Numerical Analysis of Gas Exchange and Combustion Process in a Small Two-Stroke Gasoline Engine 2001-01-3602
This paper analyses the scavenge process of a conventional two-stroke engine in order to find ways to significantly reduce the scavenge losses by applying a combination of 1D and 3D simulation procedures. A special evaluation method was developed which allows a clear distinction between the main hydrocarbon loss mechanisms. Furthermore, the paper presents an approach to simulate the highly turbulent combustion at a speed of 9000 rpm. The results of the numerical investigations are compared with experimental results.
The engine chosen for this purpose was a 64 cm3 four-port production two-stroke engine. The CFD calculations were performed using the finite volume CFD code STAR-CD. The mesh generation process was automated using pro*am. Combustion was modelled with the one-equation Weller flamelet model.
The results of the present study show that the combination of 1D and 3D simulation procedures is a powerful tool for further investigations (e.g. stratified charge, GDI).
Citation: Mugele, M., Tribulowski, J., Peters, H., Spicher, U. et al., "Numerical Analysis of Gas Exchange and Combustion Process in a Small Two-Stroke Gasoline Engine," SAE Technical Paper 2001-01-3602, 2001, https://doi.org/10.4271/2001-01-3602. Download Citation
M. Mugele, J. Tribulowski, H. Peters, U. Spicher, H. Rosskamp
University of Karlsruhe, Andreas STIHL AG & Co.
Spring Fuels & Lubricants Meeting & Exhibition
SAE International Fall Fuels & Lubricants Meeting & Exhibition
Engine Modeling Techniques: SI and Diesel-SP-1711, Modeling Techniques for Diesel and SI Engines-SP-1648, SAE 2001 Transactions Journal of Engines-V110-3