Visualization of the Flow Inside the Transfer Channels of Small Two-Stroke Cylinders

A method is presented which allows the investigation of the flow inside the cylinder and the transfer channels of small two-stroke cylinders under the condition of an expanded time scale by using the similarity laws. A test rig has been designed to incorporate the application of visualization techniques as well as quantitative measurement systems like LDV or PIV. The results obtained by this method are needed to understand the complex nature of the three-dimensional flow inside the cylinder and can be used to verify CFD calculations. Moreover, modifications can be applied to the model in an easy and fast manner, which enables the designer to examine various versions during the early stage of the development process.