Auxiliary Engine (Generator Set) · Auxiliary Engines
This engine operates on a four-stroke cycle, utilizing dual-fuel capability to run on both LNG and HFO. The Wärtsilä 8LW31DF-GS-60Hz boasts a 2240 kW output and features a robust two-stage turbocharging system with intercooling. The engine's eight cylinders, each with a bore of 310 mm and a stroke of 430 mm, deliver a power output of 610 kW per cylinder when running on diesel fuel. The engine is designed for operation at 900 rpm and produces 2128 kW of power for generator sets. The Wärtsilä 8LW31DF-GS-60Hz is equipped with a common rail direct injection system and a valve layout of two inlet and two exhaust valves per cylinder. With a mean effective pressure of 30 bar and an SFOC of 167.7 g/kWh at its optimal point, the engine emphasizes efficiency. The 8LW31DF-GS-60Hz is currently in production and has been since 2024, with over 1,000 MW installed globally and over 1 million running hours logged.
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