Preheating system (Scorpio 2)

When the engine is cold, it is not possible to reach the autoignition temperature solely due to the compression ratio, so the fresh charge in the combustion chamber must be preheated.

For this purpose, a pin glow plug is screwed into each combustion chamber. The main parts of the glow plug are the housing and the heating pin pressed into it. As soon as voltage is applied, the electric coil of the heating pin heats up to a temperature of over +850°C within a few seconds, due to which the warm-up period before starting the engine with the starter rarely lasts more than 10 seconds. When the preheating system indicator on the instrument panel goes out, the engine can be started.