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1. 发明授权

US08120235B2 Spark plug for internal combustion engine and method for manufacturing spark plug 有权
标题翻译：用于内燃机的火花塞和用于制造火花塞的方法
公开(公告)号：US08120235B2
公开(公告)日：2012-02-21
申请号：US12741901
申请日：2008-11-20
申请人： Kenji Nunome , Hiroaki Kuki , Hiroyuki Kameda , Kazumasa Yoshida
发明人： Kenji Nunome , Hiroaki Kuki , Hiroyuki Kameda , Kazumasa Yoshida
IPC分类号： H01T13/00
CPC分类号： H01T13/39 , H01T21/02
摘要： A spark plug including a center electrode and a ground electrode. A center electrode noble metal tip is joined to a leading end portion of a center electrode, and a ground electrode noble metal tip is joined to a center-electrode-side side surface of the ground electrode. A distal end portion of the ground electrode noble metal tip protrudes from a distal-end surface of the ground electrode by 0.1 mm to 1.5 mm. A center-electrode-side side surface of the ground electrode noble metal tip projects from a center-electrode-side side surface by 0.15 mm to 0.6 mm. The ground electrode includes chamfered portions. Thickness lengths and widthwise lengths of the respective chamfered portions achieved within a cross section perpendicular to a center axis of the ground electrode are set to 0.2 mm or more.
摘要翻译：一种包括中心电极和接地电极的火花塞。中心电极用贵金属电极头接合于中心电极的前端部，接地电极用贵金属电极头接合于接地电极的中心电极侧面。接地电极用贵金属电极头的前端部从接地电极的前端面突出0.1mm〜1.5mm。接地电极用贵金属电极头的中心电极侧面从中心电极侧面突出0.15mm〜0.6mm。接地电极包括倒角部分。在与接地电极的中心轴垂直的截面内实现的各个倒角部的厚度长度和宽度方向的长度设定为0.2mm以上。

2. 发明申请

US20100264803A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR MANUFACTURING SPARK PLUG 有权
标题翻译：用于内燃机的火花塞和制造火花塞的方法
公开(公告)号：US20100264803A1
公开(公告)日：2010-10-21
申请号：US12741901
申请日：2008-11-20
申请人： Kenji Nunome , Hiroaki Kuki , Hiroyuki Kameda , Kazumasa Yoshida
发明人： Kenji Nunome , Hiroaki Kuki , Hiroyuki Kameda , Kazumasa Yoshida
IPC分类号： H01T13/20 , H01T21/02
CPC分类号： H01T13/39 , H01T21/02
摘要： A spark plug including a center electrode and a ground electrode. A center electrode noble metal tip is joined to a leading end portion of a center electrode, and a ground electrode noble metal tip is joined to a center-electrode-side side surface of the ground electrode. A distal end portion of the ground electrode noble metal tip protrudes from a distal-end surface of the ground electrode by 0.1 mm to 1.5 mm. A center-electrode-side side surface of the ground electrode noble metal tip projects from a center-electrode-side side surface by 0.15 mm to 0.6 mm. The ground electrode includes chamfered portions. Thickness lengths and widthwise lengths of the respective chamfered portions achieved within a cross section perpendicular to a center axis of the ground electrode are set to 0.2 mm or more.
摘要翻译：一种包括中心电极和接地电极的火花塞。中心电极用贵金属电极头接合于中心电极的前端部，接地电极用贵金属电极头接合于接地电极的中心电极侧面。接地电极用贵金属电极头的前端部从接地电极的前端面突出0.1mm〜1.5mm。接地电极用贵金属电极头的中心电极侧面从中心电极侧面突出0.15mm〜0.6mm。接地电极包括倒角部分。在与接地电极的中心轴垂直的截面内实现的各个倒角部的厚度长度和宽度方向的长度设定为0.2mm以上。

3. 发明授权

US08188642B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US08188642B2
公开(公告)日：2012-05-29
申请号：US12452696
申请日：2008-07-29
申请人： Kenji Ishida , Hiroaki Kuki , Yuichi Yamada
发明人： Kenji Ishida , Hiroaki Kuki , Yuichi Yamada
IPC分类号： H01T13/02 , H01T13/20
CPC分类号： H01T13/20 , H01T13/39
摘要： A spark plug 1 includes an insulator 2, a metal shell 3, a center electrode 5 and a ground electrode 27. A spark discharge gap 33 is formed between a front end portion 28 of the center electrode 5 and the ground electrode 27. The metal shell 3 has a through hole 29 therein and a metal convex portion 21 inwardly radially projecting in the through hole 29. The metal convex portion 21 includes a convex rearward face 30, a convex inner circumferential face 31 and a convex forward face 32. The through hole 29 has an inner diameter A (mm) at a front end side inner circumferential face 40, which is located at the front end side with respect to the convex forward face 32. The insulator 2 is inserted in the through hole 29 and has a first insulator taper portion 14, a second insulator taper portion 36 and a base 37 between the taper portions. The present invention satisfies the following representations: G≦(A−B)/2; A≧7.3; and 2≦XX≦4, where “B” (mm) is an outer diameter of a border K between an insulator front end portion 38 and the second insulator taper portion 36, where “G” (mm) is a distance of a spark discharge gap 33, and where “XX” (mm) is a length from a very-end portion FF of the convex inner circumferential face 31 to the border K in the axial C1 direction.
摘要翻译：火花塞1包括绝缘体2，金属壳3，中心电极5和接地电极27.在中心电极5的前端部分28和接地电极27之间形成火花放电间隙33.金属壳体3具有通孔29和在通孔29中向内径向突出的金属凸部21.金属凸部21包括凸形后表面30，凸形内圆周面31和凸形前表面32。孔29的前端侧内周面40的内径A（mm）位于相对于凸形前面32的前端侧。绝缘体2插入通孔29中，具有第一绝缘体锥形部分14，第二绝缘体锥形部分36和在锥形部分之间的基部37。本发明满足以下表示：G＆nlE;（A-B）/ 2; A≥7.3; 和2＆nlE; XX＆nlE; 4，其中“B”（mm）是绝缘体前端部分38和第二绝缘体锥形部分36之间的边界K的外径，其中“G”（mm）是火花的距离放电间隙33，其中“XX”（mm）是从凸内周面31的极端部FF到轴向C1方向的边界K的长度。

4. 发明申请

US20110273074A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE 有权
标题翻译：火花塞用于内燃机
公开(公告)号：US20110273074A1
公开(公告)日：2011-11-10
申请号：US13138198
申请日：2010-01-21
申请人： Yuichi Yamada , Hiroaki Kuki , Ryuma Kawachi
发明人： Yuichi Yamada , Hiroaki Kuki , Ryuma Kawachi
IPC分类号： H01T13/04
CPC分类号： H01T13/08
摘要： A spark plug for an internal combustion engine capable of ensuring sufficient gastightness of a combustion chamber and meeting demand for a reduction in diameter.
摘要翻译：一种用于内燃机的火花塞，其能够确保燃烧室的足够的气密性并满足减小直径的需求。

5. 发明授权

US06724133B2 Spark plug with nickel alloy electrode base material 失效
标题翻译：火花塞采用镍合金电极基材
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
CPC分类号： H01T13/52 , H01T13/39
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。

6. 发明授权

US08384277B2 Spark plug with an identifier 有权
标题翻译：带有标识符的火花塞
公开(公告)号：US08384277B2
公开(公告)日：2013-02-26
申请号：US12974658
申请日：2010-12-21
申请人： Yuichi Yamada , Hiroaki Kuki , Takashi Sano
发明人： Yuichi Yamada , Hiroaki Kuki , Takashi Sano
IPC分类号： F02M57/06 , H01T13/20
CPC分类号： H01T13/02
摘要： A spark plug includes an insulator having an axial hole extending in the direction of an axis, and a terminal electrode disposed at a rear end portion of the axial hole. An identifier bearing externally visible identification information is joined to the rear end surface of the terminal electrode. The identifier has a thickness of 0.03 mm or greater along the direction of the axis.
摘要翻译：火花塞包括具有沿轴线方向延伸的轴向孔的绝缘体和设置在轴向孔的后端部的端子电极。将具有外部可见识别信息的标识符连接到端子电极的后端表面。标识符沿着轴的方向具有0.03mm或更大的厚度。

7. 发明申请

US20130015756A1 SPARK PLUG 有权
标题翻译： SPARK插头
公开(公告)号：US20130015756A1
公开(公告)日：2013-01-17
申请号：US13638703
申请日：2011-03-28
申请人： Yuichi Yamada , Hiroaki Kuki , Naomichi Miyashita , Jiro Kyuno
发明人： Yuichi Yamada , Hiroaki Kuki , Naomichi Miyashita , Jiro Kyuno
IPC分类号： H01T13/20
CPC分类号： H01T13/36
摘要： A spark plug having an insulator with improved breakage resistance. The spark plug has a cross-section that satisfies the following relationship: 0.6 mm
摘要翻译：具有绝缘体的火花塞具有改善的耐断裂性。火花塞具有满足以下关系的截面：0.6mm <= L，其中A表示绝缘体的支撑部分与形成在前端侧的绝缘体主体部分之间的连接点相对于支撑部分其中B表示在支撑部分和填料彼此接触的接触部分的最内部位置（a）的位置之间更靠近外周侧的位置，以及（b）支撑部分和平行于火花塞的轴线并从金属壳的阶梯部分的最内圆周端延伸的虚拟直线，其中L表示从点A到点B的路径的长度绝缘体。

8. 发明授权

US07528534B2 Spark plug 有权
标题翻译：火花塞
公开(公告)号：US07528534B2
公开(公告)日：2009-05-05
申请号：US10583252
申请日：2004-12-15
申请人： Hiroaki Kuki , Akira Suzuki , Yoshihiro Matsubara , Kazuhiko Mori
发明人： Hiroaki Kuki , Akira Suzuki , Yoshihiro Matsubara , Kazuhiko Mori
IPC分类号： H01T13/20
CPC分类号： H01T13/36 , H01T13/16
摘要： There is provided a spark plug wherein an insulator and a metallic shell, when observed in a section made by a plane including an axis of a spark plug, have therebetween a gap of less than 0.45 mm at a more front end side than an engagement position of a packing and a first insulator stepped portion, and the gap is provided axially from a most front end side engagement position of the packing and a first insulator stepped portion as a starting point to a finishing point that is apart from the starting point by 1.2 mm or more toward the front end side while being apart from a front end surface of the metallic shell by 7.9 mm or more toward a rear end side.
摘要翻译：提供了一种火花塞，其中当在由包括火花塞的轴线的平面制成的部分中观察时，绝缘体和金属壳在其前端侧的接合位置之间具有小于0.45mm的间隙并且所述间隙从所述衬垫的最前端侧接合位置轴向设置，所述间隙作为起始点设置在与所述起始点相距1.2的终点处的第一绝缘体台阶部 mm以上朝向前端侧，同时从后端侧朝向金属壳的前端面离开7.9mm以上。

9. 发明授权

US06759795B2 Spark plug 失效
标题翻译：火花塞
公开(公告)号：US06759795B2
公开(公告)日：2004-07-06
申请号：US10372800
申请日：2003-02-26
申请人： Kenichi Kumagai , Makoto Yamaguchi , Hiroaki Kuki
发明人： Kenichi Kumagai , Makoto Yamaguchi , Hiroaki Kuki
IPC分类号： H01T1320
CPC分类号： H01T13/39 , H01T13/32
摘要： A spark plug having a tubular metallic shell (1), an insulator (2) fitted into the metallic shell (1), a center electrode (3) provided in the insulator (2), and a ground electrode (4), one end of the ground electrode (4) being joined to the metallic shell (1) by means of welding or a like process, and a spark discharge gap (g) being formed between the other end portion of the ground electrode (4) and the center electrode (3), the spark plug being further characterized in that: the ground electrode (4) has an electrode base metal (4a), a Cu-based heat transfer acceleration element (4c) embedded in the electrode base metal (4a) and formed predominantly from Cu, and a noble metal chip (32) welded to the electrode base metal (4a) at a position facing the spark discharge gap (g); and the electrode base metal (4a) is an Ni alloy containing Cr in an amount of 14%-17% by mass, Mo in an amount of 0.8%-3.5% by mass, and Ni in an amount of 68%-85.2% by mass. In a second embodiment, the ground electrode (4) has a diffusion layer formed in a boundary between the electrode base metal (4a) and the Cu-based heat transfer acceleration element (4c), and the electrode base metal (4a) contains C in an amount not greater than 0.3% by mass.
摘要翻译：一种火花塞，其具有管状金属壳（1），安装在金属壳（1）中的绝缘体（2），设置在绝缘体（2）中的中心电极（3）和接地电极（4），一端的接地电极（4）通过焊接或类似工艺接合到金属壳（1），并且在接地电极（4）的另一端部和中心部之间形成火花放电间隙（g）电极（3），其特征在于，所述接地电极（4）具有电极基体金属（4a），嵌入所述电极基体金属（4a）中的Cu系传热加速元件（4c）主要由Cu形成，以及在面向火花放电间隙（g）的位置处焊接到电极母材（4a）的贵金属芯片（32）。电极母材（4a）为含有14质量％〜17质量％的Cr，0.8〜3.5质量％的Mo，68％〜85.2质量％的Ni的Ni合金，的质量。在第二实施例中，接地电极（4）具有形成在电极基体金属（4a）和Cu系传热加速元件（4c）之间的边界的扩散层，电极基体金属（4a）含有C 的量不大于0.3质量％。

10. 发明授权

US08970097B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US08970097B2
公开(公告)日：2015-03-03
申请号：US13138198
申请日：2010-01-21
申请人： Yuichi Yamada , Hiroaki Kuki , Ryuma Kawachi
发明人： Yuichi Yamada , Hiroaki Kuki , Ryuma Kawachi
IPC分类号： H01T13/04 , H01T13/08
CPC分类号： H01T13/08
摘要： A spark plug for an internal combustion engine capable of ensuring sufficient gastightness of a combustion chamber and meeting demand for a reduction in diameter.
摘要翻译：一种用于内燃机的火花塞，其能够确保燃烧室的足够的气密性并满足减小直径的需求。

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