Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Effect of Nozzle Hole Number on Atomization Characteristics of DME Fuel Spray using High Pressure Injector

고압 인젝터의 노즐 홀 수가 DME 연료분무의 미립화 특성에 미치는 영향

  • 이종태 (국립환경과학원 교통환경연구소) ;
  • 이상훈 (한양대학교 대학원) ;
  • 전문수 (한국교통대학교 에너지시스템공학과)
  • Received : 2014.11.03
  • Accepted : 2014.12.17
  • Published : 2014.12.31
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Abstract

This paper presents effect of nozzle hole number on atomization characteristic of DME fuel spray using three different type of injector having the hole number of 6, 7 and 8. For this study, PDPA(phase Doppler particle analyzer) experiment was performed in terms of $T_{ASOE}$ under various injection pressure. To compare general trend of atomization characteristic, the law data were ensemble averaged based on $T_{eng}$ of 0.2 ms. Results showed that the droplet diameter in terms of SMD(Sauter Mean Diameter) was reduced as increase in injection pressure. Increasing the number of hole lead to reduce in droplet diameter, but no significant reduction in diameter was observed between hole number of 7 and that of 8. In addition, increasing the number of hole resulted in decrease in droplet velocity which is considered as the effect of reduction in spray momentum due to decreasing of fuel quantity per each hole.

Keywords

References

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