Viable Energy Recovery Strategies Through Advanced Directional Control Valve
DOI:
https://doi.org/10.13052/ijfp1439-9776.2428Keywords:
directional control valve, flow sharing, downstream compensation, energy saving, energy recoveryAbstract
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.
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References
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