Research on effect of gas-charged accumulator capacity on hydraulic regenerative shock absorber system

Regenerative shock absorber is able to improve the energy conservation, ride comfort and handling of vehicles by suppressing oscillatory motion due to road roughness. This paper presents the performance studies of modelling and testing for a hydraulic regenerative shock absorber system with different sizes of gas-charged accumulator in order to improve the stability of hydraulic behaviour and power regeneration. The model is proposed to stabilize hydraulic flow with variable accumulator capacity with the impressive power regeneration efficiency which is almost constant, and obtained agreeable results between predicted and measured in sinusoidal oscillation. In addition, Random road profiles are also generated as vibration source to investigate the capability of power regeneration experimentally. The results show that the stability and continuity of power regeneration is observably improved by adjusting accumulator capacity.