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[디젤엔진] 이색법을 이용한 직접 분사식 디젤엔진의 화염 온도 및 Soot 분포 측정에 관한 실험적 연구(Ⅱ)
정수훈(Chung S.H.),박정규(Park J.k.),원영호(Won Y.H.) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Two dimensional flame temperature and KL value distribution from the luminous flames containing soot in a DI diesel engine were measured by the two-color method using two different wavelengths of the flame image. The combustion chamber of a DI diesel engine was visualized by elongating the piston and cylinder and the flame in the combustion chamber was photographed on a nega-color film using a high speed camera. In this study, color CCD camera was used to digitize the three color density of the film exposed to the flame and standard lamp. The accuracy of the measuring method depends on the calibration line of film made from a high temperature standard tungsten lamp. The formation and oxidization of soot in the diesel engine were studied by observing measured time history of KL factor and flame temperature. Also, effects of various shapes of combustion chamber and fuel injection on flame temperature and KL value distribution were examined.
열선 점화를 이용한 디젤 입자상 트랩의 자력 재생에 관한 수치적 시뮬레이션
정수훈(S. H. Chung),박정규(J. K. Park),정인승(I. S. Chung) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_2
A mathematical model for self-supporting regeneration of diesel particulate filter was developed here in order to describe the processes which take place in the fi1ter after ignition by electric wire heating. The soot is ignited by heating wire at front part of the channel, the flame is propagated and the soot is burned through the channel, In the model, the heating by the electric wire was treated as uniform heat source. Various numerical tests were performed to demonstrate how regeneration factors affect regeneration process and obtain data which need to filter.
이색법을 이용한 직접 분사식 디젤엔진의 화염 온도 및 Soot 분포 측정에 관한 실험적 연구
조성용(Cho S.Y),정수훈(Chung.S.H),주원석(Joo.W.S),박정규(Pakr.J.K) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
In this study, the flame temperature and KL value distribution in a DI diesel engine were measured by the two-color method. The accuracy of the temperature calibration of the measuring equipment was assured by characteristic curve of film made from a high temperature standard tungsten ramp. First, piston and cylinder of DI diesel engine were elongated and diesel flame in combustion chamber was photographed by a high speed camera on a nega-color film. The two-dimensional temperature and KL value distribution can be calculated from the radiant intensities on a nega-color film by using an image processing. The flame temperature and KL value were measured on various combustion chamber shapes.<br/>
열선 점화를 이용한 디젤 입자상 트랩의 자력 재생에 관한 수치적 시뮬레이션
박정규,정수훈 慶尙大學校 工科大學 機械設計學科 1997 WORKSHOP 자료집 Vol.1997 No.1
A mathematical model for self supporting regeneration of diesel particulate filter was developed here in order to describe the processes which take place in the filter after ignition by electric wire heating. The soot is ignited by heating wire at front part of the channel, the flame is propagated and the soot is burned through the channel. In the model, the heating by the electric wire was treated as uniform heat source. Various numerical tests were performed to demonstrate how regeneration factors affect regeneration process and obtain data which need to filter.
박정규,정수훈,정재모 건국대학교 산업기술연구원 1998 건국기술연구논문지 Vol.23 No.-
The processes of combustion in a direct-injection diesel engine was studied experimentally at a 1000rpm engine speed. An optically accessible engine was made by elongating the piston and cylinder and using transparent piston head. Combustion flame pictures in D.I. diesel engine were taken by a high speed camera. The ignition, combustion propagation, extinction were investigated and the pressure in the combustion chamber was measured for three different bowl shape. The autoignition occured near the TDC and most active combustion flame were found near ATDC 12˚, which varied by the bowl model. The crank angle which the most active combustion were found agrees well with the peak pressure point.