OceanSphereENGINES

5LW34SG

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

Class-certified type (DNV register) · technical data sheet not yet verified​‌⁠‍​‌​​​‍⁠⁠⁠⁠‌​​‌‌⁠
1,975 kWPower
5Cylinders
340 mmBore
400 mmStroke
10454Dimensions

Crew members, engineers, and operators on board ships depend on reliable maritime equipment to ensure safe and efficient operations. Wärtsilä's 5LW34SG engine, with its dual-fuel capability for LNG or natural gas, supports these professionals by offering a robust power solution that meets the stringent demands of modern marine environments. This engine operates at a steady 720 RPM, delivering an impressive 1975 kW of power per cylinder, making it a cornerstone in today’s energy solutions. Engineers should be aware of common failures such as turbocharger bearing issues and fuel injector carbon deposits; regular inspections can help prevent these malfunctions. Proper maintenance routines ensure the engine's longevity and reliability, crucial for the day-to-day operations at sea.

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🔖
Power (kW)1975
Speed (rpm)720
Fuel TypeLNG (Spark-Ignited)
ConfigurationL
📄
Download datasheet (PDF) (125 KB)
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