gyújtásrendszereket

Gyújtásrendszerek refer to the mechanisms responsible for initiating combustion within an internal combustion engine. Their primary function is to generate a high-voltage electrical spark at the precise moment needed to ignite the compressed air-fuel mixture in the cylinder. The most common type historically has been the contact breaker point ignition system, which uses a mechanical breaker point set to interrupt the primary circuit of the ignition coil. This interruption causes a rapid collapse of the magnetic field in the coil, inducing a high voltage in the secondary winding. This high voltage is then directed to the spark plug via a distributor, which also routes the spark to the correct cylinder in the firing order.

More modern vehicles utilize electronic ignition systems, which have largely replaced mechanical systems due to their improved reliability, durability, and performance. These systems eliminate the wear-prone breaker points. Early electronic ignitions used an electronic control module to trigger the ignition coil. More advanced systems, often referred to as distributorless ignition systems (DIS) or coil-on-plug (COP) systems, further refine this. DIS systems typically use two coils to fire two spark plugs simultaneously, while COP systems place an individual ignition coil directly on top of each spark plug, eliminating the need for spark plug wires and further enhancing precision and efficiency. The timing of the spark is managed by the engine control unit (ECU) based on various sensor inputs.