Research on new vibratory energy-recycling hydraulic damping system

Abstract

A vibratory energy-recycling hydraulic damping system is introduced which includes four vibration dampers, one energy accumulator, one storage tank and some hydraulic components. Vibration damper is composed of nitrogen cavity, piston, piston rod, shell, rebound valve, compression valve, inlet tube, outlet tube and so on. Energy accumulator contains relief valve and oil return tube. The oil is circulated between storage tank, energy accumulator, vibration dampers and hydraulic components. Oil from storage tank enters into vibration dampers by compression valve when the suspension is compressed and leaves by rebound valve when stretched. When the oil is flowing between compression valve and rebound valve, frictional heat is produced which depletes vibratory energy and damps the vibration. The pressurized oil flows into energy accumulator and then enters into some hydraulic component by electromagnetic one-way valve when necessary, which together with pressurized oil from storage tank help hydraulic component to fulfill its function. Vibratory energy is converted to output power of hydraulic component. The oil returns storage tank after hydraulic component's function is finished. The introduced system can recycle some vibratory energy and reduce oil consumption. Pressurized oil from the system can be used for braking system, power-assisted steering, hydraulic clutch operating mechanism and so on. Structure of the system is simple and which is highly practical.