Spark plug

A spark plug (sometimes, in British English, a sparking plug, and, colloquially, a plug) is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark, while containing combustion pressure within the engine. A spark plug has a metal threaded shell, electrically isolated from a central electrode by a porcelain insulator. The central electrode, which may contain a resistor, is connected by a heavily insulated wire to the output terminal of an ignition coil or magneto. The spark plug's metal shell is screwed into the engine's cylinder head and thus electrically grounded. The central electrode protrudes through the porcelain insulator into the combustion chamber, forming one or more spark gaps between the inner end of the central electrode and usually one or more protuberances or structures attached to the inner end of the threaded shell and designated the side, earth, or ground electrode(s).

Spark plug (disambiguation)

Spark plug may refer to:

Sparkplug may also refer to:

Spark Plug (album)

Spark Plug is the second album by soul jazz guitarist Melvin Sparks which was recorded for the Prestige label in 1971.

Reception

The Allmusic site awarded the album 3 stars stating "It's more relaxed, funky, occasionally bluesy jazz with guitar and organ to the fore, very much of a piece with the Prestige soul-jazz "house" sound circa 1970".

Track listing

All compositions by Melvin Sparks except as indicated

Personnel

Production