Main Engine 4-Stroke · Main Engines (4-Stroke)
This product is a marine diesel engine. It is the Wärtsilä 8L31DF, a 4-stroke engine with 8 cylinders, a bore of 310 mm, and a stroke of 430 mm. The 8L31DF is a dual-fuel engine capable of running on both MDO and LNG. It boasts a maximum continuous rating (MCR) of 4480 kW at 750 rpm. This engine family, known as the Wärtsilä 31DF, is designed with an Otto-cycle lean-burn gas combustion system and pre-chamber ignition for stable gas combustion, meeting IMO Tier III standards in gas mode. The engine is also notable for being based on the world's most efficient 4-stroke diesel. The 8L31DF utilizes two-stage turbocharging with intercooling, common rail direct injection, and a valve layout of 2 inlet and 2 exhaust valves per cylinder.
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