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Study of the HCCI Running Zone Using Ethyl Acetate
Technical Paper
2009-01-0297
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
HCCI mode has shown its potential to improve emissions and efficiency in internal combustion engines. In addition, it has open the possibility to use a wider range of fuels than in SI and CI engines. However, the engine running zone is still one of the main challenges that HCCI has to face. We have investigated this zone in the case of ethyl acetate using CFD simulations with a simplified combustion mechanism. This paper describes how ethyl acetate influences the running zone of HCCI engines compared to iso-octane.
Biochemical conversion of fermentable biomass can produce large quantities of esters by the reaction of ethanol with volatile organic acids. Among them, ethyl acetate has a low vaporization temperature and a high auto-ignition temperature. Preliminary experiments on SI engines have shown that it ignites more slowly than gasoline even if their physical properties are similar.
As fuel oxidation kinetics determine start of ignition, heat release rate and part of the emissions in HCCI engines, we used a detailed mechanism for ethyl acetate in a zero-dimensional analysis. Based on these results, we also developed a simplifed combustion mechanism for this molecule in order to simulate HCCI mode using a commercial CFD software (Fluent).
Different engine settings are investigated in an axisymmetric geometry. They are also studied with a simplified mechanism for iso-octane in order to compare the extents of the running zones. Using ethyl acetate, the knock limit is, as expected, expanded to higher loads.
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Contino, F. and Jeanmart, H., "Study of the HCCI Running Zone Using Ethyl Acetate," SAE Technical Paper 2009-01-0297, 2009, https://doi.org/10.4271/2009-01-0297.Also In
References
- Christensen, M. Hultqvist, A. Johansson, B. 1999 Demonstrating the multi fuel capability of a homogeneous charge compression ignition engine with variable compression ratio SAE Technical Paper, 1999-01-3679
- Tanaka, S. Ayala, F. Keck, J. C. Heywood, J. B. 2003 Two-stage ignition in HCCI combustion and HCCI control by fuels and additives Combustion and Flame 132 219 239
- Jeuland, N. Montagne, X. 2006 New HCCI/CAI combustion process development : Methodology for determination of relevant fuel parameters Oil &Gas Science and Technology - Rev. IFP 61 1 85 94
- Risberg, P. 2006 Describing the auto-ignition quality of fuels in HCCI engines Ph.D. thesis KTH
- Edwards, R. Griesemann, J.-C. Larivé, J.-F. Mahieu, V. 2004 Well-To-Wheels Analysis of Future Automotive Fuels and Powertrains in the European Context EUCAR, CONCAWE and JRC
- Kleerebezem, R. van Loosdrecht, M. C. M. 2007 Mixed culture biotechnology for bioenergy production Current opinion in biotechnology 18 3 207 212
- Zigová, J. Šturdik, E. 2000 Advances in biotechnological production of butyric acid Journal of lndustrial Microbiology & Biotechnology 24 3 153 160
- Zhao, F. Asmus, T. W. Assanis, D. N. Dec, J. E. Eng, J. A. Najt, P. M. 2003 Hommogeneous Charge Compression Ignition (HCCI) Engines Key research and development issues SAE
- Hessel, R. P. Foster, D. E. Aceves, S. M. Davisson, M. L. Espinosa-Loza, F. Flowers, D. L. Pitz, W. J. Dec, J. E. Sjöberg, M. Babajimopoulos, A. 2008 Modeling iso-octane HCCI using CFD with multi-zone detailed chemistry; Comparison to detailed speciation data over a range of lean equivalence ratios SAE Technical Paper, 2008-01-0047
- Zhao, H. 2007 HCCI and CAI engines for the automotive industry Woodhead Publishing
- Magnussen, B.F. 1989 Modeling of NOx and soot formation by the eddy dissipation concept International Flame Research Foundation
- Hong, S. Wooldridge, M. S. Assanis, D. N. 2002 Modeling of Chemical and Mixing Effects on Methane Autoignition under Direct-Injection, Stratified Charged Conditions Proceedings of the Combustion Institute 29 711 718
- ANSYS 2006 Fluent 6.3 User’s Guide
- Amsden, A. A. O’Rourke, P. J. Butler, T. D. 1989 KIVA-II: A Computer Program for Chemically Reactive Flows with Sprays Los Alamos National Laboratory
- de Risi, A. Donateo, T. Laforgia, D. 2001 Theoretical investigation on the influence of physical parameters on soot and NOx engine emissions ASME-ICE 36 2 53 64
- Jia, M. Xie, M. 2006 A chemical kinetics model of iso-octane oxidation for HCCI engines Fuel 85 2593 2604
- Gasnot, L. Decottignies, V. Pauwels, J. 2005 Kinetics modelling of ethyl acetate oxidation in fame conditions Fuel 84 505 518
- Miller, J. A. Melius, C. F. 1992 Kinetic and thermodynamic issues in the formation of aromatic compounds infames of aliphatic fuels Combustion and Flame 91 21 39
- Kee, R. J. Rupley, F. M. Miller, J. A. 1989 Chemkin-II: A fortran chemical kinetics package for the analysis of gas phase chemical kinetics Sandia National Laboratories
- Soyhan, H. Yasar, H. Walmsley, H. Head, B. Kalghatgi, G. Sorusbay, C. 2009 Evaluation of heat transfer correlations for HCCI engine modeling Applied Thermal Engineering 29 2–3 541 549
- Kalghatgi, G. T. Head, R. A. 2006 Combustion limits and efficiency in a homogeneous charge compression ignition engine International Journal of Engine Research 7 3 215 236