Hydraulic dual-module hybrid driving system with adjustable waste energy recovery for industrial vehicles

Yaoxing Jiang, Zheming Tong, Shuiguang Tong, Zhengyu Xu and Yuansong Li

Energy, 2024, vol. 307, issue C

Abstract: The energy dissipation of industrial vehicle during hydraulic cylinder operations is significant, and the limitations of energy recovery and reuse further exacerbate the issue of energy waste and low energy efficiency. To address these challenges, we propose a hydraulic dual module hybrid driving system (DHDS) for cylinder. This system incorporates a Main drive module with a Power-assisting module, enabling the recovery and reuse of gravitational energy to assist in cargo lifting through the bidirectional operation of the Power-assisting module. Based on the DHDS, we design a multi-mode control strategy (MMCS) with adjustable power distribution capability, allowing for the optimization of recovered energy utilization under various conditions. Furthermore, experiments and simulations are conducted to evaluate the ability of the MMCS to redistribute recovered energy and assess the energy efficiency of the DHDS. Using a DHDS-equipped forklift as an example, simulation platform and test bench are constructed to demonstrate its performance in several designed working cycles. Compared to a 1.2-t electric forklift, the DHDS-equipped forklift with MMCS achieves a battery saving efficiency of 12.70%–40.53 % and a gravitational energy recovery efficiency of 24.80%–62.85 %.

Keywords: Energy recovery; Energy efficiency; Energy saving; Hydraulic hybrid; Forklift (search for similar items in EconPapers)
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:307:y:2024:i:c:s036054422402320x

DOI: 10.1016/j.energy.2024.132546

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