This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Computer Simulation of a Flex-Fuel Engine Running on Different Gasoline-Hydrous Ethanol Blends
Technical Paper
2012-36-0487
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Nowadays computer simulation is an important tool to support new internal combustion engine projects, but still further studies are necessary for its use in fuel development. In order to study the influence of fuel properties on engine combustion and emission performance, a computer model was designed based on a Flex-Fuel engine geometric data. Model was validated with experimental tests done on an engine dynamometer. A simulation software was used to simulate the experimental conditions, by using Wiebe two zone combustion and Woschni heat transfer models. In-cylinder maximum pressure, IMEP and emission data were calculated for different gasoline-hydrous ethanol blends at 3875 rpm, 60 Nm and 105 Nm. Total hydrocarbons concentration was simulated comparing the experimental data of hydrocarbons added with unburned ethanol emission measured with a FTIR analyzer. The computer model presented good agreement with experimental data for maximum in-cylinder pressure, intake air, fuel_consumption and IMEP. Regarding emissions, the simulations could not match experimental data without specific adjustment for each fuel, showing the need for further modeling development.
Recommended Content
Authors
- Tadeu Cavalcante Cordeiro de Melo - PETROBRAS/CENPES/PDAB/DPM
- Guilherme Bastos Machado - PETROBRAS/CENPES/PDAB/DPM
- Carlos Rodrigues Pereira Belchior - COPPE/UFRJ
- Marcelo Jose Colaco - COPPE/UFRJ
- Jose Eduardo Mautone Barros - UFMG
- Daniel de Oliveira Gatto - CEFET-RJ
- Carlos Eduardo Fernandes Paiva - UFRJ
Topic
Citation
de Melo, T., Machado, G., Belchior, C., Colaco, M. et al., "Computer Simulation of a Flex-Fuel Engine Running on Different Gasoline-Hydrous Ethanol Blends," SAE Technical Paper 2012-36-0487, 2012, https://doi.org/10.4271/2012-36-0487.Also In
References
- MELO, T. C. C. MACHADO, G. B. OLIVEIRA, E. J. et al. 2011 “Different Hydrous Ethanol-Gasoline Blends - FTIR Emissions of a Flex-Fuel Engine and Chemical Properties of the Fuels” SAE Technical Paper 2011-36-0080
- MELO, T. C. C. MACHADO, G. B. MACHADO, R. T. JR. et al. 2007 “In Cylinder Pressure Curve Simulation On Multifuel Engines - a Comparison Between a Polytrophic and General Thermodynamic Model for Gasoline, Ethanol and Natural Gas” 8th International Conference on Engines for Automobile SAE 2007-24-0035 Italia
- HEYWOOD, J. B. 1988 Internal Combustion Engine Fundamentals 1 McGraw-Hill New York, USA
- CARVALHO, L. O. 2011 Modelagem computacional integrada e análise energética de sistemas de cogeração com motores de combustão interna D. Sc. Thesis COPPE/UFRJ Rio de Janeiro, RJ, Brazil
- WOSCHNI, G. 1967 “A universally applicable equation for the instantaneous heat transfer coefficient in the internal combustion engine” SAE Technical Papers, 670931
- WIMMER, A. PIVEC, R. SAMS, T. H. 2000 “Heat transfer to the combustion chamber and portwalls of IC engines - Measurement and Prediction” SAE World Congress, 2000-01-0568 Detroit, MI, USA
- SCHUBERT, C. WIMMER, A. CHMELA, F. 2005 “Advanced heat transfer model for CI engines” SAE 2005 World Congress & Exhibition, 2005-01-0695 Detroit, MI, USA April
- YELIANA, Y. COONEY, C. WORM, J. et al. 2011 “Estimation of double-Wiebe function parameters using least square method for burn durations of ethanol-gasoline blends in spark ignition engine over variable compression ratios and EGR levels” Applied Thermal Engineering 31 2213 2220
- HEYWOOD, J. B. HIGGINS, J. M. TABACZYNSKI, R. J. 1979 “Development and use of a cycle simulation to predict SI engine efficiency and NOx emissions” SAE Technical Papers, n. 790291 1 26
- LINDSTRÖM, F. ANGSTRÖM, H. KALGHATGI, E. et al. 2005 “An empirical SI combustion model using laminar burning velocity correlations” SAE 2005 Fuels & Lubricants Meeting & Exhibition, 2005-01-2106 Rio de Janeiro, Brazil May
- BAÊTA, J. G. C. 2006 Metodologia experimental para maximização do desempenho de um motor multicombustível turboalimentado sem prejuízo à eficiência global D. Sc. Thesis UFMG Belo Horizonte, MG, Brasil
- HEYWOOD, J. B. 1980 “Engine combustion modeling - an overview” Combustion Modeling in Reciprocating Engines Plenum Publishing Corporation 33 35 USA
- CATON, J. A. 2000a “Comparisons of instructional and complete versions of thermodynamic engine cycle simulations for spark-ignition engines” International Journal of Mechanical Engineering Education 29 4 284 306
- MELO, T.C.C. Machado, G. B. Belchior, C.R.P. et al. 2012a “Hydrous Ethanol-Gasoline Blends: Combustion and Emission Investigations on a Flex-Fuel Engine” Fuel http://dx.doi.org/10.1016/j.fuel.2012.03.018
- PATTAS, K. HAFNER, G. 1973 “Stickoxidbildung bei der ottomotorischen Verbrennung” MTZ 12 397 404
- ONORATI, A. FERRARI, G. D'ERRICO, G. “1D Unsteady Flows with Chemical Reactions in the Exhaust Duct-System of SI Engines: Predictions and Experiments” SAE Technical Paper n. 2001-01-0939
- RAGGI, M. V. K. 2005 Modelagem da cinética química de formação de NOx e CO em motores com ignição por centelha M. Sc. Dissertation PUC-Minas Belo Horizonte, MG, Brazil
- LAVOIE, G. A. BLUMBERG, P. N. 1980 “A fundamental model for predicting fuel consumption, NO x and HC emissions of the conventional spark-ignited engine” Combustion Science and Technology 21 225 258