Experiments on knocking combustion of a Deutz MWM 8 cylinder large gas engine was carried out based on wavelet transform method. The combustion knocking phenomena is identified by coherence wavelet maps. A measure of the degree of dependence of two adjacent vibration signals defined by the wavelet spectra. A new knock parameter q is defined which is the scaling parameter of the partition function of the normalized wavelet cross power spectrum between adjacent vibration signals.
['Jozsef Z. Szabo', 'Peter Bakucz']
Knocking combustion characteristic of large gas engine based on the coherence wavelet analysis of vibration signals