OceanSphereENGINES

9LW32

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

Technical data from manufacturer or class sources · not yet verified by a person​‌​​‌​​‍‌​‍‍⁠​​​‍​⁠‌
9Cylinders
320 mmBore
400 mmStroke

The Wärtsilä 9LW32 is a medium‑speed, 9‑cylinder, inline diesel engine delivering about 5.2 MW at 750 rpm; its defining feature is the common‑rail fuel injection system that provides high specific power and fuel flexibility.

Specifications

Technical data.reference — unverified

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Displacement per cylinder32.2 liters
Specific power output (inline)580 kW/cylinder (at 750 RPM)
Specific power output (V-config)500-420 kW/cylinder (W32GD: 405-420 kW/cyl)
Configuration4-stroke, non-reversible, turbocharged, intercooled, direct fuel injection
Valves per cylinder2 inlet + 2 exhaust
Cooling systemSeawater and freshwater cooling; charge air cooling via cooler
TurbochargerNapier 357 (common); Wärtsilä turbocharger safety package available
ComplianceIMO Tier II (MARPOL 73/78 Annex VI)
ConfigurationL
Speed (rpm)750
Fuel TypeHFO/MGO
TechnologyCommon Rail Medium-Speed
Displacement l per cyl32.2
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