Main Engine 4-Stroke · Main Engines (4-Stroke)
The 16-cylinder W31 family of engines is a heavy-duty marine diesel power plant. Manufactured by Wärtsilä, the 16VW31 model delivers an impressive 4880 kW at 750 RPM, configured in a V-formation with a bore of 310 mm and a stroke of 430 mm. These engines are designed for use with heavy fuel oil (HFO), marine diesel oil (MDO), or gas oil (GO). They meet the IMO Tier II emissions standard under MARPOL 73/78 Annex VI, ensuring compliance with international environmental regulations. Regular maintenance checks include visual inspections of piston crowns and rings by borescope through the indicator cock, monitoring cylinder cooling water temperatures, and verifying engine load profiles to prevent common issues such as cold corrosion in liners and piston ring wear during low-load operations.
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