Abstract: An ignition system comprises an ignition coil assembly (100) that supplies a high voltage electric current to a resistor-type spark plug (20). The ignition coil assembly (100) includes an ignition coil (140), a high voltage coil terminal (120), a terminals connecting insert (30) and an insulator (40). The terminals connecting insert (30) conducts the high voltage current from the ignition coil (140) to the resistor-type spark plug (20) by connecting the high voltage coil terminal (120) of the ignition coil (140) to the electrode terminal (22) of the resistor-type spark plug (20). The conductor core (32) of the terminals connecting insert (30) is formed of electrically conducting elongated fibers of carbon fiber or graphite fiber. A conductor supporting body stem (34) of the terminals connecting insert (30) forms an insulating and protecting layer around the outside of the fiber conductor core (32).

Abstract: An ignition system comprises an ignition coil assembly (100) that supplies a high voltage electric current to a resistor-type spark plug (20). The ignition coil assembly (100) includes an ignition coil (140), a high voltage coil terminal (120), a terminals connecting insert (30) and an insulator (40). The terminals connecting insert (30) conducts the high voltage current from the ignition coil (140) to the resistor-type spark plug (20) by connecting the high voltage coil terminal (120) of the ignition coil (140) to the electrode terminal (22) of the resistor-type spark plug (20). The conductor core (32) of the terminals connecting insert (30) is formed of electrically conducting elongated fibres of carbon fibre or graphite fibre. A conductor supporting body stem (34) of the terminals connecting insert (30) forms an insulating and protecting layer around the outside of the fibre conductor core (32).

Abstract: Ignition apparatus 10 includes high tension ignition cable 56. The cable 56 is of low electrical resistance per unit length. A central core 100 of the cable 56 is formed of carbon fiber filaments. An insulating layer 110 is provided around the core 100. A semiconductor layer 120 is provided around the insulating layer 110. Another insulating layer 130 is provided around the semiconductor layer 120. A layer of yarn around the other insulating layer 130 forms a protecting layer 140. A protective layer 150 of a flame retardant material forms an outer layer of the cable 56. The ignition apparatus 10 also includes one or more of: a field stabilizer device 30 for stabilizing and regulating high tension voltage in the cable 56; resistor spark plugs 60; connectors fitted to ends of the cable 56 that include resistors therein, such as resistor spark plug boots.