Methodology of Excavator System Energy Flow-Down

Kwangman An, Hyehyun Kang, Youngkuk An, Jinil Park and Jonghwa Lee
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Kwangman An: Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea
Hyehyun Kang: Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea
Youngkuk An: Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea
Jinil Park: Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea
Jonghwa Lee: Department of Mechanical Engineering, Ajou University, Suwon 16499, Gyeonggi, Korea

Energies, 2020, vol. 13, issue 4, 1-19

Abstract: Due to the strengthening of air-quality regulations, researchers have been investigating methods to improve excavator energy efficiency. Many researchers primarily conducted simulation studies employing mathematical models to analyze the energy consumption of excavator systems, which is necessary to examine the fuel efficiency improvement margin and the improvement effect. However, to effectively study the improvement of excavator efficiency, the real-time energy consumption characteristics must be examined through simulations and analyses of actual equipment-based energy consumption. Accordingly, this study establishes an energy flow-down model for the entire excavator system based on actual equipment tests. A measurement system is built to measure the required data, thereby establishing an experimental methodology for modeling each component. This paper presents an excavator system energy flow-down methodology that integrates the energy flow-down model, measurement system, and experimental methodology. This methodology was applied to dig and dump operations, and the energy consumption characteristics were analyzed. An analysis of the operating modes indicates that 59.8% of the total fuel energy was consumed in the engine system, 17% in the hydraulic system, and 23.2% in the hydraulic actuation systems. The methodology can be used to help analysis of the fuel efficiency improvement margin under various conditions.

Keywords: hydraulic excavator; energy consumption; energy flow down; engine system; hydraulic system; hydraulic actuation system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (8)

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