Main Engine 4-Stroke · Main Engines (4-Stroke)
Medium-speed engines are essential for powering a wide range of marine vessels, from cargo ships to ferries. This engine boasts a 7-cylinder, 4-stroke configuration with a bore of 250mm and a stroke of 350mm, achieving a power output of 1225 kW at 1000 rpm. It is designed to operate on both Heavy Fuel Oil (HFO) and Marine Diesel Oil (MDO). The engine's "L" configuration indicates a layout with cylinders arranged in a single row. Its fuel injection system employs common-rail high-pressure injection technology, ensuring efficient combustion and optimal performance. This engine is capable of achieving a TBO (Time Between Overhaul) of up to 32,000 hours, demonstrating its robust design and reliability. The Wärtsilä 7LW25 engine is classified as IMO Tier III compliant in LNG mode and, with NOR in Diesel/NH3 mode.
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