S: (n) ignition coil (an induction coil that converts current from a battery into the high-voltage current required by spark plugs)
S: (n) ignition switch (switch that operates a solenoid that closes a circuit to operate the starter)
S: (n) magneto, magnetoelectric machine (a small dynamo with a secondary winding that produces a high voltage enabling a spark to jump between the poles of a spark plug in a gasoline engine)
S: (n) spark gap (a component of an ignition system; consists of two shaped electrodes and the space between them)
S: (n) spark plug, sparking plug, plug (electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark)