Main Engine 4-Stroke · Main Engines (4-Stroke)
The Wärtsilä 14W46DF is a 14‑cylinder, medium‑speed, dual‑fuel (LNG/HFO) main propulsion engine delivering about 16 030 kW at 500–600 rpm, noted for its high power density and proven long‑term reliability.
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| item | every 1000-2000 hours for routine maintenance, with major overhauls typically required every 20,000-30,000 hours |
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Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| cylinder_liner | 0.5-1.0 mm wear limit, depending on operating conditions and fuel quality |
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| piston_ring | 0.5-1.5 mm wear limit, depending on operating conditions and lubrication quality |
| fuel_injector | 10-20% reduction in flow rate or 10-20% increase in fuel pressure, depending on operating conditions and fuel quality |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyors typically check for compliance with regulatory requirements, including those related to emissions, safety, and environmental protection, as well as verifying the condition and maintenance of critical systems and components
Estimated lifetime: 40,000-60,000 hours, depending on operating conditions, maintenance quality, and fuel type
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