#Ignition system The ignition system is a relatively straightforward system. Its purpose is to provide the spark within the combustion section of the engine so that, when fuel is delivered to the fuel nozzles, the atomized fuel mist will ignite and the combustion process will start. Since all 4 steps of the engine cycle in a turbine engine are continuous, once the fuel is ignited the combustion process normally continues until the fuel flow is discontinued during engine shutdown. This is unlike