The effect of the intake port configuration on the flow and combustion in a LF-valve pentroof gasoline engine

The flow field in a cylinder of a 4-valve pentroof engine is studied using the KIVA-3V code. Turbulence is generated from the jet flow through valves and broken down to the small scale eddies in the compression process. It is known that the tumble effectively keeps turbulence during the compression process. In the combustion process, turbulence is known to enhance flame sp eed by increasing mass, momentum and heat transfer rates. The effects of th e intake port angles on the flow and combustion characteristics are studied in this study. To study the effect of turbulence on the combustion process , Cantore combustion model is applied in this study.