Method of evaluation of the technical condition of the diesel-electric unit
Akademia Marynarki Wojennej
Marcin Zacharewicz   

Akademia Marynarki Wojennej
Data nadesłania: 13-02-2019
Data ostatniej rewizji: 27-05-2019
Data akceptacji: 27-05-2019
Data publikacji online: 28-05-2019
Data publikacji: 28-05-2019
Diagnostyka 2019;20(2):113–119
The article presents an innovative method of evaluating technical condition of marine diesel engines driving electric power generator. The presented method is based on measurements of the phase-to-phase voltage of the synchronous generator and on measurements of the acceleration of the injector needle. The basis for the method is an assumption that the shapes of the waveforms of the phase-to-phase voltage of the generator include information on fluctuations of the angular velocity of the engine crankshaft. Consequently, these fluctuations depend directly on the course of the working process occurring in the engine cylinders. The vibrating signal is used to synchronize the shapes of the voltage waveforms with the engine working process.
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