Motor Plants & Auxiliary Boilers USCG Question #702 (Set 16)

The lower end of the piston rod, shown in the illustration, is fitted into the __________. Illustration MO-0003

USCG Exam Illustration MO-0003
USCG Examination Diagram: Illustration MO-0003
Official USCG Answer & Rule Citation

Correct Answer: Option B — crosshead

Large crosshead-type two-stroke diesel engines decouple the connecting rod from the piston via a vertical piston rod. The lower end of this piston rod rigidly connects to the crosshead assembly, transferring linear reciprocating loads to the crosshead pin and bearings.

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