Title :
A wavelet-based combustion noise meter
Author :
Christen, Urs ; Vantine, Katie ; Chevalier, Alain ; Moraal, Paul ; Scholl, David
Author_Institution :
Ford Forschungszentrum Aachen
Abstract :
The combustion noise of diesel engines can be assessed by filtering in-cylinder pressure traces. In this paper, two wavelet-based methods are discussed. It is shown that the statistical properties of a noise meter based on shift-invariant wavelet transforms are improved compared to one that is based on traditional (shift-variant) wavelet transforms. The application of noise metering for pilot injection detection is also presented
Keywords :
acoustic noise measurement; combustion; diesel engines; wavelet transforms; diesel engine; in-cylinder pressure trace filtering; noise meter statistical property; noise metering; pilot injection detection; shift-invariant wavelet transform; wavelet-based combustion noise meter; wavelet-based method; Acoustic noise; Attenuation; Combustion; Diesel engines; Discrete wavelet transforms; Filtering; Fourier transforms; Frequency; Noise measurement; Wavelet transforms; Diesel engine; combustion noise; shift invariance; wavelet transform;
Conference_Titel :
Computer Aided Control System Design, 2006 IEEE International Conference on Control Applications, 2006 IEEE International Symposium on Intelligent Control, 2006 IEEE
Conference_Location :
Munich
Print_ISBN :
0-7803-9797-5
Electronic_ISBN :
0-7803-9797-5
DOI :
10.1109/CACSD-CCA-ISIC.2006.4776702
