A hydraulic hybrid propulsion method for automobiles with self-adaptive system

Wei Wu, Jibin Hu, Shihua Yuan and Chongfeng Di

Energy, 2016, vol. 114, issue C, 683-692

Abstract: A hydraulic hybrid vehicle with the self-adaptive system is proposed. The mode-switching between the driving mode and the hydraulic regenerative braking mode is realised by the pressure cross-feedback control. Extensive simulated and tested results are presented. The control parameters are reduced and the energy efficiency can be increased by the self-adaptive system. The mode-switching response is fast. The response time can be adjusted by changing the controlling spool diameter of the hydraulic operated check valve in the self-adaptive system. The closing of the valve becomes faster with a smaller controlling spool diameter. The hydraulic regenerative braking mode can be achieved by changing the hydraulic transformer controlled angle. Compared with the convention electric-hydraulic system, the self-adaptive system for the hydraulic hybrid vehicle mode-switching has a higher reliability and a lower cost. The efficiency of the hydraulic regenerative braking is also increased.

Keywords: Hydraulic hybrid vehicle; Hydraulic transformer; Hydraulic regenerative braking; Energy efficiency; Cross-feedback control (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (6)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:114:y:2016:i:c:p:683-692

DOI: 10.1016/j.energy.2016.08.042

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