Identificação de defeitos em um motor de combustão interna ciclo otto a partir da análise de vibrações

Abstract

This undergraduate thesis proposes to analyze, through signal processing technique, the vibrations of an internal combustion engine of a Ford Fiesta 1.6, 2003. It was used, for this analysis, the Arduino UNO board and the accelerometer sensor module MPU6050. The data were analyzed with the aid of Matlab to obtain the x, y and z acceleration components as a function of time and their respective frequency spectra. In the engine, the vibration was collected in its normal operation and, then, some situations of supposed damage were observed in the spark plugs and in the alternator belt. In this frequency analysis, the rotation and explosion peaks of the engine, and the harmonic frequencies were identified. Therefore, the purpose of this undergraduate thesis is to associate, from the induced damages, a pattern of the curves in frequency for future monitoring of these damages.