Süütekoilid

Süütekoilid, also known as ignition coils, are essential components of an internal combustion engine's ignition system. Their primary function is to convert the low voltage from the vehicle's battery into the high voltage necessary to ignite the fuel-air mixture in the engine cylinders. Without a functioning ignition coil, the spark plugs would not receive the powerful electrical charge required to create a spark, and the engine would not start or run.

Each spark plug in a gasoline engine typically requires its own ignition coil, or in some older systems, a single coil might serve multiple cylinders via a distributor. Modern vehicles often utilize coil-on-plug systems, where an individual ignition coil is mounted directly on top of each spark plug. This design minimizes wiring and allows for more precise control over the ignition timing for each cylinder.

The ignition coil operates on the principle of electromagnetic induction. It consists of two windings of wire, a primary coil and a secondary coil, wrapped around a common iron core. When a low-voltage current from the battery flows through the primary coil, it generates a magnetic field. When this current is suddenly interrupted by the engine control unit (ECU) or a breaker point, the magnetic field collapses. This rapid change in the magnetic field induces a much higher voltage in the secondary coil, which is then directed to the spark plug. The voltage generated is typically in the tens of thousands of volts.