"> Wärtsilä 16VW20DF
OceanSphere
Engines
⚓ Working on this equipment?
Ask the AI troubleshooter, log your hours on board and turn them into invoice-ready service reports — for this exact model.
Start free — 14 days →
No credit card required
🔧 69 verified suppliers & service companies for Wärtsilä in the Maritime Network Find suppliers →
Is Wärtsilä your company? Claim this page
Wärtsilä

16VW20DF

The Wärtsilä 16V20DF is a 16‑cylinder V‑type, medium‑speed (up to 1200 rpm) dual‑fuel main propulsion engine delivering about 1.7 MW per cylinder and capable of running on LNG or HFO with low specific fuel consumption.

1728.0 kW
Power

Engine Specifications

16
Cylinders
200 mm
Bore
280 mm
Stroke
4-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

Bohrung × Hub 200 × 280 mm
Hubraum pro Zylinder 8,8 l
Leistung pro Zylinder (aktuell) 185-220 kW (abhängig von Variante/Drehzahl)
Verdichtungsverhältnis 15:1
Spezifischer Brennstoffverbrauch (SFOC) 186-187 g/kWh (ISO-Bedingungen)
Motorkonfigurationen 4L20, 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-Geschwindigkeit 8,4 m/s (900 rpm), 9,3 m/s (1000 rpm)
Ventile pro Zylinder 2 Einlass + 2 Auslass
Bauform 4-stroke, non-reversible, turbocharged & charge air cooling, direct injection
Ausführungen verfügbar Diesel (W20) & Dual-Fuel (W20DF, seit 2011)
Liefermenge seit 1990er >7500 Motoren insgesamt; >6000 W20DF-Einheiten
power kw 1728
rpm 1200
fuel type LNG/HFO (Dual-Fuel)
configuration V

🤖 Ask about this model

One free question — answered like a marine engineer. No account needed.

Common failures & inspection points

Balance shaft bearing damage – can lead to major damage and downtime. Wärtsilä has developed a temperature monitoring system.

Perform continuous temperature monitoring of balance shaft bearings; check alarms

www.wartsila.com/services-catalogue...
Turbocharger overheating at higher speeds (1200 rpm upgrade) – new cooling pipe arrangement required. New KBB ST5 EP version is solution.

Turbocharger internal temperatures check; new cooling pipe installation at >1000 rpm operation verify

www.wartsila.com/insights/article/w...
Piston ring wear & cylinder liner scoring marks – early detection prevents critical wear and piston ring failure.

Visual inspection of cylinder liners every 4–8 weeks; piston crown check by mirror & flashlight

www.marineinsight.com/guidelines/re...
Fuel injection system wear (W20DF): pilot fuel injection nozzle can be damaged by cavitation erosion. Wärtsilä offers oil-cooled nozzle solution.

Einspritzdüsen auf Erosions-/Kavitations-Spuren inspizieren; Treibstoff-Filterung & -Sauberkeit überprüfen

www.wartsila.com/services-catalogue...
Pneumatisches Luftablass-Ventil (alt) – war ungenau. Neue hydraulische Lösung (Lisk-Ventil) in überarbeiteter Version.

Air release valve function check; on older engines check for hydraulics upgrade

www.wartsila.com/insights/article/w...

Type-general inspection and maintenance points for this equipment category — not model-specific.

Suppliers & Spare Parts

Direct links to manufacturer, datasheet, spare-parts portal and dealers — request access below.

📄 Request sourcing links & documents
🛠 Manage this equipment in your fleet

Cases, daily reports, timesheets and AI troubleshooting in the OceanSphere Marine app — free for 14 days.

Start free trial →
🔎 Suppliers & service for this equipment

Find manufacturers, repair shops and spare-part dealers in the Maritime Network — our global company directory.

Maritime Network →
Working on this unit?
Log hours, photos and findings into an invoice-ready service report — OceanSphere Marine, 14-day free trial.
Need a service partner for Wärtsilä?
114,000+ shipyards, suppliers and service companies in the Maritime Network directory.
Equipment Model #123722 · ✓ still in production