New Danfoss hydraulic pump increases equipment runtime by 50%
Scottish engineering and powertrain experts Danfoss have developed a new digital hydraulic system designed specifically for electric construction equipment that can reduce energy consumption from the machine’s battery by 35%, and improve runtime by more than 50%. (!) Danfoss started with a Develon DX300LC‑7 crawler excavator that was fitted with a Danfoss Editron EM-PMI375 drive motor, EC-C1200 inverter, and MC050 motor controller, and three 140-kWh batteries to make it fully electric. The company then replaced the unit’s conventional swashplate hydraulic pump with a Danfoss-developed DDP180D pump motor to service the excavator’s boom, arm, bucket, and swing. The new unit, instead of supplying constant power and pressure throughout the system, uses ten individually controllable outlets to provide hydraulic force where only it’s needed, allowing designers to effectively designed for the machine’s average workload instead of its peak load. The end result is a massively more efficient machine that can do significantly more work with the same amount of energy. “We are extremely encouraged by these results, but there is more work to do,” says Alasdair Robertson, …








