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Numerical Modeling of Charge Stratification for the Combustion Control of HCCI Engines
Technical Paper
2005-01-3722
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Numerical modeling is used to estimate the realizable potential of combustion control and burn duration extension in homogeneous charge compression ignition (HCCI) engines using in-cylinder charge stratification. Parametric analyses of several fuels using a range of operating conditions illustrate the potential physical variables have on ignition timing and burn duration. The detailed stratification model utilizes a one-dimensional CFD gas dynamics representation of radial gas motion in an engine cylinder with time-varying chamber volume and detailed combustion chemistry of n-pentane fuel. This approach provides the ability to incorporate the effects of in-cylinder temperature and species concentration non-uniformities while remaining sufficiently tractable to include a detailed kinetic model of combustion chemistry.
A parametric set of conditions was studied to determine the effect of stratified temperature, equivalence ratio, and EGR on the ignition timing and burn duration of a representative HCCI engine. The assumption of adiabatic engine operation was made to assess the potential of combustion control mechanisms separate from heat transfer effects. The results demonstrate that moderate and potentially achievable amounts of in-cylinder charge stratification result in extended heat release durations relative to homogeneous conditions. The use of combined temperature, equivalence ratio, and EGR variation in a conceptionally achievable configuration is shown to provide the largest benefit. A series of path forward research directions are also discussed.
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Grenda, J., "Numerical Modeling of Charge Stratification for the Combustion Control of HCCI Engines," SAE Technical Paper 2005-01-3722, 2005, https://doi.org/10.4271/2005-01-3722.Also In
References
- Olsson, J-O Erlandsson, O. Johannson, B. “Experiments and Simulation of a Six-Cylinder Homogeneous Charge Compression Ignition (HCCI) Engine” SAE Paper 2000-01-2867 2000
- Yang, J. Culp, T. Kenney, T. “Development of a Gasoline Engine System Using HCCI Technology - The Concept and the Test Results” SAE Paper 2002-01-2832 2002
- Amano, T. Morimoto, S. Kawabata, Y. “Modeling of the Effect of Air/Fuel Ratio and Temperature Distribution on HCCI Engines” SAE Paper 2001-01-1024 2001
- Gale, N. Stewart, D. Stanglmaier R. T. Ryan III “HCCI Combustion Control in a Multi-Cylinder Engine through Dual Fuel Operation” JSAE Paper 2001-5341 2001
- Olsson, J-O Tunestål, P. Johannson, B. Fivelan, S. Agama, J.R. Assanis, D.N. “Compression Ratio Influence on Maximum Load of a Natural Gas-Fueled HCCI Engine” SAE Paper 2002-01-0111 2002
- Kong, S-C. Marriot, C. Reitz, R.D. Christensen, M. “Modeling and Experiments of HCCI Engine Combustion Using Detailed Chemical Kinetics With Multidimensional CFD” SAE Paper 2001-01-1026 2001
- Dec, J.E. Sjöberg M. “A Parametric Study of HCCI Combustion - the Sources of Emissions at Low Loads and the Effects of GDI Fuel Injection” SAE Paper 2003-01-0752 2003
- Sjöberg M. Dec, J.E. “Combined Effects of Fuel-type and Engine Speed on Intake Temperature Requirements and Completeness of Bulk-gas Reactions for HCCI Combustion” SAE Paper 2003-01-3173 2003
- Haraldsson, G. Tunestål, P. Johannson, B. Hyvönen, J. “HCCI Combustion Phasing in a Multi-Cylinder Engine Using Variable Compression Ratio” SAE Paper 2002-01-2858 2002
- Au M. Girard J. Dibble R. Flowers D. Aceves S. Martinez-Frias J. Smith R. Seibel C. Maas U. “1.9- Liter Four-Cylinder HCCI Engine Operation with Exhaust Gas Recirculation,” SAE Paper 2001-01-1894 2001
- Olsson, J-O Tunestål, P. Ulfvik, J. Johannson, B. “The Effect of Cooled EGR on Emissions and Performance of a Turbocharged HCCI Engine” SAE Paper 2003-01-0743 2003
- Babajimopoulos, A. Lavoie, G.A. Assanis, D.N. “Modeling HCCI Combustion with High Levels of Residual Gas Fraction - A Comparison of Two VVA Strategies” SAE Paper 2003-01-3220 2003
- Kaahaaina, N. Simon, A.J. Caton, P.A. Edwards, C.F. “Use of Dynamic Valving to Achieve Residual- Affected Combustion” SAE Paper 2001-01-0549 2001
- Urushirhara, T. Hiraya, K. Kakuhou, A. Itoh, T. “Expansion of HCCI Operation Region by the Combination of Direct Fuel Injection, Negative Valve Overlap and Internal Fuel Reformation” SAE Paper 2003-01-0749 2003
- Strandh P. Bengtsson J. Johansson R. Per Tunestål P. Johansson B. “Variable Valve Actuation for Timing Control of a Homogenous Charge Compression Ignition Engine” SAE Paper 2004-01-0147 2004
- Agrell, F. Angstrom, H-E Eriksson, B. Wikander, J. Linderyd, J. “Integrated Simulation and Engine Test of Closed Loop HCCI Control by Aid of Variable Valve Timings” SAE Paper 2003-01-0748 2003
- Aceves S. Flowers D. Westbrook C. Smith R. Dibble R. Christensen M. Pitz W. Johansson B. “A Multi-Zone Model for Prediction of HCCI Combustion and Emissions” SAE Paper 2000-01-0327 2000
- Richter, M. Engström, J. Franke, A. Aldén, M. Hultqvist, A. Johansson, B. “The Influence of Charge Inhomogeneity on the HCCI Combustion Process” SAE Paper 2000-01-2868 2000
- Noda, T. Foster, D. “A Numerical Study to Control Combustion Duration of Hydrogen-Fueled HCCI Using Multi-Zone Chemical Kinetics Simulations” SAE Paper 2001-01-0250 2001
- Aceves, S. Flowers, D.L. Espinosa-Loza, F. Babajimopoulos, A. Assanis, D.N. “Analysis of Premixed Charge Compression Ignition Combustion With a Sequential Fluid Mechanics-Multizone Chemical Kinetics Model” SAE Paper 2005-01-0115 2005
- Bradley, D. Morley, C. Gu, X.J. Emerson, D. SAE Paper 2002-01-2868 2002
- Sankaran, R. Im, H. “Effects of Mixture Inhomogeneity on the Auto-Ignition of Reactants Under HCCI Environment” AIAA-2004-1328 2004
- Xu, H. Liu, M. Gharahbaghi, S. Richardson, S. Wyszynski, M. Megaritis, T. “Modelling of HCCI Engines: Comparison of Single-zone, Multi-zone, and Test Data” SAE Paper 2005-01-2123 2005
- Dec, J.E. Sjöberg, M. “Isolating the Effects of Fuel Chemistry on Combustion Phasing in an HCCI Engine and the Potential of Fuel Stratification for Ignition Control” SAE Paper 2004-01-0557 2004
- Sjöberg, M. Dec, J.E. Cernansky, N.P. 2005-01-0113 2005
- Sjöberg, M. Dec, J.E. “Effects of Engine Speed, Fueling Rate, and Combustion Phasing on the Thermal Stratification Required to Limit HCCI Knocking Intensity” SAE Paper 2005-01-2125 2005
- Curran HJ Gaffuri P Pitz WJ Westbrook CK “A Comprehensive Modeling Study of Iso-octane Oxidation” Combustion and Flame 129 3 253 280 2002
- Androulakis, I. P. “Kinetic Mechanism Reduction Based on an Integer Programming Approach” AlChE J. 46 361 2000
- Androulakis, I.P Grenda, J.M. Bozzelli, J.W. “Time Integrated Pointers for the Reduction of Chemical Reaction Mechanisms” AIChE J. 56 361 2004
- Lund C.M. Lawrence Livermore National Laboratory 1978
- Pires da Cruz, A. Dean, A.M. Grenda, J.M. “A Numerical Study of the Laminar Flame Speed of Stratified Methane/Air Flames” Twenty-eighth Symposium (International) on Combustion The Combustion Institute Pittsburgh 2000 1925 1932
- Poinsot, T.J. Lele, S.K. “Boundary Conditions for Direct Simulations of Compressible Viscous Flows” J. Comp. Phys. 101 104 129 1992
- Grenda, J.M. Androulakis, I.P. Green, W.H. Dean A.M. “Computational Mechanism Generation Applied to the Autocatalytic Pyrolysis of Methane” IEC&R 56 361 2003