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Rolls-Royce / Bergen
8LB35:40-GS-60Hz
The Rolls‑Royce/Bergen 8LB35:40‑GS‑60Hz is an 8‑cylinder medium‑speed diesel generator set delivering up to 4 080 kW (mechanical) and 3 876 kW electrical at 60 Hz, with spark‑ignition lean‑burn technology for high efficiency and fuel flexibility.
4080.0 kW
Power
Engine Specifications
8
Cylinders
350 mm
Bore
400 mm
Stroke
4-stroke
Stroke Type
Components & Design
Component data being added…
Technical Data
Ignition System
Spark-ignition lean-burn Otto cycle with individual cylinder pressure monitoring (CPM)
Turbocharger Type
Variable Turbine Geometry (VTG) with wastegate
Fuel Injection
Port 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 Emissions
500 mg/Nm³ @ 5% O₂
Electrical Efficiency
48.6% (B35:40V20); 48.5-48.9% (B36:45 series)
Cylinder Power Output
438 kW/cyl (B35:40); 600 kW/cyl (B36:45)
Dry Weight Examples
B35:40V12AG: 10,600 kg; B35:40V20AG: 13,100 kg
GHG vs Diesel
22% lower greenhouse gas emissions
power kw
4080
rpm
900
fuel type
HFO/MDO
configuration
L
genset kw
3876
genset kva
4845
frequency hz
60
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Common failures & inspection points
Methane slip in exhaust (100-3000+ ppm typical for lean-burn SI engines; Bergen designed B36:45 to minimize)
Piston ring carbon deposits at TDC zone from high combustion temperatures in lean-burn operation
Turbocharger compressor wheel blade erosion and FOD (foreign object damage) requiring visual borescope inspection
Fuel solenoid cut-off valve sticking or seal degradation (safety-critical for spark-ignited marine engines)
Cooling water system corrosion from improper jacket water chemistry (pH, conductance, chloride, iron content critical)
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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Equipment Model #125247
· ✓ still in production
Wer liefert dieses Teil? 12 Betriebe im Verzeichnis · 6 aus Herstellerlisten
DINTEC Co., Ltd.
Busan, South Korea
AEGIR-Marine BV
Cothen, Netherlands
AHLSELL NORGE AS
Oslo, Norway
Arcolec
La Perouse, Australia
Japan Marine (S) Pte Ltd
Singapore, Singapore
Japan Marine (S) Pte Ltd
Singapore, Singapore
Lubrafil BV
Barendrecht, Netherlands
Marine Technic A/S
Naestved, Denmark
Mistral Marine Solutions
Switzerland
VTE-Filter GmbH
Norderstedt, Germany
VTE-Filter GmbH
Norderstedt, Germany
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