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8LW20DF-GS-60Hz

Auxiliary Engine (Generator Set) · Auxiliary Engines

Class-certified type (DNV register) · technical data sheet not yet verified
840 kWPower
8Cylinders
200 mmBore
280 mmStroke

This diesel engine operates on a four-stroke principle, featuring a direct injection system and turbocharging to ensure efficient combustion and performance. The Wärtsilä 8LW20DF-GS-60Hz is a dual-fuel engine capable of running on LNG and heavy fuel oil (HFO), providing a versatile and efficient power solution for marine applications. This engine has a displacement of 200 mm bore by 280 mm stroke, producing a total power output of 840 kW at 1080 rpm. The 8LW20DF-GS-60Hz is part of the W20DF-GS family and is designed to operate at 60 Hz frequency, with a generator set output of 798 kW and 998 kVA. Wärtsilä’s comprehensive monitoring systems and maintenance solutions, such as the Balancing Shaft Monitoring System and upgrades for turbocharger cooling and fuel injection equipment, help to mitigate common issues like bearing wear on the balancing shaft and excessive turbocharger temperatures. Regular inspections of the cylinder liner wear and fuel injection components are recommended to prevent significant engine damage and 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)840
Speed (rpm)1080
Fuel TypeLNG/HFO (Dual-Fuel)
ConfigurationL
Genset Output (kW)798
Genset Output (kVA)998
Frequency (Hz)60
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