Inflammability evaluation of hydrocarbon fuels mixtures formed directly in the combustion chamber
More details
Hide details
Faculty of Machines and Transport at Poznan University of Technology
Publication date: 2017-08-01
Combustion Engines 2017,170(3), 57–65
The proposed article involves an investigation of the processes taking place during the preparation of mixed fuels that are combined directly before combustion. The fuel dose formed in this way must take into account the qualitative and quantitative composition of the fuels and the amount of air in the process. Given that liquid fuels similar to gasoline (e.g. methanol, ethanol, butanol) are characterized by different properties, their comparison would be useful in order to use their ratio to influence the combustion process. The process of fuel preparation plays a decisive role in this issue. The article describes abilities of modelling the injection of various fuels simultaneously to the combustion chamber for creating fuel mixture directly before ignition. First part of the article consists of analysis of light hydrocarbon fuels mixing abilities, supported with present research data. Next part describes the evaluation of execution of the assumed system – two fuel injectors with analysis of spray penetration. The modelling of the injection and spray was performed in the AVL FIRE 2014.2 environment and the results were presented. The injection possibility was proven by injecting the fuel to the combustion chamber model. Local values of air-fuel ratio, density and ambient pressure were presented to better understand the potential in mixing fuels directly before ignition. The conclusion includes description of fuel mixing abilities, influence of various fuels on creation of a stratified mixture and definition of controllability of charge ignition.
ALEIFERIS, P.G., VAN ROMUNDE, Z.R. An analysis of spray development with iso-octane, n-pentane, gasoline, ethanol and n-butanol from a multi-hole injector under hot fuel conditions. Fuel. 2013, 105, 143-168.
ARGACHOY, C., PIMENTA, A.P. Phenomenological model of particulate matter emission from direct injection diesel engines. Journal of the Brazilian Society of Mechanical Sciences and Engineering. 2005, 27(3).
ASAY, R., SVENSSON, K., TREE, D. An empirical, mixing-limited, zero-dimensional model for diesel combustion. SAE Technical Paper. 2004, 2004-01-0924.
ASHGRIZ, N. Handbook of atomization and sprays. Springer, New York 2011.
AVL Fire 2014.2, AVL AST Documentation.
CAMEO Chemicals. (accessed 19.03.2017).
CHEN, Z., GU, F., HU, W. Chemical engineering thermodynamics. Chemical Industry Press, Beijing, 2006.
CHEN, H., REUSS, D.L., SICK, V. Analysis of misfires in a direct injection engine using proper orthogonal decomposition. Experiments in Fluids. 2011, 51.
DECHOZ, J., ROZÉ, C. Surface tension measurement of fuels and alkanes at high pressure under different atmospheres. Applied Surface Science. 2004, 1-4(229), 175-182.
DEMIREL, Y. Energy, green energy and technology. Springer-Verlag London, 2012.
ELFASAKHANY, A. Investigations on performance and pollutant emissions of spark-ignition engines fueled with nbutanol–,isobutanol–, ethanol–, methanol–, and acetone–gasoline blends: A comparative study. Renewable and Sustainable Energy Reviews. 2017, 17, 404-413.
FOURNIER, S., SIMON, G., SEERSET, P. Evaluation of low concentrations of ethanol, butanol, BE, and ABE blended with gasoline in a direct-injection, spark-ignition engine. Fuel. 2016, 181, 396-407.
GARG, P., KUMAR, P., SRINIVASAN, K., DUTTA, P. Evaluation of isopentane, R-245fa and their mixtures as working fluids for organic Rankine cycles. Applied Thermal Engineering. 2013, 1-2(51), 292-300.
HUANG, Y., HONG, G. Investigation of the effect of heated ethanol fuel on combustion and emissions of an ethanol direct injection plus gasoline port injection (EDI + GPI) engine. Energy Conversion and Management. 2016, 123, 338-347.
HUANG, Y., HUANG, S., HUANG, R., HONG, G. Spray and evaporation characteristics of ethanol and gasoline direct injection in non-evaporating, transition and flashboiling conditions. Energy Conversion and Management. 2016, 108, 68-77.
JONES, J.J. Hydrocarbons. Physical properties and their relevance to utilization. C Jones &Ventus Publishing., 2010.
LIU, S, CUTY CLEMENTE, E.R., HU, T., WEI, Y. Study of spark ignition engine fueled with methanol/gasoline fuel blends. Applied Thermal Engineering. 2007, 27(11-12), 1904-1910.
LUCCHINI, T., D’ERRICO, G., ONORATI, A., BONANDRINI, G. et al. Development and application of a computational fluid dynamics methodology to predict fuel–air mixing and sources of soot formation in gasoline direct injection engines. International Journal of Engine Research. 2014, 5(15), 581-596.
MOOSAVI, M., DANESHVAR, A., SEDGHAMIZ, E. et al. Shear rate-, temperature- and composition-dependencies of viscosity behavior of mixtures of {[bmim]NO3+ethanol}. Journal of Molecular Liquids. 2017, 199, 257-266.
PIELECHA, I. Modeling of gasoline fuel spray penetration in SIDI engines. International Journal of Automotive Technology. 2014, 15(1), 47-55.
Refining online. (accessed 19.03.2017).
SCHIFTER, I., GONZÁLEZ, U., GONZÁLEZ-MACÍAS, C. Effects of ethanol, ethyl-tert-butyl ether and dimethylcarbonate blends with gasoline on SI engine. Fuel. 2016, 183, 253-261.
Shell Chemicals, Isopentane Q1111, www.shellcom (accessed 19.03.2017).
SHEN, C., LI, X.-M., LU, Y.Z., LI, C.X. Effect of ionic liquid 1-methylimidazolium chloride on the vapour liquid equilibrium of water, methanol, ethanol, and {water + ethanol} mixture. Journal of Chemical Thermodynamics. 2011, 43(11), 1748-1753.
STORCH, M., KOEGL, M., ALTENHOFF, M. et al. Investigation of soot formation of spark-ignited ethanol-blended gasoline sprays with single- and multi-component base fuels. Applied Energy. 2016, 181, 278-287.
Thermal-Fluids Central, (accessed 20.03.2017).
TURNS, S.R. An introduction to combustion: concepts and applications. McGraw-Hill, New York 1996.
WEI, J. Molecular symmetry, rotational entropy, and elevated melting points. Industrial & Engineering Chemistry Research. 1999, 38(12), 5019-5027.
ZHUANG, Y., HONG, G. Primary investigation to leveraging effect of using ethanol fuel on reducing gasoline fuel consumption. Fuel. 20132, 105, 425-431.