Engine Safety (Supplementary) USCG Question #201 (Set 3)

A four cylinder, four stroke/cycle, single acting diesel engine has a 740 mm bore and a 1500 mm stroke. What indicated power will be developed if the average mean effective pressure is 18 kg/cm2 at a speed of 90 RPM?

Official USCG Answer & Rule Citation

Correct Answer: Option A — 3416 kW

Indicated power calculations for four-stroke engines require factoring in that a power stroke occurs every two crankshaft revolutions. Using a 740mm bore, 1500mm stroke, 18 kg/cm² MEP, and 90 RPM across four cylinders yields an indicated power output of 3416 kW.

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