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Rolls-Royce / Bergen

18VB36:45DF

Main Engine 4-Stroke · Main Engines (4-Stroke)

Class-certified type (DNV register) · technical data sheet not yet verified​‌⁠‍‌​⁠‌⁠‍​‍​⁠⁠‌‌⁠‌‌
9,360 kWPower
18Cylinders
360 mmBore
450 mmStroke

The Rolls‑Royce/Bergen 18VB36:45DF is an 18‑cylinder V‑type, 4‑stroke dual‑fuel (LNG/HFO) marine gas engine delivering 9 360 kW at 720 rpm, featuring spark‑ignition lean‑burn combustion and a variable‑geometry turbocharger for high efficiency and low emissions.

Specifications

Technical data.reference — unverified

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Ignition SystemSpark-ignition lean-burn Otto cycle with individual cylinder pressure monitoring (CPM)
Turbocharger TypeVariable Turbine Geometry (VTG) with wastegate
Fuel InjectionPort injection with Variable Valve Timing (VVT)
Specific Energy Consumption (B36:45)7,300 kJ/kWh mechanical ISO with engine-driven pumps
Lubricating Oil Consumption< 0.4 g/kWh
NOX Emissions500 mg/Nm³ @ 5% O₂
Electrical Efficiency48.6% (B35:40V20); 48.5-48.9% (B36:45 series)
Cylinder Power Output438 kW/cyl (B35:40); 600 kW/cyl (B36:45)
Dry Weight ExamplesB35:40V12AG: 10,600 kg; B35:40V20AG: 13,100 kg
GHG vs Diesel22% lower greenhouse gas emissions
Power (kW)9360
Speed (rpm)720
Fuel TypeLNG/HFO (Dual-Fuel)
ConfigurationV
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