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A Numerical Investigation of the Effect of Inlet Charge Direction on the Scavenging Behavior of a Two-Stroke Engine
Published January 09, 1996 by Institution of Mechanical Engineers in United Kingdom
In a two-stroke engine, the transfer ports play an important role in ensuring that the incoming jets of fresh charge to the cylinder are directed at optimum angles. In this study CFD predictions were made to investigate the influence of the inlet jet flow angles on the flow characteristics in a generic cylinder. Experiments were performed with an engine motored at 1500 rpm to obtain transient pressure data. The mass flux calculated from the pressure data was used to provide the boundary conditions used for the calculations. CFD simulations with the inlet jets directed at various horizontal and vertical angles were made and the effects are compared.