公开(公告)号：US06864622B2

公开(公告)日：2005-03-08

申请号：US10297201

申请日：2002-03-27

申请人： Wataru Matsutani ,  Masayuki Segawa ,  Satoko Ito ,  Osamu Yoshimoto

发明人： Wataru Matsutani ,  Masayuki Segawa ,  Satoko Ito ,  Osamu Yoshimoto

IPC分类号： H01T13/39 ,  H01T13/20

CPC分类号： H01T13/39

摘要： The object of the present invention is to provide a spark plug having a discharge portion formed of a noble-metal chip increased in the Ir content while reducing the content of expensive Rh, which can be restrained from generation of unusual wear in the form of eroding the circumferential side surface of the noble-metal chip and exhibits excellent wear resistance.In the present invention, the discharge portion (31) in the center electrode (3) side is formed of a noble-metal chip (31′) comprising an Ir-based alloy and the noble-metal chip (31′) contains 90% by weight or more of Ir as the main component and further contains 0.5% by weight or more of Rh and from 0.5 to 8% by weight of Ni, whereby the noble-metal chip (31′) [discharge portion (31)] can be ensured with good wear resistance, the generation of unusual wear which readily occurs on decreasing the Rh content can be prevented by the addition of Ni and in turn, a spark plug having high performance can be fabricated at a low cost.

摘要翻译： 本发明的目的是提供一种火花塞，其具有由稀土金属芯片形成的放电部分，其中Ir含量增加，同时降低昂贵的Rh的含量，其可以以侵蚀的形式抑制异常磨损的产生 贵金属芯片的周向侧面，耐磨性优异。在本发明中，中心电极（3）侧的排出部（31）由包含Ir的贵金属芯片（31'）形成 的贵金属片（31'）含有作为主成分的Ir占90重量％以上，还含有0.5重量％以上的Rh和0.5〜8重量％的Ni， 可以确保具有良好的耐磨性的贵金属芯片（31'）[排出部分（31）]，可以通过添加Ni并且随后的火花来防止在减少Rh含量时容易发生的异常磨损的产生 可以以低成本制造具有高性能的插头。

公开(公告)号：US06664719B2

公开(公告)日：2003-12-16

申请号：US10106249

申请日：2002-03-27

申请人： Wataru Matsutani ,  Masayuki Segawa ,  Satoko Ito

发明人： Wataru Matsutani ,  Masayuki Segawa ,  Satoko Ito

IPC分类号： H01T1320

CPC分类号： H01T13/39

摘要： A spark plug having a discharge portion formed of a noble-metal chip, the spark plug being capable of restraining wear observed on a slenderized discharge portion in particular. Discharge portion (31) includes noble-metal chip (31′). Dimension D is 0.3-0.8 mm; and H is 0.4-2 mm, where D (mm) is a diameter representing the outside diameter of the noble-metal chip, and H (mm) is a discharge portion thickness representing the shortest distance between the periphery of a discharge face (31t) and a corresponding end edge of a weld zone W where a center electrode (3) and the noble-metal chip (31′) are welded. Further, the noble-metal chip (31′) contains a predominant amount of Ir and 0.5-8% by weight Ni.

摘要翻译： 一种具有由贵金属芯片形成的放电部分的火花塞，该火花塞特别能够抑制在细长的放电部分上观察到的磨损。 放电部（31）包括贵金属芯片（31'）。 尺寸D为0.3-0.8mm; H为0.4-2mm，其中D（mm）为代表贵金属芯片外径的直径，H（mm）为排出面（31t）的周边之间的最短距离的排出部分厚度 ）和焊接区域W的对应的端部边缘，其中中心电极（3）和贵金属芯片（31'）被焊接。 此外，贵金属片（31'）含有主要量的Ir和0.5-8重量％的Ni。

公开(公告)号：US06710523B2

公开(公告)日：2004-03-23

申请号：US09937003

申请日：2001-12-28

申请人： Masayuki Segawa ,  Wataru Matsutani

发明人： Masayuki Segawa ,  Wataru Matsutani

IPC分类号： H01T1320

CPC分类号： H01T13/20 ,  H01T13/39

摘要： A spark plug of the present invention is made of an Ir alloy including a specific amount of (1) Rh, (2) Pt, or (3) Rh and Pt or Rh and Ru. The spark plug comprises tips for a center electrode and for a ground electrode that are each 0.6 to 1.8 mm in diameter and 0.2 to 0.7 mm in thickness and for an interlayer made of an Ir alloy including Ni of 40 mass % that has a diameter slightly larger or smaller than that of each tip for the center electrode and for the ground electrode and has a thickness of 0.1 to 0.6 mm. These tips can be manufactured according to the powder processing method, the dissolution method, and so on. The tip for the center electrode is joined to the end surface of the basic body of the center electrode, which is made of a Ni alloy (Inconel 600), according to laser welding. The tip for the interlayer and the tip for the ground electrode are brought into contact with a predetermined position of the ground electrode, and are joined while being pressed according to electric resistance welding. Other parts, such as an insulator and main metal fittings, are each made of general materials and have a general structure. This spark plug is excellent in resistance to lead corrosion, and the tip for the ground electrode is prevented from peeling and falling off from the base because of a thermal expansion difference.

摘要翻译： 本发明的火花塞由包含特定量的（1）Rh，（2）Pt或（3）Rh和Pt或Rh和Ru的Ir合金制成。 火花塞包括中心电极和接地电极的尖端，其直径为0.6至1.8mm，厚度为0.2至0.7mm，并且由包含40质量％的Ni的Ir合金制成的中间层具有略微的直径 大于或小于用于中心电极和接地电极的每个尖端的厚度，并且具有0.1至0.6mm的厚度。 这些尖端可以根据粉末加工方法，溶解方法等来制造。 根据激光焊接，中心电极的端部与由Ni合金（Inconel 600）制成的中心电极的基体的端面接合。 用于中间层的尖端和接地电极的尖端与接地电极的预定位置接触，并且在被电阻焊接的同时被接合。 其他部件，如绝缘体和主金属配件，均由一般材料制成，具有一般结构。 该火花塞具有优异的耐铅腐蚀性，并且由于热膨胀差，防止了接地电极的尖端从基体剥离和脱落。

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。

公开(公告)号：US08072125B2

公开(公告)日：2011-12-06

申请号：US11687828

申请日：2007-03-19

申请人： Kazuyoshi Torii ,  Kazumasa Yoshida ,  Wataru Matsutani

发明人： Kazuyoshi Torii ,  Kazumasa Yoshida ,  Wataru Matsutani

IPC分类号： H01T13/32 ,  H01T13/39

CPC分类号： H01T21/02 ,  H01T13/20 ,  H01T13/36 ,  H01T13/39

摘要： A spark plug 100 comprised of a metal shell 1, an insulator 2, a center electrode 3 and a ground electrode 4. A rear-end face of the ground electrode 4 is welded to a front-end face of the metal shell 1, and a bent portion 5 located at the intermediated position in the longitudinal direction is bent toward the center of the spark plug 100. The ground electrode 4 assumes a circular-shape with a diameter of 2 mm or less whereby an inflow of an air-fuel mixture is not disturbed even when the air-fuel mixture directly flows into a back face of the ground electrode 4. The ground electrode 4 is comprised of an outer layer 4A made of a nickel alloy and an inner layer 4B made of pure copper with an excellent thermal conductivity, in which a ratio of a cross-sectional area of the inner layer 4B to the entire cross-sectional area of the ground electrode 4 is 10% or more to 35% or less. Thus, the spark plug 100 which is excellent in heat sinking ability and can prevent a spring back phenomenon due to a difference in a coefficient of thermal expansion.

摘要翻译： 由金属壳1，绝缘体2，中心电极3和接地电极4构成的火花塞100.接地电极4的后端面焊接在金属壳1的前端面上， 位于中间位置的弯曲部分5朝向火花塞100的中心弯曲。接地电极4呈直径为2mm或更小的圆形，由此空气 - 燃料混合物 即使当空气 - 燃料混合物直接流入接地电极4的背面时也不会受到干扰。接地电极4包括由镍合金制成的外层4A和由纯铜制成的内层4B，其具有优异的 内层4B的截面积与接地电极4的整个横截面积的比率为10％以上且35％以下的导热率。 因此，具有散热能力优异且能够防止由于热膨胀系数的差异引起的弹回现象的火花塞100。

公开(公告)号：US07714489B2

公开(公告)日：2010-05-11

申请号：US11545490

申请日：2006-10-11

申请人： Kazuyoshi Torii ,  Kazumasa Yoshida ,  Wataru Matsutani

发明人： Kazuyoshi Torii ,  Kazumasa Yoshida ,  Wataru Matsutani

IPC分类号： F02M57/06 ,  H01T13/20

CPC分类号： H01T21/02 ,  H01T13/32

摘要： A spark plug comprising: a center electrode extending in a direction of an axis of said spark plug; a cylindrical insulator which has a shaft hole, and which holds said center electrode in said shaft hole in a state where a tip end of said center electrode is projected from a tip end face of said insulator; a metal shell which holds said insulator; and a ground electrode in which one end is joined to a tip end face of said metal shell, and which extends from said one end toward another end, wherein said ground electrode has an inner side face which faces said center electrode, and an outer side face which is a back face with respect to said inner side face, said outer side face is formed as an arcuately curved face when viewed from a side of said another end in an extending direction of said ground electrode, and a columnar noble metal tip is joined to said inner side face.

摘要翻译： 一种火花塞，包括：沿所述火花塞的轴线方向延伸的中心电极; 圆柱形绝缘体，其具有轴孔，并且在所述中心电极的前端从所述绝缘体的前端面突出的状态下将所述中心电极保持在所述轴孔中; 保持所述绝缘体的金属外壳; 以及接地电极，其一端接合到所述金属壳的前端面，并且从所述一端向另一端延伸，其中所述接地电极具有面向所述中心电极的内侧面，外侧 面是相对于所述内侧面的背面，当从所述另一端的侧面沿着所述接地电极的延伸方向观察时，所述外侧面形成为弧形弯曲面，柱状贵金属电极头为 连接到所述内侧面。

公开(公告)号：US20090211906A1

公开(公告)日：2009-08-27

申请号：US12390567

申请日：2009-02-23

申请人： Satoshi SUGAYA ,  Shiro Kakimoto ,  Hiroyuki Nishiyama ,  Wataru Matsutani

发明人： Satoshi SUGAYA ,  Shiro Kakimoto ,  Hiroyuki Nishiyama ,  Wataru Matsutani

IPC分类号： G01N27/26

CPC分类号： G01N27/4077 ,  G01N27/4075 ,  G01N33/0054 ,  Y02A50/246

摘要： An ammonium gas sensor is provided. The ammonium gas sensor includes: a solid electrolyte layer having oxygen ion conductivity; a detection electrode formed on one surface of the solid electrolyte layer; a reference electrode that is a counter electrode of the detection electrode; a selective reaction layer covering the detection electrode; and a protection layer covering the selective reaction layer and made from a porous material; wherein the detection electrode includes a noble metal as a main component; the selective reaction layer includes oxide represented by AxMyOz as a main component, where A is one or more kind(s) of metal, M is vanadium, tungsten, or molybdenum and x, y, z are atomic ratios; and the protection layer includes the oxide that is in an amount smaller than a content of the oxide included in the selective reaction layer.

摘要翻译： 提供了一种铵气体传感器。 铵气体传感器包括：具有氧离子传导性的固体电解质层; 形成在所述固体电解质层的一个表面上的检测电极; 作为检测电极的对电极的参考电极; 覆盖检测电极的选择性反应层; 以及覆盖选择性反应层并由多孔材料制成的保护层; 其中所述检测电极包括贵金属作为主要成分; 选择性反应层包括由AxMyOz表示的氧化物作为主要成分，其中A是一种或多种金属，M是钒，钨或钼，x，y，z是原子比; 并且保护层包括的量小于选择性反应层中包含的氧化物的含量的氧化物。

公开(公告)号：US20080029053A1

公开(公告)日：2008-02-07

申请号：US11882360

申请日：2007-08-01

申请人： Akira Suzuki ,  Wataru Matsutani

发明人： Akira Suzuki ,  Wataru Matsutani

IPC分类号： H01T13/02 ,  H01T21/02

CPC分类号： H01T21/02 ,  H01T13/39

摘要： A method for producing a spark plug, the spark plug including: a center electrode; an insulator which holds the center electrode therein in a state where a tip end portion of the center electrode protrudes therefrom; a metal shell which holds the insulator therein; a ground electrode which is fixed to the metal shell, the ground electrode having an inner side face having a width that is smaller as it advances toward a tip end side, in a portion of the inner side face positioned between a pair of tapered faces; and a discharge portion which is bonded to the inner side face of the ground electrode by laser welding so as to attain a diameter of 0.8 mm or less and a height of 0.5 mm or more, a discharge gap being formed between the discharge portion and the tip end portion of said center electrode, the method including: forming the tapered faces before the discharge portion is laser-welded to the inner side face.

摘要翻译： 一种火花塞的制造方法，所述火花塞包括：中心电极; 在中心电极的前端部突出的状态下将中心电极保持在其中的绝缘体; 一个将绝缘体固定在其中的金属外壳; 所述接地电极固定在所述金属壳体上，所述接地电极具有内侧面，所述接地电极的内侧面位于一对锥面之间，所述内侧面的前端朝向前端侧具有较小的宽度; 以及通过激光焊接结合到接地电极的内侧面的排出部分，以获得0.8mm以下的直径和0.5mm以上的高度，在排出部和排出部之间形成有排出间隙 所述中心电极的前端部分的方法包括：在将排出部分激光焊接到内侧面之前形成锥形面。

公开(公告)号：US07122947B2

公开(公告)日：2006-10-17

申请号：US10802719

申请日：2004-03-18

申请人： Hiroaki Nasu ,  Wataru Matsutani ,  Chiaki Kumada ,  Katsunari Ninomiya

发明人： Hiroaki Nasu ,  Wataru Matsutani ,  Chiaki Kumada ,  Katsunari Ninomiya

IPC分类号： H01T13/20

CPC分类号： E04F13/144 ,  C23C2222/10 ,  E04F19/00 ,  F23Q7/001 ,  F23Q2007/004 ,  H01T13/20 ,  H01T13/39 ,  H01T21/02

摘要： In a glow plug and a spark plug, the surface of a main metal shell is coated with a chromate film in which the quantity of trivalent chrome is 95 wt % or more of the contained chrome components and which has a thickness of 0.2 μm to 0.5 μm.

公开(公告)号：US20060043855A1

公开(公告)日：2006-03-02

申请号：US10519075

申请日：2004-03-22

申请人： Kenji Nunome ,  Osamu Yoshimoto ,  Wataru Matsutani ,  Yoshihiro Matsubara

发明人： Kenji Nunome ,  Osamu Yoshimoto ,  Wataru Matsutani ,  Yoshihiro Matsubara

IPC分类号： H01T13/02

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 to form a spark discharge gap between the center electrode and the side electrode, at least one of the center electrode and the side electrode including a precious metal member facing the spark discharge gap, in which a sweating phenomenon of the precious metal member can be suppressed while spark abrasion, oxidation abrasion and abnormal abrasion of the precious metal member can be suppressed. In the invention, the spark plug (100) comprises a center electrode (3), and a side electrode (4) located on one side of the center electrode (3) so that a spark discharge gap (G) is formed between the center electrode (3) and the side electrode (4). The center electrode (3) and the side electrode (4) include first and second precious metal tips (33) and (43) respectively. The first and second precious metal tips (33) and (43) face the spark discharge gap (G) so that the spark discharge gap (G) is formed. The precious metal tips (33) and so on contain Ir as a main component, 0.3 mass % to 43 mass % of Rh, 5.2 mass % to 41 mass % of Ru, and 0.4 mass % to 19 mass % of Ni.

摘要翻译： 本发明的目的是提供一种具有中心电极和侧电极的高耐久性火花塞，以在中心电极和侧电极之间形成火花放电间隙，至少一个中心电极和侧电极包括 面对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，同时可以抑制贵金属构件的火花磨损，氧化磨损和异常磨损。 在本发明中，火花塞（100）包括中心电极（3）和位于中心电极（3）一侧的侧电极（4），使得在中心电极（3）之间形成火花放电间隙（G） 电极（3）和侧电极（4）。 中心电极（3）和侧电极（4）分别包括第一和第二贵金属尖端（33）和（43）。 第一和第二贵金属端头（33）和（43）面对火花放电间隙（G），从而形成火花放电间隙（G）。 贵金属制头（33）等含有Ir为主成分，Rh为0.3质量％〜43质量％，Ru为5.2质量％〜41质量％，Ni为0.4质量％〜19质量％。