The most practical way of detecting an overload in one cylinder of an operating large, low-speed, main propulsion diesel engine is to __________.

Correct Answer: Option D — check the cylinder exhaust temperature frequently

Exhaust pyrometer readings provide the most direct, practical metric for monitoring individual cylinder energy output. An abnormally high exhaust temperature indicates excess fuel being burned relative to the trapped air charge, signaling a cylinder overload condition requiring immediate operational adjustment.