RATIONALE FOR SELECTING SENSOR INSTALLATION LOCATIONS FOR VIBROACOUSTIC DIAGNOSTICS OF INTERNAL COMBUSTION ENGINES
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Abstract
The selection of installation locations and orientation of vibroacoustic sensors on the cylinder block of an internal combustion engine for determining the technical condition of the cylinder-piston group and the connecting-rod and main bearings of the crankshaft is substantiated on the basis of identifying diagnostically informative zones on the engine surface that ensure maximum sensitivity of the statistical characteristics of the vibration signal to changes in the structural parameters of the diagnosed joints. The proposed solution makes it possible to move from an empirical choice of measurement points to a formalized procedure for constructing a measurement scheme suitable for the subsequent establishment of quantitative relationships between the degree of wear of mating parts and the parameters of the vibroacoustic signal.
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References
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