Class 2 (2nd Engineer) MEP 📅 Jan 2024

Exam Question

(a) As second engineer, describe the procedure involved in the complete inspection of a cylinder liner and piston assembly, indicating areas of significant interest. (5)

(b) Explain with reasons, possible faults which might be found. (4)

(d) How liner wear and wear rate is calculated? (3)

Reference Answer

(b) Faults in cylinder liner:
Cracks on the liner due to excessive tightening/ incorrect tightness of cylinder liner bolts
Cracks due to hoop stress because of poor liner support
Circumferential cracks along the wear ridge due to stress concentration or, more likely, because of new rings hitting the ridge

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