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Wärtsilä
20VW46F
The Wärtsilä 20VW46F is a V‑type, low‑speed, four‑stroke marine diesel engine delivering up to 13 800 kW at 600 rpm, designed for main propulsion on large commercial vessels.
13800.0 kW
Power
Engine Specifications
20
Cylinders
460 mm
Bore
580 mm
Stroke
4-stroke
Stroke Type
Components & Design
Component data being added…
Technical Data
Hubraum pro Zylinder
96,4 Liter
Leistung pro Zylinder (46F)
1200 kW @ 600 rpm
SFOC (Specific Fuel Oil Consumption)
170-173 g/kWh ISO
Ventile
2 inlet valves, 2 exhaust valves per cylinder
Kraftstoffeinspritzung
Direkte Einspritzung (Twin-Pump)
Aufladung
Turbolader mit Ladeluftkühlung
Betriebsstunden Feldhistorie
7,200,000+ hours since 2004
Gewicht 6L46
95 Tonnen
Gewicht 12V46F
177 Tonnen
Gewicht 16V46
214 Tonnen
power kw
13800
rpm
600
fuel type
HFO/MDO
configuration
V
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Common failures & inspection points
Failing exhaust valves due to corrosion on valve stem, caused by inferior fuel quality. A documented case: all four valves fractured
Turbocharger damage from debris from valve failures. Secondary damage from exhaust valve leakage that introduces cooling water into cylinder (identifiable
Cylinder liner wear and scoring: inspections required every 4–8 weeks, regular measurement of ring coating thickness and groove tightness. Early detec
Piston crown wear: measurement of piston crown and shaft height necessary to determine replacement. Inspection required if piston falls below scavenge port
Engine bearing monitoring: continuous temperature monitoring of lubricant and crankshaft bearings necessary. Three-section engine design enables p
Type-general inspection and maintenance points for this equipment category — not model-specific.
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Equipment Model #123181
· ✓ still in production