The world’s most efficient 4 stroke engine up to today.

The Wärtsilä thirty one sets a benchmark for medium speed engines in efficiency and overall emissions performance, offering the best fuel economy of any four stroke engine in its class across the complete operating range.

It is available in 8 to 16 cylinder configurations with a power output from 4.2 to 10.4 MW at 720 and 750 revolutions per minute. This robust, reliable engine can withstand long intervals between overhauls, maximising vessel profitability and reducing maintenance cost and effort.Optimised efficiency for a wide range of applications.

The Wärtsilä thirty one is suitable for a broad range of ship types and applications including as a main propulsion engine in diesel-electric and hybrid installations or as an auxiliary engine. It can be optimised for running at constant speed or along a propeller curve.

The Wärtsilä thirty one represents a particularly good investment for passenger ferry operators who want to cut fuel costs and emissions. In the offshore sector, the Wärtsilä 31 is ideal for offshore supply vessels and drilling or semi-submersible vessels, where operational flexibility, high power density, long intervals between overhauls, and high levels of safety are paramount. 

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It is also well suited to specialised ships such as fishing vessels, icebreakers and other ice going vessels, and wind turbine installation vessels as it can be flexibly optimised for extreme conditions with stringent requirements and high demands on efficiency.

Operational features.

The engine’s modular structure enables outstanding multi-fuel flexibility. The diesel version is optimised for heavy or light distillate fuels, and the engine is also available in both dual-fuel and pure gas configurations.

KEY BENEFITS

Record-breaking efficiency 

• Low fuel consumption over a wide operating range

• High cylinder power, up to 650 kW/cylinder

• Fuel flexible – available in diesel, dual fuel and pure gas versions

• Meets IMO Tier 3 regulations when operating on gas, and with an Selective Catalytic Reduction when using diesel fuel. Read the continue of the story by visiting the source bellow.

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