Engineering · Diesel — Cooling
On a typical marine diesel, the jacket (cylinder) cooling water system removes heat primarily from the:
- ACrankshaft main bearings
- BCylinder liners, heads, and exhaust valves✓ Correct
- CFuel injection pump only
- DLube oil sump exclusively
Explanation
Jacket water circulates around the cylinder liners and heads and cools the exhaust valves, carrying combustion heat to the jacket-water cooler. Lube oil and piston cooling are usually separate circuits.
Authority: Diesel Engines (USCG engineering topic)
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