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公开(公告)号：US08102106B2
公开(公告)日：2012-01-24
申请号：US12998324
申请日：2009-10-13
摘要： A spark plug having a ground electrode that includes a press-formed recess portion comprised of a first portion with which a working pin has come into contact, and a second portion with which the working pin has not come into contact. A relation B1/B2≧0.05 is satisfied, where B1 represents the depth of the second portion, and B2 represents the depth of the press-formed recess portion.
摘要翻译： 一种具有接地电极的火花塞，包括由工作销接触的第一部分构成的压入凹部，以及工作销未与其接触的第二部分。 满足关系B1 /B2≥0.05，其中B1表示第二部分的深度，B2表示压制成形的凹部的深度。
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公开(公告)号：US20110193469A1
公开(公告)日：2011-08-11
申请号：US12998324
申请日：2009-10-13
摘要： A spark plug having a ground electrode that includes a press-formed recess portion comprised of a first portion with which a working pin has come into contact, and a second portion with which the working pin has not come into contact. A relation B1/B2≧0.05 is satisfied, where B1 represents the depth of the second portion, and B2 represents the depth of the press-formed recess portion.
摘要翻译： 一种具有接地电极的火花塞，包括由工作销接触的第一部分构成的压入凹部，以及工作销未与其接触的第二部分。 满足关系B1 /B2≥0.05，其中B1表示第二部分的深度，B2表示压制成形的凹部的深度。
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公开(公告)号：US09231382B2
公开(公告)日：2016-01-05
申请号：US13881391
申请日：2011-08-18
CPC分类号： H01T13/40 , F02P3/00 , F02P3/01 , F02P3/02 , F02P9/002 , F02P9/007 , F02P15/10 , F02P23/04 , F02P23/045
摘要： A technique of improving the life of a spark plug which generates spark discharge and AC plasma. A plasma ignition device includes a power control section which reduces AC power P after generation of AC plasma in an AC power supply period Sa during which the AC power P is continuously supplied to a spark plug within a maintainable power range Rp within which the AC plasma can be maintained.
摘要翻译： 一种提高产生火花放电和AC等离子体的火花塞寿命的技术。 等离子体点火装置包括功率控制部分，其在交流电源周期Sa中产生AC等离子体之后降低AC功率P，在AC电源周期Sa期间，在可交流功率范围Rp内将AC功率P连续提供给火花塞，其中AC等离子体 可以维护。
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公开(公告)号：US08946977B2
公开(公告)日：2015-02-03
申请号：US14126930
申请日：2012-04-10
摘要： A spark plug includes a center electrode, a ground electrode, and a tip joined to the center electrode and forming a spark discharge gap with the ground electrode. The tip is joined to the center electrode via a fusion zone, which has an exposed surface exposed to the external environment. In a section containing an axis and the center of the exposed surface, C−B≧0.02 is satisfied, where C (mm) is the distance on the side surface of the tip between the fusion zone and the distal end of the tip, and B (mm) is the distance between a distal end surface of the tip and a portion of the fusion zone located closer to the axis than the side surface of the tip and located closest in the fusion zone to the distal end surface of the tip.
摘要翻译： 火花塞包括中心电极，接地电极和连接到中心电极的尖端，并与接地电极形成火花放电间隙。 尖端经由熔融区域连接到中心电极，熔融区域具有暴露于外部环境的暴露表面。 在包含轴线和暴露表面的中心的部分中，满足C-B≥0.02，其中C（mm）是熔融区域和尖端的远端之间的尖端的侧表面上的距离，以及 B（mm）是尖端的远端表面和位于比尖端的侧表面更靠近轴线的熔融区域的部分之间的距离，并且位于熔融区域中最靠近尖端的远端表面。
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公开(公告)号：US08471448B2
公开(公告)日：2013-06-25
申请号：US13198065
申请日：2011-08-04
IPC分类号： H01T13/04
摘要： High-frequency plasma spark plug includes an insulator which has an axial hole extending in the axis direction, a center electrode inserted into a distal end side of the axial hole, a terminal electrode inserted into a rear end side of the axial hole, and being electrically connected to the center electrode, and a cylindrical main fitting mounted on an outer periphery of the insulator. With respect to a coaxial cable, the inner conductor is connected to the terminal electrode and the outer conductor is connected to the main fitting. High frequency power generated by a predetermined high-frequency power source is supplied via the coaxial cable thus generating high frequency plasma. The main fitting includes a large diameter portion which bulges radially outward and a connection portion which is brought into contact with the outer conductor.
摘要翻译： 高频等离子体火花塞包括：具有沿轴向延伸的轴向孔的绝缘体，插入到轴孔的前端侧的中心电极，插入轴孔的后端侧的端子电极， 电连接到中心电极，以及安装在绝缘体的外周上的圆柱形主配件。 对于同轴电缆，内部导体连接到端子电极，外部导体连接到主配件。 由同轴电缆提供由预定的高频电源产生的高频功率，从而产生高频等离子体。 主配件包括径向向外凸出的大直径部分和与外导体接触的连接部分。
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公开(公告)号：US20110241524A1
公开(公告)日：2011-10-06
申请号：US13123371
申请日：2009-10-09
摘要： There is provided a spark plug 100 with a ground electrode 30, wherein a protrusion amount A of a protruding portion 36 satisfies a relationship of 0.4 mm≦A≦1.0 mm and wherein a width B from a front end surface 31 to a press recessed portion 37 satisfies a relationship of 0.4 mm≦B≦2.5 mm.
摘要翻译： 提供了具有接地电极30的火花塞100，其中突出部分36的突出量A满足0.4mm＆amp; NlE; A＆NlE; 1.0mm的关系，并且其中从前端表面31到压入凹部 37满足0.4 mm＆nlE; B＆nlE; 2.5 mm的关系。
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公开(公告)号：US08976504B2
公开(公告)日：2015-03-10
申请号：US13817544
申请日：2011-07-11
摘要： An ignition system having a spark plug, a discharge power supply, and an AC power supply. Voltage from the discharge power supply and AC power from the AC power supply are supplied to a spark discharge gap through an electrode of the spark plug. The AC power from the AC power supply is applied to a spark generated by the voltage from the discharge power supply in the spark discharge gap.
摘要翻译： 具有火花塞，放电电源和交流电源的点火系统。 来自放电电源的电压和来自交流电源的AC电力通过火花塞的电极供给到火花放电间隙。 来自交流电源的交流电源被施加到由放电电源在火花放电间隙中的电压产生的火花。
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公开(公告)号：US08629605B2
公开(公告)日：2014-01-14
申请号：US13266544
申请日：2010-04-30
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。
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公开(公告)号：US08466608B2
公开(公告)日：2013-06-18
申请号：US13123371
申请日：2009-10-09
摘要： There is provided a spark plug 100 with a ground electrode 30, wherein a protrusion amount A of a protruding portion 36 satisfies a relationship of 0.4 mm≦A≦1.0 mm and wherein a width B from a front end surface 31 to a press recessed portion 37 satisfies a relationship of 0.4 mm≦B≦2.5 mm.
摘要翻译： 提供了具有接地电极30的火花塞100，其中突出部分36的突出量A满足距离A为1.0mm的0.4mm @的关系，并且其中从前端表面31到压入凹部的宽度B 37满足0.4mm @ B @ 2.5mm的关系。
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公开(公告)号：US20130033188A1
公开(公告)日：2013-02-07
申请号：US13565937
申请日：2012-08-03
摘要： A technique for lowering power loss involved in supply of high-frequency electric power to an ignition plug. The ignition plug includes a tubular insulator having an axial bore extending therethrough; a center electrode disposed in the axial bore; a metal terminal disposed rearward of the center electrode in the axial bore, electrically connected to the center electrode, and supplied with high-frequency electric power from an external source; a metallic shell disposed to circumferentially surround the insulator; and a ground electrode electrically connected to the metallic shell and adapted to generate plasma in cooperation with the center electrode through supply of high-frequency electric power to the metal terminal. At least a portion of the inner surface of the axial bore is coated with metal coating. The center electrode and the metal terminal are in electrical contact with the metal coating.
摘要翻译： 一种用于降低向火花塞供应高频电力的功率损耗的技术。 火花塞包括具有延伸穿过其中的轴向孔的管状绝缘体; 设置在所述轴向孔中的中心电极; 金属端子，其设置在所述轴向孔中的所述中心电极的后方，与所述中心电极电连接，并从外部源供给高频电力; 设置成周向包围绝缘体的金属壳; 以及电连接到所述金属壳并且适于通过向所述金属端子提供高频电力而与所述中心电极协作产生等离子体的接地电极。 轴向孔的内表面的至少一部分涂覆有金属涂层。 中心电极和金属端子与金属涂层电接触。
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