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Influence of compression ratio on combustion, turbulence, swirls into model combustion chamber of SI engines

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EN
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EN
The results of the visualization researches, with the pressure measurement results are presented in the paper. Researches deal with the combustion system with semi-open combustion chamber for spark ignition engines. This system was elaborated in Aircraft Engine Department of Heat Engineering Institute of Warsaw University of Technology. During researches the influence of CR on a flame front propagation and turbulences into combustion chamber, when CR and ignition advance are varied, was determined. The model combustion chamber was made with the constant volumes ratio (the prechamber volume to the prechamber plus main combustion chamber volumes) of 28%. The CR were varied: 6:1, 8:1, 10:1 and 12:1, by changing of combustion chamber length and establish high. The researches were performed using rapid compression machine (RCM). The combustion sequences were recorded using high-speed digital camera with speed of 5000 frames per second. Simultaneously with combustion sequences recording, the high-speed pressure courses were registered. The research results show that the growth of compression ratio causes an improvement of combustion system performances; an increase of maximum cycle pressure and useful work field. The improvement of the performances is caused mainly by shortening of the combustion time and intensification of the turbulences and approaching of supposed combustion course.
Twórcy
  • Institute of Heat Engineering, Warsaw University of Technology ul. Nowowejska 21/25 Warszawa, Poland Tel.:+48 22 2345266
autor
  • Institute of Heat Engineering, Warsaw University of Technology ul. Nowowejska 21/25 Warszawa, Poland Tel.:+48 22 2345266
autor
  • Institute of Heat Engineering, Warsaw University of Technology ul. Nowowejska 21/25 Warszawa, Poland Tel.:+48 22 2345266
Bibliografia
  • [1] Glinka W., Leżański T., Wolański P., Research of the combustion process in a single compression machine using the quick smudge photograph, Journal of KONES, Powertrain and Transport, Vol. 14, No. 4 2007 (in Polish).
  • [2] Jankowski, A., Reduction Emission Level of Harmful Components Exhaust Gases by Means of Control of Parameters Influencing on Spraying Process of Biofuel Components for Aircraft Engines, Journal of KONES 2011, Vol. 18 No 3, pp. 129-135, Warsaw 2011.
  • [3] Jankowski, A., Modelling of Combustion Processes of Liquid Fuels, Journal of KONES 2012, Powertrain and Transport, Vol. 19 No. 4, pp. 239-244, Warsaw 2012.
  • [4] Jankowski, A., Chosen Problems of Combustion Processes of Advanced Combustion Engine, Journal of KONES, Vol. 20, No. 3 pp. 203-208, 2013.
  • [5] Żurek, J., Jankowski, A., Experimental and Numerical Modelling of Combustion Process of Liquid Fuels under Laminar Conditions, Journal of KONES, Vol. 21, No. 3, pp. 309-316, 2014.
  • [6] Jankowska-Siemińska, B., Jankowski, A., Slezak, M., Analysis end research of piston working condition of combustion engine in high thermal load conditions, Journal of KONES, Powertrain and Transport, Vol. 14, No. 3, pp. 233-243 2007.
  • [7] Jankowski, A., Czerwinski, J., Memorandum of Prof. A. K. Oppenheim and an ex ample of application of the Oppenheim Correlation (OPC) for the heat losses during the combustion in IC engines, Journal of KONES, Powertrain and Transport, Vol. 17, No. 2, pp. 181-194, 2010.
  • [8] Jankowski, A., Heat transfer in combustion chamber of piston engines, Journal of KONES, Powertrain and Transport, Vol. 17, No. 1, pp. 187-197, 2010.
  • [9] Jankowski, A., Laser research of fuel atomization and combustion process in the aspect of exhaust gases emission, Journal of KONES, Powertrain and Transport, Vol. 15, No. 1, pp. 119-126, 2008.
  • [10] Jankowski, A., Sandel, A., Sęczyk, J., Jankowska-Siemińska, B., Some problems of improvement of fuel efficiency and emissions in internal combustion engines, Journal of KONES, Internal Combustion Engines Vol. 9, No. 3-4, pp. 333-356, 2002.
  • [11] Jankowski, A., Sandel, A., Jankowska-Siemińska, B., Sęczyk, J., Measurement of drop size distribution in fuel spray by laser method, Journal of KONES, Internal Combustion Engines Vol. 8, No. 3-4, pp. 334-345, 2001.
  • [12] Jankowski, A., Some aspects of heterogeneous processes of the combustion including two phases, Journal of KONES, Internal Combustion Engines Vol. 12, No. 1-2, pp. 121-134, 2005
  • [13] Jankowski, A., Study of the influense of different factors on combustion processes (Part two) Journal of KONES, Powertrain and Transport, Vol. 16, No. 3, pp. 135-140, 2009
  • [14] Leżański T., Research system of the combustion engine with a half-open SI combustion chamber. PhD thesis, Warsaw University of Technology, The MEiL Faculty. Warsaw 2011 (in Polish).
  • [15] Leżański T., Wolański P., Research novel combustion system for spark ignition engines with semi-open combustion chamber, Journal of KONES, Powertrain and Transport, Vol. 14, No. 3, 2007.
  • [16] Leżański T., Sęczyk J., Wolański P., Influence of ignition advance angle on combustion in internal combustion spark ignition engines with semi open combustion chamber. Combustion Engines − Silniki Spalinowe. No. PTNSS-2009-SC-169, 2009.
  • [17] Leżański T., Sęczyk J., Wolański P., Research of the influence of structural parameters on system performance combustion engines with spark ignition, Journal of KONES, Powertrain and Transport, Vol. 16, No. 4 2009.
  • [18] Leżański T., Sęczyk J., Siwiec S., Wolański P., The use of high-speed photography to study the combustion process in spark-ignition engines with semi-open combustion chamber, Journal of KONES, Powertrain and Transport, Vol. 16, No. 4 2009.
  • [19] Leżański T., Sęczyk J., Wolański P., Research combustion system with semi-open combustion chamber in the engine production with spark ignition, Journal of KONES, Powertrain and Transport, Vol. 16, No. 3 2009.
  • [20] Leżański T., Sęczyk J., Wolański P., Some Problems of Combustion System Operation with Semi-Open Combustion Chamber for Spark Ignition Engines. Journal of KONES, Powertrain and Transport, Vol. 17, No. 4 2010.
  • [21] Leżański T., Sęczyk J., Wolański P., The effects of the novel system of combustion in manufacturing reciprocating engine with spark ignition, Combustion Engines – Silniki Spalinowe, No.3/2011 PTNSS-2011-SC-021.
  • [22] Leżański T., Sęczyk J., Wolański P., Research of Flame Propagation in Combustion System with Semi-Open Combustion Chamber for Gasoline SI Engines. Journal of KONES, Powertrain and Transport, Vol. 18, No. 3 2011. 186
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Bibliografia
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