The article presents the results justify raising the technical readiness of combine harvesters, reducing fuel consumption and power loss power unit due to timely diagnosis and Troubleshooting. The objective of the study was the study of vibroacoustic processes in the injectors of a diesel power unit combine harvesters during the injection of fuel with a view to their use for the diagnosis of the injectors and studies related to the development of process maps and tools for diagnostics of agricultural machinery of domestic and foreign production. In the first stage of experimental investigations the injector with the acceleration sensor was mounted on a stand to adjust the fuel equipment. Using spectral analysis of the vibration of the nozzle specified frequency range, which are most actively manifests the energy of the vibrations. When processing the input signal we analyze the influence of nozzle defects on the amplitude and phase parameters of the signal and the spectrum of vibrations of the power unit combine harvesters
vibration, spectrum, diagnosis, adequacy, optimization, mode, combine
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