Main Engine 4-Stroke · Main Engines (4-Stroke)
Engine maintenance and reliability are key factors for any maritime operation, and the Wärtsilä 8LW31 is designed with these considerations in mind. This engine boasts a robust design featuring two-stage turbocharging with intercooling, common rail direct injection, and a fuel-efficient technology capable of achieving 610 kW/cyl (diesel) with a Mean Effective Pressure (BMEP) of 30 bar. The Wärtsilä 8LW31 is an 8-cylinder, in-line (L) engine with a bore of 310 mm and a stroke of 430 mm, operating at 750 rpm. It is fueled by Heavy Fuel Oil (HFO) and Medium Grade Oil (MGO) and is capable of achieving a Specific Fuel Oil Consumption (SFOC) of 167.7 g/kWh at its optimal point. Weighing approximately 57.1 tonnes (dry, diesel), this engine is designed for continuous operation, logging over 1 million running hours globally. The Wärtsilä 8LW31 is available in a dual-fuel configuration (W31DF) and as a natural gas engine (W31SG), further expanding its operational versatility.
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