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<p>This study aims to enhance electric vehicle (EV) energy efficiency by addressing energy loss from road vibrations. Conventional EVs lose significant energy as heat and vibrations, affecting performance and battery life. To combat this, we introduce the intelligent energy harvesting shock absorber (IEHSA), which converts road vibrations into usable energy using a cylindrical cam, rack, and dual generators linked to the vehicle’s wheel and chassis. Simulations in MATLAB/Simulink and SOLIDWORKS show that the IEHSA can achieve a maximum output electrical power of 6.583 W with 65.8 % efficiency at a 10 mm amplitude and 2.5 Hz frequency. This system improves ride quality, extends range, and reduces environmental impact by powering autonomous sensors, offering a low-maintenance and cost-effective solution. The IEHSA uniquely integrates energy harvesting with suspension systems, providing a balanced approach to energy recovery and ride comfort, thus contributing to sustainable EV performance and reducing carbon footprints.</p>

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Intelligent shock absorbers for enhancing energy efficiency in electric vehicles

  • 期刊论文

  • 发表日期：

    2026年1月10日

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  • Alothmani Abdulwasea,
  • Wenbo Liu

摘要

This study aims to enhance electric vehicle (EV) energy efficiency by addressing energy loss from road vibrations. Conventional EVs lose significant energy as heat and vibrations, affecting performance and battery life. To combat this, we introduce the intelligent energy harvesting shock absorber (IEHSA), which converts road vibrations into usable energy using a cylindrical cam, rack, and dual generators linked to the vehicle’s wheel and chassis. Simulations in MATLAB/Simulink and SOLIDWORKS show that the IEHSA can achieve a maximum output electrical power of 6.583 W with 65.8 % efficiency at a 10 mm amplitude and 2.5 Hz frequency. This system improves ride quality, extends range, and reduces environmental impact by powering autonomous sensors, offering a low-maintenance and cost-effective solution. The IEHSA uniquely integrates energy harvesting with suspension systems, providing a balanced approach to energy recovery and ride comfort, thus contributing to sustainable EV performance and reducing carbon footprints.