Many researches of in-cylinder flow have been carried out, which played a large role in engine combustion. In this study the measurements of tumble flow were made for motoring condition(1000rpm) using laser Doppler velocimetry to investigate the in-cy...
Many researches of in-cylinder flow have been carried out, which played a large role in engine combustion. In this study the measurements of tumble flow were made for motoring condition(1000rpm) using laser Doppler velocimetry to investigate the in-cylinder flow with the change of intake port and compression ratio especially, during the intake and compression process. To further consider the tumble structures developed and decayed inside cylinder, several parameters were introduced which consisted of tumble averaging velocity, tumble area ratio, tumble moment and the eccentricity of tumble center. In this research available results about the optimal intake port configuration are obtained, which can be suitable guide line in the analysis of the tumble flow characteristics.