This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Small-Scale Flow Rig for Swirl Studies of a Single-Valve, Reverse Uniflow 2S Engine
Technical Paper
2008-01-0609
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
A small-scale flow rig has been constructed to investigate the swirl behavior of various intake manifold configurations. This effort is to support the development of a 10cc-size, single-valve reverse uniflow 2S engine. In this reverse uniflow geometry the incoming charge enters through a single valve in the engine head, and the burned gases are exhausted through symmetrically-arranged ports in the cylinder wall near bottom dead center. Port-directioning of the fresh charge, used in conventional (bottom-up) uniflow arrangements, is not available with this geometry, so another means to control the cylinder sweeping is sought. The flow rig has been constructed on a 2:1 scale, and three preliminary intake manifold configurations have been prototyped using a 3D printing machine. A straight manifold, a ramped tangential manifold and a basic helical design were manufactured. The rig has used charging pressures up to 0.75 bars above ambient where the swirl, flow and discharge coefficients can be characterized for various designs. PIV studies of the in-cylinder fluid dynamics, including recirculation regions near the valve, are also possible through the use of fused silica piping for the cylinder.
Recommended Content
Citation
Johnson, M. and Scott Goldsborough, S., "A Small-Scale Flow Rig for Swirl Studies of a Single-Valve, Reverse Uniflow 2S Engine," SAE Technical Paper 2008-01-0609, 2008, https://doi.org/10.4271/2008-01-0609.Also In
References
- Goldsborough, S. Van Blarigan, P. “A numerical study of a free piston IC engine operating on homogeneous charge compression ignition combustion,” SAE Technical Paper 1999-01-0619
- Goertz, M. Ping, L. “Free Piston Engine: Its Application and Optimization,” SAE Technical Paper 2000-01-0996
- Tikkanen, S. Lammila, M. Herranen, M. Vilenius, M. “First Cycles of the Dual Hydraulic Free Piston Engine,” SAE Technical Paper 2000-01-2546 2000
- Larmi, M. Isaksson, S. Tikkanen, S. Lammila, M. “Performance Simulation of a Compression Ignition Free Piston Engine,” SAE Technical Paper 2001-01-0280 2001
- Goldsborough, S. Van Blarigan, P. “Optimizing the Scavenging System for a Two-Stroke Cycle Free Piston Engine for High Efficiency and Low Emissions: A Computational Approach” SAE Technical Paper 2003-01-0001 2003
- Fredriksson, J. Denbratt, I. “Simulation of a Two-Stroke Free Piston Engine,” SAE Technical Paper 2004-01-1871 2004
- Kleemann, A.P. Dabadie, J.-C. Heriot, S. “Computational Design Studies for a High-Efficiency and Low-Emissions Free Piston Engine Prototype,” SAE Technical Paper 2004-01-2928 2004
- Caresana, F. Comodi, G. Pelagalli, L. “Design Approach for a Two-Stroke Free Piston Engine for Electric Power Generation,” SAE 2004-32-0037 , SAE Technical Paper 2004
- Brusstar, M. Gray, C. Jr., Jaffri, K. McCarthy, P. Pomerleau, M. “Design, Development and Testing of Multi-Cylinder Hydraulic Free-Piston Engines,” SAE Technical Paper 2005-01-1167
- Fredriksson, J. Bergman, M. Golovitchev, V. Denbratt, I. “Modeling the Effect of Injection Schedule Change on Free Piston Engine Operation,” SAE Technical Paper 2006-01-0449 2006
- Moriyoshi, Y. Kukuchi, K. Morikawa, K. Takimoto, H. “Numerical Analysis of Mixture Preparation in a Reverse Uniflow-Type Two-Stroke Gasoline DI Engine,” SAE Technical Paper 2001-01-1815 2001
- Moriyoshi, Y. Kukuchi, K. Morikawa, K. Takimoto, H. “Development and Evaluation of a Reverse Uniflow-Type Two-Stroke Gasoline DI Engine,” SAE Technical Paper 2001-01-1839 2001
- Moriyoshi, Y. Morikawa, K. Takimoto, H. “Analysis of Mixture Formation Process in a Reverse Uniflow-Type Two-Stroke Gasoline DI Engine,” SAE Technical Paper 2002-32-1774 2002
- Moriyoshi, Y. Arai, M. Katsuta, J. Morikawa, K. “Performance Tests of Reverse-Uniflow-Type, Two-Stroke Direct Injection Gasoline Engine,” SAE Technical Paper 2004-32-0040 2004
- Moriyoshi, Y. Arai, M. Katsuta, J. Morikawa, K. “Performance Analysis of Reverse-Uniflow-Type, Two-Stroke Direct Injection Gasoline Engine,” SAE Technical Paper 2004-08-0088 2004
- Kawashima, J. Ogawa, H. Tsuru, Y. “Research on a Variable Swirl Intake Port for 4-Valve High-Speed DI Diesel Engines,” SAE Technical Paper 982680 1998
- Li, Y. Li, L. Xu, J. Gong, X. Liu, S. Xu, S. “Effects of Combination and Orientation of Intake Ports on Swirl Motion in Four-Valve DI Diesel Engines,” SAE Technical Paper 2000-01-1823 2000
- Page, V.J. Blundell, G.D. “The application of design of experiments and CFD to the optimization of a fully parametric helical port design,” SAE Technical Paper 2000-04-0367 2000
- Shuliang, L. Yufeng, L Zhenzhong, Z. Lihong, R. Haodong, Z Jie, S. Songfang, Z. “An Investigation of the Effects of Manufacturing Deviations of Helical Inlet Port on the Flow Characteristics of DI Diesel Engines,” SAE Technical Paper 2001-01-3507 2001
- Pastor, J.V. Margo, X. Gil, A. Donayre, J.C. “A Methodology to Estimate the Swirl Number at TDC in DI Diesel Engines: Through the Combination of CFD and Steady Flow Rig Results,” SAE Technical Paper 2004-01-1876 2004
- Kulkarni, Y. Mone, M. Desai, A. Markandeya, S. Nayak, N. Aghav, Y. Sohi, N.S. Dani, A.D. “Optimization of Inlet Port Performance on Emission Compliance of Naturally Aspirated DI Diesel Engine,” SAE Technical Paper 2005-26-010 2005
- http://www.zcorp.com/
- Kee, R.K. McEntee, P.T. Blair, G.P. Fickenscher, T. Hölzer, J. Douglas, R. “Validation of two-stroke engine simulation by a transient test method,” SAE Technical Paper 978510 1997
- McElligott, S. Douglas, R. Kenney, R.G. Glover, S. “An assessment of a stratified scavenging process applied to a loop-scavenged, two-stroke engine,” SAE Technical Paper 1999-01-3272 1999
- Millo, F. Gallone, A. Mallamo, A. “Experimental and Computational Analysis of a Tuned Exhaust System for a Small Two-Stroke Engine,” SAE Technical Paper 1999-01-3329 1999
- Kuwahara, K. Watanabe, T. Tanada, H. Ueda, K. Ando, H. Yokoe, M. “Intake-Port Design for Mitsubishi GDI Engine to Realize Distinctive In-Cylinder Flow and High Charge Coefficient,” SAE Technical Paper 2000-01-2801 2000
- Li, Y. Li, L. Xu., J. Gong, X. Liu, S. Xu., S. “Effects of combination and orientation of intake ports on swirl motion in four-valve DI diesel engines,” SAE Technical Paper 2000-01-1823 2000
- Yun, J.-E. Lee, J.-J. “A study on combined effects between swirl and tumble flow of intake port system in cylinder head,” SAE Technical Paper 2000-05-0098 2000
- Torregrosa, A.J. Galindo, J. Payri, R. Climent, H. Gaia, C. “Modeling the exhaust system in two-stroke small engines,” SAE Technical Paper 2001-01-3317 2001
- Auriemma, M. Corcione, F.E. Diana, S. Police, G. Valentino, G. “Investigation of the intake tumble flow in a prototype GDI engine using a steady-state test rig,” SAE Technical Paper 2001-24-0022 2001
- Lee, K. Lee, C. Joo, Y. “Optimization of the intake port shape for a five-valve gasoline engine,” Proceedings of the Institute of Mechanical Engineers, Part D 5 739 746 2001
- Li, Y. Zhao, H. Leach, B. Ma, T. Ladommatos, N. “Optimisation of In-Cylinder Flow for Fuel Stratification in a Three-Valve Twin-Spark-Plug SI Engine,” SAE Technical Paper 2003-01-0635 2003
- Stuecke, P. Egbers, C. Geyer, W. “Visualization of the flow inside the transfer channels of small two-stroke cylinders,” SAE Technical Paper 2003-32-0008 2003
- Algieri, A. Bova, S. De Bartolo, C. “Global Flow Characterization of a Four Cylinder Spark Ignition Engine during the Intake Phase,” SAE Technical Paper 2005-24-075 2005
- Chaillou, C. Roy, R. Druault, Ph. Guibert, Ph. “Swirl characterization in steady and unsteady flows with PIV measurements,” International Journal of Vehicle Design 39 4 383 402 2005
- Thobois, L. Rymer, G. Soulères, T. Poinsot, T. Van den Heuvel, B. “Large-eddy simulation for the prediction of aerodynamics in IC engines,” International Journal of Vehicle Design 39 4 368 382 2005
- Fleck, B. Fleck, R. Kee, R.J. Hu, X. Foley, L. Yavuz, I. “CFD Simulation and Validation of the Scavenging Process in a 125cc 2-Stroke Racing Engine,” SAE Technical Paper 2006-32-0061 2006
- Kim, M. Lee., S. Kim., W. “Tumble Flow Measurements Using Three Different Methods and Its Effects on Fuel Economy and Emissions,” SAE Technical Paper 2006-01-3345 2006
- Guy, R.K. Stanglmaier, R.H. “Steady-state intake flow in a high-performance V-twin engine,” ASME Paper ICES2006-1326 2006
- Payri, F. Galindo, J. Climent, H. Pastor, J.M. Gaia, C. “Optimisation of the Scavenging and Injection Processes of an Air-Assisted Direct Fuel Injection 50 cc. 2-Stroke S.I. Engine by Means of Modelling,” SAE Technical Paper 2001-01-1814 2001
- Gustafsson, R.U.K. Blair, G.P. Jonsson, B.I.R. “Reducing exhaust emissions and increasing power output using a tuned exhaust pipe on a two-stroke engine,” SAE Technical Paper 2001-01-1853 2001
- Chiatti, G. Chiavola, O. “Integrated numerical-experimental method in high-speed 2T gasoline engine design and refinement,” SAE Technical Paper 2001-01-1855 2001
- Riegler, U.G. Bargende, M. “Direct coupled 1D/3D-CFD-computation (GT-Power/Star-CD) of the flow in the switchOver intake system of an 8-cylinder SI engine with external exhaust gas recirculation,” SAE Technical Paper 2002-01-0901 2002
- Zeng, Y. Strauss, S. “Modelling of scavenging and plugging in a twin-cylinder, two-stroke engine using CFD,” SAE Technical Paper 2003-32-0020 2003
- Zeng, Y. Strauss, S. Lucier, P. Craft, T. “Predicting and Optimizing Two-Stroke Engine Performance Using Mulidimensional CFD,” SAE Technical Paper 2004-32-0039 2004
- Bozza, F. Gimelli, A. “A Comprehensive 1D model for the simulation of a small-size, two-stroke SI engine,” SAE Technical Paper 2004-01-0999 2004
- Onorati, A. Cerri, T. Ceccarani, M. Cacciatore, D. “Experimental Analysis and 1D Thermo-Fluid Dynamic Simulation of a High-Performance Lamborghini V10 S.I. Engine,” SAE Technical Paper 2005-24-081 2005
- Rothbauer, R.J. Almbauer, R.A. Schmidt, S.P. Margelik, R.H. Glinsner, K. “A Multidimensional Interface for the Predictive CFD Simulation of the 2-Stroke Engine,” SAE Technical Paper 2006-32-0059 2006
- Fleck, B. Fleck, R. Kee, R.J. Hu, X. Foley, L. Yavuz, I. “CFD Simulation and Validation of the Scavenging Process in a 125cc 2-Stroke Racing Engine,” SAE Technical Paper 2006-32-0061 2006
- Bosman. C.B. Goldsborough, S.S. “Development of a 10-cc single-valve, reverse-uniflow, 2S engine,” SAE Paper 2008-01-0953 2008
- Annand, W.J.D. Roe, G.E. Gas Flow in the Internal Combustion Engine Haessner Publishing Newfoundlandd, N.J. 1974
- Monaghan, M.L. Pettifer, H.F. “Air Motion and Its Effect on Diesel Performance and Emissions,” SAE Technical Paper 810255 1981