VIBRATION ANALYSIS OF AN INTERNAL COMBUSTION ENGINE Academic Article uri icon

abstract

  • This work presents the application of a vibration signature analysis method for early fault detection and diagnosis in internal combustion engines. The successful implementation of this method in various maintenance programs motivates the application of this method to the class of SI engines. The goals in applying this method are to provide alerts for abnormal operation, to enable detection of the source of the abnormality, and to provide the means to estimate the severity of the problem. Experiments were performed with a four-stroke, fourcylinder in-line, carbureted SI engine. The vibrations were measured with a uniaxial acceleration transducer mounted on the engine-block. To obtain the vibration signature the signal from the transducer was transformed to the frequency domain by application of a Fast Fourier Transform (FFT) procedure. Our measurements demonstrate that various …

publication date

  • May 19, 1998