News | EQUIPMENT
Propulsion Wärtsilä cooperates
Wärtsilä and IHI Marine United Inc. (IHIMU) have concluded a cooperation agreement to incorporate Contra-Rotating Propeller (CRP) systems developed by IHIMU into Wärtsilä’s propulsion systems for diesel- electric driven ships offered to European customers. The IHIMU CRP system is said to improve
propulsion efficiency by 10% over a conventional diesel- electric propulsion configuration, and is applicable to all vessels from small ships to large LNG carriers. Tis efficiency improvement translates into significant fuel savings, enabling a short return on investment, as well as reduced greenhouse gas emissions. In the future, the application of the CRP system
could be extended to include hybrid (mechanical driven and electric driven) propulsion systems, and four-stroke mechanical systems. In a separate announcement, Wärtsilä and Hitachi
Zosen Corporation have signed a 10 year renewal of the existing cooperation agreement for the marketing, sale, manufacturing and servicing of Wärtsilä low-speed marine diesel engines. Hitachi’s low-speed engine business is handled by the group company Hitachi Zosen Diesel & Engineering Co Ltd at its Ariake Machinery Works in Kumamoto Prefecture, Japan. Te licence cooperation agreement is a basis for the
exchange of diesel engine technology between Wärtsilä and Hitachi.
Contact Wärtsilä Corporation, John Stenbergin ranta 2, P.O. Box 196, FI-00531 Helsinki. Finland. Tel +358 10 709 0000 Fax +358 10 709 5700
www.wartsila.com
Picture of the Contra-Rotating Propeller (CRP) system.
Layout of a typical arrangement for a Wärtsilä - IHIMU CRP system in diesel-electric mode.
Ancillary equipment Torm aware of
bearing wear Kongsberg Maritime made the first deliveries of its new bearing wear monitoring system (BWMS) in March 2009, for a series of 11 vessels in production in China for Danish shipping company Torm. Te engine monitoring solution was ordered in February 2009 and will integrate with the K-Chief 500 automation solution already selected for all 11 newbuilds. Te Kongsberg Maritime BWMS is designed to monitor
wear in bearings of large two-stroke diesel engines. It will provide early warning if any of the three crank-train bearings (crosshead, crank and main bearings) experience unexpected wear problems during ship operation, enabling the crew to carry out preventative engine maintenance in order to save downtime and money. Te system is available as a stand-alone solution or
can be fully integrated with the Kongsberg Maritime K-Chief 500 and AutoChief C20 automation systems. In the case of the Torm newbuild vessels, the system will use the bearing wear monitoring mimic in the K-Chief 500 to monitor the wear and trending measurements, and a two level alarm will also be handled by the K-Chief 500 automation system. Te Torm vessels will be powered by MAN 6S50ME-B
Mk8 engines and the BWMS will be installed by engine builder DMD in China.
Contact Kongsberg Maritime,
P.O.Box 483, NO-3601 Kongsberg, Norway. Tel +47 32 28 50 00 Fax +47 32 28 50 10
www.km.kongsberg.com
Ancillary equipment NSC radar goes 14
wide screen Raytheon Anschütz has launched a new range of wide-screen NSC radars. Te wide screen displays in 16:10
The Naval Architect April 2009
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