Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Experimental Study on the Spray Characteristics of a Fuel Injector for a Non-Road Small Engine

노외용 소형엔진 인젝터의 분무특성에 대한 실험적 연구

  • Yeom, Kyoung-Min (Mechanical Engineering, Graduate School, Kongju National University) ;
  • Park, Sung-Young (Industrial Technology Research Institute, College of Engineering, Kongju National University)
  • 염경민 (공주대학교 일반대학원 기계공학과) ;
  • 박성영 (공주대학교 공과대학 생산기술연구소)
  • Received : 2011.01.10
  • Accepted : 2011.05.12
  • Published : 2011.05.31
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Abstract

Since recently exhaust gas regulation for a non-road small engine as well as commercial vehicle engine has been enforced, a carburettor of a small engine should be replaced by an electronic fuel injection system. In this study, the spray characteristics of the 400cc gasoline small engine injector has been experimentally analyzed. Based on the experimental results, suitable injector for the small engine has been selected. Through the test rig measuring spray mass distribution, fuel distribution characteristics of 3 hole- and 6 hole-injector has been analyzed. Through the visualization equipment, injector spray angle, penetration length and spray width have been measured and analyzed. Considering spray characteristics and stability, 6 hole-injector is selected for the 400cc gasoline small engine.

최근 배기 규제가 자동차 엔진에 국한되지 않고 노외용 소형엔진 부분에서도 세계적으로 강화됨에 따라, 배기규제에 대응하기 위하여 기존 노외용 소형엔진의 기화기 방식에서 벗어나 전자연료 분무방식으로의 전환이 필요하게 되었다. 본 연구에서는 400cc 가솔린 엔진용 인젝터의 연료공급 특성을 실험적으로 분석하였으며, 이를 토대로 소형엔진에 적합한 인젝터를 선정하였다. 분무질량분포 측정장치를 통하여 3홀 및 6홀인젝터의 분무질량분포 특성을 분석하였다. 가시화 실험 장치를 통하여 각 인젝터의 분무각, 분무도달거리 및 분무폭을 분석하였다. 분무질량분포 실험 및 분무 가시화 실험을 통하여 분무특성이 우수하고 안정적인 분무를 형성하는 6홀 인젝터를 소형엔진용으로 선정하였다.

Keywords

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