Energy efficient design of regenerative shock absorbers for automotive suspensions: A multi-objective optimization framework

Marco Puliti, Renato Galluzzi, Federico Tessari, Nicola Amati and Andrea Tonoli

Applied Energy, 2024, vol. 358, issue C, No S0306261923019062

Abstract: This study addresses the optimized design of electro-hydrostatic regenerative shock absorbers to enhance vibrational energy recovery in ground vehicles, aiming to reduce carbon footprint. The design strategy focuses on maximizing regeneration efficiency while minimizing actuator volume. Important trade-offs are considered as constraints, such as ride comfort and road holding. The approach employs a multi-objective evolutionary genetic algorithm, validated through numerical analysis, and applied to design a prototype. Experimental results show a peak regeneration efficiency of 45%, and simulations on a class-B vehicle indicate an average regenerated power of 101W per shock absorber, corresponding to a CO2 emission reduction of 5.25g/km.

Keywords: Efficiency-driven design; Energy harvesting; Energy management; Regenerative shock absorber; Electro-hydrostatic actuation (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1016/j.apenergy.2023.122542

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