Main Engine 4-Stroke · Main Engines (4-Stroke)
The W46DF family of engines operates on a 18-cylinder V configuration with a 4-stroke cycle designed for maritime applications. Each cylinder in the 18VW46DF model can deliver up to 1200 kW at 600 rpm, making it suitable for large vessels where reliability and performance are critical. Manufactured by Wärtsilä, these engines run on a variety of fuels including LNG, HFO, diesel, biofuel, and dual-fuel options. The engine features direct fuel injection, turbocharging with intercooling, and is built to withstand extensive use, boasting over 7.2 million operational hours since 2004. Regular inspections for components like cylinder liner wear, piston crown erosion, and bearing temperatures are necessary due to common failures such as corroded exhaust valves and turbine damage from valve leaks.
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