Basic information about ignition coils

NGK presents the basics about ignition coils and how they generate the high voltage required in the petrol engine for the generation of the ignition spark.

The essential function of the ignition coil is the provision of high voltage, which jumps between the centre and earth electrode on the spark plug in the cylinder and thereby generates the ignition spark.

In the process, the ignition coil plays an essential role in providing a reliable ignition and thus the smooth and efficient operation of the engine.

Related topics

Basic ignition coil principles: NGK explains the operating principle of an ignition coil

Design of an ignition coil: Information about the design of NGK ignition coils and the generation of high voltage through magnetic induction

The NGK ignition coil code: The item number in the NGK ignition coil range indicates which number stands for which type of ignition coil and thereby makes it easier to find the right ignition coil and ignition cables

Installation tips for ignition coils: The correct installation of an NGK ignition coil guarantees the optimal function and a long service life.

Distribution of the ignition spark: In the classical version a central ignition coil generates the high voltage necessary for the ignition of the fuel-air mixture.

Ignition cables: The ignition cables are responsible for conducting the voltage (U) to the spark plug with as little loss as possible.