Articolo in rivista, 2023, ENG, 10.13052/ijfp1439-9776.2428

Viable Energy Recovery Strategies Through Advanced Directional Control Valve

Gianluca Ganassi, Davide Mesturin, Cesare Dolcin, Antonella Bonavolontà, Emma Frosina, Pietro Marani

Walvoil SpA, Walvoil SpA, Walvoil SpA, UniNA FPRG, UniSannio DING, C.N.R.-STEMS,

The demand for more efficient machines is pushing hydraulic manufacturers to develop a new generation of systems capable of energy saving and recovering. An advanced flow sharing directional control valve with downstream compensation reduces meter-out pressure losses and recovers energy both in combined movements and with overrunning loads. Tests carried out on a prototype on a test bench confirm the proper functioning of the concept and allow tuning its lumped parameters numerical model. A control strategy based on keeping the optimal compensator position allows computing the maximum theoretical recovery. The simulation of a mini-excavator digging cycle shows the energy saving and recovery compared to a standard flow sharing system.

International journal of fluid power 24 (2), pp. 361–392

Keywords

directional control valve, flow sharing, downstream compensation, energy saving, energy recovery

CNR authors

Marani Pietro

CNR institutes

STEMS – Istituto di Scienze e Tecnologie per l'Energia e la Mobilità Sostenibili