Spark plug having multiple point firing points

A spark plug is provided including a housing, a center electrode and an outer electrode. The center electrode has a firing tip extending out from the housing. The outer electrode has an annular surface surrounding the center electrode. The annular surface is formed with a toroid shape. The crest of...

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Bibliographic Details
Main Authors MUCKERHEIDE MYRON, SCHREINER SUSAN K, HORN JOSEPH B
Format Patent
LanguageEnglish
Published 08.09.2005
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
BLASTING
COMBUSTION ENGINES
CORONA DEVICES
ELECTRICITY
GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
OVERVOLTAGE ARRESTERS USING SPARK GAPS
SPARK GAPS
SPARKING PLUGS
SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF
WEAPONS
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Summary:A spark plug is provided including a housing, a center electrode and an outer electrode. The center electrode has a firing tip extending out from the housing. The outer electrode has an annular surface surrounding the center electrode. The annular surface is formed with a toroid shape. The crest of the toroid shape is arranged to face towards the center electrode. The annular surface and the firing tip of the center electrode define a gap to convey a spark. The gap is defined at least in a plane substantially perpendicular to a center axis of the spark plug. In another embodiment of the invention, the outer electrode can include an end portion having a planar surface with a circular shape and an aperture defining an annular surface surrounding the center electrode.
Bibliography:Application Number: US20040793156