Structural Analysis of the Operations and Time for Tank Unloading of Grain Harvesters

The reduction of the grain tank unloading time is a key factor for increasing the combine performance when unloading at a standstill. The paper analyzes four variants of grain tank unloading that are applicable in Bulgaria. For each of the four variants, it determines the time algorithms of the operations carried out by the vehicle and the combine operators. These algorithms are used to optimize the unloading time and, respectively, to increase the combine performance when unloading at a standstill.