Main Engine 4-Stroke · Main Engines (4-Stroke)
Wärtsilä's 12VW31SG is a marine diesel engine designed for various maritime applications. Manufactured by Wärtsilä, this engine operates on LNG and features a V-shaped configuration with twelve cylinders. Capable of producing 3600 kW at a speed of 750 rpm, it supports efficient operations through two-stage turbocharging with intercooling and common rail direct injection. Known for its robustness, the 12VW31SG is part of Wärtsilä’s W31SG family, which has seen significant global adoption since its introduction in 2015. Common issues include poor combustion at low load operation, cylinder liner wear, and fuel injection system concerns, with extended overhaul intervals for the high-pressure fuel pump noted.
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