Engine Safety (Supplementary) USCG Q#289 (Set 4)

Which area of the indicator diagram illustrated, indicates the ignition delay period in a diesel engine cylinder? Illustration MO-0033

USCG Exam Illustration MO-0033 — USCG Examination Diagram: **Illustration MO-0033**

Official USCG Answer & Rule Citation

Correct Answer: Option C — J

Phase 'J' on a diesel cylinder indicator card represents the ignition delay period, spanning from the moment fuel is injected until the onset of actual rapid combustion and pressure rise.

All Engine Safety (Supplementary) Sets Practice Set 4