Wärtsilä extends engine portfolio with 62- an...
Wärtsilä Corporation, Trade & Technical Press release, 19 May 2011
Wärtsilä, the marine industry's leading ship power system integrator,
strengthens its offering in the mid-size, low-speed engine sector by adding new
62- and 72-bore low-speed engines to its portfolio. These standardised engines
offer high propulsion efficiency, reliability, and optimised total cost of
ownership for customers in the bulker, tanker, and feeder container markets.
Both engines employ well-proven Wärtsilä low-speed technology, and incorporate
electronically-controlled fuel supply and control. The 62-bore engine with a
bore of 620 mm has four to eight cylinders, each with an output of 2660 kW at a
speed of 97-103 rpm. The 72-bore engine has a bore of 720 mm and four to eight
cylinders, each with an output of 3610 kW at a speed of 84-89 rpm.
Development work on the new engines is carried out at Wärtsilä's Low-Speed
Competence Centre in Winterthur, Switzerland following a feasibility study in
2010. Wärtsilä's licensee partners in Asia are closely involved in the
manufacturing process. The first 62-bore engine will be available for delivery
in September 2013 and the first 72-bore engine will be available approximately
one year later. All Wärtsilä licensees will have the right to build the new
engines.
The new engines are designed to serve the merchant fleet in vessels that use
smaller engines. The primary targets for the 62-bore engine are smaller capesize
bulk carriers, Panamax bulk carriers, Aframax tankers, and handysize container
vessels, while capesize bulk carriers, Suezmax tankers, and Sub-Panamax to
Panamax container vessels are ideal applications for the 72-bore engines.
"At launch, the new engines are IMO Tier II compatible and available with IMO
Tier III solutions. The design philosophy and main engine parameters have been
selected to give high levels of reliability as the first priority. At the same
time, the design enables the lowest possible manufacturing costs," says Lars
Anderson, Vice President, Merchant, Wärtsilä Ship Power.
Since the engine design parameters also allow for a compact engine room,
shipyards can now use the same engine room module for various vessel types, from
bulk carriers and tankers to container vessels. Furthermore, owners can
rationalise their crew training and spares for the entire fleet.
Significant benefits for ship owners, operators, and shipyards
The new engines offer significant benefits to both shipowners and operators. The
stroke/bore ratio offers good internal efficiency with a gain of 1-2 percent
compared to current engines, and depending on the vessel type, the lower engine
speeds make it possible to improve propulsion efficiency by 2-6 percent.
The layout fields of both engines are extended to maintain output, while
allowing an increased shaft speed. The extended fields offer added flexibility
to select the most efficient propeller speed for the lowest daily fuel
consumption, and the most economic propulsion equipment, for a wide varity of
vessel types. This concept was first applied successfully with the Wärtsilä
RTA/RT-flex 82 bore engines.
The new engine designs also offer de-rating possibilities, which can further
improve either the engine's internal efficiency or its propulsion efficiency, or
both. Overall efficiency gains of 5-8 percent at vessel level can therefore be
expected. As this directly reduces the emission levels of carbon dioxide (CO2),
sulphur oxides (SOx), and nitrogen oxides (NOx), it will be easier for shipyards
to satisfy EEDI (Energy Efficiency Design Index) requirements.
Wärtsilä's leading common-rail technology
Wärtsilä is the market leader in common-rail technology for electronically-
controlled low-speed marine engines. These engines incorporate the latest
electronically-controlled common-rail technology for fuel injection, valve
actuation, engine starting, and cylinder lubrication with direct benefits to
shipowners.
Wärtsilä's common-rail technology provides a high degree of flexibility in
engine settings to give lower fuel consumption, very low minimum running speeds,
smokeless operation at all running speeds, and outstanding control of exhaust
emissions. The integrated redundancy of the engines ensures high reliability.
Furthermore, the excellent regulation of engine operation provided by the
Wärtsilä electronically controlled engine system, allows for good manoeuvring
capabilities and the lowest possible operating speed, for example, during canal
passages and port entrance. Wärtsilä's common-rail technology plays a key role
in enabling shipowners to meet the challenges of higher fuel costs.
Link to technical table
Link to picture of 62-bore engine
For further information, please contact:
Tomas Aminoff
General Manager, Portfolio Management
Wärtsilä Ship Power
Tel. +41 79Â 964 0035
tomas.aminoff@wartsila.com
Tuula Franck
Senior Manager, Media and Stakeholder Relations
Wärtsilä Corporation
Tel: +358 (0)400Â 267Â 555
tuula.franck@wartsila.com
Wärtsilä in brief
Wärtsilä is a global leader in complete lifecycle power solutions for the marine
and energy markets. By emphasising technological innovation and total
efficiency, Wärtsilä maximises the environmental and economic performance of the
vessels and power plants of its customers.
 In 2010, Wärtsilä's net sales totalled EUR 4.6 billion with more than 17,500
employees. The company has operations in 160 locations in 70 countries around
the world. Wärtsilä is listed on the NASDAQ OMX Helsinki, Finland.
www.wartsila.com
Picture of 62-bore engine:
http://hugin.info/131481/R/1516920/453313.jpg
Techincal table with engine extended layout field:
http://hugin.info/131481/R/1516920/453310.pdf
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Source: Wärtsilä Oyj Abp via Thomson Reuters ONE
[HUG#1516920]