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公开(公告)号：US5866972A
公开(公告)日：1999-02-02
申请号：US784516
申请日：1997-01-17
申请人： Yoshihiro Matsubara , Hiroshi Ono
发明人： Yoshihiro Matsubara , Hiroshi Ono
CPC分类号： H01T13/39
摘要： In a spark plug for use for an internal combustion engine, an elongated insulator is provided in which a center electrode is supported. A cylindrical metal shell is provided in which the insulator is supported, and a ground electrode extends from the metal shell to form a spark gap with a front end of the center electrode. The front end of the center electrode has a tapered-off step section whose front end surface has a spark erosion resistant portion, and having a boundary between a columnar portion of the center electrode and the tapered-off step section. The boundary of the tapered-off step section is located within a front end surface of the insulator, and a front end surface of the tapered-off step section is positioned outside of the front end surface of the insulator. The front end of the center electrode forms a conoidal configuration having an apex angle formed at the center of the center electrode, circumscribing a front periphery of the insulator while maintaining an apex angle of 110 degrees or less.
摘要翻译： 在用于内燃机的火花塞中，提供了中心电极被支撑的细长绝缘体。 提供了一种圆柱形金属外壳，其中绝缘体被支撑，并且接地电极从金属外壳延伸以与中心电极的前端形成火花隙。 中心电极的前端具有锥形切割台阶部，其前端面具有耐火花腐蚀部分，并且在中心电极的柱状部分与锥形阶梯部分之间具有边界。 锥形阶梯部分的边界位于绝缘体的前端表面内，并且渐缩阶梯部分的前端表面位于绝缘体的前端表面的外侧。 中心电极的前端形成具有形成在中心电极的中心处的顶角的圆锥形构造，在保持110度或更小的顶角的同时限制绝缘体的前周边。
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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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3.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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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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7.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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8.发明授权Sparkplug voltage probe for use with an internal combustion engine by clamping sparkplug cables with an insulation base 失效用于内燃机的火花塞电压探头，通过夹住具有绝缘基座的火花塞电缆
公开(公告)号：US5543716A
公开(公告)日：1996-08-06
申请号：US262654
申请日：1994-06-20
CPC分类号： G01R15/16 , F02P17/12 , G01R31/007 , F02P2017/006 , F02P2017/123
摘要： In a sparkplug voltage probe device in use for an internal combustion engine, an insulator base is attached to the internal combustion engine, an upper surface of the insulator base having a plurality of grooves in which the sparkplug cables are placed. An insulator sheet is embedded in the insulator base. An electrode layer is provided on an upper surface of the insulator base along the grooves to form a static capacity between the electrode layer and the sparkplug cables when the voltage is applied across the spark plugs. On a lower surface of the insulator sheet an electrical shield layer is provided connected to the internal combustion engine by a ground wire. A lead wire electrically connects the electrode plate to a microcomputer so as to analyze the engine burning condition based on the static capacity between the electrode plate and the sparkplug cables.
摘要翻译： 在用于内燃机的火花塞电压探针装置中，绝缘体基座安装在内燃机上，绝缘体基座的上表面具有放置火花塞电缆的多个凹槽。 绝缘体片嵌入绝缘体基座中。 当绝缘体基底的上表面沿沟槽设置时，当跨越火花塞施加电压时，在电极层和火花塞电缆之间形成静电容。 在绝缘片的下表面上，通过接地线连接到内燃机的电屏蔽层。 引线将电极板电连接到微计算机，以基于电极板和火花塞电缆之间的静态容量分析发动机燃烧状况。
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9.发明授权Snap-in type sparkplug voltage probe device for use in internal combustion engine 失效用于内燃机的卡入式火花塞电压探头装置
公开(公告)号：US5453694A
公开(公告)日：1995-09-26
申请号：US262655
申请日：1994-06-20
CPC分类号： G01R15/16 , F02P17/12 , G01R31/007 , F02P2017/006 , F02P2017/123
摘要： In a snap-in type spark plug voltage probe device, the insulator base has an upper half and a lower half, both ends of which are integrally connected by means of a flexible portion. The upper half and the lower half have a plurality of grooves in which spark plug cables are placed. The upper half and the lower half are joined together by the flexible portion when in a closed position. The upper half has an opening to receive a protrusion provided on the lower half of the insulator base to maintain the upper half of the insulator base along the grooves, providing static capacity between the electrode layer and the spark plug cables when voltage is applied across the spark plugs. A lead wire electrically connects the electrode layer to a microcomputer so as to analyze the burning condition based on the static capacity between the electrode layer and the spark plug cables. An electrical shield layer is embedded in the insulator base in the proximity of the electrode layer and connected to the internal combustion engine by way of a ground wire located at a side of the electrode layer remote from the grooves so as to electrically shield the electrical layer. An insulator sheet is embedded in the insulator base and located between the electrode layer and the electrical shield layer.
摘要翻译： 在卡扣式火花塞电压探针装置中，绝缘体基座具有上半部和下半部，其两端通过柔性部分一体连接。 上半部和下半部具有放置火花塞电缆的多个槽。 当处于关闭位置时，上半部和下半部通过柔性部分连接在一起。 上半部具有开口以接收设置在绝缘体基座的下半部上的突出部，以沿着凹槽保持绝缘体基座的上半部分，当电压施加在电极层上时，在电极层和火花塞电缆之间提供静态电容 火花塞。 引线将电极层电连接到微型计算机，以基于电极层和火花塞电缆之间的静态容量来分析燃烧状况。 电绝缘层嵌入电极层附近的绝缘体基底中，并通过远离槽的位于电极层一侧的接地线与内燃机连接，以电屏蔽电层 。 绝缘片被嵌入绝缘体基底中，位于电极层和电屏蔽层之间。
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公开(公告)号：US5365910A
公开(公告)日：1994-11-22
申请号：US865910
申请日：1992-04-09
申请人： Shigeru Miyata , Hideji Yoshida , Yoshihiro Matsubara , Yasuo Ito
发明人： Shigeru Miyata , Hideji Yoshida , Yoshihiro Matsubara , Yasuo Ito
CPC分类号： F02P11/06 , F02P17/12 , F02P2017/006 , F02P2017/123 , F02P2017/125
摘要： A misfire detector for use in an internal combustion engine has an ignition coil including a primary coil and a secondary coil. An interrupter circuit is provided for on-off actuation of primary current flowing through a primary circuit of the ignition coil. A distributor has a series gap provided in a secondary circuit of the ignition coil, and a spark plug is adapted to be energized from the ignition coil through the series gap of the distributor. A voltage charging circuit works to electrically charge a stray capacity inherent in the spark plug immediately after an end of a spark action of the spark plug. A spark plug voltage detector circuit distinguishes the voltage waveform of more than a predetermined reference voltage level so as to deform the voltage waveform into output signals. On the basis of the width of the output signals, a distinction circuit determines whether or not the spark action ignites an air-fuel mixture in a cylinder of the internal combustion engine.
摘要翻译： 用于内燃机的失火检测器具有包括初级线圈和次级线圈的点火线圈。 提供了一个断续电路，用于对流过点火线圈的初级电路的初级电流进行开 - 关动作。 分配器具有设置在点火线圈的二次回路中的串联间隙，并且火花塞适于从点火线圈通过分配器的串联间隙通电。 电压充电电路用于在火花塞的火花作用结束之后立即对火花塞固有的杂散电容进行充电。 火花塞电压检测器电路将电压波形区分大于预定的参考电压电平，以将电压波形变形为输出信号。 基于输出信号的宽度，区分电路确定火花动作是否引燃内燃机的气缸中的空气 - 燃料混合物。
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