http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
밸브위치에 따른 4밸브 엔진 연소실 내부의 스월비와 텀블비의 거동
김성준,이천식,전봉준,이용일,Kim, Sung-Joon,Lee, Chon-Sik,Chun, Bong-Jun,Lee, Yong-Il 강원대학교 산업기술연구소 1999 産業技術硏究 Vol.19 No.-
This research has an object to find out how the position of inlet valve influence swirling and tumbling of turbulence inside the combustion chamber of 4 valve engine. The computational analysis of three dimensional complicated turbulence flow in the cylinder is done by the KIVA-3V program to carry out this object. One use 6 valve positions with the bowl type of piston cavity. The swirl ration and the tumbling ratio of flow filed are evaluated quantitatively to find out how each valve position influence flow phenomena in the combustion chamber during the intake and compression processes.
吸氣管 內에 空氣噴射가 터보過給디젤機關의 급가속시 應答特性에 미치는 影響
용호택,전봉준 서울産業大學校 1997 논문집 Vol.45 No.1
본 연구는 터보 과급기 부착 디젤 기관의 급가속 운전시 기관과 과급기의 과도 응답 성능을 규명하고 이를 개선하기 위한 실험을 수행하였다. 과도 응답 성능 규명은 일정한 회전 속도로 정상 운전 중인 기관의 연료 펌프 랙을 10%에서 40%까지 일정시간동안 급가속하였을 경우에 대하여 수행하였으며, 이 때의 과급기 응답 지연 현상을 개선하기 위한 실험은 급가속과 동시에 압축기 출구의 흡기메니폴드 내에 일정한 압력의 공기를 추가 분사하는 방법을 이용하였다. 그리고 공기 분사 압력, 공기 분사 기간, 가속률, 가속 시간 등이 압축기 출구의 압력과 온도, 터빈 입구의 압력과 온도, 실린더 압력, 기관과 과급기 회전 속도 등의 응답 성능에 미치는 영향을 가속전 정상 상태의 기관 회전 속도와 적용 부하의 변화에 따라 시간의 함수로 나타내었다.
吸氣管 內에 空氣噴射가 터보過給디젤機關의 過渡性能改善에 미치는 影響
용호택,전봉준,최낙정 서울産業大學校 産業大學院 1995 大學院論文集 Vol.3 No.-
This study investigates the characteristics of transient response in a turbocharged diesel engine by using the computer simulation with experiments. Experimental study on the engine system is carried out to examine the validity of numerical analysis, and the predicted results are compared with experimental data at various conditions. Further, experiment for improving the low speed torque and acceleration performance is also performed by means of injecting air in the inlet manifold. The effects of air injection on the response performance are investigated at various conditions such as injection pressure, injection period, accelerating time, accelerating rate, load and engine speed.
한덕수,장영민,전봉준,김성준 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.A
As an automobile fuel, LPG has many environmental advantages compared to gasoline or diesel. However, current LPG engine which is provided with LPG fuel as gas form has lower power and worse fuel efficiency than gasoline engine. These problems of low power and bad fuel efficiency come from lower volumetric efficiency. Also there is a new rising problem of high failure ratio in an engine emission test. Although there are many factors which affect engine performance of exhaust gas emission, one believes that the fact that ECM of gasoline engine is used for LPG engine when retrofitting gasoline engine to LPG engine is one of the main problems, which lower engine power and emit more noxious gas due to wrong ignition timing. To solve these problems, one studied the effects of ignition timing on the exhaust gas to find out the optimum condition of ignition timing. The experimental results show that noxious exhaust gas is reduced and engine power is increased if the optimum control of ignition timing is applied in accordance to the revolution speed of engine.