Main Engine 4-Stroke · Main Engines (4-Stroke)
The 7LW22 is a marine diesel engine belonging to the Wärtsilä family. This model, designed with a bore of 220 mm and a stroke of 320 mm, produces 1015 kW at 1000 rpm, making it suitable for various maritime applications. It operates on heavy fuel oil (HFO), light fuel oil (LFO), or marine diesel oil (MDO). The engine features a 4-stroke configuration and is equipped with turbocharged direct injection technology, contributing to its efficiency and reliability. Common maintenance issues include wear in the cylinder liners, piston plunger seals when using HFO, and bearing failures in the pleuelstangen (connecting rod bearings), highlighting the importance of regular inspections and timely replacements as advised by Wärtsilä's service documents.
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