is 0.4 mm or greater, where the boundary portion is formed between the space-forming portion and the main body portion.
摘要翻译： 火花塞包括管状金属壳; 管状金属外壳中的管状绝缘体，位于金属外壳的前端，并具有沿轴向延伸的轴向孔; 以及插入到轴向孔中的中心电极。 中心电极具有空间形成部分，该空间形成部分与轴向孔的壁表面协同地形成在轴向方向上向前敞开的环形空间，以及从空间形成部分的后端向后延伸的主体部分 。 绝缘体的厚度在横截面上测量为0.6mm或更小，并且包含金属壳的前端。 金属壳体的边界部分和前端之间的轴向距离为0.4mm或更大，其中边界部分形成在空间形成部分和主体部分之间。
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公开(公告)号：US08164242B2
公开(公告)日：2012-04-24
申请号：US12167387
申请日：2008-07-03
申请人： Osamu Yoshimoto , Kenji Nunome , Yoshihiro Nakai , Taichiro Nishikawa , Toru Tanji , Kazuo Yamazaki
发明人： Osamu Yoshimoto , Kenji Nunome , Yoshihiro Nakai , Taichiro Nishikawa , Toru Tanji , Kazuo Yamazaki
摘要： A spark plug (100) includes: a center electrode (2); and a ground electrode (30) which is to be exposed in a combustion chamber of an internal combustion engine and which forms a spark discharge gap with the center electrode (2), wherein at least one of the center electrode (20) and the ground electrode (30) contains an electrode material whose principal component is Ni and in which an intermetallic compound is precipitated at least intergranularly and intragranularly.
摘要翻译： 火花塞（100）包括：中心电极（2）; 以及将暴露在内燃机的燃烧室中并与中心电极（2）形成火花放电间隙的接地电极（30），其中中心电极（20）和地面中的至少一个 电极（30）包含主要成分为Ni的电极材料，其中金属间化合物至少在晶间和晶间析出。
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公开(公告)号：US06559579B2
公开(公告)日：2003-05-06
申请号：US09725180
申请日：2000-11-29
申请人： Hirohito Ito , Kenji Nunome , Makoto Sugimoto , Kuniharu Tanaka , Katsura Matsubara , Yoshihiro Yamamoto , Masaya Ito
发明人： Hirohito Ito , Kenji Nunome , Makoto Sugimoto , Kuniharu Tanaka , Katsura Matsubara , Yoshihiro Yamamoto , Masaya Ito
IPC分类号： H01T1320
CPC分类号： H01T13/38
摘要： An insulator for spark plug comprises an alumina-based sintered body comprising: Al2O3 as a main component; and at least one component (hereinafter referred to as “&bgr; component”) selected from the group consisting of Ca component, Sr component and Ba component, wherein the alumina-based sintered body comprises particles comprising a compound comprising the &bgr; component and Al component, the compound having a molar ratio of the Al component to the &bgr; component of 4.5 to 6.7 as calculated in terms of oxides thereof, and has a relative density of 90% or more.
摘要翻译： 一种用于火花塞的绝缘体包括：氧化铝基烧结体，其包括：Al 2 O 3作为主要成分; 以及选自由Ca成分，Sr成分和Ba成分组成的组中的至少一种成分（以下称为“β成分”），其中，所述氧化铝系烧结体包含含有β成分和Al成分的化合物的粒子， 所述化合物的Al成分与β成分的摩尔比以其氧化物计算为4.5〜6.7，相对密度为90％以上。
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公开(公告)号：US20120256530A1
公开(公告)日：2012-10-11
申请号：US13516874
申请日：2011-01-19
申请人： Tsutomu Shibata , Takaaki Kikai , Kenji Nunome , Osamu Yoshimoto
发明人： Tsutomu Shibata , Takaaki Kikai , Kenji Nunome , Osamu Yoshimoto
IPC分类号： H01T13/39
摘要： A spark plug including a center electrode and a ground electrode having a core portion and an outer layer covering the core portion, the core portion being formed from a material having a thermal conductivity higher than that of the outer layer. At least a portion in which thickness of the outer layer is 0.5 mm or less is present at a cross-section perpendicular to a direction in which the ground electrode is extended. Further, the composition of the electrode material forming the outer layer is as follows: Ni is 96 mass % or more, total of at least one kind selected from Y and rare earth elements is 0.05 mass % or more, Al is 0.5 mass % or less, and Si is 0.5 mass % or more and 1.5 mass % or less, where the total of Ni, Y, rare earth elements, Al, Si does not exceed 100 mass %.
摘要翻译： 一种火花塞，其包括中心电极和接地电极，所述接地电极具有芯部和覆盖所述芯部的外层，所述芯部由导热率高于外层的材料形成。 在与接地电极延伸的方向垂直的截面上存在至少一部分外层的厚度为0.5mm以下的部分。 此外，形成外层的电极材料的组成如下：Ni为96质量％以上，选自Y和稀土元素中的至少一种的总和为0.05质量％以上，Al为0.5质量％以上 较少，Si为0.5质量％以上且1.5质量％以下，其中，Ni，Y，稀土类元素Al，Si的合计量不超过100质量％。
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公开(公告)号：US08283846B2
公开(公告)日：2012-10-09
申请号：US13259219
申请日：2010-10-15
CPC分类号： H01T13/39 , C22C19/058
摘要： The object of the invention is to provide a spark plug including a central electrode and/or a ground electrode with a gap, which can suppress generation of corrosion-like generated foreign substances while maintaining high thermal conductivity and high strength. The gap between the central electrode and the ground electrode with at least one of the central electrode and the ground electrode formed from an electrode material including 96% by mass or more of Ni, in which the electrode material includes a total content of from 0.05% by mass to 0.45% by mass of at least one selected from a group consisting of Y and rare earth elements, 0.05% by mass or more of Mn, and a total content of 0.01% by mass or more of at least one selected from a group consisting of Ti, V, and Nb, and the ratio (a/b) of the total content (a) of Ti, V, and Nb to the content (b) of Mn is from 0.02 to 0.40.
摘要翻译： 本发明的目的是提供一种火花塞，其包括具有间隙的中心电极和/或接地电极，其可以在保持高导热性和高强度的同时抑制腐蚀状产生的异物的产生。 中心电极和接地电极之间的间隙由中心电极和接地电极中的至少一个由包含96质量％以上的Ni的电极材料形成，其中电极材料的总含量为0.05％ 以质量计至0.45质量％的选自Y和稀土元素中的至少一种，Mn为0.05质量％以上，总含量为0.01质量％以上的至少一种选自 由Ti，V和Nb组成的组中，Ti，V和Nb的总含量（a）与Mn的含量（b）的比（a / b）为0.02〜0.40。
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10.发明申请SPARK PLUG FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR MANUFACTURING SPARK PLUG 有权用于内燃机的火花塞和制造火花塞的方法公开(公告)号：US20100264803A1
公开(公告)日：2010-10-21
申请号：US12741901
申请日：2008-11-20
申请人： Kenji Nunome , Hiroaki Kuki , Hiroyuki Kameda , Kazumasa Yoshida
发明人： Kenji Nunome , Hiroaki Kuki , Hiroyuki Kameda , Kazumasa Yoshida
摘要： A spark plug including a center electrode and a ground electrode. A center electrode noble metal tip is joined to a leading end portion of a center electrode, and a ground electrode noble metal tip is joined to a center-electrode-side side surface of the ground electrode. A distal end portion of the ground electrode noble metal tip protrudes from a distal-end surface of the ground electrode by 0.1 mm to 1.5 mm. A center-electrode-side side surface of the ground electrode noble metal tip projects from a center-electrode-side side surface by 0.15 mm to 0.6 mm. The ground electrode includes chamfered portions. Thickness lengths and widthwise lengths of the respective chamfered portions achieved within a cross section perpendicular to a center axis of the ground electrode are set to 0.2 mm or more.
摘要翻译： 一种包括中心电极和接地电极的火花塞。 中心电极用贵金属电极头接合于中心电极的前端部，接地电极用贵金属电极头接合于接地电极的中心电极侧面。 接地电极用贵金属电极头的前端部从接地电极的前端面突出0.1mm〜1.5mm。 接地电极用贵金属电极头的中心电极侧面从中心电极侧面突出0.15mm〜0.6mm。 接地电极包括倒角部分。 在与接地电极的中心轴垂直的截面内实现的各个倒角部的厚度长度和宽度方向的长度设定为0.2mm以上。
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