Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Review of Energy Saving Technology of Hybrid Construction Machine

  • Yu, YingXiao (Department of Mechanical Engineering, University of Ulsan) ;
  • Jeong, Eunjin (Department of Mechanical Engineering, University of Ulsan) ;
  • Ahn, Kyoung Kwan (School of Mechanical Engineering, University of Ulsan)
  • Received : 2018.11.26
  • Accepted : 2018.11.29
  • Published : 2018.12.01
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Abstract

This study focuses on the energy saving of construction machinery, especially excavators and wheel loaders coming on a backdrop of energy shortage and environment pollution. Due to the problem of the low energy efficiency and the pollution of conventional hydraulic excavators, hybrid hydraulic excavators were developed to solve this challenge. Firstly, this paper discusses the different configurations of the hybrid hydraulic excavator and recent research trend of hybrid hydraulic excavator is reviewed. Secondly, the productions and research of the construction machine companies were analyzed and finally, the future challenges of hybrid technology to the hydraulic excavator were discussed.

Keywords

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Fig. 1 Configuration of series hybrid excavator

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Fig. 2 Configuration of parallel hybrid excavator

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Fig. 3 The parallel hybrid hydraulic excavator research by Qing Xiao.

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Fig. 4 Energy-saving pressure-compensated scheme for hybrid hydraulic excavators

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Fig. 5 The hydraulic excavator with potential energy regeneration system

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Fig. 6 One example of a hybrid hydraulic excavator

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Fig. 7 Configuration of CPR system

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Fig. 8 Hydraulic hybrid system research by Sun Hui.

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Fig. 9 Configuration of STEAM system

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Fig. 10 The hydraulic hybrid system of using hydraulic transformer

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Fig. 11 The hybrid hydraulic excavator of Komatsu

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Fig. 12 The hybrid hydraulic excavator of Kobe Steel

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Fig. 13 ZX200 hybrid excavator of Hitachi

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