F - Mech Eng,Light,Heat,Weapons – 02 – P
Patent
F - Mech Eng,Light,Heat,Weapons
02
P
123/214
F02P 15/00 (2006.01) H01T 13/46 (2006.01)
Patent
CA 1037804
MULTIPLE AIR GAP SPARK PLUG HAVING RESISTIVE ELECTRODE COUPLING ABSTRACT OF THE DISCLOSURE A spark plug having multiple air gaps is described. The multiple gaps are defined by at least three electrode members defining at least two air gaps. A first electrode member is communicated to a ground potential while a second electrode member, the electrode member which is maximally spaced apart from the first electrode member, is communicated to a source of high voltage potential. The remaining electrode members are positioned intermediate the first and second electrode members and are arranged to be coupled by high resistance electrical means to either the ground or the high voltage potential. In a preferred embodiment, the high resistance means comprise a ladder type resistance network embedded within the ceramic body of the spark plug and electrically interconnecting the intermediate electrode members and the electrical connecting cap of the spark plug device. The air gaps so formed are broken down in sequence and share in the dissipation of the stored energy. The electrodes are arranged so that the air gaps extend away from the spark generating device.
237057
Rado William G.
Turner Allen H.
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