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권기린(K. R. Kwon),고경남(K. N. Ko) 한국동력기계공학회 2006 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The emulsified fuel resulting from blending diesel fuel and water was experimented for clarifying the characteristics compared with diesel fuel. The experimental setup consisted of high speed diesel engine with 4 cylinder, dynamometer and exhaust gas analyser. When engine speeds were 1600 rpm and 2000 rpm, brake specific fuel consumption, engine torque and power, thermal efficiency and exhaust emission were measured in detail. As the results, the engine torque from emulsified fuel increased with engine speed, while the engine torque from diesel fuel decreased. The engine power from two kinds of fuel was almost the same, but fuel consumption from the emulsified fuel was more than that from diesel fuel. Also, smoke concentration from the emulsified fuel was less than half of that from diesel fuel.
초음파에너지가 물-경유 에멀젼유를 사용하는 기관에 미치는 영향
권기린(K. R. Kwon),고경남(K. N. Ko) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
In order to clarify characteristics of emulsified fuel with water which is added ultrasonic energy, an experimental study was carried out. The experimental results were compared with those of light oil and light oil added ultrasonic energy. The experimental setup consisted of high speed diesel engine with 4 cylinder, dynamometer, ultrasonic fuel feeding system and exhaust gas analyser. As engine speed was changed, brake specific fuel consumption, engine torque and power, thermal efficiency and exhaust emission were measured in detail. As the results, adding ultrasonic energy to emulsified fuel and light oil led to rise of thermal efficiency of 2% to 6%. By means of adding ultrasonic energy, the concentration of both NOx and particulate matter(PM) from emulsified fuel decreased in comparison with those from light oil without ultrasonic energy, while the concentration of CO increased.
초음파에너지가 유채혼합유를 사용하는 디젤기관 성능에 미치는 영향
권기린(K. R. Kwon),고경남(K. N. Ko) 한국동력기계공학회 2004 한국동력기계공학회 학술대회 논문집 Vol.- No.-
The effect of ultrasonic energy for diesel fuel and blend oil has been revealed in this paper. The experimental setup consisted of high speed diesel engine with 4 cylinder, dynamometer and ultrasonic fuel feeding system. Ultrasonic energy was added to diesel fuel and blend oil, which was a blend of diesel fuel and rape-seed oil. As engine speed was changed, brake specific fuel consumption, engine power and torque, thermal efficiency were measured in detail. As the results, by adding ultrasonic energy to diesel fuel and blend oil, the engine performance was improved in rage of the experiment. The effect of the improvement on brake specific fuel consumption and thermal efficiency for blend oil is higher than that for diesel fuel. On the other hand, a rise in engine torque for diesel fuel was higher than that for blend oil. From these results, it may be desirable to add ultrasonic energy to blend oil for the use of blend oil to diesel engine.