Main Engine 4-Stroke · Main Engines (4-Stroke)
Designed with a medium-speed trunk piston technology, the Wärtsilä 9LW38 engine delivers a robust and efficient performance for marine applications. This model features nine cylinders arranged in an L-configuration, providing a total power output of 6300 kW at 600 rpm. Each cylinder has a bore of 380 mm and a stroke of 475 mm, contributing to a displacement of 53.9 liters per cylinder. The engine is versatile, capable of running on heavy fuel oil (HFO) or marine gas oil (MGO). It is equipped with two inlet and two exhaust valves per cylinder, ensuring optimal combustion efficiency. Despite being part of the legacy W38 family, in-service units continue to receive support and upgrade packages from Wärtsilä, ensuring their reliability and performance. Common maintenance concerns include cold corrosion of cylinder liners due to sulfuric acid formation, wear and degradation of piston rings, and the need for major turbocharger overhauls every 50,000 operating hours. These issues are well-documented and can be managed through regular inspection and service protocols.
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