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류정인,정명진 충남대학교 1991 論文集 Vol.14 No.1
This paper deals with a fundamental study on applying low grade fuel oil to diesel engine. Experiments wee carried out to clarify the effect of ultrasonic vibrations on the characteristics of kinematic viscosity, structure, volatility of low grade fuel oil. The results are obtained as follows : 1. The ultrasonic vibrations of low grade fuel oil result in the decrease of kinematic viscosity of low grade fuel oil. 2. The ultrasonic vibrations of low grade fuel oil result in the Branchness Index of low grade fuel oil. 3. The ultrasonic vibrations of low grade fuel oil result in the lowering evaporated line of low grade oil.
류정인 한국자동차공학회 1989 오토저널 Vol.11 No.5
본 고에서는 현재 이용되고 있는 초음파 발생법의 원리와 특징, 진동자의 설게법 및 진동의 확대법 horn의 설계 등을 다루어 내연기관 기술자가 직접 이용할 수 있도록 개설하여 액체의 미립화를 마감하고자 한다.
류정인 忠南大學校 産業技術硏究所 1987 산업기술연구논문집 Vol.2 No.1
An optimum ultrasonic atomizer has been manufactured to increase fuel atomization rate and obtain fuel fine droplet size which are the major engine performance increasing factor in gasoline engine. New atomizer and commercial carburetor have been installed in test gasoline engine and followings are the result of the performance test. 1) Fuel size of new atomizer has been less than 4% of commercial carburetor. 2) Fuel atomization rate has been increased 25-40% at same AF ratio. 3) BMEP was similar to the commercial carburetor at same operating condition but lean combustion range can be extended up to AF ratio of 35 : 1. 4) BSFC has been decreased 40%-50% at same operating condition. 5) CO and HC emissions of new atomizer has been reduced to less than 5% of the commercial carburetor at same operating condition.
류정인,최두석 충남대학교 공업교육연구소 1982 論文集 Vol.5 No.2
The whole world is troubled because of the international oil shocks of 1974 and 1979 and because of the worry of future oil exhaustion. In these days of endeavoring to reduce oil consumption and to control air pollution from automobile exhaust emissions, this study sought means to improve the volatility of gasoline with methanol and ethanol through the use of a preheated cooling medium. The results were as follow: 1) Generally the volatility increased with gasoline blends. 2) Also the volatility increased with a preheated cooling medium. 3) It is obtained to sensitivity of volatility to manufactured equilibrium air distillation apparatus.