Main Engine 4-Stroke · Main Engines (4-Stroke)
This is a medium-speed marine diesel engine. The Wärtsilä 9LW32DF is a dual-fuel engine capable of running on both liquefied natural gas (LNG) and heavy fuel oil (HFO). It boasts a power output of 2970 kW at 750 rpm. The engine features a 4-stroke, L-configuration design with a bore of 320 mm and a stroke of 400 mm, resulting in a displacement per cylinder of 32.2 liters. The Wärtsilä 9LW32DF utilizes turbocharging and intercooling with a direct fuel injection system. It employs a seawater and freshwater cooling system, along with charge air cooling via a cooler. A Napier 357 turbocharger is commonly used, and Wärtsilä also offers a turbocharger safety package. This engine complies with IMO Tier II emission standards (MARPOL 73/78 Annex VI). The Wärtsilä 9LW32DF has been in production since the 1980s, with over 2500 units sold since 1998.
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