| 摘要 |
<p>The specification describes an igniter plug of the type having an inner elongated electrode having a front portion and a rear portion; an intermediate elongated insulator disposed around at least a portion of the electrode, the insulator having a front portion, a rear portion and an axial passage extending through the insulator; an outer elongated metal shell disposed around the electrode and electrically isolated therefrom by the insulator, the metal shell having a rear portion and a front end portion which is arranged to provide a spark gap with the end of the front portion of the electrode; means for providing a pressure tight seal between the inner electrode, the elongated insulator and the metal shell. The plug also includes a forward insulator which electrically isolates the forward portion of the outer shell from the forward portion of the electrode and means for connecting the forward insulator to the outer shell characterized by a metal ring welded to the outer shell and brazed to the forward insulator.</p> |
