Wavelet analysis of in-cylinder LDV velocity measurements
Wiktorsson, Magnus; Söderberg, Fredrik; Johansson, Bengt; Lindoff, Bengt (1996). Wavelet analysis of in-cylinder LDV velocity measurements [Host publication title missing], 1212,, 1 - 10. SAE International Fall Fuels and Lubricants Meeting and Exposition. San Antonio, Texas, United States: SAE
Conference Proceeding/Paper
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Published
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English
Authors:
Wiktorsson, Magnus
;
Söderberg, Fredrik
;
Johansson, Bengt
;
Lindoff, Bengt
Department:
Mathematical Statistics
Combustion Engines
Abstract:
The Discrete Wavelet Transform (DWT) is a new way to analyze gas flow measurements in engine cylinders. The DWT technique differs significantly from the Fast Fourier Transform (FFT) in that with the former, the analysis of information can be done in both the time domain and frequency domain. The basic theory of wavelets is presented and the use of DWT is demonstrated on information derived from laser Doppler velocity (LDV) measurements for different geometrical configurations of combustion chambers in a natural gas converted truck engine.
Keywords:
Natural gas converted engine ;
Discrete wavelet transforms (DWT) ;
Gas engines ;
Laser Doppler velocimeters ;
Velocity measurement ;
Fast Fourier transforms ;
Flow measurement ;
Wavelet transforms ;
Engine cylinders ;
Combustion chambers ;
Turbulence ;
Time domain analysis ;
Frequency domain analysis ;
Automotive fuel
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