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김재덕(Jaeduk Kim),구리 아이눌(Ghurri Ainull),송규근(Kyukeun Song),정재연(Jaeyeon Jung) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
This study is conducted to investigate the fuel spray characteristics on common-rail injection system according to fuel type, injection pressure, injection duration, and fuel viscosity respectively. The effect of the biodiesel fuel mixing ratio on the spray and emission gases characteristics are also informed at various experimental conditions. The experiment results show that the biodiesel characteristics in this study have different spray patterns compared to the diesel fuel due to injection pressure and injection duration. The emission characteristics of biodiesel fuel are affected by the mixing ratio of biodiesel. It has lower emissions compared to diesel fuel though it has similar power to diesel fuel.
기체주입미립화를 이용한 등유와 식물유 분무의 미립화특성 연구
김석곤(Seokgon Kim),김재덕(Jaeduk Kim),아이눌 구리(Ainul ghurri),송규근(Kyukeun Song),정재연(Jaeyoun Jung),김형곤(Hyunggon Kim) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.11
Investigation of atomization characteristics between kerosene and vegetable oil spray was carried out. Kerosene and vegetable oil spray are produced by effervescent atomizer with separated air chamber in this study. To examine microscopic atomization characteristics including drop size distribution, cumulative volume fraction, span factor and SMD, LDPA was employed. During the experiments, the volume flow rate of working fluids was kept constant at 0.1g/s, and the ALR was changed from 0.1 to 0.8. Experimental results showed that SMD is obtained under 40㎛ in the most of experimental conditions, regardless of working fluids type. Also, we can observe that SMD is increased but droplet is more uniform when we perform injection especially using vegetable oil as working fluid rather than kerosene.