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[디젤엔진부문] 고압분위기에서 디젤분무 거동에 관한 실험적 연구
류호성(Hosung Ryu),김현정(Hunjoung Kim),송규근(Kukum Song),T. YANO 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A diesel engine is one of the major prime movers to its high thermal efficiency. But due to the recent attention for the environmental pollution, the emissions of diesel engine became to a important problem. So it is needed to understand the characteristics of diesel spray injected into a combustion chamber.<br/> The factor which controls the diesel spray are the injection pressure, engine speed, the nozzle diameter, the impinging angle and the variation of pressure and temperature. In this paper, experiments were conducted for the variation of the environmental pressure(0bar, 30bar, 40bar, 50bar), free spray<br/>
Renewable Power Generation Forecasting Method for Distribution System: A Review
조진태,김홍주,류호성,조영표,Cho, Jintae,Kim, Hongjoo,Ryu, Hosung,Cho, Youngpyo Korea Electric Power Corporation 2022 KEPCO Journal on electric power and energy Vol.8 No.1
Power generated from renewable energy has continuously increased recently. As the distributed generation begins to interconnect in the distribution system, an accurate generation forecasting has become important in efficient distribution planning. This paper explained method and current state of distributed power generation forecasting models. This paper presented selecting input and output variables for the forecasting model. In addition, this paper analyzed input variables and forecasting models that can use as mid-to long-term distributed power generation forecasting.
오은탁(Euntak Oh),류호성(Hosung Ryu),송규근(Kyukeun Song),정재연(Jaeyoun Jung) 한국자동차공학회 2001 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
Diesel engine, which has high thermal efficiency, is one of the major movers. Recently, as people pay attention to the environmental pollution, thc emission of Diesel engine becomes an important problem. So it is needed to understand the characteristics of diesel fuel spray injected into a combustion chamber to reduce the emission.<br/> The factor, which controls the diesel spray, is the injection pressure, engine speed and, ambient pressure. In this paper, experiments were conducted free spray for the ambient pressure (30, 40, 50MPa), the Injection Pump speed(500, 700, 900rpm) and Nozzle Injection Pressure(10, 14, 18MPa). With the higher opening pressure, the spray tip velocity and spray penetration increases while the spray angle decreases. On the other hand. as the engine speed increases. the spray angle and spray tip velocity increases while the spray tip penetration decreases. also, while the higher ambient pressure. the spray angle increases while the spray tip penetration and spray tip velocity decreases.<br/> <br/>
안병규(Byoungkyu Ahn),류호성(Hosung Ryu),오은탁(Euntak Oh),송규근(Kyukeun Song),정재연(Jaeyoun Jung) 한국자동차공학회 2001 한국자동차공학회 지부 학술대회 논문집 Vol.- No.-
Ambient gas density and Temperature effect on the width and height of Impingement spray were examined. The gas chamber density was varied 18kg/㎥ to 30kg/㎥, temperature was varied 293K to 473K. These ranges included gas density are top-dead-center conditions in current technology light-duty diesel engines. The Spray images were used to measure the impingement spray characteristics by the spray shape as the function of time and space. A mechanically actuated KP-PE type injection system was used to supply the fuel into a pressurized and heated spray chamber.<br/> With the higher density and temperature, the Impingement spray characteristic is decreased. On the other hand, The effect of temperature hardly be found in the highest density<br/> <br/>