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고온·고압 분위기에서의 충돌 분무 특성에 관한 실험적 연구
안병규(Byoungkyu Ahn),정병국(Byongkoog jung),조태영(Taeyoung Cho),송규근(Kyukeun Song),정재연(Jeayoun Jung) 한국자동차공학회 2002 한국자동차공학회 Symposium Vol.2002 No.11
In a high-speed DI diesel engine, injected fuel sprays impinge on the wall of piston cavity. In the experiments<br/> presented here, diesel fuel was injected into a high temperature and pressure chamber in which compressed N2 gas.<br/> In this studies, We examined about impinging spray considering ambient density (18, 24 ,30 kg/m3), ambient<br/> temperature (293,473K). The images of impinging spray were obtained by the high speed video camera. After that<br/> we analyzed the impinging spray characteristics to use the images.<br/> From theses results, The effects of ambient density, ambient temperature and on the characteristics of impinging<br/> spray were investigated.<br/> Finally, the experimental equations of the radial distance and the axial distance of the impinging spray were<br/> proposed as functions of above mentioned variables .
고온 ㆍ 고압 분위기에서의 충돌 분무 특성에 관한 실험적 연구 (Ⅱ)
조태영(teayoung Cho),안병규(Byoungkyu Ahn),정병국(Byongkoog jung),송규근(Kyukeun Song),정재연(Jeayoun Jung) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In a high-speed DI diesel engine, injected fuel sprays impinge on the wall of piston cavity. In the experiments presented here, diesel fuel was injected into a high temperature and pressure chamber in which compressed N₂ gas.<br/> In this studies, We examined about impinging spray considering ambient density (18,24,30<br/> kg/m³), ambient temperature (293,473K), impingement angle(0,30,45°). The images of impinging spray were obtained by the high speed video camera. After that we analyzed the impinging spray characteristics to use the images.<br/> From theses results. The effects of ambient density, ambient temperature and impingement<br/> angle on the characteristics of impinging spray were investigated.<br/> Finally, the experimental equations of the radius and the height of the impinging spray were<br/> proposed as functions of above mentioned variables<br/>
고온·고압 분위기에서의 충돌 후 분무거동에 관한 실험적 연구
조태영(Taeyoung Cho),안병규(Byoungkyu Ahn),정병국(Byongkoog Jung),송규근(Kyukeun Song),정재연(Jeayoun Jung) 한국자동차공학회 2003 한국자동차공학회 지부 학술대회 논문집 Vol.2003 No.5
The Characteristics of diesel Spray have much effect on the engine performances such as power, fuel consumption rate and emissions. Therefore, the measurement of fuel spray characteristics is very important for the improvement of heat engine.<br/> In this studies, We examined about impinging spray considering ambient density (l8,24,30 ㎏/㎥), ambient temperature (293,473K), impingement angle(0,30,45°). The images of impinging spray were obtained by the high speed video camera. After that we analyzed the impinging spray characteristics to use the images.<br/> From theses results. The effects of ambient density, ambient temperature and impingement angle on the characteristics of impinging spray were investigated.<br/> Finally, the experimental equations of the radius and the height of the impinging spray were proposed as functions of above mentioned variables<br/>