This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Effect of Ports Configuration on Trapping Efficiency of a Two-Stroke Engine - A CFD Analysis
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 11, 2011 by SAE International in United States
Annotation ability available
In this study, an attempt has been made to estimate trapping efficiency of a two-stroke engine by CFD analysis under cold flow conditions. A single-cylinder, loop-scavenged, spark-ignition, two-stroke engine extensively used for two-wheeler application in India is being considered for the analysis. Engine geometry is modeled using commercial PRO-E software. Simulation is carried out using commercial CFD code STAR-CD. The CFD predictions are validated by available experimental data. In the present study, the trapping efficiency is estimated at various engine speeds with change in configurations of ports. From the analysis of results, it is found that, increasing exhaust port area relative to total transfer port area and engine speeds increase the trapping efficiency significantly. In general, it is possible to increase the trapping efficiency by about 4% at the engine speeds considered.
CitationMallikarjuna, J., Addepalli, K., Ramachandra Babu, Y., and Kumar, D., "Effect of Ports Configuration on Trapping Efficiency of a Two-Stroke Engine - A CFD Analysis," SAE Technical Paper 2011-24-0153, 2011, https://doi.org/10.4271/2011-24-0153.
- Bakshi, S. Anand, T. N. C. Ravikrishna, R. V. 2007 In-Cylinder Charge Stratification and Fuel-air Mixing in a New, Low-Emission Two-Stroke Engine Institution of Mech., Engg., (IMechE.,), Journal of Engine Research
- Kenny, R. G. 1992 Developments in two stroke cycle engine exhaust emissions Institution of Mech., Engg., (IMechE.,) 206
- Obodeh, O. Ogbor, A. D. 2009 Improving the Performance of Two-Stroke Motorcycle with Tuned Adjustable Exhaust Pipe Research Journal of Applied Sciences, Engineering and Technology 1 2 59 65
- Dang, D. Wallace, F. J. 1992 Some Single Zone Scavenging Models For Two Stroke Engines International Journal for Mechanical Sciences 34 8 595 604
- John, Heywood B. 1988 Internal Combustion Engine Fundamentals McGraw Hill International Editions
- Hori, H. “Scavenging Flow Optimization of Two Stroke Diesel Engine by Use of CFD,” SAE Technical Paper 2000-01-0903 2000 10.4271/2000-01-0903
- Ciccarelli, G. Reynolds, S. Olliver, P. 2010 Development of a Novel Passive Top-Down Uniflow Scavenged Two-Stroke GDI Engine Experimental Thermal and Fluid sciences 34 217 226
- Chehroudi, B. Schuh, D. 1995 Intake-Port Flow Behaviour in a motored and Fired Two-stroke Research Engine Experimental Thermal and Fluid Science 86 100
- STAR-CD and es-ice Manuals 2010
- Bakshi, S. Ravikrishna, R. V. 2003 Multidimensional simulation of the air-flow and fuel transport process in the air-assisted injection system of a new, low-emission two-stroke engine Institution of mechanical engineers, (IMechE), Journal of Automobile engineering 217
- Versteeg, H. K. Malalasekera, W. 1995 An Introduction to Computational Fluid Dynamics Longman Scientific and Technical
- Barton, I. E. 1998 Comparison of SIMPLE and PISO Type Algorithms for Transient Flows International Journal for Numerical Methods in Fluids 26 459 483
- Francisco, B. Santos, A. Gregorio, J. 2010 Computational Analysis of scavenging of a two-stroke opposed Piston Diesel Engine Proceedings of the World Congress on Engineering II
- Vimaldas, J. V. 2010 Experimental Study and Analysis of Scavenging Efficiency in a Two Stroke Moped Engine M. Tech., Thesis Indian Institute of Madras Chennai, India
- Jante, A. “Scavenging and Other Problems of Two-Stroke Cycle Spark-Ignition Engines,” SAE Technical Paper 680468 1968 10.4271/680468