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1. 发明申请

US20140139098A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20140139098A1
公开(公告)日：2014-05-22
申请号：US14126930
申请日：2012-04-10
申请人： Kohei Katsuraya , Katsutoshi Nakayama
发明人： Kohei Katsuraya , Katsutoshi Nakayama
IPC分类号： H01T13/20
CPC分类号： H01T13/20 , F02P13/00 , H01T13/39
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。

2. 发明申请

US20130214689A1 PLASMA IGNITION DEVICE AND PLASMA IGNITION METHOD 有权
标题翻译：等离子体点火装置和等离子体点火方法
公开(公告)号：US20130214689A1
公开(公告)日：2013-08-22
申请号：US13881391
申请日：2011-08-18
申请人： Kohei Katsuraya , Tatsunori Yamada , Katsutoshi Nakayama
发明人： Kohei Katsuraya , Tatsunori Yamada , Katsutoshi Nakayama
IPC分类号： H01T13/40
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。

3. 发明授权

US08222803B2 Spark plug and manufacturing method thereof 有权
标题翻译：火花塞及其制造方法
公开(公告)号：US08222803B2
公开(公告)日：2012-07-17
申请号：US13123408
申请日：2009-10-09
申请人： Kohei Katsuraya , Katsutoshi Nakayama
发明人： Kohei Katsuraya , Katsutoshi Nakayama
IPC分类号： H01T13/28 , H01T13/20 , H01T21/00 , H01T21/02
CPC分类号： H01T21/02 , H01T13/32
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 press recessed portion 37 extends to a front end surface 31 of the ground electrode 30.
摘要翻译：提供具有接地电极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，并且其中压凹部37延伸到接地电极30。

4. 发明申请

US20120025691A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20120025691A1
公开(公告)日：2012-02-02
申请号：US13143220
申请日：2010-08-23
申请人： Nobuaki Sakayanagi , Katsutoshi Nakayama
发明人： Nobuaki Sakayanagi , Katsutoshi Nakayama
IPC分类号： H01T13/32 , B23K101/00
CPC分类号： H01T13/32 , F02P13/00 , H01T13/20
摘要： Peeling resistance of a noble metal chip is improved by reducing a difference in the thermal stress generated between the noble metal chip and a ground electrode. A spark plug 1 includes an insulator 2, a center electrode 5, a metal shell 3, and a ground electrode 27, wherein a spark discharge gap 33 is formed between the center electrode 5 and the noble metal chip 41 bonded to the ground electrode 27. The ground electrode 27 is provided with a concave hole portion 43, and 70% or more of the noble metal chip 41 is bonded to the hole portion 43 of the ground electrode 27 through a fusion portion 35 formed by fusing the noble metal chip and the ground electrode 27 to each other by emitting a laser beam or the like from the side surface of the noble metal chip. A gap 45 is formed between the noble metal chip 41 and at least a part of an inner wall surface 43 S of the hole portion 43 so as to be more than 0 mm and equal to or less than 1.0 mm in the direction perpendicular to the central axis CL2 of the noble metal chip 41.
摘要翻译：通过减少在贵金属芯片和接地电极之间产生的热应力的差异，可以提高贵金属芯片的剥离性。火花塞1包括绝缘体2，中心电极5，金属壳3和接地电极27，其中在中心电极5和接合到接地电极27的贵金属芯片41之间形成火花放电间隙33 接地电极27设有凹部43，贵金属芯片41的70％以上通过将贵金属芯片熔合而形成的熔融部35与接地电极27的孔部43接合，接地电极27通过从贵金属芯片的侧表面发射激光束等而彼此连接。在贵金属芯片41与孔部43的内壁面43S的至少一部分之间形成间隙45，使其大致为0mm以上且1.0mm以下。贵金属芯片41的中心轴线CL2。

5. 发明申请

US20110193470A1 SPARK PLUG AND MANUFACTURING METHOD THEREOF 有权
标题翻译： SPARK插头及其制造方法
公开(公告)号：US20110193470A1
公开(公告)日：2011-08-11
申请号：US13123408
申请日：2009-10-09
申请人： Kohei Katsuraya , Katsutoshi Nakayama
发明人： Kohei Katsuraya , Katsutoshi Nakayama
IPC分类号： H01T13/20 , H01T21/02
CPC分类号： H01T21/02 , H01T13/32
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 press recessed portion 37 extends to a front end surface 31 of the ground electrode 30.
摘要翻译：提供具有接地电极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，并且其中压凹部37延伸到接地电极30。

6. 发明授权

US07906894B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US07906894B2
公开(公告)日：2011-03-15
申请号：US12336807
申请日：2008-12-17
申请人： Hiroyuki Kameda , Tomoaki Kato , Katsutoshi Nakayama
发明人： Hiroyuki Kameda , Tomoaki Kato , Katsutoshi Nakayama
IPC分类号： H01T13/20
CPC分类号： H01T13/32
摘要： A spark plug includes a ground electrode formed with a flat region and a convex curved region on an outer peripheral surface thereof. The flat region is located on a front end of the ground electrode and has a length of 0.2 mm or more from a front end face of the ground electrode in a longitudinal direction of the ground electrode. The ground electrode satisfies the following dimensional condition (1) with respect to first and second cross sections of the ground electrode taken through the convex curved region and the flat region in directions perpendicular to the longitudinal direction of the ground electrode, 0.950≦(S2/L2)/(S1/L1)≦0.995 (1) where S1 is the area of the first cross section; L1 is the perimeter of the first cross section; S2 is the area of the second cross section; and L2 is the perimeter of the second cross section.
摘要翻译：火花塞包括在其外周面上形成有平坦区域和凸曲面区域的接地电极。平坦区域位于接地电极的前端，并且距离接地电极的前端面在接地电极的长度方向上具有0.2mm以上的长度。接地电极相对于通过凸曲面区域接地的电极的第一和第二截面以及与接地电极的纵向垂直的方向的平坦区域满足以下尺寸条件（1）：0.950＆nlE;（S2 /L2)/(S1/L1)≦̸0.995（1）其中S1是第一个横截面的面积; L1是第一横截面的周长; S2是第二横截面的面积; L2是第二横截面的周长。

7. 发明授权

US07825572B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US07825572B2
公开(公告)日：2010-11-02
申请号：US11851030
申请日：2007-09-06
申请人： Katsutoshi Nakayama , Hiroyuki Kameda
发明人： Katsutoshi Nakayama , Hiroyuki Kameda
IPC分类号： H01T13/20
CPC分类号： H01T13/32 , H01T13/20
摘要： A spark plug including a center electrode; an insulator; and a metal shell, wherein the metal shell includes: a mounting portion; a cylindrical portion; a seal portion; a crimping portion; and a buckled portion all as defined herein, and a relationship A
摘要翻译：一种包括中心电极的火花塞; 绝缘体和金属壳，其中所述金属壳包括：安装部分; 圆筒部; 密封部; 压接部分以及全部如本文所定义的弯曲部分，并且满足关系A

8. 发明申请

US20100109502A1 SPARK PLUG MANUFACTURING METHOD, AND SPARK PLUG 有权
标题翻译： SPARK PLUG制造方法和SPARK PLUG
公开(公告)号：US20100109502A1
公开(公告)日：2010-05-06
申请号：US12532850
申请日：2008-03-27
申请人： Katsutoshi Nakayama , Satoshi Nagasawa
发明人： Katsutoshi Nakayama , Satoshi Nagasawa
IPC分类号： H01T13/20 , H01T21/02
CPC分类号： H01T21/02 , H01T13/32
摘要： There is provided according to the present invention a manufacturing method of a spark plug that includes a cylindrical metal shell, a cylindrical ceramic insulator retained in the metal shell, a center electrode retained in the ceramic insulator and extending in an axial direction and a ground electrode having a rear end portion fixed to the metal shell and a front end portion formed with a protruding region facing a front end portion of the center electrode with a gap left therebetween and being of substantially uniform thickness except for an area where the protrusion is formed. The spark plug manufacturing method includes a press forming step for pressing the whole of a ground electrode material for constituting the ground electrode, so as to form a protruding region on a front end portion of the ground electrode material and a welding step for, after the press forming step, welding a rear end portion of the ground electrode material to the metal shell.
摘要翻译：根据本发明，提供了一种火花塞的制造方法，该火花塞包括圆筒形金属壳，保持在金属壳中的圆柱形陶瓷绝缘体，保持在陶瓷绝缘体中并沿轴向延伸的中心电极和接地电极具有固定到所述金属壳体的后端部分，以及形成有与所述中心电极的前端部分相对的突出区域的前端部分，其间具有间隙，并且除了形成所述突起的区域之外，其厚度基本均匀。火花塞的制造方法包括：压制成形工序，用于按压用于构成接地电极的接地电极材料的整体，以在接地电极材料的前端部分上形成突出区域;以及焊接步骤，冲压成形步骤，将接地电极材料的后端部焊接到金属壳。

9. 发明授权

US07703428B2 Spark plug and internal combustion engine in which the spark plug is disposed 有权
标题翻译：配有火花塞的火花塞和内燃机
公开(公告)号：US07703428B2
公开(公告)日：2010-04-27
申请号：US12207616
申请日：2008-09-10
申请人： Katsutoshi Nakayama , Hiroyuki Kameda
发明人： Katsutoshi Nakayama , Hiroyuki Kameda
IPC分类号： H01T13/02 , H01T13/00 , H01T13/20
CPC分类号： H01T13/16 , H01T21/02
摘要： To provide a spark plug with improved heat resistance and an internal combustion engine in which that spark plug is mounted where there is good conduction of the heat near the opening on the combustion chamber side of the mounting hole for the spark plug provided in the engine and the effects of thermal stress occurring near that opening are mitigated. A cylindrical part without threads formed thereon is provided on the leading end side of a metal housing of a spark plug and the thermal stress applied to a mounting hole is mitigated by avoiding close contact with the mounting hole of an engine head. Furthermore, the spark plug has a mounting structure in which the leading end surface of the cylindrical part is disposed 1.55 mm or more to the base end side in a mounting hole in the direction of the axial line O with respect to the wall surface inside the combustion chamber. By this means, the metal housing does not easily take up the heat that accompanies combustion of the air-fuel mixture inside the combustion chamber at the cylindrical, part so there may be good heat conduction.
摘要翻译：提供具有改善的耐热性的火花塞和内燃机，其中该火花塞安装在设置在发动机内的用于火花塞的安装孔的燃烧室侧的开口附近有良好的热传导，在该开口附近发生的热应力的影响得到缓解。在火花塞的金属壳体的前端侧设置有没有螺纹的圆筒形部件，并且通过避免与发动机头部的安装孔的紧密接触来减轻施加于安装孔的热应力。此外，火花塞具有安装结构，其中，圆柱形部分的前端表面相对于轴线O的方向上的壁表面在轴线O的方向上的安装孔中的基端侧布置1.55mm以上燃烧室。通过这种方式，金属外壳不容易吸收燃烧室内的空气燃料混合物在圆柱形部分燃烧的热量，所以可能有良好的热传导。

10. 发明申请

US20090140624A1 SPARK PLUG INTERNAL COMBUSTION ENGINE AND METHOD FOR PRODUCING THE SPARK PLUG 有权
标题翻译：火花塞内燃机和生产火花塞的方法
公开(公告)号：US20090140624A1
公开(公告)日：2009-06-04
申请号：US12274828
申请日：2008-11-20
申请人： Hiroyuki Kameda , Katsutoshi Nakayama , Satoshi Nagasawa
发明人： Hiroyuki Kameda , Katsutoshi Nakayama , Satoshi Nagasawa
IPC分类号： H01T13/08 , H01T21/02
CPC分类号： H01T21/02 , H01T13/32
摘要： A spark plug including: a center electrode; a substantially cylindrical insulator; a cylindrical metal shell; a ground electrode having a base end joined to a leading end portion of the metal shell and a distal end bent toward the axis line. The ground electrode includes: a thick portion provided on a base end side, a thin portion provided on a distal end side, and a stepped portion provided on an inner peripheral surface between the thick portion and the thin portion. A noble metal tip is joined to and partially embedded in the inner peripheral surface of the thin portion and disposed to form a gap between the noble metal tip and the leading end portion of the center electrode.
摘要翻译：一种火花塞，包括：中心电极; 一个基本上圆柱形的绝缘体; 圆柱形金属外壳; 接地电极，其具有接合到所述金属壳的前端部的基端和朝向所述轴线弯曲的远端。接地电极包括：设置在基端侧的厚壁部，设置在前端侧的薄壁部和设置在厚壁部与薄壁部之间的内周面的台阶部。贵金属端头接合并部分地嵌入薄壁的内周面，并且设置成在贵金属端头和中心电极的前端部之间形成间隙。

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