In recent years failures of marine diesel engine shows a tendency to increase. Especially abnormal wear of piston ring and cylinder liner is serious problem.
Therefore role of fuel oil treatment system for marine diesel engine is becoming important every year.
Ability of fuel oil treatment system is affected by fuel oil properties, construction of system, ability of individuality, condition, and operation method.
So we investigated actual ability of fuel oil treatment systems by analyzing fuel oil that collected from each tereatment devices.
The result of investigation is be shown as follows.
The main item of properties that bring engine failures are water, sulfur, Carbon Residue, FCC catalyst, Asphaltene, Dry Sludge, Vanadium, Sodium, etc.
Then Water, FCC catalyst, and Dry Sludgein are removed by Fuel oil Treatment System.
Average ratio that purifier removed FCC catalyst was 43.2%. Average flow ratio was 50.1%. And this was affected flow ratio of fuel oil.
Fuel oil treatment devices do not always give enough ability. And ability of treatment is given influence by method of operation.
