OS
Wärtsilä

8V31

Guinness World Record holder as the world's most efficient 4-stroke diesel engine. Designed for both propulsion and power generation.

Wärtsilä 8V31
4480.0 kW
Power

Engine Specifications

8
Cylinders
310 mm
Bore
430 mm
Stroke
4,480 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

10V31
10 cyl · 5,600 kW
12V31
12 cyl · 6,960 kW
16V31
16 cyl · 9,280 kW

🔧 Komponenten & Aufbau 4

Fuel Pump (Jerk-Type / Common Rail) Wartsila / L'Orange
W31 Common Rail Injection Unit
common failures: ['Rail pressure regulator drift', 'Injector nozzle erosion from high injection pressure', 'HP pump plunger wear', 'Fuel leakage at rail connections']
source family: Wartsila 31
💡 Common rail pressure up to 2200 bar. Rail and injector overhaul at 12,000 hrs. Monitor rail pressure stability.
Lead time: 8 Wo.
Dual-Fuel System (Gas Mode) Wartsila
W31 Pilot Fuel System (DF variant)
common failures: ['Pilot injector nozzle clogging', 'Pilot fuel quantity control drift', 'Pilot fuel pump seal leakage']
source family: Wartsila 31
💡 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.
Dual-Fuel System (Gas Mode) Wartsila
W31 Gas Admission Valve (GAV)
common failures: ['Valve seat wear causing gas leakage', 'Actuator response time degradation', 'Seal failure causing gas bypass']
source family: Wartsila 31
💡 Low-pressure gas admission valve per cylinder. Overhaul at 12,000 hrs. Leak test after every overhaul.
Lead time: 6 Wo.
Dual-Fuel System (Gas Mode) Wartsila
W31 Pre-Chamber Assembly (DF)
common failures: ['Pre-chamber fouling from incomplete combustion', 'Flame propagation failure at low load', 'Erosion of pre-chamber orifices']
source family: Wartsila 31
💡 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.

📊 Technische Daten

notable features ["World's most efficient 4-stroke engine (SFC ~165 g/kWh)", '2-stage turbocharging', 'Common rail fuel injection', 'Modular design for flexible configuration']
unified from engine model True

📦 Verschleißteile

Spare parts data being added…

Equipment-Model #38952 · ✓ still in production