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Wednesday, September 18, 2019  (Comments: 1)

Wärtsilä is launching the 31SG pure gas engine - based on the successful Wärtsilä 31 platform - for marine market applications.

Following Wärtsilä’s introduction of dual-fuel engine technology in the 1990s, LNG has become established as a viable and attractive marine fuel. This has led to the rapid expansion of the global LNG bunkering infrastructure, which sets the stage for the next evolutionary step, namely a larger scale application of pure gas engines within the marine and offshore industries.

The diesel version of the engine has been recognised as being a particularly efficient four-stroke diesel. The Wärtsilä 31SG engine further reduces the total cost of ownership and the environmental footprint for vessels operating in regions where there is a developed gas infrastructure.

The commercial launch of the Wärtsilä 31SG will take place at the Gastech 2019 conference and exhibition being held in Houston, Texas, and the Neva St. Petersburg exhibition and maritime forum in St.Petersburg, Russia.

“The highly efficient Wärtsilä 31SG moves the industry forward by providing owners and operators with a practical means for lowering costs and enhancing environmental sustainability. The gas-only focus and lean-burn spark ignition technology allows for further optimisation of thermal efficiency, while lowering greenhouse gas emissions and facilitating adaptations for alternative heavier gas fuels, such as LPG,” said Rasmus Teir, Product Manager, Wärtsilä Marine.

More than 1800 SG lean-burn gas engines have been delivered, with 37 million running hours accumulated in land-based energy applications. The 31SG was introduced to the energy market in 2017, and can now offer reliable pure gas solutions with low lifecycle costs for marine customers.

The increasing adoption of hybrid propulsion offers additional opportunities for pure gas engines. The Wärtsilä 31SG is ideally suited for hybrid applications, since it provides outstanding thermal efficiency while also providing investment cost reductions that help offset the additional cost of energy storage. Pairing the Wärtsilä 31SG with battery packs furthermore enables redundancy, while securing total system efficiency.

This latest Wärtsilä development is in line with the company’s target for reducing the greenhouse gas emissions from gas engines by 15% from 2015 levels by 2020.

Reader Comments (1)

What is the thermal efficiency of the engine at 90% Full Power rating?

By William Harris on Wednesday, September 25, 2019

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