Auxiliary Engine (Generator Set) · Auxiliary Engines
This marine engine is commonly found in large cargo vessels and offshore platforms, where it operates efficiently with dual-fuel capability, switching between LNG and heavy fuel oil (HFO) as needed. The Wärtsilä 12VW31DF-GS-60Hz engine delivers a continuous output of 3360 kW at 900 rpm, making it suitable for prime power generation and propulsion systems. With a displacement of 12 cylinders arranged in a V-configuration, each cylinder provides approximately 610 kW in diesel mode, supported by two-stage turbocharging and intercooling for optimal performance. The engine's robust design includes common rail direct injection, which enhances fuel efficiency and reduces emissions. Despite its powerful output, the engine requires careful maintenance, particularly during low-load operations, to prevent issues such as poor combustion, carbon deposits, and turbocharger fouling. Regular inspections and the Slow Steaming Upgrade Kit offered by the manufacturer help mitigate these risks.
Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.
Free of charge — send us your request for Wärtsilä equipment. Our team checks it and replies by e-mail.
Other models of the same equipment type, Wärtsilä first.
Tell us what you need for this Wärtsilä 12VW31DF-GS-60Hz — a part, a service call, a second opinion. Are you Wärtsilä? Claim this brand page.
Service engineer? Write the day report for this 12VW31DF-GS-60Hz in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →
Yes. Specifications, documents and service notes for this model are readable without an account. An account adds saved searches and requests, nothing is taken away.
Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.
Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.