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New Trends in Combustion System Design of Light Duty Diesel Engines Inferred by Threedimensional C.F.D. Computations
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Abstract
In the present paper some results, obtained by the use of modern numerical C.F.D tools, are presented. In particular, starting from the experimental characterization of a conventional design D.I. diesel engine, the empirical constants of the different submodels were tuned to obtain satisfactory results in some key test conditions. After that, in the same points of the engine performance map, the following parameters were systematically varied:
- Fuel injection system design and operating conditions
- Intake swirl level
- Exhaust gas recirculation level.
The influence of each parameter on combustion evolution is discussed and the most promising trend for the engine optimization is presented. Taking into account the model formulations limits, the results obtained suggest, from a theoretical point of view, that “common rail” equipped light duty diesel engines are suitable to meet the future European emission regulations. In particular the numerical analysis demonstrate that the emission potential of common rail engines is positioned between 2001 and 2005 emission limits. The last stage of emission regulations can be achieved only with further massive research activities
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Citation
Beatrice, C., Belardini, P., Bertoli, C., and Del Giacomo, N., "New Trends in Combustion System Design of Light Duty Diesel Engines Inferred by Threedimensional C.F.D. Computations," SAE Technical Paper 982461, 1998, https://doi.org/10.4271/982461.Also In
References
- Stummp G. Ricco M. “Common Rail - An Attractive Fuel Injection System for Passenger Car DI Diesel Engines” SAE Paper 960870 1996
- Guerrassi N. Dupraz P. “A Common Rail System for High Speed Direct Injection Diesel Engines” SAE Paper 9808803 1998
- Beatrice C. Belardini P Bertoli C. Cameretti M.C. Del Giacomo N. “An Assesement of Predictivity of CFD Computations of Combustion and Pollutants Formation in D.I. Diesel Engines” SAE Paper 962055 1996
- Patterson M.H. Kong S.C. Hampson J.H. Reitz R.D. “Modelling the Effects of Fuel Injection Characteristics on Diesel Engine Soot and Nox Emissions” SAE Paper 940523 1994
- Rutland C.J. et al. “Progress Towards Diesel Combustion Modelling” SAE Paper 952429 1995
- Amsden A.A. KIVA-3V: “A Block structured KIVA program for Engines with Vertical or Canted Valves” Los Alamos 1997
- Han Z. Reitz R.D. “Turbulence Modelling of Internal Combustion Engines using RNG K-e Models” Comb. Sci. Tech. 106 267 1995
- Beatrice C. Belardini P. Bertoli C. Cameretti M.C. “Fuel Jet Models for Multidimensional Diesel Combustion Calculation: An Update” SAE Paper 950086 1995
- O'Rourke P.J. Amsden A.A “The Tab Method for Numerical Calculation of Spray Droplet Break-up” SAE 872089 1987
- Reitz R.D. “Modelling Atomisation Processes in High-Pressure Vaporising Sprays” Atomisation and Sprays Tech. 3 309 337 1987
- Nishida K. Hiroyasu H. “Simplified three Dimensional Modelling of Mixture Formation and Combustion in a D.I. Diesel Engine” SAE 890269 1989
- Hardenberg H.O. Hase F.W. “An Empirical Formula for Computing Pressure Rise Delay of a Fuel from its Cetane Number and from Relevant Parameters of D.I. Diesel Engines” SAE 790493 1979
- Bowman, C.T. “Kinetics of Pollutant Formation and Descruction in Combustion” Prog. Energy Combust. Sci. 1 33 45 1975
- Belardini P. Bertoli C. Beatrice C. D' Anna A. Del Giacomo N. “Application of a Reduced Kinetic Model for Soot Formation and Burnout in Three-Dimensional Diesel Combustion Computations” Twenty-Sixth International Symposium on Combustion 2517 2524 The Combustion Institute 1996
- Stoer J. Burlish R. “Introduction to Numerical Analysis” Springer-Verlag New York 1980
- Yoshihara, Y. Kazakov, A. Wang, A. Frenklach, M. “Reduced Mechanism of Soot Formation Application to Natural Gas Fuelled Diesel Combustion” 25-th Symposium (International) on Combustion The Combustion Institute 941 948 1994
- Pitsch, H. Wan, Y.P. Peters, N. “Numerical Investigation of Soot Formation and Oxidation Diesel Engine Condistions” SAE Paper 952357 1995
- Leung K.M. Lindsedt R.P. Jones W.P. “A Simplified reaction Mechanism for soot formation in Non- premixed Flames” Combustion and Flames 87 289 305 1991
- Fairweather M. Jones W.P. Ledin H.S. Lindstedt R.P. “Prediction and soot formation in turbulent Non-premixed Propane Flames” 24-th Symposium (International) on Combustion The Combustion Institute 1067 1074 1992
- Belardini P. Bertoli C. Del Giacomo N. Cameretti M.C. “A Simple Autoignition Model for 3D Diesel Combustion Computations” IMechE Transactions 1 305 315 London 1996
- Heaton, D.M. Martin, B. Bertoli, C. Giavazzi, F. “Fuel composition effects on Diesel Engine Emissions - a joint European study” Second Seminar on fuels for automotive and industrial Diesel engines IMECHE London 23 24 1993
- Cowley, C.T. Stradling, R.J. Doyon, I. “The influence of composition and properties of Diesel fuel on particulate Emissions from Heavy-Duty Engines” SAE Paper 932732 1993
- Beatrice C. Bertoli C. Del Giacomo N. “The Influence of Fuel Formulations on Pollutant of a Light Duty D.I. Diesel Engine” SAE Paper 961972 1996
- Bertoli C. Beatrice C. di Stasio S. Del Giacomo N. “In Cylinder Soot And NOx Concentration Measurements In D.I. Diesel Engine Fed By Fuels of Varying Quality” SAE Paper 960832 1996
- Chaves H. Knapp M. et al. “Experimental Study of Cavitation in the Nozzle Hole of Diesel Injectors Using Transparent Nozzles” SAE Paper 950290 1995
- Tennison P.J. Georjon T.L. Farrel P.V. Reitz R.D. “An experimental and Numerical Study of Sprays from a Common Rail Injection System for Use in an HSDI Diesel Engine” SAE Paper 980810 1998
- Arnoia V. Ficarella A. Laforgia D. et al. “A Theoretical Code to Simulate Behavior Of an Electro-Injector for Diesel Engines and Parametric Analysis” SAE Paper 970349 1997
- Bernard L. Occella S. Vafidis C. “Potential of the 4-cylinder Small DI Diesel Engine Concept” Powertrain Technologiess for a 3-litre-car International Symposium Certosa di Pontignano 1996