The use of mobile machinery is widespread across all industrial sectors; however, their low energy efficiency, primarily due to hydraulic architecture, presents a significant problem. The hydraulic excavators available on the market predominantly adopt the Load Sensing architecture, which offers good operational capabilities but exhibits very low energy efficiency, with the net work of the actuators amounting to only 4% of the chemical energy of the fuel. The causes of these energy losses lie in various components of the circuit, such as the internal combustion engine, the hydraulic pump, and the actuators, but the main contribution is attributable to the hydraulic distributor.