Finland: Wartsila's New RT-flex50 Version D Low-Speed Engine Tested

Wärtsilä successfully tested new RT-flex50 version D low-speed engine with turbocharger. This new Wärtsilä engine supports the industry’s need for low-speed, 2-stroke engines for smaller vessels. It offers lower operating costs and improved environmental sustainability.

Wärtsilä, the marine industry’s leading solutions and services provider, has successfully tested its first Wärtsilä RT-flex50 version D engine with a turbocharger (TC) installed on the driving end side. With the addition of this engine, Wärtsilä now has an additional 2-stroke engine that can be fitted to smaller vessel types. The derated engine runs on lower rpm’s and features reduced fuel consumption, thereby enabling lower emission values to be achieved – including smokeless operation, especially at low engine load.

The RT-flex50 version D engine with turbocharger on the driving end side expands the possible applications of Wärtsilä 2-stroke engines with 50 cm cylinder bore for new vessel constructions.

Due to its narrow design, the new engine version will be used for ship designs with slim stern sections where the current standard execution, with turbochargers mounted on the exhaust engine side, does not fit. The RT-flex50 version D can now be used instead of other engine types featuring a smaller cylinder bore and higher speed. In many cases the higher performance of the cylinders allows the use of one less cylinder and can, for example, reduce maintenance costs. Thanks to the low speed of the engine and propeller, the total fuel consumption of the vessel is considerably reduced.

With the new RT-flex50 version D Wärtsilä completes its product range in this market segment. This engine opens new market potential for Wärtsilä 2-stroke engines,” says Martin Wernli, President, Wärtsilä Switzerland and Vice President, Product Centre 2-stroke.

The Wärtsilä RT-flex50 is a low speed, 2-stroke engine with fully electronic control of the exhaust valve activation and fuel injection. It is designed to operate on a wide range of fuels, from marine diesel oil (MDO) to heavy fuel oil (HFO), of different qualities.

The TC on the new engine is positioned directly above the fly wheel at the driving end of the engine to save space. Typical applications would be in small bulker and tanker vessels, ‘handysize’ and container vessels, and feeder ships.

Most engine components for the existing RT-flex50 version D TC exhaust side and the new RT-flex50 version D with TC on the driving end side, are the same. This makes the new product attractive for owners with RT-flex50 type engines already in their fleet, since there is a commonality of spare parts.

Testing of the engine took place at Wärtsilä’s licensee Hyundai Heavy Industries in South Korea, and was completed in April 2012.

Shipbuilding Tribune Staff, June 11, 2012; Image: wartsila

Share this article

Follow World Maritime News

Posted on June 11, 2012

In Depth>


<< Nov 2015 >>
26 27 28 29 30 31 1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 1 2 3 4 5 6

Salvage Law & Practice Seminar

Salvage Law & Practice at a glance:
Lloyd’s Open Form – contract design, administration and recent cases
special compensation awards…

read more >

CWC Sixteenth World LNG Summit & Awards Gala Dinner

The summit will provide a perfect opportunity to understand how key players are responding to the price fluctuations and what the outlook…

read more >

International WorkBoat Show

The event offers considerable opportunities to participating business houses to strengthen their business networks, and get familiar with…

read more >

Marintec China 2015, Shanghai, China


Facts & Figures of Marintec China:
• The exhibition spread over 70,000 square metres in Shanghai New International Expo Centre
• Over 1,700 exhibiting companies were participating in the event
• 57,888 quality trade visitors from 88 countries/regions
• 16 national & regional pavilions from Austria, China, Denmark, Finland, France, Germany, Hong Kong SAR, Japan, Korea, the Netherlands, Norway, Singapore, Sweden, Taiwan region, the United States and the United Kingdom were organised

About Marintec China

Marintec China 2015 will be held on 1-4 December 2015 in Shanghai. With increasing worldwide recognition and reputation throughout the past three decades, the exhibition is attracting an increasing number of high-profile exhibitors and visitors from around the world.

Regarded as the only gateway to the Asian maritime market, Marinetech China has become larger than ever! Being the most recognized maritime trade show in Asia, Marintec China is definitely an international marketplace for buyers to source from international sellers showcasing their latest marine, ship design, offshore engineering and port technology.

Over the years, Marintec China has grown to reflect the size and importance of the Asian maritime market. Marintec China 2013 has broken all the previous records attracting more than 1,700 exhibiting companies from 32 countries /regions and 16 group pavilions, making it the most international and authorised industry event in Asia. Taking place once every two years, Marintec China 2015 edition is a unique opportunity for suppliers to connect with new customers and re-connect with existing contacts from the region, and final one to present new products and services to the trade visitors and experts from all parts of the world.

Visit Marintec China 2015 website for more details

read more >