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송영모(Youngmo Song),기완수(Wansoo Kee),이성욱(Seangwock Lee),강호인(Hoin Kang),나완용(Wanyong Rha),백두성(Doosung Baik) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
This research aims to understand combustion characteristics of pre-mixed CNG fuel inside a constant volume chamber using swirl effect, cavity shape, numbers of spark ignition and air fuel ratio. To investigate phenomena of combustion, CCD camera was applied for the visualization of the combustion and pressure and exhaust emission were measured at several equivalence ratios by regulating speeds of a swirling motor. In addition, parametric study of configuration of combustion chamber and the numbers of spark plug was made. This information may contribute to improve the performance of CNG engine and reduce emissions in the future.
이성욱(Seangwock Lee),송영모(Youngmo Song),백두성(Doosung Baik) 대한기계학회 2008 大韓機械學會論文集B Vol.32 No.7
A parametric study was made to understand the fundamentals of combustion of CNG fuel in a constant volume chamber in the respect of swirl effect, and the numbers of spark ignition. Optical devices were applied for the visualization of the physics of combustion, and combustion pressures and exhaust emission were measured at several equivalence ratios by controlling speeds of a swirling motor. When the speed of a swirling motor was raised the combustion conditions were improved. The corresponding maximum combustion pressure and heat release rate were increased and the speed of flame propagation was getting faster. This research may contribute to improve the performance of CNG engine and reduce emissions in future.