船用機器の障害に影響する低質燃料油の成分因子の統計的解析

抄録

For the purpose of making clear the influence of some ingredients of marine degraded fuel oil on machinery failures, samples of fuel oil taken from many ocean going ship's and used with main and auxiliary propulsion machinery and presumed to have been the cause of failure, were investigated by multivariate analysis.
It was found that the occurrence of failures of pre-treatment systems by degraded fuel oil is influenced by five factors : mesh size of strainer, high viscosity, high water content, asphaltenes, and aluminium. And it was also found that degraded fuel oil can be roughly discriminated by specific, gravity, viscosity, carbon residue, sulphur, wather, ash, asphaltenes, which may cause failure on the main engine or pre-treatment system.
Also, it was found that higher specific gravity and content of vanadium and aluminium affects the occrrence of such failure of main engine as sticking, abrasion, abnormal combustion, difficulty of combustion; the condition of high water and sodium content affect such failure of main engine as stains and obstacles after combustion.