Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
DETECTION OF FAULTS IN CILINDERS OF THE INTERNAL COMBUSTION ENGINE USING THE CHOI-WILLIAMS DISTRIBUTION OF ACOUSTIC SIGNALS
Submission Author:
Tobias Anderson Guimarães , MG
Co-Authors:
Lucas Araújo Marra, Tobias Anderson Guimarães, Ricardo Humberto de Oliveira Filho
Presenter: Tobias Anderson Guimarães
doi://10.26678/ABCM.COBEM2019.COB2019-1593
Abstract
Faults in Internal Combustion Engines (IC engines) could be detected using signal processing techniques applied to the acoustic data measured experimentally. The detection and the diagnosis techniques of the faults in IC engines are important tools to be used in the Quality Control of the IC engines assembly line and in the condition monitoring. In this context, the objective of this work is to purpose a methodology of the detection and diagnosis of faults in cylinders of the IC engines using the time-frequency analysis of acoustic signals measured with the engines in operation. Usually, the signals measured in the IC engines have transient components that are difficult to identify by using the conventional spectral analysis. Hence, the acoustic signals will be processed to the time-frequency domain using the Choi-Williams Distribution in order to detect the transient components produced by the faults in the pistons of the IC engine. The results proved that the time-frequency analysis provided by the Choi-Williams Distribution has applied to acoustic signal may be used as a powerful technique to be used in the detection and diagnosis of faults in IC engines.
Keywords
acoustic signals, detection of faults, INTERNAL COMBUSTION ENGINES, time-frequency distributions
