Motor Plants & Auxiliary Boilers USCG Question #274 (Set 6)

The formation of carbon monoxide in diesel exhaust gases is reduced by __________.

Official USCG Answer & Rule Citation

Correct Answer: Option C — maintaining proper combustion and scavenging

Carbon monoxide formation in diesel exhaust indicates incomplete combustion. Maintaining optimal combustion efficiency and effective cylinder scavenging ensures sufficient oxygen availability to convert carbon monoxide into carbon dioxide.

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