Spark plug with grooved, tapered center electrode

Details Spark plug with grooved, tapered center electrode Spark plug with grooved, tapered center electrode

1996-03-15

1998-10-13

Powell, Mark R.

Electric lamp and discharge devices

Spark plugs

Plural parallel gaps

313141, H01T 1320

Patent

active

058216766

ABSTRACT:
The invention includes a spark plug for a combustion engine including a center electrode having a tapered portion with a plurality of ridges formed thereon. The spark plug may also include a tapered, ground electrode positioned over the center of the center electrode. The tapered center and ground electrodes allow for flames to propagate freely from the spark gap into the combustion chamber and to ignite an air-fuel mixture in the chamber leading to smooth idle and faster starts.

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S. Pischinger, et al., "How Heat Losses to the Spark Plug Electrodes Affect Flame Kernel Development in an SI-Engine", SAE Paper No. 900021 (1990).

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