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6LW20DF-GS-60Hz

Auxiliary Engine (Generator Set) · Auxiliary Engines

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

Regular maintenance and monitoring are essential for ensuring the optimal performance and longevity of marine engines. The Wärtsilä 6LW20DF-GS-60Hz is a dual-fuel engine designed for demanding maritime applications. This powerful engine boasts a 630 kW output and is capable of operating on both liquefied natural gas (LNG) and heavy fuel oil (HFO). Featuring a bore and stroke of 200mm and 280mm respectively, and six cylinders arranged in a L-configuration, the engine operates at a speed of 1080 rpm and generates 598 kW of electrical power. With a fuel consumption of 186-187 g/kWh under ISO conditions, the 6LW20DF-GS-60Hz delivers efficient performance while minimizing emissions. The engine's design incorporates a four-stroke cycle, turbocharging, and intercooling for enhanced power output and fuel efficiency. Wärtsilä has implemented a comprehensive monitoring system for the engine's balancing shaft, addressing a potential area of failure. The manufacturer also offers solutions for addressing potential issues related to turbocharger overheating, piston ring wear, and fuel injection system erosion.

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)630
Speed (rpm)1080
Fuel TypeLNG/HFO (Dual-Fuel)
ConfigurationL
Genset Output (kW)598
Genset Output (kVA)748
Frequency (Hz)60
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