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Wärtsilä

8LW38DF

Wärtsilä 38 — Viertakt-Marinediesel, Bohrung 380 x Hub 475 mm, 600 rpm, 5800 kW (8L38) to 11600 kW (16V38) at 600 rpm. Brennstoff: Diesel (Heavy Fuel Oil, Marine Diesel, Dual-Fuel variants). Status: Legacy - No longer in current Wärtsilä product line; in-service units receive upgrade and support packages through Wärtsilä services. Verifiziert, Datenblatt verlinkt.

3840.0 kW
Power

Engine Specifications

8
Cylinders
380 mm
Bore
475 mm
Stroke
4-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

Mean Effective Pressure (MEP) 2.7 MPa
Mean Piston Speed 9.5 m/s
Power per Cylinder 660–725 kW
Piston Displacement per Cylinder 53.9 liters
Valves per Cylinder 2 inlet + 2 exhaust
Engine Speed Class Medium-speed (600 rpm)
Weight Range 90–200 tons (6L38 to 16V38)
Cylinder Bore Class 400 mm class
power kw 3840
rpm 600
fuel type LNG/HFO (Dual-Fuel)
configuration L

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Common failures & inspection points

Cold Corrosion of Cylinder Liners - Sulfuric acid formation from fuel sulfur content when liner temperatures fall below acid dew point; piston ring sticking in
Cylinder Liner Wear & Piston Ring Degradation - Chrome coating peeling from low residual alkalinity (BN) in cylinder oil; groove sticking allows combustion gas
Turbocharger Overhaul Cycle - Major service required every ~50,000 operating hours; rotating parts replacement mandatory; compressor wheel subject to foreign ob
Exhaust Valve Seat Recession - Gradual erosion of valve seat from combustion temperatures and abrasive exhaust gas erosion; valve sinks progressively deeper; de
Shaft Seal & Main Bearing Wear - Stern tube bearing clearance degradation from extended service; shaft seals subject to silt/sand ingestion in coastal/river ser

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #123762 · ✓ still in production