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Effect of n-heptane temperature on atomization parameters from a single-hole port fuel injector



Currently, there are stringent emission norms that regulate the level of pollutant emissions which all automotive engines must satisfy. In order to ensure that new internal combustion engines reach the level of emission established in these norms, researchers have studied the physical phenomena that happen in each part of the engine. One important phenomenon that has a great influence in both fuel consumption and pollutant emissions is the spray formed by the fuel injector. In this work, experiments were conducted in order to analyze the influence of test fluid temperature on atomization parameters of the spray formed by a single-hole port fuel injector (PFI). The n-heptane was used as test fluid at three temperatures (0, 30 and 60 C). The evaluations of droplet sizes, drop size distributions and drop velocities were performed by Phase Doppler Particle Analyzer (PDPA) technique. The measurements were taken 125 mm downstream from the injector tip along its axis with 300 kPa injection pressure. Results indicated that increasing the test fluid temperature induces a reduction in mean droplet diameters. This result was also observed in drop size distributions. Moreover, the increase in fuel temperature led to droplets with higher velocities.



DOI: 10.5151/engpro-simea2016-PAP31

Referências bibliográficas
  • [1] FAJGENBAUM, R. Influence of fuel temperature on atomization parameters of an atomizer used in automotive fuel injectors. 2013. 144f. Master’s thesis, Faculty of Mechanical Engineering, University of Campinas (Unicamp), Campinas. 2013.
  • [2] ANAND, T. N. C., MOHAN, A. M. and RAVIKRISHNA, R. V. Spray characterization of gasoline-ethanol blends from a multi-hole port fuel injector. Fuel, v. 102, pp. 613-623, 201
  • [3] FAJGENBAUM, R. and SANTOS, R. G. Influence of fuel temperature on atomization parameters in a pressure-swirl atomizer from a port fuel injector by Shadowgraphy technique. Journal of the Brazilian Society of Mechanical Sciences and Engineering, pp. 1-16, 2015.
  • [4] ALEIFERIS, P. G., SERRAS-PEREIRA, J., VAN ROMUNDE, Z., CAINE, J. and WIRTH, M. Mechanisms of spray formation and combustion from a multi-hole injector with E85 and gasoline. Combustion and Flame, v. 157, n. 4, pp. 735-756, 2010.
  • [5] PADALA, S., LE, M. K., KOOK, S. and HAWKES, E. R. Imaging diagnostics of ethanol port fuel injection sprays for automobile engine applications. Applied Thermal Engineering, v. 52, n. 1, pp. 24-37, 2013.
  • [6] HUNG, D. L. S., HARRINGTON, D. L., GANDHI, A. H., MARKLE, L. E., PARRISH, S. E., SHAKAL, J. S., SAYAR, H., CUMMINGS, S. D. and KRAMER, J. L. Gasoline fuel injector spray measurement and characterization - a new SAE J2715 recommended practice. SAE International Journal of Fuels and Lubricants, v. 1, n. 2008-01-1068, pp. 534-548, 2008.
  • [7] LEFEBVRE, A. H. Atomization and Spray. Hemisphere Publishing Corporation, 1989.
  • [8] MOHSEN-NIA, M., RASA, H. and NAGHIBI, S. F. Experimental and theoretical study of surface tension of n-pentane, n-heptane, and some of their mixtures at different temperatures. The Journal of Chemical Thermodynamics, v. 42, n. 1, pp. 110-113, 2010.
  • [9] MATOS, J. S.,TRENZADO, J. L., GONZÁLEZ, E. and ALCALDE R. Volumetric properties and viscosities of the methyl butanoate + n-heptane + n-octane ternary system and its binary constituents in the temperature range from 283.15 to 313.15 K. Fluid Phase Equilibria, v. 186, n. 1, pp. 207-234, 2001.
  • [10] KIM, H. J., PARK, S. H. and LEE, C. S. A study on the macroscopic spray behavior and atomization characteristics of biodiesel and dimethyl ether sprays under increased ambient pressure. Fuel Processing Technology, v. 91, n. 3, pp. 354-363, 20
  • [11] DÜWEL, I., GE, H. -W., KRONEMAYER, H., DIBBLE, R., GUTHEIL, E., SCHULZ, C. and WOLFRUM, J. Experimental and numerical characterization of a turbulent spray flame. Proceedings of the Combustion Institute, v. 31, n. 2, pp. 2247-2255, 2007.
  • [12] BIPM, IEC, IFCC, ILAC, ISO, IUPAC, IUPAP and OIML. Evaluation of measurement data – Guide to the expression of uncertainty in measurement. JCGM 100:2008, GUM 1995 with minor corrections.
  • [13] NIGRA JÚNIOR, E. L. P. Analysis of temperature influence and the injection pressure and the fuel type in the spray characteristics of PFI injectors. 2016. 143f. Master’s thesis, Faculty of Mechanical Engineering, University of Campinas (Unicamp), Campinas. 2016.
  • [14] BAYVEL, L. and ORZECHOWSKI, Z. Liquid atomization. Taylor & Francis, 1993.
Como citar:

NIGRA JÚNIOR, E.L.P. ; FUKUMASU, N.K.; BERTI, R.C.R.; ALEGRE, G.H.M.; KRIEGER FILHO, G.C.; SANTOS, R.G.; "Effect of n-heptane temperature on atomization parameters from a single-hole port fuel injector", p. 212-220 . In: Anais do XXIV Simpósio Internacional de Engenharia Automotica - SIMEA 2016 [=Blucher Engineering Proceedings].. São Paulo: Blucher, 2016.
ISSN 2357-7592, DOI 10.5151/engpro-simea2016-PAP31

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