Wärtsilä
20VW31SG
Wärtsilä 31 (W31) — Viertakt-Marinediesel, Bohrung 310 x Hub 430 mm, 720, 750 rpm, 4880–9760 kW (8V31–16V31 @ 750 rpm); 4700–9400 kW @ 720 rpm. Brennstoff: Diesel (HFO, MDO, LFO), Dual-Fuel LNG/Diesel (W31DF), Natural Gas (W31SG). Status: In production (2024–present). First introduced 2015. Over 1,000 MW installed globally and >1 million running hours logged.. Verifiziert, Datenblatt verlinkt.
6000.0 kW
Power
Engine Specifications
20
Cylinders
310 mm
Bore
430 mm
Stroke
4-stroke
Stroke Type
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📊 Technische Daten
Cylinder power
610 kW/cyl (diesel)
Mean effective pressure (BMEP)
30 bar
SFOC (diesel)
167.7 g/kWh (optimal point)
Weight (8V31)
~57.1 tonnes (dry, diesel)
Weight (16V31)
~89–92.5 tonnes (dry, diesel)
Piston speed
10.75 m/s
Turbocharging
Two-stage turbocharging with intercooling
Fuel injection
Common rail direct injection
Valve layout
2 inlet, 2 exhaust valves per cylinder
power kw
6000
rpm
750
fuel type
LNG (Spark-Ignited)
configuration
V
bore mm v
310
stroke mm v
430
rpm v
720, 750
fuel v
Diesel (HFO, MDO, LFO), Dual-Fuel LNG/Diesel (W31DF), Natural Gas (W31SG)
status v
In production (2024–present). First introduced 2015. Over 1,000 MW installed globally and >1 million running hours logged.
datasheet url
https://www.wartsila.com/docs/default-source/product-files/engines/ms-engine/product-guide-w31.pdf (W31 diesel) + https://www.wartsila.com/docs/default-source/product-files/engines/df-engine/product-guide-w31df.pdf (W31DF)
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Equipment-Model #124316
· ✓ still in production