Motor Plants & Auxiliary Boilers USCG Question #954 (Set 20)

If a slow-speed two-stroke cycle diesel engine is fitted with scavenging air ports and exhaust ports located on opposite sides of the cylinder wall, what scavenging flow-pattern is utilized?

Official USCG Answer & Rule Citation

Correct Answer: Option A — Cross-flow scavenging

Cross-flow scavenging places intake and exhaust ports on opposing sides of the cylinder liner wall, forcing intake air across the combustion space in a U-turn path.

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