Engineering · Diesel — Maintenance
Purifiers (centrifuges) are used in the fuel and lube systems to:
- ARaise fuel pressure to injection level
- BSeparate water and solids from the oil by centrifugal force✓ Correct
- CHeat fuel for combustion
- DMeter fuel to each cylinder
Explanation
A centrifugal purifier spins the oil so denser water and sludge migrate outward and are removed, delivering clean oil to the engine. Proper gravity-disc selection sets the water interface.
Authority: Diesel Engines (USCG engineering topic)
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