Wärtsilä
Wärtsilä 12LW34SG
Wärtsilä 34DF / 34SG — Viertakt-Marinediesel, Bohrung 340 x Hub 400 mm, 720, 750 rpm, 2610 (6L @ 520 kW/cyl aux) to 9800 (20V @ ~490 kW/cyl). Brennstoff: Dual-fuel (34DF): LNG/HFO/LFO/Biofuel; Gas-only (34SG): Natural Gas/Biogas/Syngas/H2-blend. Status: In production (34DF since 2009, 34SG based on proven 32 platform since mid-1990s; 34SG variants actively marketed 2022-present). Verifiziert, Datenblatt verlinkt.
5760.0 kW
Power
Engine Specifications
12
Cylinders
340 mm
Bore
400 mm
Stroke
🔧 Komponenten & Aufbau
Component data being added…
📊 Technische Daten
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
configuration
L
rpm
750
fuel type
Natural Gas
technology
Spark-Ignited Gas (SG)
displacement l per cyl
36.3
bore mm v
340
stroke mm v
400
rpm v
720, 750
fuel v
Dual-fuel (34DF): LNG/HFO/LFO/Biofuel; Gas-only (34SG): Natural Gas/Biogas/Syngas/H2-blend
status v
In production (34DF since 2009, 34SG based on proven 32 platform since mid-1990s; 34SG variants actively marketed 2022-present)
datasheet url
https://www.wartsila.com/docs/default-source/energy-docs/technology-products/product-leaflets/wartsila-34df.pdf?sfvrsn=add2a345_19
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Spare parts data being added…
Equipment-Model #66610
· ✓ still in production