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Gradient-Based Optimization of a Multi-Orifice Asynchronous Injection System in a Diesel Engine Using an Adaptive Cost Function
Technical Paper
2006-01-1551
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A gradient-based optimization tool has been developed and, in conjunction with a CFD code, utilized in the search of optimal fuel injection strategies. The approach taken uses a steepest descent method with an adaptive cost function, where the line search is performed with a fast-converging backtracking algorithm. The adaptive cost function is based on the penalty method, where the penalty coefficient is increased after every line search. The parameter space is normalized and, thus, the optimization occurs over the unit cube in higher-dimensional space.
The application of this optimization tool is demonstrated for a non-road version of the Sulzer S20 DI diesel engine which, for these simulations, is equipped with a multi-orifice, asynchronous injection system. This system permits an independent timing of the fuel pulses, and each orifice has its own diameter and injection direction. Optimizations have been performed for a two fuel pulse strategy, where the optimization parameters include the start of the injections, the injection durations, the size of the nozzle orifices and the injection directions. It has been demonstrated that this new injection method has a large potential for reducing emissions while maintaining a low fuel consumption. In addition, in comparison with other non-gradient-based techniques, the optimization approach used in this study is computationally very efficient.
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Citation
Tanner, F. and Srinivasan, S., "Gradient-Based Optimization of a Multi-Orifice Asynchronous Injection System in a Diesel Engine Using an Adaptive Cost Function," SAE Technical Paper 2006-01-1551, 2006, https://doi.org/10.4271/2006-01-1551.Also In
References
- Haupt, R. L. Haupt, S. E. Practical Genetic Algorithms John Wiley and Sons Inc. New York 1998
- Senecal, P. Reitz, R. “Optimization of Diesel Engine Emissions and Fuel Efficiency Using Genetic Algorithms and Computational Fluid Dynamics,” Tenth International Multidimensional Engine Modeling Meeting Detroit, MI March 2000
- Senecal, P. Reitz, R. “Simultaneous Reduction of Engine Emissions and Fuel Consumption Using Genetic Algorithms and Multi-Dimensional Spray and Combustion Modeling,” SAE Paper 2000-01-1890 2000
- Senecal, P. Montgomery, D. Reitz, R. “Diesel Engine Optimization Using Multi-Dimensional Modeling and Genetic Algorithms Applied to a Medium Speed, High Load Operating Condition,” Proc. Fall Technical Conference of the ASME ICE Division, 99-ICE-244 2000
- Wickman, D. Senecal, P. Reitz, R. “Diesel Engine Combustion Chamber Geometry Optimization Using Genetic Algorithms and Multi-Dimensional Spray and Combustion Modeling,” SAE Paper 2001-01-0547 2001
- Bergin, M. J. Hessel, R. P. Reitz, R. D. “Optimization of a Large Diesel Engine via Spin Spray Combustion,” SAE Paper 2005-01-0916 2005
- Kim, M. Liechty, M. P. Reitz, R. D. “Application of Micro-Genetic Algorithms for the Optimization of Injection Strategies in a Heavy-Duty Diesel Engine,” SAE Paper 2005-01-0219 2005
- Liu, Y. Reitz, R. D. “Optimizing HSDI Diesel Combustion and Emissions Using Multiple Injection Strategies,” SAE Paper 2005-01-0212 2005
- de Risi, A. Donateo, T. Laforgia, D. “Optimization of the Combustion Chamber of Direct Injection Diesel Engines,” SAE Paper 2003-01-1064 2003
- Hiroyasu, T. Miki, M. Kim, M. Hiroyasu, H. Miao, H. “Reduction of Heavy Duty Diesel Engine Emission and Fuel Economy with Multi-Objective Genetic Algorithm and Phenomenological Model,” SAE Paper 2004-01-0531 2004
- Clarke, F. H. Optimization and Nonsmooth Analysis John Wiley and Son Inc. New York 1983
- Tanner, F. Srinivasan, S. “Optimization of Fuel Injection Configurations for the Reduction of Emissions and Fuel Consumption in a Diesel Engine Using a Conjugate Gradient Method,” SAE Paper 2005-01-1244 2005
- Srinivasan, S. Tanner, F. “A Conjugate Gradient Algorithm Applied to the Optimization of Split Injections for the Reduction of Emissions and Fuel Consumption in a Diesel Engine.” Fifteenth International Multidimensional Engine Modeling Meeting Detroit, MI April 2005
- Amsden, A. A. “KIVA-3: A KIVA Program with Block Structured Mesh for Complex Geometries,” Tech. Rep. LA-12503-MS Los Alamos National Laboratory March 1993
- Abraham, J. Bracco, F. V. Reitz, R. D. “Comparisons of Computed and Measured Premixed Charge Engine Combustion,” Combustion and Flame 60 309 322 1985
- Kong, S.-C. Reitz, R. D. “Multidimensional Modeling of Diesel Ignition and Combustion Using a Multistep Kinetics Model,” Journal of Engineering for Gas Turbines and Power 115 781 789 1993
- Heath, M. T. Scientific Computing: An Introductory Survey McGraw-Hill, Inc. New York 2nd 2002
- Dennis, J. Schnabel, R. B. Numerical Methods for Unconstrained Optimization and Nonlinear Equations Prentice Hall Englewood Cliffs, N.J. 1983
- United States Environmental Protection Agency “Control of Emissions of Air Pollution From Nonroad Diesel Engines,” Federal Register 63 205 56967 57023 October 23 1998
- Han, Z. Y. Reitz, R. D. “Turbulence Modeling of Internal Combustion Engines Using RNG k - ε Models,” Combust. Sci. and Tech. 106 267 295 1995
- Tanner, F. X. “A Cascade Atomization and Drop Breakup Model for the Simulation of High-Pressure Liquid Jets,” SAE Paper 2003-01-1044 2003
- Tanner, F. X. “Development and Validation of a Cascade Atomization and Drop Breakup Model for High-Velocity Dense Sprays,” Atomization and Sprays 14 3 211 242 2004
- Tanner, F. X. “Validation of an Auto-Ignition Model Based on a Transport Equation of a Characteristic Ignition Progress Variable,” Proc. 15th ILASS-Americas Annual Conference Madison, Wisconsin 98 102 May 2002
- Tanner, F. X. Reitz, R. D. “The Spray-Induced Flow and Its Effect on the Turbulent Characteristic Combustion Time in DI Diesel Engines,” Atomization and Sprays 12 1-3 187 208 2002
- Flowers, W. L. Manson, R. K. Kruger, C. H. “Kinetics of the Reaction of Nitric Oxide with Hydrogen,” Fifteenth Symposium (International) on Combustion/The Combustion Institute 823 832 1975
- Bradley, J. N. Craggs, P. “Reaction of Hydrogen with Nitric Oxide at High Temperature,” Fifteenth Symposium (International) on Combustion/The Combustion Institute 833 842 1975
- Duxbury, J. Pratt, N. H. “A Shock Tube Study of NO Kinetics in the Presence of H 2 and Fuel-N,” Fifteenth Symposium (International) on Combustion/The Combustion Institute 843 855 1975
- Monat, J. P. Hanson, R. K. Kruger, C. H. “Shock Tube Treatment of the Rate Coefficient for the Reaction N 2 + O → NO + N ,” Seventeenth Symposium (International) on Combustion/The Combustion Institute 543 552 1979
- Heywood, J. B. Internal Combustion Engine Fundamentals McGraw-Hill New York 1988
- Hiroyasu, H. Kadota, T. “Models for Combustion and Formation of Nitric Oxide and Soot in Direct Injection Diesel Engines,” SAE Paper 760129 1976
- Nagle, J. Strickland-Constable, R. “Oxidation of Carbon between 1000-2000 C,” Proc. Fifth Carbon Conference 1 Pergammon Press 154 1962
- Chan, M. Das, S. Reitz, R. D. “Modeling Multiple Injection and EGR Effects on Diesel Engine Emissions,” SAE Paper 972864 1997
- Stebler, H. Luft- und brennstoffseitige Massnahmen zur internen NOx-Reduktion von schnellaufenden direkteingespritzten Diesel Motoren Swiss Federal Institute of Technology (ETH) 1998
- Nehmer, D. Reitz, R. D. “Measurement of the Effect of the Injection Rate and Split Injections on Diesel Engine soot and NOx Emissions,” SAE Paper 940668 1994
- Patterson, M. Kong, S.-C. Hampson, G. Reitz, R. D. “Modeling the Effects of Fuel Injection Characteristics on Diesel Engine Soot and NOx Emissions,” SAE Paper 940523 1994
- Tow, T. Pierpont, D. Reitz, R. D. “Reducing Particulate and NO x Emissions by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine,” SAE Paper 940897 1994
- Han, Z. Uludogan, A. Hampson, G. J. Reitz, R. D. “Mechanism of Soot and NOx Emission Reduction Using Multiple-Injection in a Diesel Engine,” SAE Paper 960633 1996
- Chehroudi, B. Sinko, K. Minkowycz, W. Shih, S. “Interacting-Sprays Injection: A New Concept for NO x and Smoke Reductioin in Diesel Engines,” Atomization and Sprays 8 673 690 1998