1. The auxiliary system to optimize the operation of self-propelled agricultural working machine with several working units, in particular a combine or forage harvester, comprising at least one device for determining the operating parameters and performance parameters of agricultural working machine, a computing device and at least one display device, wherein the computing device is configured to process information received from said sensors embedded mung us, external information and information that can be embedded in a computing device, characterized in that the computing device (27) laid one or more mathematical models (39) describing the work process (62) the agricultural working machine (1), wherein the mathematical model (39) outputs based on the available operating parameters (34) the parameters (37) The effectiveness of the working machine (1) and, taking into account cost relationships (44) determines the likely lost revenues (61) of the working process (62) and displays them on a device ( 22) indie atsii.2. Supporting system according to claim 1, characterized in that the probable lost revenues (61) are determined in the course of working process (62) and / or during the simulation before embarking on the workflow (62) .3. Supporting system according to claim 1, characterized in that a division of the working process (62) in phase (63) of the working process, and determination and display probable lost revenues (64) for each phase (63) of the working process individually and likely lost income (61) representing the sum of the probable loss1. Вспомогательная система для оптимизации работы самоходной сельскохозяйственной рабочей машины с несколькими рабочими агрегатами, в частности зерноуборочного или кормоуборочного комбайна, содержащая, по меньшей мере, одно устройство для определения рабочих параметров и параметров эффективности сельскохозяйственной рабочей машины, вычислительное устройство и, по меньшей мере, одно устройство индикации, причем вычислител
