Auxiliary Engine (Generator Set) · Auxiliary Engines
This equipment category includes large-scale maritime power generation systems. The Wärtsilä 9LW31DF-GS-50Hz is a dual-fuel engine designed for marine applications, capable of operating on LNG or heavy fuel oil (HFO), with a power output of 2,520 kilowatts at 750 rpm and a frequency of 50 Hz. Known for its efficiency and reliability, this engine family has been in production since 2015, with over 1,000 megawatts installed globally and more than one million running hours logged. The engine features two-stage turbocharging with intercooling, common rail direct injection, and a bore of 310 millimeters and stroke of 430 millimeters. However, operators should be aware of potential issues such as low-load combustion problems, cylinder liner wear, fuel injection system concerns, and crankcase deposits, which can affect performance and require regular maintenance.
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