OceanSphereENGINES

8LW34DF

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

Class-certified type (DNV register) · technical data sheet not yet verified​‌⁠‍​​⁠⁠‍‍​​‌‌​‌‌⁠⁠​
8Cylinders
340 mmBore
400 mmStroke
10454Dimensions

The Wärtsilä 8LW34DF is an 8‑cylinder, 4‑stroke, turbocharged trunk‑piston marine diesel engine delivering up to 3 120 kW at 720 rpm, capable of running on LNG or HFO in a dual‑fuel configuration.

Specifications

Technical data.from datasheet

Every value below comes from the manufacturer datasheet or class-society record on file for this model.

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 speed9.6-10.0 m/s
Compression ratio (16V/20V)12.6:1
Engine type4-stroke, turbocharged intercooled non-reversible
Swept volume per cylinder36.3 dm³
34DF Max output (16V main)8000 kW
34DF/34SG Max output (20V genset)9800 kW
34SG designSpark-ignited, lean-burn, pre-chamber
20V34SG dimensionsL:12.7m × W:3.3m × H:4.65m
20V34SG weight131,500 kg
Dimensions10454 mm🔖
Speed (rpm)720
Fuel TypeLNG/HFO (Dual-Fuel)
ConfigurationL
📄
Download datasheet (PDF) (125 KB)
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