Main Engine 4-Stroke · Main Engines (4-Stroke)
The Pielstick 20VPA6B is a medium‑speed, V‑type 20‑cylinder diesel engine delivering about 7 300 kW at 1 050 rpm, used as main propulsion on large commercial vessels.
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| oil_change | 1000-1500 hours |
|---|---|
| fuel_filter_change | 250-500 hours |
| air_filter_change | 500-1000 hours |
| cylinder_liner_inspection | 5000-10000 hours |
| piston_ring_replacement | 10000-20000 hours |
| cylinder_liner | 0.5-1.0 mm wear limit |
|---|---|
| piston_ring | 0.5-1.5 mm wear limit |
| crankshaft_bearing | 0.1-0.5 mm wear limit |
| exhaust_valve_seat | 0.5-1.5 mm wear limit |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyor typically checks engine condition, performance, and maintenance records, with particular attention to cylinder liner and piston ring wear, fuel injection system condition, and crankshaft bearing condition
Estimated lifetime: 30000-50000 hours
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