The pre- chamber housing which the production methodological pre- chamber of the pre- chamber sparkplug and

摘要

PROBLEM TO BE SOLVED: To provide a precombustion chamber spark plug that achieves rapid and repeatable flame propagation.;SOLUTION: The precombustion chamber spark plug includes: a shell 112; an end cap 116 attached to the shell; an insulator 104 disposed within the shell; a center electrode 102 having a first portion surrounded by the insulator and having a second portion extending from the insulator into a pre-chamber defined by the shell and end cap; and a ground electrode 110 attached to the shell. The ground electrode includes: a tubular inner ring spaced in surrounding relation to the center electrode; an outer ring attached to the shell; and a plurality of spokes connecting the inner and outer rings.;COPYRIGHT: (C)2012,JPO&INPIT