OceanSphereENGINES

6LW20DF

Main Engine 4-Stroke · Main Engines (4-Stroke)

Class-certified type (DNV register) · technical data sheet not yet verified​‌⁠‍​⁠‌​‌‌⁠⁠​⁠‌⁠‌​⁠​
648 kWPower
6Cylinders
200 mmBore
280 mmStroke

The equipment category for this product is marine engines. The Wärtsilä 6LW20DF is a dual-fuel engine designed to operate on LNG or heavy fuel oil (HFO), making it suitable for various maritime applications. This engine has a bore of 200 mm and a stroke of 280 mm, delivering a power output of 648 kW at 1200 rpm. It is part of the W20DF family, known for its robust design and efficient operation. Common maintenance areas include inspecting balancing shaft bearing wear, ensuring proper turbocharger cooling, and checking fuel injection system components to prevent cavitation erosion. Regular checks and upgrades are recommended to maintain optimal performance and reduce downtime.

Specifications

Technical data.reference — unverified

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Bohrung × Hub200 × 280 mm
Hubraum pro Zylinder8,8 l
Leistung pro Zylinder (aktuell)185-220 kW (abhängig von Variante/Drehzahl)
Verdichtungsverhältnis15:1
Spezifischer Brennstoffverbrauch (SFOC)186-187 g/kWh (ISO-Bedingungen)
Motorkonfigurationen4L20, 5L20, 6L20, 8L20, 9L20 (nur Reihe)
Gewichte (Reihe-Motor)4L20: 6,8 t | 6L20: 8,3 t | 8L20: 10,5 t | 9L20: 11,1 t
Gewichte (Stromerzeuger)4L20: 14,0 t | 6L20: 16,8 t | 8L20: 20,7 t | 9L20: 23,8 t
Kolben-Mittenfluß-Geschwindigkeit8,4 m/s (900 rpm), 9,3 m/s (1000 rpm)
Ventile pro Zylinder2 Einlass + 2 Auslass
Configuration4-Takt, nicht-umkehrbar, turbogela­den & Ladeluftkühlung, Direkteinspritzung
Ausführungen verfügbarDiesel (W20) & Dual-Fuel (W20DF, seit 2011)
Liefermenge seit 1990er>7500 Motoren insgesamt; >6000 W20DF-Einheiten
Power (kW)648
Speed (rpm)1200
Fuel TypeLNG/HFO (Dual-Fuel)
ConfigurationL
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