Patent ID: 7819109

Claim:
An ignition apparatus for a spark-ignition internal combustion engine, the apparatus comprising: a spark plug including a plug end; a transformer coil that supplies a high voltage electric current to the spark plug; a high tension ignition cable that connects the transformer coil to the spark plug, the high tension ignition cable having a conductor core formed with a non-metallic conducting material in a form of a plurality of elongated fibers of carbon fiber or graphite fiber, the high tension ignition cable having a resistance per unit length of less than 7 kΩ/m, the conductor core forming a single layer disposed at innermost of the high tension ignition cable; and a high frequency noise suppression mechanism that suppresses a high frequency noise associated with a high voltage electric current in the high tension ignition cable transmitted between the transformer coil and the spark plug without changing a resistance of the conductor core.