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Wärtsilä
6L46DF
The Wärtsilä 6L46DF is a medium‑speed, six‑cylinder dual‑fuel engine delivering up to 6 870 kW at 600 rpm, capable of running on marine diesel oil or low‑pressure LNG with lean‑burn combustion for IMO Tier III emissions.
6870.0 kW
Power
Engine Specifications
6
Cylinders
460 mm
Bore
580 mm
Stroke
6,870 kW
MCR Power
600.0 rpm
MCR RPM
4-stroke
Stroke Type
Family: Wartsila Wartsila 46DF
· Tier: IMO Tier III (gas mode)
· Fuel: MDO, LNG
Other Cylinder Configurations 3
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
unified from engine model
True
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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 #38967
· ✓ still in production