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Modeling HCCI Combustion With High Levels of Residual Gas Fraction - A Comparison of Two VVA Strategies
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 27, 2003 by SAE International in United States
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Adjusting the Residual Gas Fraction (RGF) by means of Variable Valve Actuation (VVA) is a strong candidate for controlling the ignition timing in Homogeneous Charge Compression Ignition (HCCI) engines. However, at high levels of residual gas fraction, insufficient mixing can lead to the presence of considerable temperature and composition variations. This paper extends previous modeling efforts to include the effect of RGF distribution on the onset of ignition and the rate of combustion using a multi-dimensional fluid mechanics code (KIVA-3V) sequentially with a multi-zone code with detailed chemical kinetics. KIVA-3V is used to simulate the gas exchange processes, while the multi-zone code computes the combustion event. It is shown that under certain conditions the effect of composition stratification is significant and cannot be captured by a single-zone model or a multi-zone model using only temperature zones. In light of these findings, KIVA-3V is also used to compare two VVA strategies (negative valve overlap and secondary exhaust valve opening) in terms of the mixing quality of the internal EGR with the fresh charge. The results indicate that for different valve strategies and same amount of internal EGR, the degree of temperature and composition stratification in the cylinder can be quite different.
CitationBabajimopoulos, A., Lavoie, G., and Assanis, D., "Modeling HCCI Combustion With High Levels of Residual Gas Fraction - A Comparison of Two VVA Strategies," SAE Technical Paper 2003-01-3220, 2003, https://doi.org/10.4271/2003-01-3220.
Homogeneous Charge Compression Ignition Engines 2003
Number: SP-1805 ; Published: 2003-10-31
Number: SP-1805 ; Published: 2003-10-31
- Najt, P. M., and Foster, D. E., “Compression-Ignited Homogeneous Charge Combustion,” SAE Technical Paper, No. 830246, 1983.
- Thring, R. H., “Homogeneous Charge Compression Ignition (HCCI) Engines,” SAE Technical Paper, No. 892069, 1989.
- Christensen, M., Johansson, B., Amneus, P., and Mauss, F., “Supercharged Homogeneous Charge Compression Ignition,” SAE Technical Paper, No. 980787, 1998.
- Morimoto, S. S., Kawabata, Y., Sakurai, T., and Amano, T., “Operating Characteristics of a Natural Gas-Fired Homogeneous Charge Compression Ignition Engine (Performance Improvement Using EGR),” SAE Technical Paper, No. 2001-01-1034, 2001.
- Christensen, M., Hultqvist, A., and Johansson, B., “Demonstrating the Multi Fuel Capability of a Homogeneous Charge Compression Ignition Engine with Variable Compression Ratio,” SAE Technical Paper, No. 1999-01-3679, 1999.
- Kaahaaina, N. B., Simon, A. J., Caton, P. A., and Edwards, C. F., “Use of Dynamic Valving to Achieve Residual-Affected Combustion,” SAE Technical Paper, No. 2001-01-0549, 2001.
- Koopmans, L., and Denbratt, I., “A Four Stroke Camless Engine, Operated in Homogeneous Charge Compression Ignition Mode with Commercial Gasoline,” SAE Technical Paper, No. 2001-01-3610, 2001.
- Allen, J., and Law, D., “Variable Valve Actuated Control Auto-Ignition: Speed Load Maps and Strategic Regimes of Operation,” SAE Technical Paper, No. 2002-01-0422, 2002.
- Wolters, P., Salber, P., Geiger, J., Duesmann, M., and Dilthey, J., “Controlled Auto Ignition Combustion Process with an Electromechanical Valve Train,” SAE Technical Paper, No. 2003-01-0032, 2003.
- Fiveland, S. B., and Assanis, D. N., “A Four-Stroke Homogeneous Charge Compression Ignition Engine Simulation for Combustion and Performance Studies,” SAE Technical Paper, No. 2000-01-0332, 2000.
- Fiveland, S. B., Agama, R., Christensen, M., Johansson, B., Hiltner, J., Mauss, F., and Assanis, D. N., “Experimental and Simulated Results Detailing the Sensitivity of Natural Gas HCCI Engines to Fuel Composition,” SAE Technical Paper, No. 2001-01-3609, 2001.
- Dec, J. E., and Sjoberg, M., “A Parametric Study of HCCI Combustion - the Sources of Emissions at Low Loads and the Effects of GDI Fuel Injection,” SAE Technical Paper, No. 2003-01-0752, 2003.
- Flowers, D., Aceves, S. M., Westbrook, C. K., Smith, J. R., and Dibble, R., “Detailed Chemical Kinetic Simulation of Natural Gas HCCI Combustion: Gas Composition Effects and Investigation of Control Strategies,” Journal of Engineering for Gas Turbines and Power, Vol. 123 No. 2, pp. 433-439 (2001).
- Aceves, S. M., Flowers, D. L., Martines-Frias, J., Smith, J. R., Westbrook, C. K., Pitz, W. J., Dibble, R., Wright, J., Akinyemi, W. C., and Hessel, R. P., “A sequential Fluid-Mechanic Chemical-Kinetic Model of Propane HCCI Combustion,” SAE Technical Paper, No. 2001-01-1027, 2001.
- Ogink, R., and Golovitchev, V., “Gasoline HCCI Modeling: An Engine Cycle Simulation Code with a Multi-Zone Combustion Model,” SAE Technical Paper, No. 2002-01-1745, 2001.
- Yelvington, P. E., and Green, W. H., “Prediction of the Knock Limit and Viable Operating Range for a Homogeneous-Charge Compression-Ignition (HCCI) Engine,” SAE Technical Paper, No. 2003-01-1092, 2003.
- Babajimopoulos, A., Assanis, D. N., and Fiveland, S. B., “An Approach for Modeling the Effects of Gas Exchange Processes on HCCI Combustion and its Application in Evaluating Variable Valve Timing Control Strategies,” SAE Technical Paper, No. 2002-01-2829, 2002.
- Amano, T., Morimoto, S., and Kawabata, Y., “Modeling of the Effect of Air/Fuel Ratio and Temperature Distribution on HCCI Engines,” SAE Technical Paper, No. 2001-01-1024, 2002.
- Noda, T., and Foster, D. E., “A Numerical Study to Control Combustion Duration of Hydrogen-fueled HCCI by Using Multi-zone Chemical Kinetics Simulation,” SAE Technical Paper, No. 2001-01-0250, 2001.
- Amsden, A. A., “KIVA-3V: A Block-Structured KIVA Program for Engines with Vertical or Canted Valves,” Los Alamos National Laboratory Report LA-13313-MS, 1997.
- Kee, R. J., Rupley, F. M., and Miller, J. A., “CHEMKIN-II: A Fortran Chemical Kinetics Package for the Analysis of Gas-Phase Chemical Kinetics,” Sandia Report SAND89-8009, 1989.
- Warnatz, J., “A Reaction Mechanism for the Description of Low and High Temperature Oxidation of Hydrocarbon-Air Mixtures at Lean and Rich Conditions,” 1999.