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公开(公告)号：US10270226B2
公开(公告)日：2019-04-23
申请号：US15605223
申请日：2017-05-25
摘要： An extruded insulator for a spark plug that is made in a manner that minimizes pores, relics and/or other defects in the insulator microstructure so that the overall dielectric strength or performance of the insulator is improved. The extruded insulator avoids many of the drawbacks associated with such defects, but also has a stepped internal bore for receiving a center electrode. In one embodiment, the extruded insulator is made with a method that uses a multi-phase extrusion process to extrude a ceramic paste around an elongated arbor and form an extruded section, and then removes the arbor from the extruded section to reveal a stepped internal bore.
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公开(公告)号：US10044172B2
公开(公告)日：2018-08-07
申请号：US13870631
申请日：2013-04-25
发明人： Shuwei Ma
IPC分类号： H01T13/39
CPC分类号： H01T13/39
摘要： An electrode material that may be used in spark plugs and other ignition devices including industrial plugs, aviation igniters, glow plugs, or any other device that is used to ignite an air/fuel mixture in an engine. In one embodiment, the electrode material is a ruthenium-based material that includes ruthenium (Ru) as the single largest constituent on a wt % basis, and at least one of rhenium (Re) or tungsten (W). The electrode material may further include one or more precious metals and/or rare earth metals. The electrode material may be used to form the center electrode, the ground electrode, firing tips, or other firing tip components.
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公开(公告)号：US09709018B2
公开(公告)日：2017-07-18
申请号：US15095436
申请日：2016-04-11
摘要： The invention provides a system and method for controlling corona discharge. A driver circuit provides energy to the corona igniter and detects any arc formation. Optionally, in response to each arc formation, the energy provided to the corona igniter is shut off for a short time to dissipate the arc. Once the arc dissipates, the energy is applied again to restore the corona discharge. The driver circuit obtains information relating to the corona discharge, such as timing and number of arc formations. A control unit adjusts the energy provided to the corona igniter, shut-off time, or the duration of the corona event based on the information. The adjusted energy levels and duration are applied during subsequent corona events. For example, the voltage level could be reduced or the shutoff time could be increased to limit arc formations and increase the size of the corona discharge during the subsequent corona events.
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公开(公告)号：US09304059B2
公开(公告)日：2016-04-05
申请号：US13957025
申请日：2013-08-01
发明人： John A. Burrows , Paul Tinwell
CPC分类号： G01M15/08 , G01L23/222
摘要： A spark plug assembly has a ceramic insulator with a metal outer shell surrounding at least a portion of the insulator. A ground electrode is operatively attached to the outer shell and a center electrode having an elongate body extends through the insulator. The center electrode and the ground electrode provide a spark gap. A force sensor is received about the insulator. An annular inner shell is received between the outer shell and the insulator, wherein the inner shell has a surface configured to confront the insulator along an axial direction.
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公开(公告)号：US09231380B2
公开(公告)日：2016-01-05
申请号：US13943423
申请日：2013-07-16
发明人： Shuwei Ma
IPC分类号： H01T13/39
CPC分类号： H01T13/39
摘要： An electrode material for use with spark plugs and other ignition devices. The electrode material is a two-phase composite material that includes a matrix component and a dispersed component embedded in the matrix component. In a preferred embodiment, the matrix component is a precious-metal based material and the dispersed component includes a material that exhibits a high melting point and a low work function such as, for example, carbides, nitrides, and/or intermetallics. A process for forming the electrode material into a spark plug electrode is also provided.
摘要翻译： 用于火花塞和其他点火装置的电极材料。 电极材料是两相复合材料，其包括基体组分和嵌入基质组分中的分散组分。 在优选的实施方案中，基质组分是贵金属基材料，并且分散组分包括表现出高熔点和低功函数的材料，例如碳化物，氮化物和/或金属间化合物。 还提供了一种将电极材料形成火花塞电极的工艺。
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公开(公告)号：US09103313B2
公开(公告)日：2015-08-11
申请号：US13324069
申请日：2011-12-13
CPC分类号： F02P9/007 , F02P23/045 , H01T13/467 , H01T13/50 , H01T21/02 , Y10T29/49231
摘要： A corona ignition system for providing a corona discharge (24) includes an igniter (20) having an electrode (26) with an asymmetrical firing tip (28) relative to an electrode center axis (ae). The firing tip (28) includes a first surface area (A1) facing the fuel injector (42) which is greater than a second surface area (A2) facing a cylinder block (32). The first surface area (A1) presents a projection (60) having a sharp edge, and the second surface area (A2) presents a round outward surface (62). Accordingly, a radio frequency electric field emitted from the first surface area (A1) provides a robust corona discharge (24) in a flammable area at an outside edge (30) of the fuel spray. No electric field is emitted from the second surface area (A2), and no power arcing occurs between the second surface area (A2) and the cylinder block (32).
摘要翻译： 用于提供电晕放电（24）的电晕点火系统包括具有相对于电极中心轴线（ae）具有不对称点火尖端（28）的电极（26）的点火器（20）。 击发尖端（28）包括面向燃料喷射器（42）的第一表面区域（A1），其大于面向气缸体（32）的第二表面区域（A2）。 第一表面区域（A1）具有尖锐边缘的突起（60），第二表面区域（A2）呈圆形的外表面（62）。 因此，从第一表面区域（A1）发射的射频电场在燃料喷雾的外边缘（30）处的易燃区域中提供坚固的电晕放电（24）。 没有电场从第二表面区域（A2）发射，并且在第二表面区域（A2）和气缸体（32）之间不产生电弧。
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公开(公告)号：US09030086B2
公开(公告)日：2015-05-12
申请号：US13829405
申请日：2013-03-14
发明人： Patrick Durham
摘要： An igniter (20) includes an outer insulator (24) formed of an outer ceramic material hermetically sealed to a conductive core (26). The conductive core (26) is formed of a core ceramic material and a conductive component, such as an electrically conductive coating applied to the core ceramic material or metal particles or wires embedded in the core ceramic material. The conductive core (26) is typically sintered and disposed in the green outer insulator (24). The components are then sintered together such that the outer insulator (24) shrinks onto the conductive core (26) and the hermetic seal forms therebetween. The conductive core (26) fills the outer insulator (24), so that the conductive core (26) is disposed at an insulator nose end (34) of the outer insulator (24) and the electrical discharge (22) can be emitted from the conductive core (26), eliminating the need for a separate firing tip.
摘要翻译： 点火器（20）包括由与导电芯（26）气密密封的外陶瓷材料形成的外绝缘体（24）。 导电芯（26）由核心陶瓷材料和导电组分形成，例如施加到核心陶瓷材料上的导电涂层或嵌入芯体陶瓷材料中的金属颗粒或电线。 导电芯（26）通常烧结并设置在绿色外绝缘体（24）中。 然后将这些组件烧结在一起，使得外绝缘体（24）收缩到导电芯（26）上，并且其间形成气密密封。 导电芯（26）填充外绝缘体（24），使得导电芯（26）设置在外绝缘体（24）的绝缘体鼻端（34）处，并且放电（22）可以从 导电芯（26），消除了单独的点火尖端的需要。
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公开(公告)号：US09028289B2
公开(公告)日：2015-05-12
申请号：US13324054
申请日：2011-12-13
申请人： Andrew Stamper , Gordon McIntosh , Raymond Bayer
发明人： Andrew Stamper , Gordon McIntosh , Raymond Bayer
摘要： An industrial spark plug (20) includes a central electrode (24) with a central base (30) formed of a nickel-based material and a central firing tip (32) formed of an iridium-based material. The central firing tip (32) has a tip thickness (tct) of 0.02 to 0.03 inches, a tip diameter (dct) of 0.1184 to 0.1776 inches, and an aspect ratio of 4.736 to 7.104. The central firing tip (32) is electron beam welded to the central base (30) to provide a robust joint therebetween. The central electron beam weld (36) includes a mixture of re-crystallized iridium-based material and re-crystallized nickel-based material extending continuously along and over the entire welding interface. The spark plug (20) also includes a ground electrode (26) with a ground firing tip (38) electron beam welded to a ground base (42).
摘要翻译： 工业火花塞（20）包括具有由镍基材料形成的中心基座（30）和由铱基材料形成的中心点火尖（32）的中心电极（24）。 中心点火尖（32）的尖端厚度（tct）为0.02-0.03英寸，尖端直径（dct）为0.1184至0.1776英寸，纵横比为4.736至7.104。 中心点火头（32）是电子束焊接到中心基座（30）上以在它们之间提供牢固的接头。 中心电子束焊接（36）包括重结晶的铱基材料和在整个焊接界面上连续延伸的再结晶的镍基材料的混合物。 火花塞（20）还包括接地电极（26），其具有焊接到接地基座（42）的电子束的接地点火尖（38）。
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9.发明授权公开(公告)号：US08979606B2
公开(公告)日：2015-03-17
申请号：US13922632
申请日：2013-06-20
发明人： Shuwei Ma
CPC分类号： H01T21/02 , H01T13/39 , Y10T428/12229
摘要： A method of making an electrode material for use in spark plugs and other ignition devices including industrial plugs, aviation igniters, glow plugs, or any other device that is used to ignite an air/fuel mixture in an engine. The electrode material is a ruthenium-based material that includes ruthenium as the single largest constituent. The disclosed method includes hot-forming a layered structure that includes a ruthenium-based material core, an interlayer having a refractory metal disposed over the ruthenium-based material core, and a nickel-based cladding disposed over the interlayer.
摘要翻译： 制造用于火花塞和其它点火装置的电极材料的方法，包括工业塞子，航空点火器，电热塞或用于点燃发动机中的空气/燃料混合物的任何其它装置。 电极材料是包含钌作为单一最大成分的钌基材料。 所公开的方法包括热成型层状结构，其包括钌基材料芯，设置在钌基材料芯上方的具有难熔金属的中间层，以及设置在中间层上的镍基包覆层。
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10.发明授权公开(公告)号：US08901805B2
公开(公告)日：2014-12-02
申请号：US13898898
申请日：2013-05-21
摘要： A spark plug, a center electrode therefore and method of construction is provided. The spark plug has a generally annular ceramic insulator extending between a terminal end and a nose end. A conductive shell surrounds at least a portion of the ceramic insulator and a ground electrode having a ground electrode sparking surface is operatively attached to the shell. An elongate center electrode has a body extending between opposite ends, wherein the body is compacted and sintered of a conductive or semi-conductive ceramic material. One of the electrode ends provides a center electrode sparking surface to provide a spark gap between the center electrode sparking surface and the ground electrode sparking surface.
摘要翻译： 因此提供火花塞，中心电极和结构方法。 火花塞具有在终端和鼻端之间延伸的大致环形的陶瓷绝缘体。 导电壳围绕陶瓷绝缘体的至少一部分，并且具有接地电极火花表面的接地电极可操作地附接到外壳。 细长的中心电极具有在相对端之间延伸的主体，其中主体被压实并且被导电或半导体陶瓷材料烧结。 电极端部之一提供中心电极火花表面，以在中心电极火花表面和接地电极火花表面之间提供火花隙。
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