Contour of vibroacoustic map in diagnoses of engine's failure

• Autorzy: Kaźmierczak A. , Janicka A. , Tkaczyk M. , Wróbel R.
• Języki publikacji: EN

Abstrakty

EN

Almost all engine failures have an influence on engine's vibration, which is described in the article .Of course not every time diagnostic system can report of that. This is a reason why detection of vibrations must be accomplished with high quality diagnostic systems. Therefore, Doppler laser Vibrometry based on scanner Polytec had been used. To achieve full diagnostic results multidimensional vibration's function has been invented, where the torque moment is used as an extra parameter. Measured vibrations were subjected to digital signal processing like windowing, fast Fourier transform, filtration byfinite impulse response windowed filters. The results of measure and processing per-form inform of contour 3 D plots, which indulge in speed estimate of the usefulness of presented method. Tested engine performance, vibration measurement parameters, adopted diagnostic circuit, Digital processing of vibration signal, Vibration versus torque and magnitude spectrum (contour vibroacoustic map) of engine in good working order; co = 2000 rpm, contour vibroacoustic map of engine in good working order; co = 4000 rpm, contour vibroacoustic map of engine with fail of injection system; co = 2000 rpm, contour vibroacoustic map of engine with fail of injection system; co = 4000 rpm, contour vibroacoustic map of engine withfail of turbo charger; co = 2000 rpm are presented in the paper.

Słowa kluczowe

EN

vibroacustic maps; digital processing; automotive diagnosis; vibroacustic analysis

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2009
• Tom: Vol. 16, No. 2
• Strony: 217--224
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Kaźmierczak A.

autor

Janicka A.

autor

Tkaczyk M.

autor

Wróbel R.

• Wrocław University of Technology Institute of machine Design and Operation I. Łukaszewicza Street 7/9, 50-371 Wrocław,

Bibliografia

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• [3] Brol, S., Mamla, J., Malcewicz, K., Borecki, D., Application of spectral and wavelet analysis in engine diagnostics, Combustion Engines, Polish Scientific Society of Combustion Engines, 2009.
• [4] http://www.avl.com.
• [5] The Thrill of Solution: Dynamometers and Drivers, AVL, update 12.4.2001.
• [6] Lyons, R. G., Wprowadzenie do cyfrowego przetwarzania sygnałów, Wydawnictwo WKŁ, Warsaw, 2006.
• [7] Stranneby, D., Cyfrowe przetwarzanie sygnałów. Metody, algorytmy, zastosowanie, Wydawnictwo BTC, Warsaw, 2004.
• [8] Szabatin, J., Podstawy teorii sygnałów, Wydawnictwo WKŁ, Warsaw, 2003.