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公开(公告)号：EP1341282A3
公开(公告)日：2008-03-26
申请号：EP03004316.0
申请日：2003-02-27
IPC分类号： H01T21/02
CPC分类号： H01T21/02 , Y10T29/5193 , Y10T29/5195
摘要： Provided is a method of making a spark plug (100) having a noble metal chip (32) joined to an electrode main body (4m) of a ground electrode (4) by interposing therebetween an intermediate member (33). The method comprises the steps of prior to joining the noble metal chip (32) to the electrode main body (4m), joining the intermediate member (4m) and the noble metal chip (32) together, placing a noble metal chip and intermediate member assembly (34) on the electrode main body (4m) in a way as to allow the intermediate member (33) to contact the electrode main body (4m), and welding the electrode main body (4m) and the intermediate member (33) together while restricting relative movement of the electrode main body, (4m) and the intermediate member (33) without applying an urging force to a joint between the intermediate member (33) and the noble metal chip (32).
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公开(公告)号：EP1102373A2
公开(公告)日：2001-05-23
申请号：EP00310115.1
申请日：2000-11-14
CPC分类号： H01T13/20 , H01T13/467
摘要： A spark plug includes a metallic shell (5) having a stepped portion (5c); an insulator (3) disposed inside the metallic shell (5), while being engaged with the stepped portion (5c) of the metallic shell (5), and having an axially extending through-hole (3d); a center electrode (2) fixed within the through-hole (3d) of the insulator (3); and a ground electrode (4) having a tip end portion (4a) bent toward the center electrode (2) to thereby form a spark discharge gap (g). The insulator (3) is formed such that the outer diameter of the insulator (3) decreases toward the tip end side from an engagement position at which the insulator (3) engages the stepped portion (5c) and such that the diameter decreases stepwise at an axial position between the engagement position and the tip end of the insulator (3). The diameter reduction ratio Y1 = D1/d1 is 0.6 or less in a region of at least 2 mm extending from the tip end surface (3b) of the insulator (3) toward the base end side, wherein D1 represents the outer diameter of the insulator (3) measured at an arbitrarily determined axial position, and d1 represents the inner diameter of the tip end portion (5a) of the metallic shell (5). Further, a clearance ratio Y2 = (d1-D1)/d1 is 0.4 or greater in a region of at least 1 mm extending from the tip end surface (5b) of the metallic shell (5) toward the base end side.
摘要翻译： 火花塞包括具有台阶部分（5c）的金属壳（5）; （5）内的绝缘体（3），与主体配件（5）的台阶部（5c）卡合并具有沿轴向贯通的贯通孔（3d）的绝缘体（3）。 固定在绝缘体（3）的通孔（3d）内的中心电极（2）; 以及具有朝向中心电极（2）弯曲的前端部（4a）从而形成火花放电间隙（g）的接地电极（4）。 绝缘体（3）形成为使得绝缘体（3）的外径从绝缘体（3）与台阶部分（5c）接合的接合位置朝向末端侧减小并且使得直径在 在接合位置与绝缘体（3）的末端之间的轴向位置。 在从绝缘体（3）的前端面（3b）朝向基端侧延伸的至少2mm的范围内，缩径比Y1 = D1 / d1为0.6以下，其中D1表示 在任意确定的轴向位置测定绝缘体（3），d1表示金属壳（5）的前端部（5a）的内径。 另外，在从主体配件（5）的前端面（5b）向基端侧延伸的至少1mm的范围内，间隙比Y2 =（d1-D1）/ d1为0.4以上。
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公开(公告)号：EP0989645A2
公开(公告)日：2000-03-29
申请号：EP99307571.2
申请日：1999-09-24
发明人： Matsubara, Yoshihiro
IPC分类号： H01T13/20
CPC分类号： H01T13/20
摘要： The shortest distance (F, F') from an end face (11A) of each ground electrode (11, 11') to a porcelain insulator (1) is made smaller than the shortest distance (G, G') from the end face (11A) of each ground electrode (11, 11') to the peripheral side surface of a central electrode (2, 2'). An anti-spark consumption member (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32) is secured to a portion of the central electrode (2, 2') in such a way that it is spaced at least a specified distance (H) of from the end face of the porcelain insulator (1).
摘要翻译： 从每个接地电极（11,11'）的端面（11A）到瓷绝缘体（1）的最短距离（F，F'）小于距端面的最短距离（G，G'） （11,11'）的中心电极（2,2'）的外周侧表面（11A）接触。 以这种方式将防火花消耗构件（21,22,23,24,25,26,27,28,29,30,31,32）固定到中心电极（2,2'）的一部分上 它与瓷绝缘子（1）的端面间隔至少一个特定距离（H）。
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公开(公告)号：EP0872927A2
公开(公告)日：1998-10-21
申请号：EP98302927.3
申请日：1998-04-15
IPC分类号： H01T13/20
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 (11) 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 said 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).
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公开(公告)号：EP0717190A3
公开(公告)日：1996-08-14
申请号：EP95301811.6
申请日：1995-03-17
CPC分类号： F02P17/12 , F02P5/152 , F02P17/04 , F02P2017/125 , F02P2017/128
摘要： In a device for evaluating heat resistivity of a spark plug, an ignition spark control circuit is provided to miss out an ignition spark across the electrodes of a spark plug mounted on an internal combustion engine at predetermined intervals. A counter circuit is provided to count the number of times the ignition spark is suppressed by the ignition spark control circuit. A self-ignition detection circuit is provided to detect self-ignition caused by a hot-spot on the spark plug when the ignition spark is suppressed by the ignition spark control circuit. A self-ignition counter circuit is provided to count the number of self-ignitions detected by the self-ignition detection circuit. A calculation circuit is provided to calculate the occurrence rate of self-ignition from the spark plug on the basis of the number of suppressed ignition sparks counted by the counter circuit and the number of detected self-ignitions counted by the self-ignition counter circuit. A self-ignition timing detection circuit is provided to detect the engine timing at which self-ignition is detected by the self-ignition detection circuit. A preignition timing prediction circuit is provided to predict an ignition timing when preignition of the internal combustion engine would occur on the basis of the occurrence rate of self-ignition determined by the calculation circuit and on the timing of the self-ignition detected by the self-ignition timing detection circuit.
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公开(公告)号：EP0513996B1
公开(公告)日：1995-12-06
申请号：EP92303200.7
申请日：1992-04-10
发明人： Miyata, Shigeru , Suzuki, Takashi , Matsubara, Yoshihiro , Shimasaki, Yuuichi , Hisaki, Takashi
CPC分类号： F02P17/12 , F02P2017/006 , F02P2017/123 , F02P2017/125
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28.发明授权A detector device for mixing ratio for petrol and alcohol or the like 失效用于混合比例用于PETROL和酒精或类似物的检测器装置
公开(公告)号：EP0281337B1
公开(公告)日：1993-07-21
申请号：EP88301710.5
申请日：1988-02-26
CPC分类号： G01N21/43 , G01J2001/1636 , G01J2001/444 , G01N21/85 , G01N2201/0621
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29.发明公开A detector device for mixing ratio for petrol and alcohol or the like 失效Gerätzur Bestimmung vomMischungsverhältnisvon Benzin und Alkohol oderähnlichem。
公开(公告)号：EP0281337A2
公开(公告)日：1988-09-07
申请号：EP88301710.5
申请日：1988-02-26
CPC分类号： G01N21/43 , G01J2001/1636 , G01J2001/444 , G01N21/85 , G01N2201/0621
摘要： A detector device for mixing ratio of petrol and alcohol or the like comprising; an optically permeable column (3), one end of which has a specular layer (La), and projects to be immersed the outer surface with a mixing liquid of different kinds of components; a light emitting diode (5) placed to face the other end of the optically permeable column so that the light beams therefrom are incident on a boundary (Bo) between the optically permeable column and the mixing liquid, the light beams incident on the boundary at less than a critical angle being totally refracted, while the light beams incident on the boundary at more than a critical angle being totally reflected, the critical angle depending on a mixing degree of the mixing liquid; a photo diode (6) placed on the base plate in coplanar relationship with the light emitting diode so as to receive the light beams reflected at the boundary, or at the specular layer to go back through the column to fall thereon so as to generate an output in accordance with the light intensity received; and the column determining its lengthwise dimension and a radial dimension measured from a point of the light emitting diode to be such as to only include light beams extending from the one which is incident on the boundary at a critical angle to totally reflect only once and reflect back at the specular layer so as to directly fall on the photo diode when one component of the mixing liquid is one specified value, to other light beams which is incident on the boundary at a critical angle to totally reflect only once and reflect back at the specular layer so as to directly fall on the photo diode when the one component of the mixing liquid is other specified value.
摘要翻译： 用于汽油和醇等的混合比的检测器装置，包括： 一个光学透视柱（3），其一端具有镜面层（La），并用不同种类的组分的混合液体将外表面浸入其中; 发光二极管（5），其放置成面对光学透光柱的另一端，使得其光束入射在光学透视柱和混合液体之间的边界（Bo）上，光束入射在边界上 小于临界角完全折射，而以超过临界角入射在边界上的光束被全反射，临界角取决于混合液的混合度; 光电二极管（6），与发光二极管共面放置在基板上，以便接收在边界处反射的光束，或者在镜面反射层返回通过色谱柱落下，从而产生 按照接收到的光强度输出; 并且确定其长度尺寸的列和从发光二极管的点测量的径向尺寸将仅包括从以临界角入射在边界上的光束延伸的光束仅完全反射一次并且反射 返回到镜面层，以便当混合液体的一个分量是一个特定值时直接落在光电二极管上，以临界角入射到边界上的其他光束仅完全反射一次并反射回到 镜面层，以便当混合液体的一个组分是其它指定值时直接落在光电二极管上。
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公开(公告)号：EP0989645B1
公开(公告)日：2004-11-17
申请号：EP99307571.2
申请日：1999-09-24
发明人： Matsubara, Yoshihiro
CPC分类号： H01T13/20
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