公开(公告)号：US20110221327A1

公开(公告)日：2011-09-15

申请号：US13038442

申请日：2011-03-02

申请人： Hiroyuki Kameda ,  Yoshikuni Sato ,  Daisuke Nakano ,  Naofumi Yamamura ,  Daisuke Kasahara

发明人： Hiroyuki Kameda ,  Yoshikuni Sato ,  Daisuke Nakano ,  Naofumi Yamamura ,  Daisuke Kasahara

IPC分类号： H01T13/20

CPC分类号： H01T13/50 ,  H01T13/20

摘要： A plasma jet ignition plug including an insulator having an axial hole extending therethrough in the direction of an axis CL1, a center electrode inserted into the axial hole, and a ground electrode disposed frontward of the front end of the insulator. The insulator has a cavity defined by the wall surface of the axial hole and the front end surface of the center electrode and opens frontward. The ground electrode has a through hole for establishing communication between the cavity and an ambient atmosphere. A front end portion of the center electrode is formed into a taper portion whose diameter reduces frontward in the direction of the axis CL1. The outside diameter of a front end of the taper portion is smaller than the diameter of the through hole. The cavity has a substantially constant diameter with respect to the direction of the axis CL1.

摘要翻译： 一种等离子体火花塞，包括具有沿轴线CL1的方向延伸穿过的轴向孔的绝缘体，插入到轴向孔中的中心电极和设置在绝缘体前端的接地电极。 绝缘体具有由轴孔的壁面和中心电极的前端面形成的空腔，向前开口。 接地电极具有用于在空腔和周围环境之间建立连通的通孔。 中心电极的前端部形成为直径在轴线CL1的方向上向前减小的锥形部。 锥形部分的前端的外径小于通孔的直径。 空腔相对于轴线CL1的方向具有基本上恒定的直径。