Main Engine 4-Stroke · Main Engines (4-Stroke)
The Wärtsilä 18V46F is a high‑power, medium‑speed (500 rpm) four‑stroke marine diesel engine delivering up to 21 600 kW, known for its robust common‑rail fuel injection and flexible fuel capability.
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| item | Every 1000-1500 hours for routine maintenance, with major overhauls typically required every 20,000-30,000 hours |
|---|
| cylinder_liner | 0.5 mm wear limit |
|---|---|
| piston_ring | 0.2 mm wear limit |
| exhaust_valve | 10% valve seat wear limit |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyors typically check for compliance with classification society rules and regulations, including verification of engine performance, emissions, and safety equipment
Estimated lifetime: 40,000-60,000 hours before major overhaul
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