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    • 5. 发明授权
    • Spark plug for internal combustion engine
    • 内燃机火花塞
    • US07652413B2
    • 2010-01-26
    • US11907447
    • 2007-10-12
    • Yasushi Kawashima
    • Yasushi Kawashima
    • H01T13/20F02B19/00
    • H01T13/08H01T13/36
    • A spark plug fitted to a cylinder head has a center electrode with a noble metallic tip portion having a sectional area S1 between 0.07 mm2 and 0.95 mm2 and a melting point of 2000° C. or more, and a ground electrode with a noble metallic tip portion having a sectional area S2 and a melting point of 1700° C. or more. The plug has a length H ranging from 6.5 mm and 10 mm between the head and the tip portion of the center electrode, a length G ranging from 1.1 mm and 2.0 mm between the tip portions, a length J between the head and a housing, a length F satisfying J≦F≦H−1.0 mm between the head and an insulator, and a pocket clearance P satisfying P≧1.1×(G+0.0345×S1−1.2418+0.0327×S2−1.2418) between the housing and the insulator.
    • 安装在气缸盖上的火花塞具有具有贵金属端部的中心电极,其截面积S1为0.07mm2〜0.95mm 2,熔点为2000℃以上,并且具有贵金属电极头的接地电极 具有截面积S2和熔点为1700℃以上的部分。 插头的头部和中心电极的尖端部分之间的长度H为6.5mm和10mm,尖端部分之间的长度G为1.1mm和2.0mm,头部与壳体之间的长度J, 在头部和绝缘体之间满足J <= F <= H-1.0mm的长度F和在壳体和绝缘体之间满足P> = 1.1×(G + 0.0345×S 1 -1.2418 + 0.0327×S 2 -1.2418)的口袋间隙P 绝缘子。
    • 6. 发明授权
    • Method and device for generating ultra-high pressure
    • 用于产生超高压的方法和装置
    • US07332727B2
    • 2008-02-19
    • US10284477
    • 2002-10-31
    • Yasushi Kawashima
    • Yasushi Kawashima
    • B29C43/00
    • B23K26/0732G01N21/0317
    • A pressure source material is loaded into a space having constraint device 1, which is formed partly by optically transparent material 1a, 1b, and is disrupted under volume constraint. Light energy is externally supplied to the pressure source material constrained in the space through the optically transparent material by employing the device to apply light energy. The disruption of atomic bonds in the pressure source material is induced by heating through the supplied energy. Exceptionally high pressures are generated in the space by the use of expansive forces arising from the disruption of atomic bonds. Such a configuration can implement ultrahigh pressure abilities that has not been achieved, so far.
    • 压力源材料被装载到具有部分由光学透明材料1a,1b形成的约束装置1的空间中,并且在体积约束下被破坏。 通过使用该装置来施加光能,光能通过光学透明材料从外部供给到被限制在空间中的压力源材料。 压力源材料中原子键的破坏是通过加热供应的能量而引起的。 通过使用由原子键破坏引起的膨胀力,在空间产生了特别高的压力。 这样的配置可以实现迄今尚未实现的超高压能力。
    • 7. 发明授权
    • Spark plug with specific measured parameters
    • 火花塞具有特定的测量参数
    • US6130498A
    • 2000-10-10
    • US207661
    • 1998-12-09
    • Toshikazu ShimizuYasushi Kawashima
    • Toshikazu ShimizuYasushi Kawashima
    • H01T13/39H01T13/41H01T13/20
    • H01T13/39H01T13/41
    • A spark plug has an insulator having a through hole extending in an axial direction thereof and an insulator leg portion at an end thereof, a resistor disposed in the through hole, a central electrode disposed in the through hole to face a central electrode side end face of the resistor and protruding from an insulator end face of the insulator leg portion, and a housing holding the insulator. A length between the insulator end face and the central electrode side end face of the resistor is equal to or larger than 1.5 times as large as a length of the insulator leg portion in the axial direction. Accordingly, temperature at a contact portion between the resistor and the central electrode is prevented from being increased, resulting in long life of the spark plug.
    • 火花塞具有绝缘体,该绝缘体具有沿其轴向延伸的通孔和在其一端的绝缘体腿部,设置在通孔中的电阻器,设置在通孔中的中心电极,以面对中心电极侧端面 并且从绝缘体腿部的绝缘体端面突出并且保持绝缘体的壳体。 电阻器的绝缘体端面和中心电极侧端面之间的长度等于或大于绝缘子腿部在轴向方向上的长度的1.5倍。 因此,防止电阻器和中心电极之间的接触部分的温度升高,导致火花塞寿命长。
    • 9. 发明授权
    • Spark plug with increased durability
    • 火花塞增加耐用性
    • US07234429B2
    • 2007-06-26
    • US11213899
    • 2005-08-30
    • Nobuo AbeYasushi KawashimaTsunetoshi Goto
    • Nobuo AbeYasushi KawashimaTsunetoshi Goto
    • F02P1/00H01T13/20
    • H01T13/08F02P3/02H01T13/20
    • A spark plug is provided which is designed to be compact without sacrificing a mechanical strength of a porcelain insulator. The spark plug includes a metal shell having a base end and a top end. The porcelain insulator is made of a hollow cylinder which includes a body and an insulator head. The body is retained within the metal shell. The insulator head extends from the base end of the metal shell in a lengthwise direction of the porcelain insulator and has a length made up of a major body leading to the body of the porcelain insulator and an end portion lying far away from the body. The major body has an outer diameter D1, an inner diameter D2, and a section modulus Z at a smallest-outer diameter portion thereof which meet relations of 7.1 mm≦D1≦8.8 mm, D2≧2.8 mm, and Z≧33 mm3.
    • 提供了一种设计成紧凑的火花塞,而不会牺牲瓷绝缘体的机械强度。 火花塞包括具有基端和顶端的金属壳。 瓷绝缘体由包括主体和绝缘体头的中空圆筒制成。 身体保留在金属外壳内。 绝缘体头从金属壳的基端在瓷绝缘体的长度方向上延伸,并且具有由通向瓷绝缘体的主体的主体和远离主体的端部构成的长度。 主体具有外径D 1,内径D 2和最小外径部分处的截面模数Z,其关系为7.1mm <= D 1 <= 8.8mm,D 2> = 2.8mm ,Z> = 33mm 3。