http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
최동석(D.S.Choi),김덕줄(D.J.Kim),오승묵(S.M.Oh),황의상(E.S.Hwang),정용일(Y.I.Jeong) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
The OH molecule is a highly reactive combustion intermediate and relatively abundant in combustion systems. It also has the availability of convenient UV -laser systems to excite the A²Σ-X²?? electronic transition. The spectroscopic parameters describing this transition are well known. In this research, the OH molecule was measured in the laminar flame burner and constant volume combustion chamber(CVCC) in order to use it as the fundamental data for studying combustion phenomena. The LIF images of the OH molecule in the laminar 리ame burner were caught by using KrF excimer laser and ICCD camera. The natural fluorescence<br/> of OH was also measured by the interference filter(310 nm) and spectrometer in the CVCC at different equivalence ratios.
[가솔린엔진] 엔진연소실에서 평면레이저유도형광법을 이용한 OH 라디칼 측정 연구
오승묵(S.M. Oh),고동섭(D.S. Ko) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Two dimensional images of OH radical distributions in an optical accessible engine were acquired using planar laser induced fluorescence(PLIF) method during combustion process. A broadband filter(UG 11) was used to eliminate Rayleigh scattering from laser light and OH fluorescence was imaged onto ICCD camera. OH radical is excited on Q₁(11) and P₂(8) line. The engine was fueled with special grade iso-octane, which does not fluorescence. Wrinkled flame fronts which imply turbulent flame is very clear. In some images flame islands are observed.
레이저유도형광법을 이용한 엔진실린더내 연료분포 측정기법 연구
오승묵(S.M.Oh),조규백(G.B.Cho),고동섭(D.S.Ko) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_1
Two dimensional images of mixture distributions in a optical accessible engine was acqured during intake and compression processes using planar laser-induced fluorescence(PLIF). A optical glass filter(WG305) was used to eliminate Rayleigh scattering and the fluorescence was imaged onto ICCD camera. The engine was fueled with iso-octane, which was mixed with 5% commercial gasoline as a dopant and operated under idling conditions. The fuel injection timings were differed at 0, 360, 450deg and the amount of injection was varied as A/F=17.5 and 18.5. The dopant fluoresced by the change of mixture concentrations inhomogeneously. The late injections showed more homogeneous distributions during compression process.<br/>
가솔린엔진의 밸브오우버랩 동안 밸브타이밍이 역류에 미치는 영향
오승묵(S.M.Oh),황정선(J.S.Hwang),강건용(K.Y.Kang),정용일(Y.I.Jeong),이수원(S.W.Lee),김성래(S.R.Kim),이창길(C.G.Lee) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
The backfire could be caused by the backflow of hot burned gas from the cylinder into the intake port. Especially. in the case of gaseous fuel engines. the possibility of backfire occurrence is higher since the ignition temperature is lower than that of liquid fuel.<br/> In this study. prior to conversion of gasoline engine to LPG engine. the backflow was measured at four different valve timings(type Ⅰ,Ⅱ,Ⅲ,Ⅳ) in a gasoline engine. To quantify the amount of backflow. hot wire anemometry was adopted and its signal was analyzed as the change of temperature and flow in the intake port.<br/> It was found that the backflow was decreased with increasing the engine load. When the intake valve timing was retarded. the backflow was not found nearly and the power was decreased a little at low engine speed.<br/>
서승우(S.W.Suh),정동수(D.S.Jeong),오승묵(S.M.Oh),최교남(K.N.Choi) 한국자동차공학회 1993 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
CNG engine, well favored as a excellent engine fuel, can be operated in bi-fuel, dual fuel, and single fuel dedicated CNG modes. Having several merits in the viewpoints of the wide driving range due to the running possibility by using only diesel fuel, and no major modification on the engine, mechanical system is developed for the conversion of 3.5L 4 cylinder diesel engine installed in 2.5 ton truck. <br/> In this study, we have tested the characteristics of power, fuel consumption, and emission with both prototype engine and vehicle.<br/>
가스/디젤 dual fuel 엔진에서 기계식과 semi 전자식 공연비 제어방식의 특성연구
정동수(D.S.Jeong),서승우(S.W.Suh),오승묵(S.M.Oh),최교남(K.N.Choi) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.6_1
By utilizing CNG(compressed natural gas) as the alternative fuel to a diesel engine, it is certainly possible to reduce the particulates, soot and NOx from diesel emissions.<br/> CNG-diesel dual fuel engine is more effective and adquate to decrease the vehicle emission specially in heavy urban traffic, because it has several merits in the view points of easy conversion, fuel economy, abundant energy source, and convenient driving at the area where fuel refilling system is deficient.<br/> In this study, we have developed 2 kinds of dual fuel supply system for natural gas and diesel, as mechanical mixer type and semi electronic type. The performance evaluation and characteristics have been compared each other.<br/>