Expanded and supported agricultural efficiency is important to meet the increasing re- quests for nourishment and vitality in the globe. An accurate analysis of the energy consumption of agricultural machinery allows improving the efficiency and productivity of various field operations, reduce production cost, increase yield, and improve sustain- ability. In this thesis project have been developed and modeled the main components which constitute the hydraulic system of an Agricultural Tractor using different tools as AMESim, Matlab/Simulink, Solidworks, in order to perform it and allow designers and users to eval- uate the losses of physical equipment. In detail, has been modeled the piston axial pumps that supply all components along the high/ low-pressure lines of the system and the validation of these comparing with dynamic characteristics provided by the producing company.