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엔진 실린더내 스월 및 스퀴시유동장 LDV 측정 및 해석
이진욱(J.W.Lee),강건용(K.Y.Kang),정동수(D.S.Jeong),정용일(Y.I.Jeong),박승주(S.Z.Park) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
Since the combustion process and the pollutant formation in an engine are dealt with paying special emphasis on flow motion and turbulent mixing in combustion chamber, both the bulk flow motion and the turbulence characteristics of the flow are very important. This study presents experimental results of the swirl flow and the squish flow generated the end of compression process and analysis of flow motion phenomina, mean velocity, angular momentum and turbulence intensity.<br/>
이진욱(J.W.Lee),강건용(K.Y.Kang),박승주(S.Z.Park),박정규(J.K.Park) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
The pent-roof geometry of the cylinder head in a four-valve engine has been known to be favorable to the tumbling motion. The formation of a tumbling vortex is an effective way to enhance pre-ignition turbulence and it eventually promotes faster burning rates. This study presents experimental results of the tumble flow structure, including the flow motion phenomena, tumble mean velocity, angular momentum and turbulence intensity. Two four-valve cylinder heads were selected for changing tumble flow intensity and the tumble velocity was obtained under motoring conditions (at 1000rpm) by LDV measurement<br/>