Main Engine 4-Stroke · Main Engines (4-Stroke)
Designed for efficient and flexible operation in maritime applications, the Wärtsilä 8LW25 engine operates on a 4-stroke cycle with a bore of 250 mm and a stroke lengthened to 350 mm. Capable of delivering 1400 kW at 1000 rpm, this engine supports both heavy fuel oil (HFO) and marine diesel oil (MDO), alongside dual-fuel modes using liquefied natural gas (LNG) or ammonia (NH3). The Wärtsilä 25 is engineered to meet the challenges of modern maritime operations, with a time between overhauls up to 32,000 hours and native Tier III compliance in LNG mode. Regular maintenance checks for common issues such as high-pressure Common-Rail pump wear, piston ring wear during low-load operation, turbocharger contamination, and NOx reduction system performance are crucial for optimal engine longevity and efficiency.
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