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公开(公告)号：US20070114898A1
公开(公告)日：2007-05-24
申请号：US11601111
申请日：2006-11-17
IPC分类号： H01T13/20
CPC分类号： F02P9/007 , F02P3/0884 , H01T13/20 , H01T13/50
摘要： A plasma jet spark plug provides improved ignitability and durability by forming a part of a spark discharge gap outside the electric discharge space which generates plasma. An ignition system for the plasma jet spark plug is also disclosed. The plasma jet spark plug includes a center electrode, an insulator defining an axial bore which partially surrounds the center electrode, a cavity surrounded by an inner circumferential face of the axial bore which extends from an opening portion of a front end of the axial bore of the insulator and wherein a front end face of the center electrode is formed. A ground electrode is bent towards a front end portion of the insulator.
摘要翻译： 等离子体火花塞通过在产生等离子体的放电空间之外形成火花放电间隙的一部分来提供改善的点火性和耐久性。 还公开了一种用于等离子体火花塞的点火系统。 等离子喷射火花塞包括中心电极，限定轴向孔的绝缘子，其部分地围绕中心电极，由轴向孔的内周面包围的空腔，其从轴向孔的前端的开口部分延伸， 绝缘体，并且其中形成中心电极的前端面。 接地电极朝向绝缘体的前端部弯曲。
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公开(公告)号：US07827954B2
公开(公告)日：2010-11-09
申请号：US11603158
申请日：2006-11-22
摘要： There is provided a method for controlling a plasma-jet spark plug in a four-stroke internal combustion engine, including the steps of: causing the spark plug to generate a primary discharge during either a compression stroke or an expansion stroke of the engine in such a manner as to produce a plasma by the primary discharge; and causing the spark plug to generate a secondary discharge during a time after the primary discharge and before the completion of a subsequent intake stroke of the engine.
摘要翻译： 提供了一种用于控制四冲程内燃机中的等离子体火花塞的方法，包括以下步骤：在发动机的压缩冲程或膨胀冲程期间使火花塞产生初次排放 通过初次放电产生等离子体的方式; 并且使得火花塞在一次排出之后的时间和在随后的发动机的进气冲程完成之前产生二次排放。
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公开(公告)号：US07714488B2
公开(公告)日：2010-05-11
申请号：US11601111
申请日：2006-11-17
IPC分类号： H01T13/20
CPC分类号： F02P9/007 , F02P3/0884 , H01T13/20 , H01T13/50
摘要： A plasma jet spark plug provides improved ignitability and durability by forming a part of a spark discharge gap outside the electric discharge space which generates plasma. An ignition system for the plasma jet spark plug is also disclosed. The plasma jet spark plug includes a center electrode, an insulator defining an axial bore which partially surrounds the center electrode, a cavity surrounded by an inner circumferential face of the axial bore which extends from an opening portion of a front end of the axial bore of the insulator and wherein a front end face of the center electrode is formed. A ground electrode is bent towards a front end portion of the insulator.
摘要翻译： 等离子体火花塞通过在产生等离子体的放电空间之外形成火花放电间隙的一部分来提供改善的点火性和耐久性。 还公开了一种用于等离子体火花塞的点火系统。 等离子喷射火花塞包括中心电极，限定轴向孔的绝缘子，其部分地围绕中心电极，由轴向孔的内周面包围的空腔，其从轴向孔的前端的开口部分延伸， 绝缘体，其中形成中心电极的前端面。 接地电极朝向绝缘体的前端部弯曲。
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公开(公告)号：US20070114901A1
公开(公告)日：2007-05-24
申请号：US11603158
申请日：2006-11-22
IPC分类号： H01T13/00
摘要： There is provided a method for controlling a plasma-jet spark plug in a four-stroke internal combustion engine, including the steps of: causing the spark plug to generate a primary discharge during either a compression stroke or an expansion stroke of the engine in such a manner as to produce a plasma by the primary discharge; and causing the spark plug to generate a secondary discharge during a time after the primary discharge and before the completion of a subsequent intake stroke of the engine.
摘要翻译： 提供了一种用于控制四冲程内燃机中的等离子体火花塞的方法，包括以下步骤：在发动机的压缩冲程或膨胀冲程期间使火花塞产生初次排放 通过初次放电产生等离子体的方式; 并且使得火花塞在一次排出之后的时间和在随后的发动机的进气冲程完成之前产生二次排放。
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5.发明授权Spark plug for use in an internal-combustion engine with a bilayer ground electrode 有权用于具有双层接地电极的内燃机的火花塞公开(公告)号：US08072125B2
公开(公告)日：2011-12-06
申请号：US11687828
申请日：2007-03-19
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。
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公开(公告)号：US07714489B2
公开(公告)日：2010-05-11
申请号：US11545490
申请日：2006-10-11
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。
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公开(公告)号：US20090211906A1
公开(公告)日：2009-08-27
申请号：US12390567
申请日：2009-02-23
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。
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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
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。
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公开(公告)号：US07122947B2
公开(公告)日：2006-10-17
申请号：US10802719
申请日：2004-03-18
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.
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公开(公告)号：US20060043855A1
公开(公告)日：2006-03-02
申请号：US10519075
申请日：2004-03-22
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％。
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