OceanSphereENGINES

W22

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

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

The Wärtsilä W22 (Vasa 32) is a medium‑speed, four‑stroke trunk‑piston diesel main engine designed for ship propulsion, notable for its large bore (220 mm), relatively low rpm (≈900) and ability to run on heavy fuel oil or marine gasoil.

Specifications

Technical data.reference — unverified

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Type4-Takt, Direkteinspritzung, turbogekühlt und Ladeluftkühlung
Verdichtungsverhältnis (Vasa 32)13.8:1
Mittlerer Druck (D-Rating)21.9 bar
Mittlerer Druck (E-Rating)24 bar
Spezifischer Brennstoffverbrauch (100% Last HFO)187 g/kWh
Spezifischer Brennstoffverbrauch (85% Last HFO)185 g/kWh
Mittlere Kolbengeschwindigkeit (Vasa 32)8.4 m/s
Verdrängervolumen je Zylinder (Vasa 32)28.15 dm³
Ventile je Zylinder2 Einlass + 2 Auslass (Vasa 22: 4-Ventil-Technologie)
SchmiersystemZirkulationsöl (Zahn- und Radpumpen)
Speed (rpm)900
ConfigurationL
Fuel TypeHFO/MGO
TechnologyMedium-Speed Trunk Piston
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