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Wärtsilä
6LW34DF-GS-60Hz
The Wärtsilä 6LW34DF-GS-60Hz is a six‑cylinder, 4‑stroke dual‑fuel (LNG/HFO) auxiliary engine coupled to an integrated generator set delivering about 2.2 MW of electrical power at 60 Hz.
2280.0 kW
Power
Engine Specifications
6
Cylinders
340 mm
Bore
400 mm
Stroke
4-stroke
Stroke Type
Components & Design
Component data being added…
Technical Data
Power per cylinder (main engine 34DF)
500 kW @ 750 rpm
Power per cylinder (auxiliary 34DF)
520 kW @ 720-750 rpm
Mean effective pressure (main)
20.0-19.8 bar
Piston speed
9.6-10.0 m/s
Compression ratio (16V/20V)
12.6:1
Engine type
4-stroke, turbocharged intercooled non-reversible
Swept volume per cylinder
36.3 dm³
34DF Max output (16V main)
8000 kW
34DF/34SG Max output (20V genset)
9800 kW
34SG design
Spark-ignited, lean-burn, pre-chamber
20V34SG dimensions
L:12.7m × W:3.3m × H:4.65m
20V34SG weight
131,500 kg
power kw
2280
rpm
900
fuel type
LNG/HFO (Dual-Fuel)
configuration
L
genset kw
2166
genset kva
2708
frequency hz
60
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Common failures & inspection points
Turbocharger bearing failure - bearing location pins can break, causing the shaft to rotate freely inside housing and potentially damaging the compressor wheel.
Fuel injector tip carbon deposits and clogging - when operating in backup fuel (diesel) mode, liquid fuel deposits on injector tip can thermally decompose ('cra
Gas valve unit (GVU) functionality criticality - GVU valve tightness and proper ventilation during stop sequences essential for safe operation; leakage prevents
Cylinder liner scuffing from insufficient lubrication - mirror polished finish and loss of crosshatch pattern indicate oil starvation; piston rings run dry caus
Load-sharing failures and abnormal shutdown sequences - improper sensor signals or fuel supply irregularities can trigger emergency stops; root causes (fuel sys
Type-general inspection and maintenance points for this equipment category — not model-specific.
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Equipment Model #124671
· ✓ still in production