吉林大学学报(工学版) ›› 2014, Vol. 44 ›› Issue (2): 364-368.doi: 10.13229/j.cnki.jdxbgxb201402014

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Hydraulic hybrid technology of moving construction machinery

YAN Li-juan1, SUN Hui2, LIU Wei2, JIANG Ji-hai3, ZHAO Yan2, HAN Jia-wei2   

  1. 1. XCMG Constuction Machinery Co., Ltd., Xuzhou 221004, China;
    2. Jiangsu Xuzhou Construction Machinery Research Institute, Xuzhou 221004, China;
    3. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2012-08-27 Online:2014-02-01 Published:2014-02-01

Abstract:

The operating characteristic of moving construction machinery is analyzed and the energy saving potential is evaluated. In view of the characteristics that moving construction machinery frequently start and stop, different energy saving schemes are proposed. Regenerative braking strategy and energy reuse strategy are designed based on the advantage of high power density of hydraulic accumulator. Prototypes of hydraulic hybrid loader and hydraulic hybrid concrete mixer truck are developed. Experiment results show that the hydraulic hybrid system can effectively recover and reuse the braking energy. The control strategies reasonably switch among various operation modes, reduce fuel consumption and improve the dynamic performance of the machine.

Key words: construction machinery, hydraulic hybrid, energy regeneration, hydraulic pump/motor

CLC Number: 

  • TH137

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