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Parametric study on the fuel film breakup of a cold start PFI engine

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Abstract

In order to provide more insight on improving the cold start fuel atomization for reducing unburned hydrocarbon emissions, the liquid fuel film breakup phenomenon in the intake valve/port region was investigated in depth for port-fuel-injected engines. Experiments were conducted using high-speed high-resolution imaging techniques to visualize the liquid film atomization and airflow patterns in an axisymmetric steady flow apparatus. The impact of valve/port seat geometry, surface roughness, and fuel properties on airflow separation and fuel film breakup were determined through a parametric study. CFD simulations were also performed with FLUENT to help understand the airflow behavior inside the intake port and valve gap region and its potential impact on fuel film atomization.

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References

  • Annand W JD, Roe GE (1974) Gas flow in the internal combustion engine. Haessner, Newfoundland, NJ, pp 56–64

  • Arai T, Hashimoto H (1985) Disintegration of a thin liquid sheet in a cocurrent gas stream, ICLASS-85, Paper VIB/1

  • Bicen AF, Vafidis C, Whitelaw JH (1985) Steady and unsteady airflow through the intake valve of a reciprocating engine. J Fluid Eng 107:413–420

    Google Scholar 

  • Carvalho IS, Heitoyr MV, Santos D (2002) Liquid film disintegration regimes and proposed correlations. Int J Multiphase Flow 28:773–789

    Article  CAS  Google Scholar 

  • Curtis EW, Aquino CF, Trumpy DK, Davis GC (1996) A new port and cylinder wall wetting model to predict transient air/fuel excursions in a port fuel injected engine. SAE paper 961186

  • Dawson M, Hochgreb S (1998) Liquid fuel visualization using laser-induced fluoresence during cold start. SAE paper 982466

  • El Tahry SH, Khalighi B, Kuziak WR (1987) Unsteady-flow velocity measurements around an intake valve of a reciprocating engine. SAE paper 870593

  • Evers M R (1999) Investigating fuel film atomization from valve and port surfaces in a spark ignition engine. MS Thesis, Dept. of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri-Rolla

  • Felton PG, Kyritsis DC, Fulcher SK (1995) LIF visualization of liquid fuel in the intake manifold during cold start. SAE paper 952464

  • Fox JW, Min KD, Cheng WK, Heywood JB (1992) Mixture preparation in a SI engine with port fuel injection during starting and warm-up. SAE paper 922170

  • Gosman AD, Ahmed AMY (1987) Measurement and multidimensional prediction of flow in a axisymmetric port/valve assembly. SAE paper 870592

  • Kastner LJ, Williams TJ, White JB (1963) Poppet inlet valve characteristics and their influence on the induction process. In: Proceedings of the Institution of Mechanical Engineers, 178, 36:955–978

  • Khalighi B, El-Tahry WH, Kuziak WR (1986) Measured steady flow velocity distributions around a valve/seat annulus. SAE paper 860462

  • Koederitz KR (1999) Investigation of liquid fuel atomization from intake valve and port surfaces for a spark ignition engine. MS Thesis, Dept. of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri-Rolla

  • Koederitz KR, Evers MR, Wilkinson GB, Drallmeier JA (2002) Breakup of liquid fuel films from the surfaces of the intake port and valve in port-fuel-injected engines. Int J Engine Res 3(1):37–58

    Article  CAS  Google Scholar 

  • Lefebvre AH (1989) Atomization and sprays. Hemisphere, New York

  • Lefebvre AH (1992) Energy considerations in twin-fluid atomization. J Eng Gas Turbines Power 114:89–96

    CAS  Google Scholar 

  • Lehman AS (1970) Technical data book—petroleum refining. American Petroleum Institute

  • Mansour A, Chigier N (1990) Disintegration of liquid sheets. Phys Fluids A Fluid Dyn 2(5):706–719

    Article  CAS  Google Scholar 

  • Maroteaux F, Llory D, Coz J-F, Habchi C (2002) Liquid film atomization on wall edges ---- separation criterion and droplets formation model. J Fluids Eng 124:565–375

    Article  CAS  Google Scholar 

  • Meyer R, Heywood J B (1999) Effect of engine and fuel variables on liquid fuel transport into the cylinder in port-injected si engines. SAE paper 1999–01–0563

  • Nukiyama S, Tanasawa Y (1938) An experiment on the atomization of liquid by means of an air stream (5 reports). Trans Soc Mech Eng 4(14)

  • Pilch M, Erdman CA (1987) Use of breakup time data and velocity history data to predict the maximum size of stable fragments for acceleration-induced breakup of a liquid drop. Int J Multiphase Flow 13(6):741–757

    Article  CAS  Google Scholar 

  • Rizk HK, Lefebvre AH (1980) The influence of liquid film thickness on airblast atomization. Trans ASME 102:706–710

    Google Scholar 

  • Sattelmayer T, Wittig S (1986) Performance characteristics of prefilming atomizers in comparison with other airblast nozzles. Encyclopedia of Fluid Mechanics, 8:1091–1141

  • Shin Y, Cheng WK, Heywood JB (1994) Liquid gasoline behavior in the engine cylinder of a si engines. SAE paper 941872

  • Stanglmaier RH, Li J, Matthews RD (1999) The effect of in-cylinder wall wetting location on the HC emissions from SI engines. SAE paper 1999–01–0502

  • Weclas M, Melling A, Durst F (1998) Flow separation in the inlet valve gap of piston engines. Prog Energy Combust Sci 24:165–195

    Article  Google Scholar 

  • Wilkinson GB (2001) Investigation of liquid fuel atomization from the intake valve of a port fuel injected engine. MS Thesis, University of Missouri-Rolla

  • Witze PO, Green RM (1997) LIF and flame-emission imaging of liquid fuel films and pool fires in an SI engine during a simulated cold start. SAE paper 970866

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Authors and Affiliations

  1. Department of Mechanical and Aerospace Engineering and Engineering Mechanics, University of Missouri-Rolla, Rolla, MO 65409-0050, USA

    Y-P. Wang, G. B. Wilkinson & J. A. Drallmeier

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  1. Y-P. Wang
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  2. G. B. Wilkinson
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  3. J. A. Drallmeier
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Correspondence to Y-P. Wang.

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Wang, YP., Wilkinson, G.B. & Drallmeier, J.A. Parametric study on the fuel film breakup of a cold start PFI engine. Exp Fluids 37, 385–398 (2004). https://doi.org/10.1007/s00348-004-0827-x

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  • DOI: https://doi.org/10.1007/s00348-004-0827-x

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