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61. 发明申请

US20140152169A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20140152169A1
公开(公告)日：2014-06-05
申请号：US14131937
申请日：2012-05-15
申请人： Kaori Suzuki
发明人： Kaori Suzuki
IPC分类号： H01T13/20
CPC分类号： H01T13/20 , H01T13/32
摘要： A spark plug includes a center electrode a ceramic insulator provided with an axial hole, a metal shell, and a ground electrode having a facing surface that faces a leading end surface of the center electrode. An annular space is formed between an outer peripheral surface of the center electrode and an inner peripheral surface of the axial hole and is opened toward a leading end side, and when C (mm) is a distance between the outer peripheral surface of the center electrode and the inner peripheral surface of the axial hole in the opening of the annular space, C≧0.2 mm is satisfied. In a cross-section which includes the axial line and is orthogonal to the center axis of the ground electrode, a contour line of lateral surfaces of the ground electrode has a curved shape convexed outward.
摘要翻译：火花塞包括中心电极，设置有轴向孔的陶瓷绝缘体，金属壳和具有面向中心电极的前端面的面对面的接地电极。在中心电极的外周面和轴孔的内周面之间形成有环状空间，朝向前端侧开口，当C（mm）为中心电极的外周面之间的距离并且环形空间的开口中的轴向孔的内周表面满足C≥0.2mm。在包括轴线并且与接地电极的中心轴线正交的横截面中，接地电极的侧面的轮廓线具有向外凸出的弯曲形状。

62. 发明授权

US08710725B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US08710725B2
公开(公告)日：2014-04-29
申请号：US13876497
申请日：2011-09-27
申请人： Haruki Yoshida , Toshitaka Honda
发明人： Haruki Yoshida , Toshitaka Honda
IPC分类号： H01T13/02
CPC分类号： H01T13/20 , H01T13/34
摘要： A spark plug having improved load life performance and fixing strength of a metallic terminal to an insulator, and which reduces the incidence of breakage of the insulator when the metallic terminal is inserted into the axial hole of the insulator. The spark plug of the present invention is characterized in that the distance ((B−A)/2) between the forward end portion of the metallic terminal and the wall surface of an intermediate diameter portion of the axial hole of the insulator falls within a range of 0.02 mm to 0.2 mm, the shrinkage amount (D−C) of a connecting portion falls within a range of 6 mm to 27 mm, and the Vickers hardness of the metallic terminal at ordinary temperature falls within a range of 100 Hv to 430 Hv.
摘要翻译：一种火花塞，其具有改善的负载寿命性能和金属端子固定在绝缘体上的强度，并且当金属端子插入到绝缘体的轴向孔中时，这减少了绝缘体的断裂入射。本发明的火花塞的特征在于，金属端子的前端部与绝缘体的轴孔的中间直径部的壁面之间的距离（（A-A）/ 2）落入范围为0.02mm至0.2mm，连接部分的收缩量（D-C）落在6mm至27mm的范围内，并且常温下金属端子的维氏硬度落在100HV至 430 Hv。

63. 发明申请

US20140077683A1 SPARK PLUG WITH CERAMIC ELECTRODE TIP 有权
标题翻译：火花塞与陶瓷电极提示
公开(公告)号：US20140077683A1
公开(公告)日：2014-03-20
申请号：US14085293
申请日：2013-11-20
申请人： Federal-Mogul Ignition Company
发明人： William J. Walker, JR.
IPC分类号： H01T13/39 , H01T21/02
CPC分类号： H01T13/39 , H01T13/20 , H01T21/02
摘要： A spark plug (20) for igniting a mixture of fuel and air of an internal combustion engine comprises a center electrode (22) and a ground electrode (24). At least one of the electrodes (22, 24) includes a body portion (28, 30) formed of thermally conductive material and a firing tip (32, 34) disposed on the body portion (28, 30). The firing tip (32, 34) includes a ceramic material, providing an exposed firing surface (36, 38). The ceramic material is an electrically conductive, monolithic ceramic material. Examples of preferred ceramic materials include titanium diboride, silicon carbide, ternary carbide, and ternary nitride. The ceramic material can also include oxides, borides, nitrides, carbides, silicides, or MAX phases.
摘要翻译：用于点燃内燃机的燃料和空气的混合物的火花塞（20）包括中心电极（22）和接地电极（24）。电极（22,24）中的至少一个包括由导热材料形成的主体部分（28,30）和设置在主体部分（28,30）上的击发尖端（32,34）。烧制尖端（32,34）包括陶瓷材料，提供暴露的烧制表面（36,38）。陶瓷材料是导电的整体陶瓷材料。优选的陶瓷材料的实例包括二硼化钛，碳化硅，三元碳化物和三元氮化物。陶瓷材料还可以包括氧化物，硼化物，氮化物，碳化物，硅化物或MAX相。

64. 发明授权

US08653724B2 Spark plug for internal combustion engine having a ground electrode with a protrusion having improved erosion resistance and method of manufacturing same 有权
标题翻译：具有具有具有改善的耐腐蚀性的突起的接地电极的内燃机的火花塞及其制造方法
公开(公告)号：US08653724B2
公开(公告)日：2014-02-18
申请号：US13138581
申请日：2010-03-08
申请人： Akira Suzuki
发明人： Akira Suzuki
IPC分类号： H01J13/20 , H01J9/00
CPC分类号： H01T13/20 , H01T13/32 , H01T21/02
摘要： An objective is to provide a spark plug in which a ground electrode has a protrusion formed from the same material as that used to form the ground electrode and the heat transfer performance of the protrusion is improved to thereby improve erosion resistance. A spark plug 1 includes a rodlike center electrode 5 extending in the direction of an axis CL1; a substantially cylindrical insulator 2 provided externally of the outer circumference of the center electrode 5; a substantially cylindrical metallic shell 3 provided externally of the outer circumference of the insulator 2; and a ground electrode 27 extending from a front end portion 26 of the metallic shell 3 and forming a spark discharge gap 35 between a distal end portion thereof and a front end portion of the center electrode 5. A protrusion 28 projecting toward the center electrode 5 and forming the spark discharge gap 35 in cooperation with the front end portion of the center electrode 5 is formed at the distal end portion of the ground electrode 27 from the same material as that used to form the ground electrode 27. At least the protrusion 28 has an average crystal grain size of 20 μm to 200 μm inclusive.
摘要翻译：目的是提供火花塞，其中接地电极具有由与用于形成接地电极的材料相同的材料形成的突起，并且突起的传热性能得到改善，从而提高抗侵蚀性。火花塞1包括沿轴线CL1的方向延伸的杆状中心电极5; 设置在中心电极5的外周的外侧的大致圆筒状的绝缘体2; 设置在绝缘体2的外周的外侧的大致圆筒状的金属壳体3; 以及从金属壳3的前端部26延伸出的接地电极27，在其前端部与中心电极5的前端部之间形成火花放电间隙35.向中心电极5突出的突起28 与中心电极5的前端部一起形成火花放电间隙35由与形成接地电极27的材料相同的材料形成在接地电极27的前端部。至少突起28 其平均晶粒尺寸为20〜200μm。

65. 发明申请

US20140042893A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20140042893A1
公开(公告)日：2014-02-13
申请号：US13957918
申请日：2013-08-02
申请人： NGK SPARK PLUG CO., LTD.
发明人： Yasushi SAKAKURA , Yukinobu HASEGAWA , Kei TAKAHASHI
IPC分类号： H01T13/32
CPC分类号： H01T13/32 , H01T13/20 , H01T13/39
摘要： A spark plug includes a tip joined to a center electrode. The coefficient of linear thermal expansion of the center electrode is greater than that of the tip. The tip has a gap-forming portion having a maximum width of 1.2 mm or greater and forming a gap in cooperation with the ground electrode and a to-be-joined portion joined to the center electrode. At a position A which is shifted 0.1 mm from the forward end of the outer surface of the fusion portion toward the forward end side, the width of the to-be-joined portion measured on the cross section is smaller than the width of the gap-forming portion. The to-be-joined portion satisfies Dtw/Dw≦1.1, where Dtw represents the width of the to-be-joined portion at the position A, and Dw represents the width of the fusion portion at the forward end of the outer surface thereof.
摘要翻译：火花塞包括连接到中心电极的尖端。中心电极的线性热膨胀系数大于尖端的线性热膨胀系数。尖端具有最大宽度为1.2mm以上的间隙形成部，与接地电极和与中心电极接合的被接合部配合形成间隙。在从熔融部的外表面的前端朝向前端侧偏移0.1mm的位置A处，在截面上测量的被接合部的宽度小于间隙的宽度形成部分。待接合部分满足Dtw / Dw @ 1.1，其中Dtw表示在位置A处的被接合部分的宽度，Dw表示在其外表面的前端处的熔化部分的宽度。

66. 发明授权

US08643263B2 Insulator strength by seat geometry 有权
标题翻译：绝缘子强度由座椅几何形状
公开(公告)号：US08643263B2
公开(公告)日：2014-02-04
申请号：US13709237
申请日：2012-12-10
申请人： John Antony Burrows
发明人： John Antony Burrows
IPC分类号： H01T13/20 , H01T13/00
CPC分类号： H01T13/20 , H01T13/36 , H01T21/02
摘要： A spark plug (20) includes an insulator seat angle (αi) of 35° to 50° and an increased insulator thickness (ti) in selected areas around the insulator seat (28). The insulator seat angle (αi) is greater than or equal to a boundary value provided by the equation: 90°−a cos [1−(R1−R2)÷(R4+R5)], and preferably not greater than 150% of the boundary value. The radii (R1, R2, R3, R4, R5) can be adjusted to maximize R4 while maintaining an acceptable R2. A gasket is compressed between the insulator (22) and shell (58), and the inner gasket thickness (tg2) is greater than or equal to 70% of the outer gasket thickness (tg1).
摘要翻译：火花塞（20）包括在绝缘体座（28）周围的选定区域中35°至50°的绝缘体座角（alphai）和增加的绝缘体厚度（ti）。绝缘子座角度（alphai）大于或等于由以下等式提供的边界值：90°-a cos [1-（R1-R2）÷（R4 + R5）]，优选不大于边界值。可以调节半径（R1，R2，R3，R4，R5）以最大化R4，同时保持可接受的R2。垫片在绝缘体（22）和外壳（58）之间被压缩，内衬垫厚度（tg2）大于或等于外垫片厚度（tg1）的70％。

67. 发明申请

US20140020667A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE AND IGNITION SYSTEM HAVING SPARK PLUG 审中-公开
标题翻译：用于内燃机的火花塞和具有火花塞的点火系统
公开(公告)号：US20140020667A1
公开(公告)日：2014-01-23
申请号：US13910354
申请日：2013-06-05
申请人： DENSO CORPORATION
发明人： Hiroya ISHIGURO
IPC分类号： H01T13/20 , F02P3/02
CPC分类号： H01T13/20 , F02P3/02 , H01F38/12 , H01T13/44
摘要： A spark plug for an internal combustion engine has a cylindrical insulator, a center electrode held inside of the insulator, and, a terminal portion held inside of the insulator and electrically connected to the center electrode. The insulator has a insertion portion arranged closer to the base end side than the housing is, the insertion portion being inserted into a cylindrical plug cap. The insertion portion has a non-fit portion formed at the base end of the insulator, and, a fit portion formed to the head end side of the non-fit portion, an outer diameter of the non-fit portion being equal to or smaller than an inner diameter of the plug cap, the fit portion being fitted in the inner periphery surface of the plug cap.
摘要翻译：用于内燃机的火花塞具有圆柱形绝缘体，保持在绝缘体内部的中心电极，以及保持在绝缘体内部并与中心电极电连接的端子部分。绝缘体具有比壳体更靠近基端侧布置的插入部，插入部插入圆柱形塞帽中。插入部分具有形成在绝缘体的基端的非配合部分，并且形成在非配合部分的头端侧的配合部分，非配合部分的外径等于或小于比插头盖的内径大，嵌合部嵌合于插头盖的内周面。

68. 发明授权

US08629605B2 Spark plug having shaped insulator 有权
标题翻译：具有成型绝缘体的火花塞
公开(公告)号：US08629605B2
公开(公告)日：2014-01-14
申请号：US13266544
申请日：2010-04-30
申请人： Kohei Katsuraya , Hiroyuki Kameda , Katsutoshi Nakayama
发明人： Kohei Katsuraya , Hiroyuki Kameda , Katsutoshi Nakayama
IPC分类号： H01T13/20 , H01T13/14
CPC分类号： H01T13/20 , H01T13/32
摘要： A spark plug includes a center electrode extending in an axial direction; an insulator formed externally of the outer circumference of the center electrode; a metallic shell formed externally of the outer circumference of the insulator and having a ledge which supports the insulator; and a ground electrode joined to the metallic shell. The insulator has a support portion which faces the ledge. A “frontward direction” is defined as the direction parallel to the axial direction toward a spark portion formed between the center electrode and the ground electrode. The insulator has a diameter reduction portion whose outside diameter reduces along the frontward direction from the support portion, and a diameter increase portion whose outside diameter increases along the frontward direction from the front end of the diameter reduction portion. This restrains the generation of leak current while maintaining heat resistance of the spark plug.
摘要翻译：火花塞包括沿轴向延伸的中心电极; 绝缘体，形成在中心电极的外周的外侧; 金属外壳，形成在绝缘体的外周的外部，并具有支撑绝缘体的凸缘; 和与金属壳接合的接地电极。绝缘体具有面向突出部的支撑部。 “向前方向”被定义为朝向形成在中心电极和接地电极之间的火花部分的轴向平行的方向。该绝缘体具有直径减小部分，该直径减小部分的外径沿着从支撑部分的向前方向减小，并且其直径从直径减小部分的前端沿着向前方向增加的直径增大部分。这样可以在保持火花塞的耐热性的同时抑制泄漏电流的产生。

69. 发明申请

US20130334954A1 SPARK PLUG AND METHOD OF MANUFACTURING THE SAME 有权
标题翻译：火花塞及其制造方法
公开(公告)号：US20130334954A1
公开(公告)日：2013-12-19
申请号：US13914804
申请日：2013-06-11
申请人： NGK SPARK PLUG CO., LTD.
发明人： Kenji Moritani , Hiroaki Nasu , Makoto Sugita
IPC分类号： H01T13/20
CPC分类号： H01T13/20 , H01T21/02
摘要： A spark plug includes an insulator extending along an axis and a metal shell provided on the outer periphery of the insulator. The metal shell includes a thread portion for threadedly engaging with a mounting hole of an internal combustion engine and a seat portion having a tapered surface whose outer diameter decreases gradually toward a leading end side. The tapered surface contacts with a bearing surface of the internal combustion engine when the thread portion is engaged with the mounting hole. Annular protruding portions or a helical protruding portion are formed within a range on the tapered surface from an outermost peripheral portion to a part forming an outer diameter occupying 95% of the diameter of the outermost peripheral portion. The arithmetic mean roughness of a surface of the tapered surface within the range is set to 1-5 μm on a section including the axis.
摘要翻译：火花塞包括沿着轴线延伸的绝缘体和设置在绝缘体的外周上的金属壳。金属壳包括用于与内燃机的安装孔螺纹接合的螺纹部分和具有锥形表面的座部，其外径朝向前端侧逐渐减小。当螺纹部与安装孔接合时，锥面与内燃机的支承面接触。环形突出部或螺旋形突出部形成在从最外周部到形成外径占最外周部的直径的95％的部分的锥形面的范围内。该范围内的锥面的表面的算术平均粗糙度在包括轴的截面上设定为1-5μm。

70. 发明申请

US20130313962A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20130313962A1
公开(公告)日：2013-11-28
申请号：US13984561
申请日：2012-02-13
申请人： Osamu Yoshimoto , Takehito Kuno , Tomoo Tanaka , Tomonori Kanemaru
发明人： Osamu Yoshimoto , Takehito Kuno , Tomoo Tanaka , Tomonori Kanemaru
IPC分类号： H01T13/06
CPC分类号： H01T13/06 , C22C19/05 , H01T13/20 , H01T13/39
摘要： A spark plug including a center electrode; an insulator; a metallic shell; and a ground electrode, wherein at least one of the center electrode and the ground electrode has thereon an intermediate member which connects the center electrode or the ground electrode to a noble metal tip. The intermediate member has a tip-bonding portion to which the noble metal tip is bonded, and an electrode-bonding portion which has a diameter greater than that of the tip-bonding portion, and which is bonded to the center electrode or the ground electrode. The intermediate member contains nickel (Ni) as a main component, and also contains chromium (Cr) in an amount of 15 to 25 wt. %. The intermediate member contains, in a surface portion thereof, silicon (Si) in an amount per unit volume of 0.04 mg/mm3 to 0.12 mg/mm3, and aluminum (Al) in an amount per unit volume of 0.03 mg/mm3 to 0.10 mg/mm3.
摘要翻译：一种包括中心电极的火花塞; 绝缘体金属壳; 和接地电极，其中中心电极和接地电极中的至少一个具有将中心电极或接地电极连接到贵金属电极头的中间部件。中间构件具有接合贵金属电极头的尖端接合部分和直径大于尖端接合部分直径的电极接合部分，并且接合到中心电极或接地电极。中间构件含有镍（Ni）作为主要成分，并且还含有15〜25重量％的铬（Cr）。％。中间部件的表面部分含有每单位体积的量为0.04mg / mm 3〜0.12mg / mm 3的硅（Si），每单位体积的铝（Al）为0.03mg / mm 3〜0.10 mg / mm3。

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