Copper core combustion cup for pre-chamber spark plug

摘要

A spark plug for an internal combustion engine includes a spark plug housing. An insulator is concentrically located within the housing and has a distal end extending from an outer surface of the housing. A center electrode extends from a proximal end of the insulator. A ground electrode is secured to the housing and has an electrode tip arranged a distance from the center electrode. A chamber cap fixedly secured to the housing and surrounding both the center and ground electrodes, includes a laminate shell and a plurality of orifices.

主权项

1. A spark plug for an internal combustion engine, the spark plug comprising:
a spark plug housing; an insulator concentrically located within the housing and having a distal end extending from an outer surface of the housing; a center electrode extending from a proximal end of the insulator; a ground electrode secured to the housing and having an electrode tip arranged a distance from the center electrode; and a chamber cap fixedly secured to the housing and surrounding both the center and ground electrodes, the chamber cap including a laminate shell having a plurality of orifices; wherein the housing includes a plurality of mounting threads; a weld fixedly secures the chamber cap to the housing; and the weld extends circumferentially around the chamber cap at a position spaced from a position where the chamber cap directly contacts the housing.