Doosan's D-ECOPOWER+FEH technology utilizes electronic pressure control pumps in a closed center hydraulic excavators to optimize productivity and fuel consumption based on the selected mode. A closed central control valve minimizes pressure loss, while an electric pressure control pump more effectively manages and optimizes engine power. Automatically regenerate every 25 hours, during which the excavator and wheel loader continues to operate without being affected. The operator can check the status of the DPF through the display screen on the dashboard in the cab. The high output of the engine, combined with the Virtual Bleed Off (VBO) hydraulic system (D-ECOPOWER+) and controlled by an electric robotic arm (FEH), provides a first-class hydraulic flow rate min of (3x 523) -1569 l/and a high system pressure of 360 bar, jointly contributing to the best performance in the 100 ton market. The software is used to electronically reproduce all the advantages of an open center hydraulic system with minimal energy loss. Doosan hydraulic system and engine output have been comprehensively optimized and synchronized, further reducing losses within the system.