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논문 상세정보

커먼레일 분사시스템에서 바이오에탄올 및 디젤연료 혼합 바이오디젤의 분무 특성

Spray Characteristics of Biodiesel Fuel by Blending Bioethanol and Diesel Fuel in a Common Rail Injection System

Abstract

In order to investigate the spray characteristics according to diesel and bioethanol blending with biodiesel fuel, macroscopic spray characteristics were analyzed from the comparison of the effect of the injection pressure, ambient pressure and density on the spray tip penetration and spray cone angle. In addition, spray atomization characteristics were studied with local and overall Sauter mean diameter (SMD) and the contour map of SMD distribution at various injection conditions. It was revealed that the spray tip penetration of biodiesel fuels blended with diesel and ethanol was shorter than that of an undiluted biodiesel fuel at low injection pressure. However, the difference of spray tip penetration among three test fuels reduces at a high injection pressure. Increase of the ambient gas density leads to the decrease of the spray tip penetration of three test fuels. When diesel and ethanol fuels add to an undiluted biodiesel fuel, spray cone angle increases due to the decrease of the fuel density at the same ambient pressure condition. On the other hand, the droplet mean diameter decreases due to the reduction of the kinematic viscosity and surface tension.

참고문헌 (13)

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이 논문을 인용한 문헌 (1)

  1. Cha, June-Pyo ; Park, Su-Han ; Lee, Chang-Sik ; Park, Sung-Wook 2011. "Study on Spray and Exhaust Emission Characteristics of DME-Biodiesel Blended Fuel in Compression Ignition Engine" 大韓機械學會論文集. Transactions of the Korean Society of Mechanical Engineers. B. B, 35(1): 67~73 

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