Engine Safety (Supplementary) USCG Question #252 (Set 4)

Which type of diesel engine fuel nozzle is shown in the illustration? Illustration MO-0059

USCG Exam Illustration MO-0059
USCG Examination Diagram: Illustration MO-0059
Official USCG Answer & Rule Citation

Correct Answer: Option A — Multi-hole

Multi-hole fuel nozzles feature several small discharge orifices around the tip apex, optimizing atomization and fuel-air mixing within large-bore, direct-injection marine diesel combustion chambers for efficient power output.

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