Abstract:
This research is motivated by operasional problems in the diesel generator on MV. Icon
Perdana, namely a rapid increase in cooling water temperature from 61 °C to 100 °C
within lessthan one minute and a significant drop in lubricating oil pressure from 3,61 bar
to 1,7 bar during engine operation. These problems can potentially cause blackouts and
reduce the reliability of the generator. Therefore, the purpose of this research is to analyze
the influence of cooling and lubrication system on the reliability of the diesel generator.
This study uses a quantitative method with a descriptive approach and multiple linear
regressions analysis. Data were collected through questionnaires distributed to 30
respondents, who were the engine crew of MV. Icon Perdana, direct observations during
the author’s one-year sea practice, and secondary data from maintenance reports. The
results show that both the cooling and lubrication systems simultaneously have a
significations and positive influence on generator engine reliability, with the lubrication
system having a more dominant influence than the cooling system (coefficient X2 = 0,434
and X1 = 0,130). The coefficient of determination (R2) is 0,56, indicating that 56% of the
variations ing engine influenced by other factors outside this research. Based on these
findings, it is recommended that the company improve the frequency of maintenance, use
lubricating oil that matches the engine’s specifications, and ensure the cooling system is
in optimal condition so that the reliability of the diesel generator can be maintained and
the risk of operational failures can be minimized.
