Wartsila Completes Testing of Brand New 2-Stroke Dual-Fuel Engine Technology

By Curious
The biggest service provider in the maritime business, Wartsila, introduced a completely new brand of vessel engines, which are based on well-proven and established low pressure technology. Wartsila successfully completed tests with the new 2-stroke dual-fuel engines on gas.

The 1st of the Wartsila's engines, RT-flex50DF is scheduled to be delivered by the end of 2014. The implications of the new Wartsila engines are for the vessel operators and owners are going to be referred to as a game-changer for merchant shipping. The other series of the brand new engines of Wartsila, the X-series are scheduled to be ready for delivery in 2015 and 2016.

Both new 2-stroke engines of Wartsila are going to be dual-fuel (DF) low pressure versions. The brand new Wartsila engines will offer capital expenditure reductions (CAPEX) of 15-20 per cent, revealed studies. This results will be achieved by substantially lower and much simpler cost of liquefied natural gas (LNG) and gas handling system, which operates at pressure, working under 10 bars. Which is really impressive with the new engines technology is that there are no needed cleaning systems for exhaust gases to meet any emission regulations. The brand new Wartsila engines are constructed to meet IMO Tier III emissions compliant in gas mode and to cover the Tier II minimum level with liquid natural gas.

In addition, there will be considerable gains on the operating expenditure (OPEX) side with the new engine technology of Wartsila. This OPEX will be due to the otioseness of the external high pressure compression system for gas and the NOx abatement system on the ship will be no longer required. The new technology of the engines makes the gas operation across the whole load range stable. Due to this, there will be no longer needed to switch to diesel as is the current case with other ship technologies. Furthermore, the fuel consumption of the technology is only 1% of the entire fuel amount, and therefore pretty much lower compared to other technologies.

The new engine low pressure system for gas of Wartsila fulfils all the safety requirements. Since gas technology with low pressure is the standard for all four-stroke engine makers today, the merit of this concept is clearly proven.

“The benefits of the new low pressure dual-fuel technology for 2-stroke engines are significant. Describing this as a game-changing development for merchant shipping is certainly no exaggeration, since the many advantages of being able to use gas and LNG as primary fuel are now, for the first time ever, available to virtually all vessel types. Our well proven technologies for both the engines and the onboard gas and LNG handling systems, can now be applied to this wider market. With the adaption of low pressure dual-fuel technology to 2-stroke engines, Wärtsilä brings the proven advantages it has demonstrated in the 4-stroke, medium-speed DF engine market to its 2-stroke low speed engine customers,” says Mr Martin Wernli, Vice President, 2-stroke, Wärtsilä Ship Power.

The spokesperson of Wartsila announced that the company is currently in finalising all required documents for the 1st of its brand new engine types, the Wartsila RT-flex50DF. Furthermore, the Classification Society approvals preparations are underway.