süüteplokk

A süüteplokk, often translated as ignition module or control unit, is a key component in the ignition system of many internal combustion engines, particularly those found in older vehicles and some smaller engines. Its primary function is to regulate the timing and duration of the spark that ignites the fuel-air mixture in the engine cylinders.

Historically, süüteploks replaced older mechanical contact breaker (points) systems. Unlike points which are prone to wear and require regular adjustment, a süüteplokk typically uses electronic components to achieve a more consistent and reliable spark. This electronic control allows for more precise ignition timing, which can lead to improved engine performance, fuel efficiency, and reduced emissions.

The süüteplokk receives signals from various sensors or from the engine's rotational speed (RPM) and engine load. Based on this information, it determines the optimal moment to trigger the ignition coil. The coil then generates a high-voltage pulse that is delivered to the spark plug, creating the spark. In some systems, the süüteplokk might also control the dwell time, which is the period the ignition coil is energized before firing.

Modern vehicles have largely moved towards more integrated engine control units (ECUs) that perform the functions of a süüteplokk along with many other engine management tasks. However, the term süüteplokk is still relevant when discussing or repairing older ignition systems where a separate ignition control module is present. Its reliable operation is crucial for the engine to start and run smoothly.