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이용규(Y G Lee),김만식(M Kim),한성주(S J Han),민경덕(K Min),김응서(E S kim) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_1
3D computation was performed to predict the knock onset angle and autoignition location in a commercial 3-valve pent-roof type spark ignition engine. Weller's combustion model and reduced chemical mechanism of hydrocarbon fuels in the low temperature which was proposed by Keck and Hu were combined to simulate the flame propagation and autoignition of unburned gas. In order to verify the numerical results by experiments, pressure transducer and 11 ion probes were installed in the cylinder head. Autoignition location could be determined from the knock onset angle determined by cylinder pressure and flame arrival time determined by ion probes. The pressure traces and flame arrival time of numerical results were compared with the experiments. The numerical results were in good agreements with the experiments. Therefore knock onset time and its location could be predicted.<br/>