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4-밸브 엔진실린더내 연소전 텀블측정 및 거동해석
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 Title & Authors
4-밸브 엔진실린더내 연소전 텀블측정 및 거동해석
이진욱; 강건용;
Many researches have been studied on in-cylinder flow as one of dominant effects for an engine combustion. Specially because the combustion flame speed is mainly determined by the turbulence at the end of compression process, the control of charge air motion inside a cylinder by changing intake system design is very important. This paper describes experimental results of the tumble flow measurement inside the cylinder of 4-valve single cylinder transparent engine using laser Doppler velocimetry. The three intake port configurations and compression ratio were selected for changing the intake tumble motion and turbulence intensity at the compression process. This study are done with some tumble analysis parameters. Averaging tumble velocity, tumble moment, tumble area ratio and eccentricity of tumble center were used as non-dimensional parameters to analyze tumble flow structure behavior during intake and compression process. It was found that there is a correlation between the tumble flow during induction and the turbulence levels at the end of compression process
Tumble Flow;Intake Port;Compression Ratio;Transparent Engine;Turbulence Intensity;LDV;
 Cited by
SAE Paper 830226,

대한기계학회 논문집, vol.18. 10, pp.2773-2778

SAE Paper 900060,

SAE Paper 930479,

SAE Paper 900056,

Prog. Energy Combust. Sci., vol.2. pp.143-165

I. Mech. E., C51/83,