Wärtsilä
10V31
Guinness World Record holder as the world's most efficient 4-stroke diesel engine. Designed for both propulsion and power generation.
5600.0 kW
Power
Engine Specifications
10
Cylinders
310 mm
Bore
430 mm
Stroke
5,600 kW
MCR Power
750.0 rpm
MCR RPM
165.0 g/kWh
SFC
4-stroke
Stroke Type
Family: Wartsila Wartsila 31
· Tier: IMO Tier II
· Brennstoff: HFO, MDO
⚙️ Weitere Zylinder-Konfigurationen 3
🔧 Komponenten & Aufbau
Dual-Fuel System (Gas Mode)
Wartsila
W31 Gas Admission Valve (GAV)
Low-pressure gas admission valve per cylinder. Overhaul at 12,000 hrs. Leak test after every overhaul.
Lead time: 6 Wo.
18.0 kg
Dual-Fuel System (Gas Mode)
Wartsila
W31 Pilot Fuel System (DF variant)
Micro-pilot diesel injection for gas mode ignition. Pilot fuel consumption <1% of total energy. Overhaul pilot injector at 8,000 hrs.
Lead time: 6 Wo.
35.0 kg
Dual-Fuel System (Gas Mode)
Wartsila
W31 Pre-Chamber Assembly (DF)
Pre-chamber ensures stable ignition of lean gas-air mixture. Inspect at 8,000 hrs. Replace inserts at 16,000 hrs.
Lead time: 6 Wo.
8.0 kg
Fuel Pump (Jerk-Type / Common Rail)
Wartsila / L'Orange
W31 Common Rail Injection Unit
Common rail pressure up to 2200 bar. Rail and injector overhaul at 12,000 hrs. Monitor rail pressure stability.
Lead time: 8 Wo.
120.0 kg
📊 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
unified from engine model
True
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)
⚠️ Typische Ausfälle
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Spare parts data being added…
Equipment-Model #38953
· ✓ still in production