Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Study on Real-Work NOx Emission Characteristics according to Load Factor of Excavator

굴착기의 부하율에 따른 실작업 질소산화물 배출 특성 연구

  • Dal Ho Shin (Department of Mechanical Engineering, Konkuk University) ;
  • Yun Seo Park (National Air Emission Inventory and Research Center) ;
  • Chul Yoo (National Air Emission Inventory and Research Center) ;
  • Suhan Park (School of Mechanical and Aerospace Engineering, Konkuk University)
  • Received : 2023.08.10
  • Accepted : 2023.08.18
  • Published : 2023.09.01
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Abstract

The purpose of this study was to investigate and compare the impact of engine load on the emission characteristics of excavator engines, with the aim of improving the method for calculating the emission inventory of construction machinery. The engine load in excavators is directly correlated with the operational workload, and variations in the load factor (LF) can significantly influence the emission inventory. Thus, on-board diagnostic (OBD) data from an excavator at a construction site were systematically collected to measure engine output and emissions. The results revealed discernible differences in emissions based on engine load, even when the average excavator engine performance remained constant. This highlights the significant influence of the type and characteristics of the work being carried out on emission characteristics. Making realistic adjustments to the LF used in emission calculation formulas emerges as a crucial strategy for environmental improvement. Moreover, the analysis of the effects of engine load on emissions from excavators provides valuable insights for enhancing environmental protection measures.

Keywords

Acknowledgement

이 연구는 2022년 환경부 국가미세먼지정보센터의 용역과제 '농업기계 및 건설기계 배출량 산정방법 개선(II)' 연구와 한국연구재단 중견연구후속지원사업(RS-2023-00208502)의 지원을 받아 수행되었음을 밝힙니다.

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