Study on Energy Saving of Hybrid Hydraulic Excavator

Abstract:

For the high energy consumption and poor emission of a medium-sized hydraulic excavator, energy consumption point is analyzed combined with the advantages of the electric hybrid system. The energy recovery schematic of the system is designed. Mathematical models of the slewing system are established and theoretical simulation is conducted, and it is compared with the traditional structure. The velocity, displacement, and energy consumption curves of the two systems are concluded under the same conditions. The comparison shows that: energy saving of the electric hybrid slewing system is 37.27% compared with the traditional system. And the electric hybrid slewing system has the characteristics of the better control function and the higher energy utilization.

• Periodical: Applied Mechanics and Materials (Volume 312)
• Pages: 158-162
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.312.158
• Online since: February 2013
• Authors: Wen Hai Wu, Jian Ke, Huan Long Liu, Yu Lan Yang, Hui Zheng
• Keywords: Electric Hybrid, Energy Recovery, Hydraulic Excavator, Slewing System

References

[1] Xiuping Su, Wei Li, Yuqiao Wang, Xuefeng Yang: Study and countermeasures on engine-pump power loss of hydraulic excavators[J]. Machine Tool & Hydraulics, 2009，37(12): 104-107.

[2] Qinghua He, Peng Hao, Yihua Chang: Energy-saving system for a hydraulic excavator based on the matching of constant power and vaviable power[J]. Mechanical Science and Technology, 2007，26(2):188-191.

[3] Tianliang Lin, Qingfeng Wang, Baozan Hu, et al: Research on the energy regeneration systems for hybrid hydraulic excavators [J]. Automation in Construction, 2010(19):1016-1026.

DOI: 10.1016/j.autcon.2010.08.002

[4] Yuandao Li, Shuyan Wang: Research of the reform plan on the rotating body of WY40 hydraulic excavators[J]. Construction mechanization, 1996(12) :9-13.

[5] Shuzhong Zhang, Gong Zhang, Junfang Lu, Yiwen Tang: Simulation analysis of slewing hydraulic system of hydraulic excavator[J]. Construction mechanization, 2008(11):57-59.

[6] Gang Shang, Long Quan: Simulation analysis of slewing hydraulic system of hydraulic excavator based on AMESim[J]. Hydraulic and pneumatic seals, 2009(5) :34-38.

[7] Zongyi Huang, Ji Fan, Wei Ye: Hydraulic operating circuits of slewing devices of excavators (First) [J]. Construction mechanization, 2004(1) :55-57.

[8] Zongyi Huang, Ji Fan, Wei Ye: Hydraulic operating circuits of slewing devices of excavators(Second) [J].Construction mechanization, 2004(2) :62-63.

[9] Qing Xiao: Control strategy and parameter matching of hybrid system in hydraulic excavator[J]. PhD thesis of Zhejiang University, 2008. 7.