Cummins Inc.
SPARK PLUG CONFIGURATIONS FOR A COMBUSTION PRE-CHAMBER OF AN INTERNAL COMBUSTION ENGINE

Abstract:

Spark plugs are disclosed that include electrode arrangements to improve the charge flow into and out of the annular volume around the insulator nose and a pre-chamber volume of a pre-chamber device, thus directing a purge of exhaust gases trapped in the annular volume to a space formed by the exterior of the spark plug body and the interior of the pre-chamber device.