Main Engine 4-Stroke · Main Engines (4-Stroke)
This is a marine diesel engine designed for propulsion and power generation in a variety of applications. It is the Wärtsilä 6LW31SG, a 6-cylinder, 1800 kW engine with a 750 rpm operating speed. The engine is fueled by LNG (Spark-Ignited) and boasts a two-stage turbocharging system with intercooling for enhanced performance. It features common rail direct injection and a 4-stroke cycle, achieving a mean effective pressure (BMEP) of 30 bar. The engine's design includes 2 inlet and 2 exhaust valves per cylinder, contributing to its efficient operation. The 6LW31SG is part of the W31SG family, a series known for its high efficiency and reliability. Its robust construction includes a bore of 310 mm and a stroke of 430 mm, resulting in a piston speed of 10.75 m/s. This model is currently in production and has a proven track record with over 1,000 MW installed globally and more than 1 million running hours logged.
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