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News | EQUIPMENT


Engines


for Seasall diesels Te latest Seasall marine engines developed from Hyundai’s automotive engines will use Cushyfloat elastomeric engine mounts from Trelleborg Industrial AVS as standard throughout its range. The two basic engine types in the range: the


Propulsion Trelleborg mounts Wärtsilä Energopac


125kW D170 series, which is developed from Hyundai’s 2.2 litre in-line four-cylinder, common rail diesel and the 176kW S240 series, developed from Hyundai’s V6 with piezo-controlled common rail injection. Both the D170 series and the larger engines are available in sterndriver, inboard and waterjet versions, all with a Cushyfloat four point mounting system. Te Cushyfloat design is a robust, low-profile


rubber/metal assembly, specially developed for reliable, long-life operation in harsh marine environments. In addition to suppressing vibration, they also


reduce structure-borne noise, so improving comfort on board. Minimising combustion noise and vibration is one of the main features of the Seasall range and has been a priority for the company’s engineers. Te Trelleborg engine mounts are equipped with a compact height adjuster allowing the installation to be adjusted at both front and rear.


Contact Trelleborg AB, P.O. Box 153, 231 22 Trelleborg, Sweden. Tel +46 410 670 00 Fax +46 410 427 63 www.trelleborg.com


The Cushyfloat from Trelleborg dampen vibrations from engines.


cuts costs Wärtsilä Energopac has recently shown in testing its ability to cut cost in fuel saving for the ship owner. Energopac is an integrated propeller and rudder design that effectively reduces flow separation behind the propeller hub, and thereby reducing frictional drag while preserving course-keeping capabilities. Recent trials carried out in cooperation with


the Spliethoff Group has shown that the Wärtsilä Energopac solution delivers significant reductions in fuel costs. Te trials involved eight 17,700dwt vessels, six of which were fitted with standard rudders and two with Energopac. Te trials have shown that the Energopac solution saves close to 4% power in design condition. Tis represents annual fuel cost savings of more than US$ 120,000 (at fuel prices in July 2010). “Aſter six months of operation, it has been shown


that the reality confirms the theory,” said Frank Louwers, director at Spliethoff. “Tis facilitated our decision to install the Energopac propulsion solution on the next series of another five vessels.” In addition to the Energopac systems already


delivered, another 20 Energopac systems have been ordered and will be delivered in 2010 and 2011. Reductions in fuel consumption depend on the


Wärtsilä’s Energopac is an integrated propeller and rudder design. Energopac solution delivers significant reductions in fuel costs.


18


The Naval Architect September 2010


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