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NGK - Distributor Ignition Coils
With a distributor ignition coil, the high-voltage pulse generated by the ignition coil passes through an ignition cable to a mechanical ignition distributor. This, in turn, distributes the high-voltage pulse to the corresponding ignition cable, which provides voltage to the cylinder. This ignition coil type can be found in older vehicles; it was in use well into the 1990s.
Handling high voltage is the task an ignition coil must perform reliably. Weak ignition coils cause engine misfiring and performance problems. As one of the world’s leading ignition specialists, NGK SPARK PLUG offers an extensive range of ignition coils accurately engineered for a precise fit and perfect durability.
The continuous development of an ignition system has advanced over the years – and with it, the ignition coils used by car manufacturers. In general, ignition coil technology can be split into two fundamental operating principles: ‘single spark technology’ and ‘dual spark technology’. With single spark technology, there is an individual coil for each spark plug supplied. With dual spark technology, two cylinders are always actuated simultaneously by one coil.
- NGK ignition coils use the technology required by the car manufacturers
- The vacuum moulding process is used to ensure a blister-free encapsulation
- Each ignition coil is produced in strict compliance with OE specifications
Due to the high demands placed on ignition coils, the design and the materials used must be resistant to heat and moisture in the engine bay and function reliably. Oil and petrol vapours mustn’t be able to harm the housing, as damage to the housing would impair the function.