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http://yadda.icm.edu.pl:80/baztech/element/bwmeta1.element.baztech-0c0475f3-9695-49a5-a04c-64182c01f156

Czasopismo

Journal of KONES

Tytuł artykułu

The Fourier transform as a new approach of evaluating the internal combustion engine indicator diagram

Autorzy Łoza, Ł.  Sitnik, L. J. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
Abstrakty
EN In this paper, the authors present an introduction to the new method of evaluating the indicator diagram of internal combustion engine. For several years, it was observed that analyses of combustion processes have been hardly changed since they were conducted for the first time. At the moment, the diagrams are plotted more and more precisely owing to the new sensors and digital processors. Despite all of these high technical advantages, which were obviously unavailable in the past, theoretical approach for describing indicator diagram has not changed in significant way. Nowadays, the indicator diagrams are still evaluated very generally and are presented in much too idealistic way as a smooth curve of pressure changes, without any disturbances, which are being detected very easily now. Furthermore, it appears that performance improvements of the IC engines are in need of developing new methods for analysis and evaluation. The Fourier transform is a new way to look at the combustion process in the engines. It is basically a mathematical instrument for analysing different types of signals, which are transformed, from time domain into frequency domain. It enables identifying specific sinusoidal components of arbitrary signals and separates relevant ones from the noise. This allows one to see significant differences in two or more apparently similar signals and detect the crucial parts. If we treat pressure changes in time like a common signal, we can compute Fourier transform and see basic components of the diagram.
Słowa kluczowe
EN indicator diagram   Fourier transform   internal combustion engine  
Wydawca Institute of Aviation
Czasopismo Journal of KONES
Rocznik 2017
Tom Vol. 24, No. 4
Strony 173--180
Opis fizyczny Bibliogr. 20 poz., rys.
Twórcy
autor Łoza, Ł.
  • Wroclaw University of Science and Technology Division of Automotive Engineering Braci Gierymskich Street 164, 51-640 Wroclaw, Poland tel.: +48 71 3477918, fax: +48 71 3477918, lukasz.loza@pwr.edu.pl
autor Sitnik, L. J.
  • Wroclaw University of Science and Technology Division of Automotive Engineering Braci Gierymskich Street 164, 51-640 Wroclaw, Poland tel.: +48 71 3477918, fax: +48 71 3477918, lech.sitnik@pwr.edu.pl
Bibliografia
[1] Corp, C. I., The interpretation of Indicator Diagrams, Transactions of the Kansas Academy of Science (1903-), Vol. 20, pp. 239-244, 1905.
[2] Chmielewski, P., Analiza statystyczna wykresu indykatorowego silnika o zapłonie samoczynnym, Politechnika Wrocławska, Wrocław 2016.
[3] https://www.dieselnet.com/standards/cycles/esc.php.
[4] Fudalej-Kostrzewa, E., Wykres indykatorowy silnika spalinowego, Wydział Samochodów i Maszyn Roboczych, Instytut pojazdów, Politechnika Warszawska.
[5] Ustrzycki, A., Ocena procesu spalania na podstawie wykresu indykatorowego, Laboratorium Silników spalinowych – Materiały pomocnicze, Katedra Silników Spalinowych i Transportu, Politechnika Rzeszowska.
[6] http://mathworld.wolfram.com/FourierTransform.html.
[7] http://mathworld.wolfram.com/DiscreteFourierTransform.html.
[8] http://mathworld.wolfram.com/FastFourierTransform.html.
[9] https://www.dataq.com/data-acquisition/general-education-tutorials/fft-fast-fourier-transform-waveform-analysis.html.
[10] Jankowski, A., Chosen Problems of Combustion Processes of Advanced Combustion Engine, Journal of KONES, Vol. 20, No. 3, DOI: 10.5604/12314005.1136852, pp. 203-208, Warsaw 2013.
[11] Jankowski, A., Czerwinski, J., Memorandum of Prof. A. K. Oppenheim and an Example of Application of the Oppenheim Correlation (OPC) for the Heat Losses during the Combustion in IC-Engine, Journal of KONES, Vol. 17 No. 2, Warsaw 2010.
[12] Jankowski, A., Czerwinski, J., Memorandum of Prof. A. K. Oppenheim and an Example of Application of the Oppenheim Correlation (OPC) for the Heat Losses during the Combustion in IC-Engine, Journal of KONES, Vol. 17 No. 2, Warsaw 2010.
[13] Jankowski, A., Heat transfer in combustion chamber of piston engines, Journal of KONES Vol. 17 No. 1, pp. 187-197, Warsaw 2010.
[14] Jankowski, A., Kowalski, M., Creating Mechanisms of Toxic Substances Emission of Combustion Engines, Journal of KONBiN No. 4(36), DOI 10.1515/jok-2015-0054 pp. 33-42, 2015.
[15] Jankowski, A., Laser Research of Fuel Atomization and Combustion Processes in the Aspect of Exhaust Gases Emission, Journal of KONES, Vol. 15, No. 1 pp. 119-126, Warszawa 2008.
[16] Jankowski, A., Test Stand for Modelling of Combustion Processes of Liquid Fuels, Journal of KONES, Vol. 21, No. 2, DOI: 10.5604/12314005.1133885, pp. 121-126, Warsaw 2014.
[17] Modelling of Combustion Processes of Liquid Fuels, Journal of KONES, Vol. 19, No. 4, DOI: 5604/12314005.1138352, pp. 239-244, Warsaw 2012.
[18] Skrętowicz, M., Jankowski, A., Haller, P., Woźniak, J., Janas, M., Risk Evaluation of Driver Exposure to Exhaust Fumes Inside the Passenger Car Cabin in Urban Traffic Conditions, Journal of KONES, Vol. 23, No. 3, DOI: 10.5604/12314005.1216394 pp. 457-464, Warsaw 2016.
[19] Zurek, 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, DOI: 10.5604/12314005.1134559, Warsaw 2014.
[20] Zurek, J., Kowalski, M., Jankowski, A., Modelling of Combustion Process of Liquid Fuels under Turbulent Conditions, Journal of KONES, Vol. 22, No. 4, DOI: 10.5604/12314005.1168562, pp. 355-344, 2015.
Uwagi
PL Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-0c0475f3-9695-49a5-a04c-64182c01f156
Identyfikatory
DOI 10.5604/01.3001.0010.3139