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A Simulation Model for Direct-Fuel-Injection of Two-Stroke Gasoline Engines
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Abstract
In order to assist engine design through a better understanding of the direct-fuel-injection of two-stroke gasoline engines, a simulation model has been established using a multidimensional CFD code. Two-phase flow in the changing geometry of the engine was evaluated. To obtain a developed fluid flow field for the fuel-injection cases, two full engine cycles were computed. Two cases were analyzed, one with the injector at the cylinder head and the other at the cylinder side wall. The gas flow field, fuel droplet distribution and fuel vapor concentration were obtained and compared for the two cases.
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Yu, L., Campbell, T., and Pollock, W., "A Simulation Model for Direct-Fuel-Injection of Two-Stroke Gasoline Engines," SAE Technical Paper 970366, 1997, https://doi.org/10.4271/970366.Also In
References
- Jante A. “Scavenging and other problems of two-stroke cycle spark-ignition engines,” SAE Paper 680468 1968
- Yu L. Campbell T. Pollock W. Marconi P. “Exhaust emission control with direct multi-point fuel-injection of a small two-stroke engine,” Lean Burn Combustion Engines IMechE 165 185 1996
- Freitas C.J. “Perspective: selected benchmarks from commercial CFD codes,” Transactions of ASME, Journal of Fluids Engineering 117 2 208 218 1995
- Sher E. “Scavenging the two-stroke engine,” Progress in Energy and Combustion Science 16 95 124 1990
- Campbell T. Yang J. Ren Z. Yu L. “Engine design and development at GCU,” Reducing Engine Development Time: The influence of modern design tools IMechE 1995
- Yu L. Campbell T. Hoare R. “Object-oriented computer simulation of turbocharged engine performance,” Engineering Computation and Computer Simulation 1 433 442 1995
- Sweeney M.E.G. Swann G.B.G. Kenny R.G. Blair G.P. “Computational fluid dynamics applied to two-stroke engine scavenging,” SAE Paper 851519 1985
- Ahmadi-Befrui B. Brandstatter W. Kratochwill H. “Multidimensional calculation of the flow processes in a loop-scavenged two-stroke cycle engine,” SAE Paper 890841 1989
- Kato S. Nakagawa H. Kawahara Y. Adachi T. Nakashima M. “Numerical analysis of the scavenging flow in a two-stroke-cycle gasoline engine,” JSME International Journal 34 3 385 390 1991
- Tsui Y.Y. Cheng H.P. “Flow calculation in a loop-scavenged two-stroke motored engine,” International Journal of Numerical Methods for Heat and Fluid Flow 4 3 249 267 1994
- Tsui Y.Y. Cheng H.P. “Tumbling flow in loop-scavenged two-stroke engines,” Transactions of the ASME, Journal of Fluids Engineering 117 4 628 632 1995
- Smyth J.G. Kenny R.G. Blair G.P. “Motored and steady flow boundary conditions applied to the prediction of scavenging flow in a loop scavenged two-stroke cycle engine,” SAE Paper 900800 1990
- Yu L. Cheng X. “Initial separation point predictions of three dimensional boundary layers in radial vaneless diffusers,” Transactions of CSEngTP, Journal of Engineering Thermo-Physics 10 4 406 410 1989
- Cheng X. Yu L. Wu X. “Flow mechanism of curved pipe type laminar-flow cooling system,” Transactions of CSMet, Gang Tie (Journal of Iron and Steel) 29 11 59 63 1994
- Yu L. Campbell T. Mokhtarzadeh-Dehghan M.R. “Finite element analysis of the turbulent flow through a conical valve,” First Int. Con. on Engineering Computation and Computer Simulation Changsha 23-27 November 1995
- Epstein P.H. Reitz R.D. Foster D.E. “Computations of a two-stroke engine cylinder and port scavenging flows,” Two-Stroke Engine Design and Development 89 104 SAE Paper 910672 1991
- Lai Y.G. Przekwas A.J. Sun R.L.T. “Three-dimensional computation of the scavenging flow process in a motored two-stroke engine,” SAE Paper 930499 1993
- Amsden A.A. Orourke P.J Butler T.D. Meintjes K. Fansler T.D. “Comparisons of computed and measured three-dimensional velocity fields in a motored two-stroke engine,” Two-Stroke Engine Diagnostics and Design 27 44 SAE Paper 920418 1992
- Haworth D.C. Huebler M.S. El Tahry S.H. Matthes W.R. “Multidimensional calculations for a two-stroke-cycle engine: a detailed scavenging model validation,” SAE Paper 932712 1993
- Ellul I.R. Issa R.I. “Prediction of the flow of interspersed gas and liquid phases through pipe bends,” Chemical Engineering Research & Design 65 1 84 96 1987
- Blair G.P. The Basic Design of Two-Stroke Engines SAE Publications Group Warrendale, PA 1990
- Diwakar R. Fansler T.D. French D.T. Ghandhi J.B. Dasch C. J. Heffelfinger D. M. “Liquid and vapor fuel distributions from an air-assist injector - an experimental and computational study,” SAE Paper 920422 1992
- Kuo T.W. Reitz R.D. “Three-dimensional computations of combustion in premixed-charge and direct-injected two-stroke engines,” SAE Paper 920425 1992
- Franco A. Martorano L. Stan C. Eichert H. “Numerical analysis of the performances of a small two-stroke engine with direct injection,” SAE Paper 960362 1996
- Reitz R.D. Rutland C.J. “Development and testing of diesel engine CFD models,” Progress in Energy and Combustion Science 21 173 196 1995
- Bracco D.L. “Modeling of engine sprays,” SAE Paper 850394 1985
- Gosman A.D. Ioannides S.I. “Aspects of computer simulation of liquid-fueled combustors,” AIAA Journal of Energy 7 6 482 490 1983