公开(公告)号：EP3300193A1

公开(公告)日：2018-03-28

申请号：EP17197755.6

申请日：2014-05-02

申请人： Federal-Mogul Ignition Company

发明人： DURHAM, Mr. Patrick ,  LYKOWSKI, Mr. James D.

IPC分类号： H01T13/36 ,  H01T13/50 ,  H01T21/02

摘要： A corona igniter (20) comprises a central electrode (22) surrounded by an insulator (24), which is surrounded by a metal shell (26). A ceramic combustion seal (30) is disposed along the gap (32) between a shell lower end shell (52) and the insulator nose region (48) to provide a hermetic seal therebetween. The ceramic combustion seal (30) is typically a bushing, cylinder, or ring formed of sintered alumina. A glass material or glass/ceramic mixture (60) typically adheres the ceramic combustion seal (30) to the shell (26) and the insulator (24). Alternatively, the ceramic combustion seal (30) is brazed to the shell (26), and the glass material or glass/ceramic mixture (60) adheres the ceramic combustion seal (30) to the insulator (24). Said shell (26) includes a shell inner surface (56) facing said insulator (24) and presenting a shell inner diameter (D s ) extending across and perpendicular to said center axis (A); said shell inner diameter (D i ) increases adjacent said shell lower end (52); and said ceramic combustion seal (30) is disposed in said gap (32) along said increased shell inner diameter (D s ) adjacent said shell lower end (52).

摘要翻译： 电晕点火器（20）包括由绝缘体（24）围绕的中心电极（22），中心电极由金属壳（26）围绕。 陶瓷燃烧密封件（30）沿壳体下端壳体（52）和绝缘子鼻部区域（48）之间的间隙（32）设置，以在其间提供气密密封。 陶瓷燃烧密封件（30）通常是由烧结氧化铝形成的衬套，圆柱体或环。 玻璃材料或玻璃/陶瓷混合物（60）通常将陶瓷燃烧密封件（30）粘附到壳体（26）和绝缘体（24）。 或者，将陶瓷燃烧密封件（30）钎焊到壳体（26）上，并且玻璃材料或玻璃/陶瓷混合物（60）将陶瓷燃烧密封件（30）粘附到绝缘体（24）。 所述壳体（26）包括面对所述绝缘体（24）的壳体内表面（56）并且具有延伸跨过并垂直于所述中心轴线（A）的壳体内径（Ds）; 所述壳体内径（Di）在所述壳体下端（52）附近增加; 并且所述陶瓷燃烧密封件（30）沿着邻近所述壳体下端（52）的所述增加的壳体内径（Ds）设置在所述间隙（32）中。