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公开(公告)号：US06472801B1
公开(公告)日：2002-10-29
申请号：US09603612
申请日：2000-06-26
IPC分类号： H01T1320
CPC分类号： H01T13/52
摘要： In a creeping discharge type spark plug, the firing surface forming portions of a center electrode and a ground electrode are made of a metallic material containing a corrosion impeding component consisting of one or more of Fe, Cr and Cu. The spark plug is attached to an internal combustion engine. When it is operated under conditions of a predetermined high speed and high load, a corrosion impeding layer containing a corrosion impeding component is formed on the surface of the top end of an insulating member, with progression of spark discharge in spark discharge gaps. The corrosion impeding layer thus formed protects the center electrode from the attack by the creeping discharge spark. Therefore, the channeling is considerably effectively prevented or restricted.
摘要翻译： 在蠕变放电型火花塞中，中心电极和接地电极的烧成面形成部分由含有由Fe，Cr和Cu中的一种或多种组成的防腐蚀部件的金属材料制成。 火花塞连接在内燃机上。 当其在预定的高速和高负载的条件下运行时，在绝缘构件的顶端的表面上形成包含防腐蚀部件的防腐层，伴随着火花放电间隙的火花放电。 这样形成的防腐层可以保护中心电极免受蠕变放电火花的攻击。 因此，有效地防止或限制了渠道化。
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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
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。
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公开(公告)号：US20070126330A1
公开(公告)日：2007-06-07
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
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。
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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
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。
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公开(公告)号：US06617706B2
公开(公告)日：2003-09-09
申请号：US09435368
申请日：1999-11-08
申请人： Yoshihiro Matsubara , Akio Kokubu , Kazumasa Yoshida , Makoto Yamaguchi , Kazuya Iwata , Shoichiro Ito , Hiroshi Ono
发明人： Yoshihiro Matsubara , Akio Kokubu , Kazumasa Yoshida , Makoto Yamaguchi , Kazuya Iwata , Shoichiro Ito , Hiroshi Ono
IPC分类号： H01T1302
CPC分类号： H01T13/39 , H01T13/467
摘要： An ignition system has a spark plug and a positive voltage applying unit. The spark plug includes a central electrode, a porcelain insulator for holding the central electrode, a main metallic shell for holding the porcelain insulator, and a ground electrode electrically connected to the main metallic shell. The positive voltage applying unit applies a positive voltage to the central electrode of the spark plug in comparison with the ground electrode, so that an ignition high voltage is applied between the central electrode and the ground electrode. In the spark plug, a spark discharge gap is formed between the ground electrode and a distal end portion of the central electrode. The ground electrode is positioned so that a rear edge of a mating face opposed to a peripheral side of the central electrode is positioned in the side of the distal end of the central electrode in comparison with an end face of the porcelain insulator.
摘要翻译： 点火系统具有火花塞和正电压施加单元。 火花塞包括中心电极，用于保持中心电极的瓷绝缘体，用于保持瓷绝缘体的主金属壳，以及与主金属壳电连接的接地电极。 正电压施加单元与接地电极相比，向火花塞的中心电极施加正电压，从而在中心电极和接地电极之间施加点火高电压。 在火花塞中，在接地电极和中心电极的远端部分之间形成火花放电间隙。 接地电极的定位使得与瓷绝缘体的端面相比，与中心电极的周边相对的配合面的后边缘位于中心电极的远端侧。
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公开(公告)号：US06326720B1
公开(公告)日：2001-12-04
申请号：US09398900
申请日：1999-09-20
申请人： Shoichiro Ito , Yoshihiro Matsubara
发明人： Shoichiro Ito , Yoshihiro Matsubara
IPC分类号： H01T1320
CPC分类号： H01T13/41 , F02B2275/18 , H01T13/39
摘要： A spark plug includes a spark portion of an Ir-based metal and a resistor disposed between a center electrode and a metallic terminal and adapted to establish an electric resistance of not less than 10 k&OHgr;, preferably not less than 15 k&OHgr;, but not greater than 25 k&OHgr; as measured between the center electrode and the metallic terminal. Thus, even in a system in which an ignition coil is connected directly to the spark plug without use of a high tension cable, an electrical discharge with a relatively weak current, such as a glow discharge, can be maintained stably, so that even at high speed or heavy load operation, consumption of the spark portion caused by volatilization of Ir through oxidation can be suppressed, thereby extending spark plug life.
摘要翻译： 火花塞包括Ir基金属的火花部分和设置在中心电极和金属端子之间的电阻器，并适于建立不小于10kOMEGA的电阻，优选不小于15kOMEGA，但不大于 25 kOMEGA，在中心电极和金属端子之间测量。 因此，即使在不使用高压电缆的情况下将点火线圈直接连接到火花塞的系统中，也可以稳定地保持具有相对弱电流（例如辉光放电）的放电，使得即使在 高速或重负荷运转时，可以抑制由Ir的氧化挥发引起的火花部分的消耗，从而延长火花塞寿命。
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7.发明授权Spark plug having ground electrode including precious metal alloy portion containing first, second and third components 有权具有接地电极的火花塞包括含有第一，第二和第三组分的贵金属合金部分公开(公告)号：US07288879B2
公开(公告)日：2007-10-30
申请号：US10951788
申请日：2004-09-29
摘要： A spark plug including: a cylindrical metal shell; a cylindrical insulator fixed to the metal shell; a center electrode having its leading end protruding from a leading end of the insulator and its trailing end fixed to the insulator; and a ground electrode having one end fixed to the metal shell and forming a discharge gap between the ground electrode and the center electrode. The ground electrode includes a precious metal alloy portion containing: 50 weight % or more of a first component of one of Rh and Pt; less than 50 weight % of a second component of the other of Rh and Pt; and optionally a third component containing at least one of: Ni in an amount of less than 7 weight %; and Zr in an amount of less than 2 weight % the content of the third component being less than that of the second component.
摘要翻译： 一种火花塞，包括：圆柱形金属壳; 固定在金属外壳上的圆柱形绝缘体; 中心电极的前端从绝缘体的前端突出，其后端固定在绝缘体上; 以及接地电极，其一端固定在金属壳上，并在接地电极和中心电极之间形成放电间隙。 接地电极包括含有50重量％以上的Rh和Pt中的一个的第一成分的贵金属合金部分; Rh和Pt中另一个的第二成分的重量比小于50重量％ 和任选的含有少于7重量％的Ni中的至少一种的第三组分; 和Zr的量小于2重量％，第三组分的含量小于第二组分的含量。
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公开(公告)号：US07279827B2
公开(公告)日：2007-10-09
申请号：US10519075
申请日：2004-03-22
IPC分类号： H01T13/20
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. At least one of the center electrode and the side electrode includes a precious metal member facing a spark discharge gap between the electrodes. A sweating phenomenon of the precious metal member can be suppressed while spark abrasion, oxidation abrasion and abnormal abrasion of the precious metal member are suppressed. The precious metal member contains Ir as a main component, and smaller amounts of Rh, Ru, and Ni.
摘要翻译： 本发明的目的是提供一种设置有中心电极和侧面电极的耐久性更高的火花塞。 中心电极和侧面电极中的至少一个包括面对电极之间的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，同时抑制贵金属构件的火花磨损，氧化磨损和异常磨损。 贵金属构件含有Ir作为主要成分，较少量的Rh，Ru，Ni。
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公开(公告)号：US20060043856A1
公开(公告)日：2006-03-02
申请号：US10951788
申请日：2004-09-29
IPC分类号： H01T13/20
摘要： A spark plug including: a cylindrical metal shell; a cylindrical insulator fixed to the metal shell; a center electrode having its leading end protruding from a leading end of the insulator and its trailing end fixed to the insulator, and a ground electrode having one end fixed to the metal shell and forming a discharge gap between the ground electrode and the center electrode. The ground electrode includes a precious metal alloy portion containing: 50 weight % or more of a first component of one of Rh and Pt; less than 50 weight % of a second component of the other of Rh and Pt; and optionally a third component containing at least one of: Ni in an amount of less than 7 weight %; and Zr in an amount of less than 2 weight % the content of the third component being less than that of the second component.
摘要翻译： 一种火花塞，包括：圆柱形金属壳; 固定在金属外壳上的圆柱形绝缘体; 中心电极的前端从绝缘体的前端突出，其后端固定在绝缘体上，接地电极的一端固定在金属外壳上，在接地电极和中心电极之间形成放电间隙。 接地电极包括含有50重量％以上的Rh和Pt中的一个的第一成分的贵金属合金部分; Rh和Pt中另一个的第二成分的重量比小于50重量％ 和任选的含有少于7重量％的Ni中的至少一种的第三组分; 和Zr的量小于2重量％，第三组分的含量小于第二组分的含量。
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10.发明授权Lateral electrode type spark plug with geometrical relationships with ground electrode 失效具有与接地电极几何关系的侧面电极型火花塞
公开(公告)号：US6091185A
公开(公告)日：2000-07-18
申请号：US58781
申请日：1998-04-13
摘要： In a spark plug, a cylindrical metal shell (1) is provided whose inner wall has a rear section and a front section to respectively serve as a diameter-increased section and a diameter-decreased section with a seat portion (1) as a boundary therebetween. An insulator (2) is fixedly placed within the metal shell (1) so that a front end surface (21) of the insulator (2) extends beyond a front end surface (12) of the metal shell (1) with a shoulder portion (231) of an insulator nose (23) engaged against the seat portion (11) of the metal shell (1) by way of a packing (10). A center electrode (3) is fixedly placed within an axial bore (22) of the insulator (2), A ground electrode (4) is connected to the front end surface (12) of the metal shell (1), and bent so that a front end surface (41) of the ground electrode (4) opposes an outer surface (311) of the center electrode (3). The outer surface (311) and a front end surface (31) of the center electrode (3) are provided to respectively serve as a firing portion so as to form a spark discharge gap (Go) with the front end surface (41) of the ground electrode (4), the front end surface (41) of the ground electrode (4) forming an air gap (G) with an outer surface (25) of the insulator (2) so as to release creeping spark discharges along a front end surface (21) of the insulator (2).
摘要翻译： 在火花塞中，设置有圆筒形的金属壳（1），其内壁具有后部和前部，分别用作直径增加部分和具有座部（1）作为边界的直径减小部分 之间。 绝缘体（2）被固定地放置在金属壳体（1）内，使得绝缘体（2）的前端表面（21）延伸超出金属壳体（1）的前端表面（12），肩部 （231）通过密封（10）与金属壳（1）的座部（11）接合的绝缘体鼻（23）。 中心电极（3）固定地放置在绝缘体（2）的轴向孔（22）内，接地电极（4）连接到金属外壳（1）的前端表面（12） 接地电极（4）的前端面（41）与中心电极（3）的外表面（311）相对。 设置中心电极（3）的外表面（311）和前端表面（31）以分别用作点火部分，以便与前端表面（41）形成火花放电间隙（Go） 所述接地电极（4），所述接地电极（4）的前端面（41）与所述绝缘体（2）的外表面（25）形成气隙（G），以沿着所述接地电极 绝缘体（2）的前端面（21）。
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