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公开(公告)号：US20190229502A1
公开(公告)日：2019-07-25
申请号：US16337514
申请日：2017-09-27
摘要： In order to test a semiconductor spark plug, a test method comprises a step consisting of depositing water on the head of the spark plug, between the two electrodes of same, so that the water forms a water meniscus covering the semiconductor element of the head, a step consisting of applying, between the first terminal and the second terminal of the spark plug, a voltage equal to the operating voltage of the spark plug, a step consisting of identifying at least a first characteristic of electric arcs induced between the electrodes during the application of the voltage, and a step consisting of determining the operational or defective character of the spark plug according to the first characteristic of the electric arcs. This test method is particularly reliable and does not require constraining provisions in order to ensure the safety of the operators implementing the method.
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公开(公告)号：US10109985B2
公开(公告)日：2018-10-23
申请号：US14609533
申请日：2015-01-30
发明人： Joel Yvan Marcel Robert Berton , Sebastien Alain Christophe Bourgois , Jean-Michel Jacques Campion
摘要： An igniter plug for an aircraft turbomachine includes an external electrode, an internal electrode, as well as a semiconducting body arranged between the external electrode and the internal electrode and set back from these electrodes so as to define an electrical arc forming cavity, the bottom of which is formed by an axial end surface of the semiconducting body. The free end of the external electrode is equipped with at least one scoop for discharging possible fuel residues present in the cavity.
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公开(公告)号：US09478947B2
公开(公告)日：2016-10-25
申请号：US14811160
申请日：2015-07-28
摘要： A plasma jet plug has a cavity defined by a surface of a center electrode, an inner surface of an insulator, and a surface of a ground electrode. When a volume of a portion of the cavity on a front side of a front portion of the center electrode is a first volume V1 and a volume of a portion of the cavity on a rear side of the front end of the center electrode is a second volume V2, the following expression is satisfied: V1/V2≧0.20.
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公开(公告)号：US09236716B2
公开(公告)日：2016-01-12
申请号：US14552855
申请日：2014-11-25
发明人： Hironobu Mizutani , Kei Takahashi
摘要： An ignition plug having a center electrode, a grounding electrode, an insulator, and a metal shell. The center electrode is held by the insulator, and the insulator is held by metal shell. A cavity is formed between the grounding electrode and the center electrode. The grounding electrode is joined to the inner wall surface of the metal shell via a melting portion. In the melting portion, in a predetermined cutting surface MS including a melting deepest point DP and a central axis CX, a percentage ratio MDD of a melting depth MD of the melting portion with respect to a thickness of the grounding electrode is 5% or more, and an area Sm of a portion included in an outer circumferential side of the metal shell is 10% or more of the entire area S.
摘要翻译： 具有中心电极，接地电极，绝缘体和金属壳的火花塞。 中心电极由绝缘体保持，绝缘体由金属壳保持。 在接地电极和中心电极之间形成空腔。 接地电极通过熔化部分与金属壳体的内壁表面接合。 在熔融部分中，在包括熔融深度点DP和中心轴线CX的预定切割表面MS中，熔化部分的熔化深度MD相对于接地电极的厚度的百分比MDD为5％以上 金属壳的外周侧的部分的面积Sm为整个面积S的10％以上。
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公开(公告)号：US09065256B2
公开(公告)日：2015-06-23
申请号：US13879212
申请日：2011-10-06
申请人： Maxime Makarov , Marc Pariente
发明人： Maxime Makarov , Marc Pariente
摘要： A spark plug including: a central electrode including an upper end and a lower end; an insulating part including an upper portion and a lower portion and surrounds the central electrode so that the lower end of the central electrode extends beyond the lower portion of the insulating part; and a cap including an upper portion and a lower portion that has an end section and that surrounds the insulating part so that the lower portion of the insulating part extends beyond the lower portion of the cap. The insulating part includes an annular groove, on the external periphery thereof, on the lower end of the cap, and the lower end section of the cap is placed in the groove.
摘要翻译： 一种火花塞，包括：中心电极，包括上端和下端; 绝缘部分，包括上部和下部，并且围绕中心电极，使得中心电极的下端延伸超过绝缘部分的下部; 以及包括具有端部并且围绕绝缘部分的上部和下部的盖，使得绝缘部分的下部延伸超过盖的下部。 绝缘部包括位于盖的下端的外周的环状槽，盖的下端部配置在槽内。
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6.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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公开(公告)号：US6064143A
公开(公告)日：2000-05-16
申请号：US749309
申请日：1996-11-14
申请人： Junichi Kagawa
发明人： Junichi Kagawa
摘要： In order to provide a multielectrode spark plug which is excellent in resistance to fouling and in which the voltage required for producing a spark can be lowered, the tip portion of at least one of plural ground electrodes is positioned by the side of an annular front end face of an insulator to form a semi-creeping spark discharging gap elongating along the surface of the insulator with the tip portion of a center electrode, and the tip portions of the ground other electrodes form aerial spark discharging gaps with the tip portion of the center electrode.
摘要翻译： 为了提供耐污垢性优异并且可以降低产生火花所需的电压的多电极火花塞，多个接地电极中的至少一个的前端部分位于环形前端侧 形成绝缘体的表面，以形成沿中心电极的前端部沿着绝缘体的表面延伸的半蠕变火花放电间隙，并且接地的其他电极的尖端部分与中心的尖端部分形成架空火花放电间隙 电极。
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8.发明授权Low-voltage type igniter plug having a semiconductor for use in jet and other internal combustion engines and a method of making the semiconductor 失效具有用于喷射和其它内燃机的半导体的低压型点火器插头和制造该半导体的方法
公开(公告)号：US5852340A
公开(公告)日：1998-12-22
申请号：US665874
申请日：1996-06-19
申请人： Yukihiko Ito , Eigo Goto
发明人： Yukihiko Ito , Eigo Goto
CPC分类号： C04B35/575 , H01T13/52
摘要： An igniter plug is disclosed for use in jet and other internal combustion engines. The igniter plug has a center electrode having a firing tip, which is mounted within an insulator which in turn is mounted within an exterior metal shell. A ground electrode is integral with or in electrical contact relationship with the metal shell and is disposed in a spaced, spark gap relation with the firing tip of the center electrode. An electrically semiconducting surface is disposed adjacent the spark gap and in electrical contact with the center electrode and with the ground electrode. The electrically semiconducting surface is formed by a sintered ceramic body having an actual density of more than 95 percent of its theoretical maximum density, and consists essentially of 67-80 wt % of silicon carbide particles and 20-33 percent by weight of grain boundary phase of alumina particles, as well as one or more sintering aids selected from magnesia, silica or calcia. Not only is the density of the sintered ceramic body high, it is uniform. This uniform density provides for uniform electrical characteristics and increased resistance to erosion due to electrical discharges between the electrodes. The high and uniform density of the sintered ceramic body is obtained by applying pressure to the ceramic body only after reaching the sintering temperature.
摘要翻译： 公开了用于喷气式和其它内燃机的点火塞。 点火塞具有具有点火尖端的中心电极，该中心电极安装在绝缘体内，绝缘体又安装在外部金属外壳内。 接地电极与金属外壳成一体或与电接触的关系，并与中心电极的点火尖端间隔开，火花隙关系。 电气半导体表面设置在火花隙附近并与中心电极和接地电极电接触。 电半导体表面由实际密度超过其理论最大密度的95％的烧结陶瓷体形成，并且基本上由67-80重量％的碳化硅颗粒和20-33重量％的晶界相组成 的氧化铝颗粒，以及一种或多种选自氧化镁，二氧化硅或氧化钙的烧结助剂。 不仅烧结陶瓷体的密度高，均匀。 这种均匀的密度提供了均匀的电气特性，并且由于电极之间的放电而增加了对侵蚀的抵抗力。 通过在达到烧结温度后对陶瓷体施加压力来获得烧结陶瓷体的高且均匀的密度。
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9.发明授权Semi-conductive ceramic composition and its use in the manufacture of spark plugs 失效半导体陶瓷组合物及其在制造火花塞中的应用
公开(公告)号：US4999137A
公开(公告)日：1991-03-12
申请号：US432879
申请日：1989-11-07
申请人： Simone Wapler , Patrick Balland
发明人： Simone Wapler , Patrick Balland
IPC分类号： C04B35/563 , C04B35/565 , H01T13/52
CPC分类号： H01T13/52 , C04B35/563 , C04B35/565
摘要： The semi-conductive ceramic composition is obtained according to the invention from (a) a basic composition containing 40 to 80% by weight of a semi-conductor which is a silicon or boron carbide, 5 to 40% by weight of a binder or of a mixture of binders chosen from aluminum oxide, beryllium oxide, zirconium oxide, magnesium oxide, silica and silicon nitride, and 0 to 40% of a flux of a mixture of fluxes chosen from alkaline-earth carbonates and oxides, rare earth oxides and metal silicates, and (b) 5 to 40% by weight, relative to the basic composition (a), of a heat-emitting dope chosen from titanium, barium titanate, tungsten and lanthanum boride.
摘要翻译： 根据本发明，半导电陶瓷组合物由（a）含有40-80％重量半导体的碱性组合物得到，该半导体是硅或碳化硼，5-40％重量的粘合剂或 选自氧化铝，氧化铍，氧化锆，氧化硅，二氧化硅和氮化硅的粘合剂的混合物，以及选自碱土金属碳酸盐和氧化物，稀土氧化物和金属的0〜40％的助熔剂的混合物 硅酸盐，和（b）相对于碱性组合物（a）为5〜40重量％的选自钛，钛酸钡，钨和硼化镧的发光涂料。
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公开(公告)号：US4952837A
公开(公告)日：1990-08-28
申请号：US313744
申请日：1989-02-22
申请人： Shuzo Matsumura , Takahiro Suzuki
发明人： Shuzo Matsumura , Takahiro Suzuki
CPC分类号： H01T13/04
摘要： A surface gap type igniter plug comprising; a cylindrical metallic shell; a tubular insulator inserted into said metallic shell with a rear end projected from that of the insulator; a center electrode disposed to position at an innerside of the insulator, the electrode making its rear end of the insulator; a sleeve terminal located between an outerside of the electrode and an innerside of the insulator, the terminal being secured at a rear end to the center electrode by means of welding; a connector having an insulator sleeve interfit into an innerside of a metallic sleeve, the insulator sleeve being terminated short of a front end of the metallic sleeve; and the connector being securely capped to the metallic shell at a time of assemblage with the rear end of the tubular insulator interfit into an innerside of the insulator sleeve, and with the metallic shell interfit into an innerside of the metallic sleeve.
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