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公开(公告)号：US20070228916A1
公开(公告)日：2007-10-04
申请号：US11730172
申请日：2007-03-29
IPC分类号： H01T13/20
CPC分类号： H01T13/467 , H01T13/32 , H01T13/39 , H01T13/52
摘要： A spark plug including: a cylindrical insulator having an axial hole extending through the insulator in an axial direction; a center electrode inserted in the axial hole; a metal shell provided around an outer periphery of the insulator and having a leading end surface, from which a leading end surface of the insulator protrudes; a ground electrode having a base end bonded to the leading end surface of the metal shell; and a noble metal tip disposed on a distal end of the ground electrode, an end of the noble metal tip protruding toward the center electrode in a radial direction, wherein: the spark plug forming a spark discharge path upon application of a discharging voltage between the protruding end of the noble metal tip and an end of the center electrode, the spark discharge path including an aerial discharge gap between a part of the protruding end of the noble metal tip and a part of the end of the insulator and a surface-creeping discharge path beginning at a part of the end of the insulator and a part of the center electrode and extending along the end surface of the insulator; and the noble metal tip protruding from the leading end of the ground electrode by a protruding length of more than 0.2 mm.
摘要翻译： 一种火花塞，包括：具有沿轴向延伸穿过绝缘体的轴向孔的圆柱形绝缘体; 插入所述轴向孔中的中心电极; 金属壳体，设置在所述绝缘体的外周的周围，并具有前端面，所述绝缘子的前端表面从所述前端表面突出; 接地电极，其具有接合到所述金属壳的前端表面的基端; 以及设置在所述接地电极的前端的贵金属电极头，所述贵金属电极头端部沿着径向突出于所述中心电极，其特征在于，所述火花塞在形成所述火花放电路径之间， 贵金属端头的突出端和中心电极的端部，火花放电路径包括在贵金属电极头的突出端的一部分和绝缘子的端部的一部分之间的空气放电间隙，以及表面爬行 从所述绝缘体的端部的一部分开始的放电路径和所述中心电极的一部分并且沿着所述绝缘体的端面延伸; 所述贵金属电极头从所述接地电极的前端突出大于0.2mm的突出长度。
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公开(公告)号：US07663296B2
公开(公告)日：2010-02-16
申请号：US11730172
申请日：2007-03-29
IPC分类号： H01T13/20
CPC分类号： H01T13/467 , H01T13/32 , H01T13/39 , H01T13/52
摘要： A spark plug including: a cylindrical insulator having an axial hole extending through the insulator in an axial direction; a center electrode inserted in the axial hole; a metal shell provided around an outer periphery of the insulator and having a leading end surface, from which a leading end surface of the insulator protrudes; a ground electrode having a base end bonded to the leading end surface of the metal shell; and a noble metal tip disposed on a distal end of the ground electrode, an end of the noble metal tip protruding toward the center electrode in a radial direction, wherein: the spark plug forming a spark discharge path upon application of a discharging voltage between the protruding end of the noble metal tip and an end of the center electrode, the spark discharge path including an aerial discharge gap between a part of the protruding end of the noble metal tip and a part of the end of the insulator and a surface-creeping discharge path beginning at a part of the end of the insulator and a part of the center electrode and extending along the end surface of the insulator; and the noble metal tip protruding from the leading end of the ground electrode by a protruding length of more than 0.2 mm.
摘要翻译： 一种火花塞，包括：圆柱形绝缘体，具有沿轴向延伸穿过绝缘体的轴向孔; 插入所述轴向孔中的中心电极; 金属壳体，设置在所述绝缘体的外周的周围，并具有前端面，所述绝缘子的前端表面从所述前端表面突出; 接地电极，其具有接合到所述金属壳的前端表面的基端; 以及设置在所述接地电极的前端的贵金属电极头，所述贵金属电极头端部沿着径向突出于所述中心电极，其特征在于，所述火花塞在形成所述火花放电路径之间， 贵金属端头的突出端和中心电极的端部，火花放电路径包括在贵金属电极头的突出端的一部分和绝缘子的端部的一部分之间的空气放电间隙，以及表面爬行 从所述绝缘体的端部的一部分开始的放电路径和所述中心电极的一部分并且沿着所述绝缘体的端面延伸; 所述贵金属电极头从所述接地电极的前端突出大于0.2mm的突出长度。
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公开(公告)号：US5680002A
公开(公告)日：1997-10-21
申请号：US592693
申请日：1996-01-26
申请人： Iwao Kunitomo , Yoshihiro Matsubara , Kozo Amano
发明人： Iwao Kunitomo , Yoshihiro Matsubara , Kozo Amano
CPC分类号： H01T13/467
摘要： In a multi-polarity type spark plug for an internal combustion engine, a tubular insulator is supported within a cylindrical metallic shell through which a spark plug is to be attached to an internal combustion engine. A center electrode is placed within the insulator, a front end of the center electrode being directed toward a combustion chamber of the internal combustion engine from a front end of the metallic shell so as to extend beyond a front end of the insulator. First and second ground electrodes are each connected to the front end of the metallic shell, the first ground electrode forming a first vertical spark gap with a front end surface of the center electrode which directly opposes an elevational side of the center electrode, and the second ground electrode forming a second horizontal spark gap with an elevational side of the center electrode. An angle .theta.a is limited as 60.degree..ltoreq..theta.a .ltoreq.150.degree. in which the angle .theta.a is taken when the first ground electrode forms against the second ground electrode with the center electrode as an axial center.
摘要翻译： 在用于内燃机的多极型火花塞中，管状绝缘体被支撑在圆筒形的金属外壳内，火花塞将通过该外壳连接到内燃机。 中心电极放置在绝缘体内，中心电极的前端从金属壳的前端引导到内燃机的燃烧室，以便延伸超过绝缘体的前端。 第一接地电极和第二接地电极各自连接到金属壳体的前端，第一接地电极形成第一垂直火花隙，其中心电极的前端表面与中心电极的正面相对，第二接地电极 接地电极与中心电极的正面形成第二水平火花间隙。 角度θ被限制为60°θ<150°，其中当第一接地电极与中心电极作为轴向中心与第二接地电极形成时，取得角度θa。
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公开(公告)号：US5831377A
公开(公告)日：1998-11-03
申请号：US800019
申请日：1997-02-13
CPC分类号： H01T13/20
摘要： In a spark plug including a cylindrical metal shell whose inner wall has a ledge portion, an insulator having a seat portion which engages with a rear slope surface of the ledge portion to be supported within the metal shell, a center electrode supported with an axial bore of the insulator, and a ground electrode extended from the metal shell to form a spark gap with the center electrode. A dimensional relationship among (A), (B) and (g) is defined as follows: {(B-A)/2}.gtoreq.0.8.times.(g) or {(B-A)/2}.gtoreq.0.9.times.(g). Where B (mm) is an inner diameter of a metal shell portion which surrounds an insulator nose, A (mm) is a base diameter of the insulator nose, and g (mm) is a width dimension of the spark gap.
摘要翻译： 在包括其内壁具有凸缘部分的圆柱形金属壳的火花塞中，具有与所述凸缘部的后倾斜表面接合以支撑在所述金属壳内的座部的绝缘体，支撑在所述金属壳内的中心电极， 的绝缘体，以及从金属壳延伸的接地电极，与中心电极形成火花隙。 （A），（B）和（g）之间的尺寸关系定义如下：{（BA）/ 2}> / = 0.8x（g）或{（BA）/ 2}> / = 0.9x ）。 其中B（mm）是围绕绝缘体鼻部的金属壳部分的内径，A（mm）是绝缘子鼻的基部直径，g（mm）是火花隙的宽度尺寸。
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5.发明授权Spark plug having ground electrode including precious metal alloy portion containing first, second and third components 有权具有接地电极的火花塞包括含有第一，第二和第三组分的贵金属合金部分公开(公告)号：US07288879B2
公开(公告)日：2007-10-30
申请号：US10951788
申请日：2004-09-29
摘要： A spark plug including: a cylindrical metal shell; a cylindrical insulator fixed to the metal shell; a center electrode having its leading end protruding from a leading end of the insulator and its trailing end fixed to the insulator; and a ground electrode having one end fixed to the metal shell and forming a discharge gap between the ground electrode and the center electrode. The ground electrode includes a precious metal alloy portion containing: 50 weight % or more of a first component of one of Rh and Pt; less than 50 weight % of a second component of the other of Rh and Pt; and optionally a third component containing at least one of: Ni in an amount of less than 7 weight %; and Zr in an amount of less than 2 weight % the content of the third component being less than that of the second component.
摘要翻译： 一种火花塞，包括：圆柱形金属壳; 固定在金属外壳上的圆柱形绝缘体; 中心电极的前端从绝缘体的前端突出，其后端固定在绝缘体上; 以及接地电极，其一端固定在金属壳上，并在接地电极和中心电极之间形成放电间隙。 接地电极包括含有50重量％以上的Rh和Pt中的一个的第一成分的贵金属合金部分; Rh和Pt中另一个的第二成分的重量比小于50重量％ 和任选的含有少于7重量％的Ni中的至少一种的第三组分; 和Zr的量小于2重量％，第三组分的含量小于第二组分的含量。
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公开(公告)号：US07279827B2
公开(公告)日：2007-10-09
申请号：US10519075
申请日：2004-03-22
IPC分类号： H01T13/20
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. At least one of the center electrode and the side electrode includes a precious metal member facing a spark discharge gap between the electrodes. A sweating phenomenon of the precious metal member can be suppressed while spark abrasion, oxidation abrasion and abnormal abrasion of the precious metal member are suppressed. The precious metal member contains Ir as a main component, and smaller amounts of Rh, Ru, and Ni.
摘要翻译： 本发明的目的是提供一种设置有中心电极和侧面电极的耐久性更高的火花塞。 中心电极和侧面电极中的至少一个包括面对电极之间的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，同时抑制贵金属构件的火花磨损，氧化磨损和异常磨损。 贵金属构件含有Ir作为主要成分，较少量的Rh，Ru，Ni。
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公开(公告)号：US20060043856A1
公开(公告)日：2006-03-02
申请号：US10951788
申请日：2004-09-29
IPC分类号： H01T13/20
摘要： A spark plug including: a cylindrical metal shell; a cylindrical insulator fixed to the metal shell; a center electrode having its leading end protruding from a leading end of the insulator and its trailing end fixed to the insulator, and a ground electrode having one end fixed to the metal shell and forming a discharge gap between the ground electrode and the center electrode. The ground electrode includes a precious metal alloy portion containing: 50 weight % or more of a first component of one of Rh and Pt; less than 50 weight % of a second component of the other of Rh and Pt; and optionally a third component containing at least one of: Ni in an amount of less than 7 weight %; and Zr in an amount of less than 2 weight % the content of the third component being less than that of the second component.
摘要翻译： 一种火花塞，包括：圆柱形金属壳; 固定在金属外壳上的圆柱形绝缘体; 中心电极的前端从绝缘体的前端突出，其后端固定在绝缘体上，接地电极的一端固定在金属外壳上，在接地电极和中心电极之间形成放电间隙。 接地电极包括含有50重量％以上的Rh和Pt中的一个的第一成分的贵金属合金部分; Rh和Pt中另一个的第二成分的重量比小于50重量％ 和任选的含有少于7重量％的Ni中的至少一种的第三组分; 和Zr的量小于2重量％，第三组分的含量小于第二组分的含量。
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公开(公告)号：US06724133B2
公开(公告)日：2004-04-20
申请号：US09953173
申请日：2001-09-17
申请人： Naomichi Miyashita , Yoshihiro Matsubara , Wataru Matsutani , Masayuki Segawa , Hiroaki Kuki , Mamoru Musasa
发明人： Naomichi Miyashita , Yoshihiro Matsubara , Wataru Matsutani , Masayuki Segawa , Hiroaki Kuki , Mamoru Musasa
IPC分类号： H01T1320
摘要： A spark plug having a center electrode 2 formed from an electrode base material 2n, which is made of an Ni alloy containing an alloy component (e.g., Cr) capable of forming an oxide semiconductor having a resistivity of negative temperature coefficient. Thus, a corrosion suppression layer originating from the components of the electrode base material is formed on the surface of a tip end portion of the insulator 3, so that corrosion (channeling) of the surface of the tip end portion of the insulator 3 due to creeping spark discharge can be effectively suppressed. In addition, when the constituent metal of the electrode base material 2n has a coefficient of thermal conductivity of 17 to 30 W/m·K, the heat transfer performance of the electrode is enhanced, so that durability against electrode consumption can be greatly improved.
摘要翻译： 一种火花塞，其具有由电极母材2n形成的中心电极2，该电极基体材料由含有能够形成具有负温度系数的电阻率的氧化物半导体的合金成分（例如Cr）的Ni合金制成。 因此，在绝缘体3的前端部的表面上形成起因于电极基体的部件的腐蚀抑制层，由此导致绝缘子3的前端部的表面的腐蚀（沟通） 可以有效地抑制蠕动火花放电。 此外，当电极母材2n的构成金属的导热系数为17〜30W / m·K时，电极的传热性能提高，能够极大地提高耐电极消耗的耐久性。
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9.发明授权Lateral electrode type spark plug with geometrical relationships with ground electrode 失效具有与接地电极几何关系的侧面电极型火花塞
公开(公告)号：US6091185A
公开(公告)日：2000-07-18
申请号：US58781
申请日：1998-04-13
摘要： In a spark plug, a cylindrical metal shell (1) is provided whose inner wall has a rear section and a front section to respectively serve as a diameter-increased section and a diameter-decreased section with a seat portion (1) as a boundary therebetween. An insulator (2) is fixedly placed within the metal shell (1) so that a front end surface (21) of the insulator (2) extends beyond a front end surface (12) of the metal shell (1) with a shoulder portion (231) of an insulator nose (23) engaged against the seat portion (11) of the metal shell (1) by way of a packing (10). A center electrode (3) is fixedly placed within an axial bore (22) of the insulator (2), A ground electrode (4) is connected to the front end surface (12) of the metal shell (1), and bent so that a front end surface (41) of the ground electrode (4) opposes an outer surface (311) of the center electrode (3). The outer surface (311) and a front end surface (31) of the center electrode (3) are provided to respectively serve as a firing portion so as to form a spark discharge gap (Go) with the front end surface (41) of the ground electrode (4), the front end surface (41) of the ground electrode (4) forming an air gap (G) with an outer surface (25) of the insulator (2) so as to release creeping spark discharges along a front end surface (21) of the insulator (2).
摘要翻译： 在火花塞中，设置有圆筒形的金属壳（1），其内壁具有后部和前部，分别用作直径增加部分和具有座部（1）作为边界的直径减小部分 之间。 绝缘体（2）被固定地放置在金属壳体（1）内，使得绝缘体（2）的前端表面（21）延伸超出金属壳体（1）的前端表面（12），肩部 （231）通过密封（10）与金属壳（1）的座部（11）接合的绝缘体鼻（23）。 中心电极（3）固定地放置在绝缘体（2）的轴向孔（22）内，接地电极（4）连接到金属外壳（1）的前端表面（12） 接地电极（4）的前端面（41）与中心电极（3）的外表面（311）相对。 设置中心电极（3）的外表面（311）和前端表面（31）以分别用作点火部分，以便与前端表面（41）形成火花放电间隙（Go） 所述接地电极（4），所述接地电极（4）的前端面（41）与所述绝缘体（2）的外表面（25）形成气隙（G），以沿着所述接地电极 绝缘体（2）的前端面（21）。
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10.发明授权Sparkplug voltage probe for use with an internal combustion engine by clamping sparkplug cables with an insulation base 失效用于内燃机的火花塞电压探头，通过夹住具有绝缘基座的火花塞电缆
公开(公告)号：US5543716A
公开(公告)日：1996-08-06
申请号：US262654
申请日：1994-06-20
CPC分类号： G01R15/16 , F02P17/12 , G01R31/007 , F02P2017/006 , F02P2017/123
摘要： In a sparkplug voltage probe device in use for an internal combustion engine, an insulator base is attached to the internal combustion engine, an upper surface of the insulator base having a plurality of grooves in which the sparkplug cables are placed. An insulator sheet is embedded in the insulator base. An electrode layer is provided on an upper surface of the insulator base along the grooves to form a static capacity between the electrode layer and the sparkplug cables when the voltage is applied across the spark plugs. On a lower surface of the insulator sheet an electrical shield layer is provided connected to the internal combustion engine by a ground wire. A lead wire electrically connects the electrode plate to a microcomputer so as to analyze the engine burning condition based on the static capacity between the electrode plate and the sparkplug cables.
摘要翻译： 在用于内燃机的火花塞电压探针装置中，绝缘体基座安装在内燃机上，绝缘体基座的上表面具有放置火花塞电缆的多个凹槽。 绝缘体片嵌入绝缘体基座中。 当绝缘体基底的上表面沿沟槽设置时，当跨越火花塞施加电压时，在电极层和火花塞电缆之间形成静电容。 在绝缘片的下表面上，通过接地线连接到内燃机的电屏蔽层。 引线将电极板电连接到微计算机，以基于电极板和火花塞电缆之间的静态容量分析发动机燃烧状况。
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