Engineering · Diesel — Wear
Liner clover-leafing (uneven bore wear in a lobed pattern) on a slow-speed diesel is associated with:
- AExcessive scavenge air
- BCorrosive wear concentrated where lube-oil quills inject✓ Correct
- CToo-high jacket-water temperature
- DLoose cylinder-head bolts
Explanation
Clover-leafing is corrosive wear between the cylinder-oil injection points, where the alkaline oil is less able to neutralize acids; it appears as lobes around the liner bore.
Authority: Diesel Engines (USCG engineering topic)
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