Page 21: of Marine News Magazine (July 2013)

Wärtsilä 34DF engine. The upgraded version of the engine increases the ef? ciency in both liquid and gas operating modes and offers a power increase up to 500kw per cylin- der. When operating in gas mode, the Wärtsilä 34DF engine is already compliant with IMO Tier III regulations without any secondary exhaust gas puri? cation systems. SOx and CO2 emissions are notably reduced and smokeless operation is attained.When operating in gas mode, the Wärtsilä 34DF engine is already compliant with IMO Tier III regulations with- out any secondary exhaust gas puri? cation systems. Also when fueled by gas, the SOx and CO2 emissions are nota- bly reduced, and smokeless operation is attained. In liquid fuel oil mode, the Wärtsilä dual-fuel engines are fully com- pliant with the IMO Tier II exhaust emissions regulations set out in Annex VI of the MARPOL 73/78 convention. The engine is able to operate ef? ciently and economically on low sulphur fuels (<0.1% S), making it suitable for op- eration in emission-controlled areas. The Wärtsilä 34DF engine has proven to be a highly ef- ? cient and reliable solution for a wide range of vessel appli- cations. The latest version is expected to expand that range even further. Lower fuel consumption of this engine will further improve its environmental performance. Since 2003, the Wärtsilä 34DF has paved the way in the LNG-fuelled offshore support vessel market. Today this product is being mainly used in tugs, ferries, Ro-Ro, Ro-Pax and workboats. The new and upgraded version of the Wärtsilä 34DF en- gine increases the ef? ciency in both liquid and gas operating modes and offers a power increase up to 500kw per cylinder. This increased output means that the Wärtsilä 34DF now covers a power range from 2,9 MW to 8 MW. In www.marinelink.com MN 21MN July2013 Layout 18-31.indd 216/27/2013 12:59:55 PM