吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (2): 420-428.doi: 10.13229/j.cnki.jdxbgxb201502013

• Orignal Article • Previous Articles     Next Articles

Impact of main parameters of accumulator on parallel hydraulic hybrid

DONG Han1,2,LIU Xin-hui1,2,WANG Xin1,2,ZHENG Bo-yuan1,2,LIANG Wei-quan1,2,WANG Jia-yi1,2   

  1. 1.State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022,China;
    2.College of Mechanical Science and Engineering, Jilin University, Changchun 130022,China
  • Received:2014-02-03 Online:2015-04-01 Published:2015-04-01

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Abstract: Accumulator is an energy storage device in parallel hydraulic hybrid systems, and its main parameters greatly influence the energy recovery effect. The models of the main system elements were built and simulated in AMESim software. Simulation curves were obtained under different conditions, which were used to study the effects of the main parameters on the accumulator system performance. In order to verify the simulation results, experiments were conducted on the test bench restructured on real vehicles according to the simulation results. It is shown that the experimental results are in agreement with the simulation results. The pre-charge pressure and volume size of the accumulator system have the most significant influence on energy saving. Brake energy recovery and recycling rate are inversely proportional to the speed. Pre-charge pressure has great impact on the braking distance. After the accumulator volume reaches a certain value, the changes of energy recovery and reutilization do not significantly improve further with the volume increase.

Key words: fluid power transmission and control, hydraulic hybrid, brake energy recovery, hydraulic accumulator

CLC Number: 

  • TH137
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