公开(公告)号：US06337533B1

公开(公告)日：2002-01-08

申请号：US09324860

申请日：1999-06-03

申请人： Ken Hanashi ,  Keiji Kanao ,  Tsunetoshi Goto

发明人： Ken Hanashi ,  Keiji Kanao ,  Tsunetoshi Goto

IPC分类号： H01T1320

CPC分类号： H01T13/39 ,  H01T21/02

摘要： In a spark plug, a chip made of Ir alloy is partly buried into and bonded by laser beam welding on the ground electrode made of Ni base alloy. A molten portion is extended from the inside of the ground electrode through a junction of the chip and the electrode into the inside of the chip, but not formed on the spark discharge surface of the chip. Where A is a maximum length from the end of the junction on the side of the center electrode to the end of the molten portion on the junction on the side opposite to the center electrode, within the length A, B is a length of both ends of the molten portion, t is a length of the chip perpendicularly extending from the junction and d is a sum of the length t and a length of the molten portion protruding from the junction into the ground electrode, a ratio of A/B is not less than 0.5 and a ratio of d/t is not less than 2, but more than 4. When an end surface of the chip is the spark discharge surface, laser beam welding is conducted from the ground electrode toward a side of the other end surface or from the longitudinal side surface of the chip toward the ground electrode.

摘要翻译： 在火花塞中，由Ir合金制成的芯片通过激光束焊接部分地埋在由Ni基合金制成的接地电极上并粘合。 熔融部分从接地电极的内部延伸通过芯片和电极的接合到芯片的内部，但不形成在芯片的火花放电表面上。 其中A是从中心电极一侧的结的端部到与中心电极相对的一侧的接合处的熔融部分的端部的最大长度，在长度A内，B是两端的长度 熔融部分的t是从接合部垂直延伸的芯片的长度，d是长度t和熔融部分从接合部分向接地电极突出的长度的总和，A / B的比率不是 小于0.5，d / t的比例不小于2，但大于4.当芯片的端面是火花放电表面时，激光束焊接从接地电极朝向另一端的一侧 表面或从芯片的纵向侧表面朝向接地电极。

公开(公告)号：US06304023B1

公开(公告)日：2001-10-16

申请号：US09260100

申请日：1999-03-02

申请人： Anthony K. Chan

发明人： Anthony K. Chan

IPC分类号： H01T1320

CPC分类号： F02P1/00 ,  H01T13/08 ,  H01T13/44

摘要： A spark plug for an internal combustion engine comprising a center electrode having a shank portion which is fluted. The flutes have at least one edge which protrudes through an opening in a ground electrode of the spark plug. The principle use is for lean burn natural gas engines, however any air-fuel mixtures 14 will benefit from this invention. For example, propane or dual fuel engines may have spark plugs with this invention.

摘要翻译： 一种用于内燃机的火花塞，其包括具有槽纹的柄部的中心电极。 凹槽具有突出通过火花塞的接地电极中的开口的至少一个边缘。 原理用途是用于稀燃天然气发动机，然而任何空气燃料混合物14将从本发明中受益。 例如，丙烷或双燃料发动机可以具有本发明的火花塞。

公开(公告)号：US06265814B1

公开(公告)日：2001-07-24

申请号：US09143613

申请日：1998-08-28

申请人： Tohru Yoshinaga ,  Takehiko Kato ,  Tokio Kohama ,  Hiroshi Yorita ,  Masaki Takeyama ,  Masatoshi Ikeda

发明人： Tohru Yoshinaga ,  Takehiko Kato ,  Tokio Kohama ,  Hiroshi Yorita ,  Masaki Takeyama ,  Masatoshi Ikeda

IPC分类号： H01T1320

CPC分类号： H01T13/40

摘要： To excellently grow flame kernel while lowering breakdown voltage, a bypass electrode comprising a semiconductor material is installed in a path bypassing an inductive spark gap between a center electrode and a ground electrode, and the center electrode and the ground electrode are electrically connected by the bypass electrode and capacitive discharge is carried out by applying breakdown voltage between the center electrode and the ground electrode via the bypass electrode, and thereafter, inductive discharge is carried out through the inductive spark gap.

摘要翻译： 为了在降低击穿电压的同时优良地生长火焰核，包括半导体材料的旁路电极安装在绕过中心电极和接地电极之间的感应火花隙的路径中，并且中心电极和接地电极通过旁路电连接 电极和电容放电是通过旁路电极在中心电极和接地电极之间施加击穿电压进行的，之后通过感应火花隙进行感应放电。

公开(公告)号：US06204594B1

公开(公告)日：2001-03-20

申请号：US09096182

申请日：1998-06-12

申请人： Robert S. Ingham

发明人： Robert S. Ingham

IPC分类号： H01T1320

CPC分类号： G01L23/22

摘要： A spark plug is installed in an internal combustion engine to monitor engine performance. The spark plug includes an outer shell having a central longitudinal axis and defining a first bore extending along the central longitudinal axis. The outer shell also includes a second bore that is offset from the central longitudinal axis. An insulative core is positioned in the first bore and defines a third bore concentric with the first bore. A first electrode is positioned in and has a firing end extending beyond the third bore. A second electrode including a firing surface is located adjacent to the firing end of the first electrode. A sensor is located within the third bore.

摘要翻译： 火花塞安装在内燃机中以监测发动机性能。 火花塞包括具有中心纵向轴线并且限定沿中心纵向轴线延伸的第一孔的外壳。 外壳还包括偏离中心纵向轴线的第二孔。 绝缘芯位于第一孔中并限定与第一孔同心的第三孔。 第一电极定位在并且具有延伸超过第三孔的点火端。 包括烧制表面的第二电极位于第一电极的烧制端附近。 传感器位于第三孔内。

公开(公告)号：US06819031B2

公开(公告)日：2004-11-16

申请号：US09919998

申请日：2001-08-02

申请人： Tsunenobu Hori

发明人： Tsunenobu Hori

IPC分类号： H01T1320

CPC分类号： H01T13/39 ,  H01T21/02

摘要： Reliability in connection between a chip and a base material (at least one of the central electrode and the ground electrode) of a spark plug is improved by forming a plurality of welding layers at connection between the chip and the base material in a distance increasing direction from the central electrode with overlap. With respect to section along the connection surface the sum of the sectional area of the first weld layer and the second weld layer at the overlap portion between the first and second weld layers is equal to or greater than 1.4 times the sectional are of the chip. A stress releasing layer of which linear expansion coefficient is between those of the chip and the base material may be provided between the chip and the base material for welding.

摘要翻译： 通过在距离增加方向的芯片和基材之间的连接处形成多个焊接层来改善火花塞的芯片和基材（至少一个中心电极和接地电极）之间的连接可靠性 从中心电极重叠。 关于沿着连接表面的截面，第一焊接层和第二焊接层之间的重叠部分处的第一焊接层和第二焊接层的截面积之和等于或大于芯片截面的1.4倍。 可以在芯片和用于焊接的基材之间设置线芯膨胀系数在芯片和基材之间的应力释放层。

公开(公告)号：US06762539B2

公开(公告)日：2004-07-13

申请号：US10019860

申请日：2002-05-07

申请人： Dittmar Klett ,  Heinz Ulm ,  Simon Schmittinger ,  Dietrich Trachte ,  Jochen Fischer

发明人： Dittmar Klett ,  Heinz Ulm ,  Simon Schmittinger ,  Dietrich Trachte ,  Jochen Fischer

IPC分类号： H01T1320

CPC分类号： H01T13/39 ,  H01T21/02

摘要： A spark plug for an internal combustion engine includes a middle electrode which has an electrode base body (5) with an end face (51) oriented toward the combustion chamber, to which end face a precious metal platelet (8) is attached. An end section (15) of the electrode base body oriented toward the combustion chamber is formed in the shape of a truncated cone. The precious metal platelet (8) is likewise formed in the shape of a truncated cone and the diameter of the end face (52) of the electrode base body oriented toward the combustion chamber corresponds to the diameter of the end face (84) of the precious metal platelet oriented away from the combustion chamber. A method for producing middle electrodes for a spark plug of an internal combustion engine is also proposed.

摘要翻译： 一种用于内燃机的火花塞包括一个中间电极，该中间电极具有电极基体（5），该电极基体（5）的端面（51）朝向燃烧室定向，该端面附着有贵金属血小板（8）。 朝向燃烧室的电极基体的端部（15）形成为截锥体的形状。 贵金属血小板（8）同样形成为截头圆锥形状，并且朝向燃烧室方向的电极基体的端面（52）的直径对应于端面（84）的直径 贵金属血小板取向远离燃烧室。 还提出了一种用于制造内燃机的火花塞的中间电极的方法。

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％。

公开(公告)号：US06731052B2

公开(公告)日：2004-05-04

申请号：US09739306

申请日：2000-12-19

申请人： Tooru Moriya

发明人： Tooru Moriya

IPC分类号： H01T1320

CPC分类号： H01T13/32

摘要： In a spark plug for an internal combustion engine, a welded portion of a ground electrode has a polygonal cross section including six corners. A side surface of the ground electrode, positioned opposite to a side surface including a surface portion opposite to a front end face of a center electrode, is smaller in width than the opposite side surface so that the ground electrode can be larger in width and thickness than a spark plug of a related art without causing the corners of the cross section of the ground electrode at the joint between the ground electrode and a metallic shell to protrude from a front end face of a metallic shell.

摘要翻译： 在用于内燃机的火花塞中，接地电极的焊接部分具有包括六个角的多边形横截面。 接地电极的与包括与中心电极的前端面相反的表面部分的侧表面相对的侧表面的宽度比相对的侧表面宽，使得接地电极的宽度和厚度可以更大 不会使接地电极和金属壳体之间的接合处的接地电极的截面的角部从金属壳体的前端面突出而进行相关技术的火花塞。

公开(公告)号：US06724132B2

公开(公告)日：2004-04-20

申请号：US09893422

申请日：2001-06-29

申请人： Keiji Kanao

发明人： Keiji Kanao

IPC分类号： H01T1320

CPC分类号： H01T13/467 ,  Y02E20/14

摘要： In a side ground electrode type of spark plug, sizes of discharge members are optimized to reduce a useless portion in discharging to improve discharge wear resistance. A first discharge member mainly comprising Ir alloy is welded to the central electrode. A second discharge member comprising Ir metal circle plate is welded to the ground electrode, wherein a side surface of the first discharge member confronts a surface of the second discharge member to form a spark discharge gap G≧0.2 mm, D(a width of the first discharge member)≧1.6 mm. |A−D|≦(G+0.5 mm). A is a width of the second discharge member. Moreover, D≦5.0 mm. A maximum cross-sectional area of weld portion between the first discharge member and the central electrode ≦8 mm2. This weld portion has distance L to the second discharge member. L≧G.

摘要翻译： 在侧接电极型火花塞中，放电部件的尺寸被优化以减少放电中的无用部分以改善放电耐磨性。 主要包含Ir合金的第一放电元件焊接到中心电极。 包括Ir金属圆盘的第二放电元件焊接到接地电极，其中第一放电元件的侧表面面对第二放电元件的表面，以形成火花放电间隙G> = 0.2mm，D（宽度 第一放电元件）> = 1.6mm。 | A-D | <=（G + 0.5mm）。 A是第二排出构件的宽度。 此外，D <= 5.0mm。 第一放电构件和中心电极之间的焊接部分的最大横截面面积<= 8MM 2。 该焊接部具有与第二排出部件的距离L. L> = G。

公开(公告)号：US06670740B2

公开(公告)日：2003-12-30

申请号：US09943105

申请日：2001-08-30

申请人： William W. Landon, Jr.

发明人： William W. Landon, Jr.

IPC分类号： H01T1320

CPC分类号： H01T13/467 ,  H01T13/28

摘要： A spark plug includes a sparking electrode with a firing tip and a ground electrode. The ground electrode includes a toroidal member, having a convex outer surface, coupled to a support portion of a sleeve of the ground electrode. The toroidal member forms an annular curve disposed generally transverse to and having a radial center coinciding with a central axis of the insulator body, whereby each differential segment of the toroidal member radially thereabout is generally equidistant to the firing tip. The toroidal member is a closest portion of the ground electrode relative to the firing tip. At least a portion of the outer surface of the toroidal member opposing the firing tip has a radius of curvature of about that of the firing tip for providing a spark path of least from the firing tip to a point of contact on the opposing surface defined by the toroidal member.

摘要翻译： 火花塞包括具有点火尖端和接地电极的火花电极。 接地电极包括具有凸形外表面的环形构件，其耦合到接地电极的套筒的支撑部分。 环形构件形成大致横向于并且具有与绝缘体本体的中心轴线重合的径向中心的环形曲线，由此环形构件的径向周向的每个差分段大致等于点火尖端。 环形构件是接地电极相对于点火尖端的最接近的部分。 环形构件的与点火尖端相对的外表面的至少一部分具有大约为点火尖端的曲率半径，以提供至少从点火尖端到在由相应表面限定的相对表面上的接触点的火花通路 环形构件。