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    Ignition system
    1.
    发明授权
    Ignition system 失效
    点火系统

    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。

    Spark plug with a corrosion impeding layer
    3.
    发明授权
    Spark plug with a corrosion impeding layer 有权
    火花塞带有防腐层

    公开(公告)号：US06472801B1

    公开(公告)日：2002-10-29

    申请号：US09603612

    申请日：2000-06-26

    申请人： Yoshihiro Matsubara ,  Shoichiro Ito ,  Yuji Hirano ,  Naomichi Miyashita ,  Hiroaki Kuki

    发明人： Yoshihiro Matsubara ,  Shoichiro Ito ,  Yuji Hirano ,  Naomichi Miyashita ,  Hiroaki Kuki

    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。

    Spark plug and ignition system for use with internal combustion engine
    4.
    发明授权
    Spark plug and ignition system for use with internal combustion engine 有权
    用于内燃机的火花塞和点火系统

    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。