New multi fuel engine accelerates decarbonized operations

Wärtsilä 46TS-DF multi fuel engine has the highest efficiency thus far achieved in the medium-speed engine market, in gas fuel mode.

Wärtsilä announces the launch of the latest addition to its multi-fuel engine portfolio. The Wärtsilä 46TS-DF engine, designed with a focus on efficiency, environmental performance, and fuel flexibility. Hence, signaling a new era of medium-speed marine engines. In gas fuel mode, the engine has the highest efficiency thus far achieved in the medium-speed engine market.

First order

The first order for this multi fuel engine type came by Chantiers de l’Atlantique for Royal Caribbean Cruises in April 2021. The engines will head to their latest Oasis-class ship ‘Utopia of the Seas’. The ship is in construction by the shipyard Chantiers de l’Atlantique. Note that, it will feature six Wärtsilä 46TS-DF engines with Gas Valve Units, NOx Reducer SCR systems, LNGPac, and Transverse Thrusters.

“Cutting-edge efficiency and leading environmental performance are crucial factors when designing our new ships… These engines are the ideal fit to power the latest addition to our fleet while advancing our sustainability journey.”

Harri Kulovaara, EVP Newbuilding and Innovation, Royal Caribbean Group.

The overriding basis for this new engine launch is; to be able to offer a future-proof solution for owners and operators to reach decarbonization targets. The Wärtsilä 46TS-DF has a two-stage turbocharging to deliver high levels of efficiency and power density across a wide operational range for vessels in all segments of the industry. This level of efficiency reduces fuel consumption and lowers emissions. In the meantime, being easily retrofittable for future carbon-neutral and carbon-free fuels as they become widely available.

“The maritime sector has to adapt to the transitional effects caused by the need to meet decarbonisation goals within a relatively short period of time… This new engine launch provides an important boost towards achieving those goals. It delivers the power to change by setting a new benchmark for greater sustainability through high efficiency, emissions performance, and fuel flexibility.”

says Stefan Nysjö, Vice President, Power Supply, Wärtsilä Marine Power.

Moreover, it is available in 6 to 16-cylinder configurations. Therefore, corresponds to a power output range of 7.8 to 20.8 MW at 600 rpm. It features an intrinsically modular design, which simplifies upgradability and modifications for alternative future fuels.

The dual-fuel Wärtsilä 46TS-DF engine can run LNG, which dramatically reduces air pollutants. Additionally, offers a viable platform for further decarbonization through the use of bio- or synthetic methane in the future.

Source: Wärtsilä

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