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公开(公告)号：US06752677B2
公开(公告)日：2004-06-22
申请号：US10135845
申请日：2002-05-01
申请人： Kenichi Nishikawa , Makoto Sugimoto
发明人： Kenichi Nishikawa , Makoto Sugimoto
IPC分类号： H01T1338
摘要： A method for producing a spark plug, the spark plug comprising a center electrode, a metal shell and an alumina ceramic insulator disposed between the center electrode and the metal shell, wherein at least part of the surface of the insulator is covered with a glaze layer comprising oxides, the method comprising the steps of: preparing a coated glaze powder so that a surface of each particle of a glaze powder is covered by an elution-suppressing coating layer, the elution-suppressing coating layer suppressing an elution of water soluble component that is contained in each particle of the glaze powder; preparing a glaze slurry by suspending the glaze powder in a water solvent; applying the glaze slurry to a surface of the insulator so as to form a glaze powder-deposited layer; and baking the glaze powder-deposited layer to the surface of the insulator to form the glaze layer by heating the glaze powder-deposited layer.
摘要翻译： 一种用于制造火花塞的方法，所述火花塞包括设置在所述中心电极和所述金属壳之间的中心电极，金属壳和氧化铝陶瓷绝缘体，其中所述绝缘体的表面的至少一部分被釉层覆盖 所述方法包括以下步骤：制备涂覆的釉粉，使得釉粉的每个颗粒的表面被洗脱抑制涂层覆盖，所述洗脱抑制涂层抑制水溶性组分的洗脱， 包含在釉粉的每个颗粒中; 通过将釉粉末悬浮在水溶剂中制备釉浆料; 将釉浆施加到绝缘体的表面，以形成釉粉沉积层; 并通过加热釉料粉末沉积层将釉粉沉积层烘烤到绝缘体的表面以形成釉层。
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公开(公告)号：US06590317B2
公开(公告)日：2003-07-08
申请号：US09867759
申请日：2001-05-31
IPC分类号： H01T1300
CPC分类号： H01T13/38
摘要： A glaze layer 2d of the spark plug has the composition comprising 1 mol % or less of a Pb component in terms of PbO; 25 to 45 mol % of a Si component in terms of SiO2; 20 to 40 mol % of a B component in terms of B2O3; 5 to 25 mol % of a Zn component in terms of ZnO; 0.5 to 15 mol % of Ba and/or Sr components in terms of BaO or SrO; 5 to 10 mol % in total of at least one alkaline metal component of of Na, K and Li in terms of Na2O, K2O, and Li2, respectively, where K is essential; and further, 0.5 to 5 mol % in total of one or two kinds or more of Mo, W, Ni, Co, Fe and Mn in terms of MoO3, WO3, Ni3O4, Co3O4, Fe2O3, and MnO2, respectively.
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公开(公告)号：US06334800B1
公开(公告)日：2002-01-01
申请号：US09546664
申请日：2000-04-10
IPC分类号： H01T2102
摘要： In a spark plug (100), the resistor composition constituting a resistor (15) contains semiconductive ceramic particles, offering a superior load life characteristic. Also, the value of (&agr;2−&agr;1)/&agr;1>=−0.30, where a value of electric resistance between a terminal (13) and a center electrode (3) is &agr;1 at 20° C. and &agr;2 at 150° C., so that deterioration of the radio frequency noise prevention performance at high temperatures can be effectively suppressed. The resistor composition contains semiconductive ceramic particles whose temperature coefficient of electric resistance shows a positive value, or a negative value of relatively small absolute value, (e.g., TiO2 particles having a rutile type crystalline structure, titanate or zirconate of alkali earth metal elements, titanium suboxide, etc.), or titanium metal. Thus, the invention provides a resistor-incorporated spark plug which is enabled to offer a stable load life characteristic even when a high load acts thereon, and which is unlikely to deteriorate in the radio frequency noise prevention performance even under high temperatures.
摘要翻译： 在火花塞（100）中，构成电阻器（15）的电阻器组合物包含半导体陶瓷颗粒，具有优异的负载寿命特性。 此外，（α2-α1）/α1> = 0.30的值，其中端子（13）和中心电极（3）之间的电阻值在20℃为α1，在150℃为α2。 能够有效地抑制高温下的射频噪声防止性能的恶化。 电阻体组合物含有电阻温度系数为正值或绝对值相对较小的负值的半导体陶瓷粒子（例如，具有金红石型结晶结构的TiO 2粒子，碱土类金属元素的钛酸酯或锆酸酯，钛 低氧化物等）或钛金属。 因此，本发明提供了一种结合电阻器的火花塞，其即使在高负载时也能够提供稳定的负载寿命特性，即使在高温下也不太可能降低射频噪声防止性能。
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公开(公告)号：US07081274B2
公开(公告)日：2006-07-25
申请号：US10179888
申请日：2002-06-26
申请人： Kenichi Nishikawa , Makoto Sugimoto
发明人： Kenichi Nishikawa , Makoto Sugimoto
IPC分类号： B05D3/02
CPC分类号： H01T21/02 , Y10T29/49231
摘要： A method for producing a spark plug, the spark plug comprising a center electrode, a metal shell and an alumina ceramic insulator disposed between the center electrode and the metal shell, wherein at least part of the surface of the insulator is covered with a glaze layer, the method comprising the steps of: preparing a plurality of kinds of element glaze powders wherein each kind of the element glaze powders has a different dilatometric softening point and a different linear expansion coefficient compared to other kinds of element glaze powders; coating a surface of the insulator with the plurality of kinds of element glaze powders so as to form a glaze powder layer; and baking the glaze powder layer to the surface of the insulator so as to form the glaze layer by heating the glaze powder layer.
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公开(公告)号：US06590318B2
公开(公告)日：2003-07-08
申请号：US09794151
申请日：2001-02-28
申请人： Kenichi Nishikawa , Makoto Sugimoto
发明人： Kenichi Nishikawa , Makoto Sugimoto
IPC分类号： H01T1320
摘要： A spark plug having a glaze layer on the insulator thereof, wherein the glaze layer has a reduced Pb content, is capable of being fired at a relatively low temperature, exhibits excellent insulation properties, and can have a smooth surface.
摘要翻译： 一种在其绝缘体上具有釉层的火花塞，其中所述釉层具有降低的Pb含量，能够在相对低的温度下烧制，表现出优异的绝缘性能，并且可以具有光滑的表面。
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6.发明授权Resistor-incorporated spark plug and manufacturing method of resistor-incorporated spark plug 失效电阻式并入火花塞及电阻式火花塞的制造方法
公开(公告)号：US6160342A
公开(公告)日：2000-12-12
申请号：US64002
申请日：1998-04-21
摘要： In a spark plug (100), the resistor composition constituting a resistor (15) contains semiconductive ceramic particles, offering a superior load life characteristic. Also, the value of (.alpha.2-.alpha.1)/.alpha.1 >=-0.30, where a value of electric resistance between a terminal (13) and a center electrode (3) is .alpha.1 at 20.degree. C. and .alpha.2 at 150.degree. C., so that deterioration of the radio frequency noise prevention performance at high temperatures can be effectively suppressed. The resistor composition contains semiconductive ceramic particles whose temperature coefficient of electric resistance shows a positive value, or a negative value of relatively small absolute value, (e.g., TiO.sub.2 particles having a rutile type crystalline structure, titanate or zirconate of alkali earth metal elements, titanium suboxide, etc.), or titanium metal. Thus, the invention provides a resistor-incorporated spark plug which is enabled to offer a stable load life characteristic even when a high load acts thereon, and which is unlikely to deteriorate in the radio frequency noise prevention performance even under high temperatures.
摘要翻译： 在火花塞（100）中，构成电阻器（15）的电阻器组合物包含半导体陶瓷颗粒，具有优异的负载寿命特性。 此外，（α2-α1）/α1 = 0.30的值，其中端子（13）和中心电极（3）之间的电阻值在20℃为α1，α2 在150℃下，可以有效地抑制高温下的射频噪声防止性能的恶化。 电阻体组合物含有电阻温度系数为正值或绝对值相对较小的负值的半导体陶瓷粒子（例如，具有金红石型结晶结构的TiO 2粒子，碱土类金属元素的钛酸酯或锆酸酯，钛 低氧化物等）或钛金属。 因此，本发明提供了一种结合电阻器的火花塞，其即使在高负载时也能够提供稳定的负载寿命特性，即使在高温下也不太可能降低射频噪声防止性能。
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公开(公告)号：US06771009B2
公开(公告)日：2004-08-03
申请号：US09964892
申请日：2001-09-28
IPC分类号： H01T1300
摘要： A resistor-containing spark plug 100 has an alumina insulator 2 coated with a glaze layer 2d, the glaze layer 2d has a lead component content of 1 mol % or lower in terms of PbO and containing a silicon component, a boron component, a zinc and/or alkaline earth metal component, and an alkali metal component. The insulator has, in an axially central position thereof, a projection part protruding from the outer circumferential surface thereof and extending in a circumferential direction. That main body of the insulator which is located adjacent to the projection part on the rear side thereof, which is the side opposite to the front side facing the center electrode in the axial direction, has a base portion having a cylindrical outer circumference. The outer circumference of the base portion is covered with the glaze layer which, when examined by the method as provided for in JIS B 0601, gives a surface roughness curve having a maximum height Ry of 10 &mgr;m or smaller.
摘要翻译： 含电阻的火花塞100具有涂覆有釉层2d的氧化铝绝缘体2，釉层2d的铅成分含量按PbO计为1摩尔％以下，含有硅成分，硼成分，锌 和/或碱土金属组分和碱金属组分。 绝缘体在其轴向中心位置处具有从其外周面突出并沿圆周方向延伸的突出部。 位于其后侧的与前侧面相对的与轴向中心电极相反一侧的突出部相邻的绝缘体的主体具有圆筒状的外周的基部。 基部的外周被覆有釉层，当通过JIS B 0601中规定的方法进行检查时，得到最大高度Ry为10μm以下的表面粗糙度曲线。
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公开(公告)号：US5508582A
公开(公告)日：1996-04-16
申请号：US231836
申请日：1994-04-25
CPC分类号： H01T13/38
摘要： In a spark plug insulator for use in an internal combustion engine, a sintered body has boron nitride and a metal oxide, the boron nitride of the sintered body being 80% or greater by weight, and the sintered body having a thermal expansion coefficient of less than 5.0.times.10-.sup.6 /.degree.C. The metal oxide is selected alone or in combination from the group consisting of magnesium oxide, calcium oxide, silicon oxide, boron oxide, yttrium oxide and aluminum oxide.
摘要翻译： 在用于内燃机的火花塞绝缘子中，烧结体具有氮化硼和金属氧化物，烧结体的氮化硼为80重量％以上，烧结体的热膨胀系数为 5.0×10 -6 /℃以下。金属氧化物单独选择或由氧化镁，氧化钙，氧化硅，氧化硼，氧化钇和氧化铝组成的组中选择。
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公开(公告)号：US5859491A
公开(公告)日：1999-01-12
申请号：US783115
申请日：1997-01-14
申请人： Kenichi Nishikawa , Makoto Sugimoto
发明人： Kenichi Nishikawa , Makoto Sugimoto
CPC分类号： H01T13/38
摘要： A spark plug for an internal combustion engine. The spark plug includes an insulator coated with glaze in an area extending from a head portion to a trunk portion of the insulator. Preferably, the glaze is prepared from B.sub.2 O.sub.3 --SiO.sub.2 glass containing two or more oxides selected from the group consisting of Al.sub.2 O.sub.3, Na.sub.2 O, CaO, ZnO, BaO, Li.sub.2 O and Bi.sub.2 O.sub.3. The glaze is prepared by dry-mixing a plurality of powder materials, melting the resultant mixture in water for vitrification, wet-powdering the resultant vitrification, and adding an organic binder to the resultant powder. The glaze is applied to the insulater and fired at a glost temperature of not more than 1150.degree. C. The Pb content of the glaze is not more than 10 wt. % in terms of PbO. Accordingly, even when a strong electric field is induced at the trunk portion of the insulator, the conversion of Pb to conductive substances is very little or zero. As a result, the flashover voltage between the terminal electrode and the metallic shell of the spark plug is less likely to decrease, thus preventing a spark failure of the spark plug.
摘要翻译： 一种用于内燃机的火花塞。 火花塞包括在从绝缘体的头部到主体部分延伸的区域中涂覆有釉料的绝缘体。 优选地，由含有选自Al 2 O 3，Na 2 O，CaO，ZnO，BaO，Li 2 O和Bi 2 O 3中的两种或更多种氧化物的B2O3-SiO2玻璃制备釉料。 通过将多种粉末材料干混，将所得混合物在水中熔化以进行玻璃化，湿法粉碎所得到的玻璃化，并向所得粉末中加入有机粘合剂来制备釉料。 将釉料施加到绝缘体上并在不超过1150℃的烧成温度下烧制。釉料的Pb含量不超过10重量％。 以PbO计。 因此，即使在绝缘体的主干部分处产生强电场，Pb与导电物质的转化也非常小或为零。 结果，端子电极和火花塞的金属壳之间的闪络电压不太可能降低，从而防止火花塞的火花发生故障。
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公开(公告)号：US5565157A
公开(公告)日：1996-10-15
申请号：US455307
申请日：1995-05-31
CPC分类号： H01T13/38
摘要： In a spark plug insulator for use in an internal combustion engine, a sintered body has boron nitride and a metal oxide, the boron nitride of the sintered body being 80% or exceeding 80% by weight, and the sintered body having a thermal expansion coefficient of less than 5.0.times.10-.sup.6 /.degree.C. The metal oxide is selected alone or combination from the group consisting of magnesium oxide, calcium oxide, silicon oxide, boron oxide, yttrium oxide and aluminum oxide.
摘要翻译： 在用于内燃机的火花塞绝缘体中，烧结体具有氮化硼和金属氧化物，烧结体的氮化硼为80重量％以上，超过80重量％，烧结体的热膨胀系数 小于5.0×10 -6 /℃。金属氧化物单独选择或由氧化镁，氧化钙，氧化硅，氧化硼，氧化钇和氧化铝组成的组中选择。
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