USCG USCG Motor
Set 3 • Question #174 of 382
Launch Interactive Practice Room The piston rod scraper box incorporated in a two-stroke/cycle, crosshead diesel engine serves to_____.
A
eliminate the necessity for an oil scraper ring
B
prevent side thrust and cylinder scoring
C
prevent sludge and dirty oil from entering the crankcase
✓ Correct Answer
D
scrape oil and carbon deposits off the cylinder walls
USCG NMC Regulatory Explanation
In USCG Motor Plants (Diesel Engineering), regarding 'The piston rod scraper box incorporated in a two-stroke/cycle, crosshead diesel engine serves to', the correct operational principle is: 'prevent sludge and dirty oil from entering the crankcase'.
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