Research on marine diesel´s fault prognostic and health management based on oil monitoring

Oil monitoring technology is an effective way to actualize condition based maintenance (CBM) for marine diesel, it can detect earlier failure symptoms, avoidance of fault taking place, it´s one of the indispensable diagnostic technology applied in marine diesel´s prognostic and health management (PHM). In this paper, according to oil spectral analysis data collected from continuous monitoring, a fault prognostic method based on statistical process control (SPC) for marine diesel was provided, which was taken main wearing elements´ concentration gradient as quality characteristic index, it indicated that their exist special causes leading marine diesel´s abrasion state out of statistical control, needing to find the root cause of the failure; and based on the oil spectral analysis data previously, projection pursuit (PP) approach was introduced to synthetic evaluation of marine diesel´s performance degradation degree, then established the judgment criterion, it given an guidance to marine diesel´s health management.