Method for assessing the technical condition of marine diesel engine driving the synchronous generator

• Main Authors: Tomasz KNIAZIEWICZ, Marcin ZACHAREWICZ
• Format: Article
• Language: English
• Published: Polskie Towarzystwo Naukowe Silników Spalinowych/Polish Scientific Society of Combustion Engines 2019-05-01
• Series: Combustion Engines
• Subjects: diagnosis; diesel-electric unit; model research; empirical studies
• Online Access: http://www.journalssystem.com/cen/,116376,0,2.html

The paper presents an innovative method for assessing technical condition of a marine diesel engine that drives synchronous generator. It is based on the measurement and analysis of generators phase-to-phase voltage. Additionally, it requires the measurement of a pseudoperiodic signal [3] with a period equal to duration of engines working cycle. The basis for developing method was the assumption that rotational speed fluctuations of an engines crankshaft (and also the generator) depend on a course of a working process carried out in it. The generators phase-to-phase voltage is directly dependent on a rotational speed fluctuation of its rotor. It must therefore be possible to assess a course of a working process of an engine based on a voltage waveform of a synchronous generator that cooperates ogether.