Abstract
A new configuration of hydraulic hybrid vehicle (HHV) was presented, which mainly consists of an engine, high-pressure accumulator, lower-pressure reservoir and hydraulic transformer (HT) connected to common pressure rail (CPR), and the working principle of hydraulic hybrid vehicle has been described to extend its energy-regenerated potential. Moreover, the mathematical models of the instantaneous pressure ratio of HT and the characteristic parameters of parallel and series accumulator (i.e. effective volume, specific energy, and charge-discharge efficiency) based on lumped parameters method were built, respectively. The simulation and experimental tests of dynamic characteristics of HT and accumulator were done, the result shows that the theoretical analysis was the same as the experimental results by comparing them in the curve trend, and the series accumulator was much superior to parallel accumulator in terms of pulsation damping of hydraulic transformer, that is the simulation results reasonably and appropriately.
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Chen, Y.L., Liu, S.A., Jiang, J.H. et al. Dynamic analysis of energy storage unit of the hydraulic hybrid vehicle. Int.J Automot. Technol. 14, 101–112 (2013). https://doi.org/10.1007/s12239-013-0012-4
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DOI: https://doi.org/10.1007/s12239-013-0012-4