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62 Maritime Reporter & Engineering News ? AUGUST 2013 TECHNICALPROPULSION UPDATES Wärtsilä said that its X40 two-stroke engine passed its Type Approval Test (TAT) carried out in Zhuhai, China, at Wärtsilä?s licensee Yuchai Ma- rine Power Co. Ltd. (YCMP). In passing the TAT, the engine is veri Þ ed as having fulÞ lled all classi Þ cation society requirements, and will be fully introduced to the market following its sea trials, which are now being un-dertaken. A feature of the testing was meeting the SOLAS (Safety of Life at Sea) standards. With a single engine powering the propeller, the engine must be capable of continuous operation under all conditions.The Wärtsilä X40 as well as the Wärtsilä X35 engines feature Wärtsilä?s second-generation version of its electronically controlled common rail sys-tem with time controlled fuel injection. The Wärtsilä Generation X Engines feature a higher stroke to bore ratio thus achieving lower engine speed and lower brake speciÞ c fuel consumption (BSFC). With this technology the fuel injection for each cylinder, as well as the cylinder lubrication, is con- trolled by a single module to provide excellent fuel efÞ ciency and reliability as well as lower operational costs. The engine also incorporates the state- of-the-art UNIC-ß ex control system, which is based on Wärtsilä?s UNIC (UniÞ ed Controls) platform. The Wärtsilä X40 and Wärtsilä X35 cover the small-bore end of the market. The engines will be used for smaller bulk carriers, product tankers and container feeder vessels. It is a segment where Wärtsilä is making its presence increasingly felt after not having been pres-ent for a number of years.www.wartsila.com Wärtsilä X40 Engine Passes Type Approval Tests Caterpillar to Acquire Berg Propulsion Caterpillar Inc. signed a deÞ nitive agreement to acquire Johan Walter Berg AB, including its core brand of Berg Propulsion, a manufacturer of mechani-cally and electrically driven propulsion systems and marine controls for ships. With the acquisition, Caterpillar will transition from selling only engines and generators to providing complete marine propulsion package systems. Headquartered in Öckerö Islands, Sweden, Berg has designed and manu- factured heavy-duty marine thrusters and controllable pitch propellers since 1929. Its proprietary systems are employed in maritime applications throughout the world that require precise maneuvering and positioning. ?Berg is one of the most highly regard- ed brands in the marine industry,? said Tom Frake, Caterpillar vice president with responsibility for the Marine and Petroleum Power Division. ?Our team will now be able to provide worldwide Caterpillar support to marine operators for a complete, optimized propulsion package, including bow thrusters, gear boxes and shaft alternators.? Berg will become part of the Caterpillar Marine and Petroleum Power Division.The deal is expected to close in the third quarter 2013. MAN Engines to Power Italian Cruise ShipsMAN Diesel & Turbo will supply eight engines for the diesel-electric propulsion of two cruise ship newbuildings to Fin-cantieri Cantieri Navali Italiani S.p.A. It will deliver the engines in cooperation with Alfa Laval who will supply accom- panying exhaust-gas-treatment systems (PureSOx) for sulfur-oxide removal. Each ship will be powered by two MAN 9L32/44CR + 2 × MAN 12V32/44CR engines, providing a combined output of 23,520 kW in a diesel-electric propul- sion arrangement. The engines will op- erate with MAN Diesel & Turbo?s com- mon-rail injection system, suitable for both heavy fuel oil and distillate fuels. ?By combining MAN?s ef Þ ciency-leading 32/44CR engines with the PureSOx exhaust-gas-treatment system, these super-luxury cruise vessels can fulÞ ll the increasingly stringent global requirements for permissible sulfur- oxide emissions in the most economical manner possible,? said Sokrates Tolgos, MAN Diesel & Turbo?s Head of Cruise & Ferry Sales. ?This especially applies to the demanding limit of 0.1% sulfur fuel equivalent in Emission Controlled Areas (ECAs).?The two new vessels are bound for Vi- king Ocean Cruises, sister company of Viking River Cruises. With a total pas- senger capacity of 936 and a crew to passenger ratio of approximately 1:2, the ships are destined to serve the segment demand for small, super-luxury vessels. Delivery of the two newbuildings to the ship owner is scheduled for early 2015 and early 2016, respectively. Alfa Laval?s PureSOx system is de- signed to remove more than 98% of sul-phur oxides from a ship?s exhaust gas through washing it with seawater (open-loop system), or freshwater (closed-loop system), or a combination of both (hy-brid system), which enables the vessels to comply with IMO regulations by us-ing heavy fuel oil instead of expensive, low-sulfur marine gas-oil.Because of the typically stringent space requirements that exist for techni-cal equipment aboard cruise ships, the more compact ?multiple inlet? PureSOx system design has been chosen where the exhaust gas from each engine pair is cleaned in a single PureSOx system.Wärtsilä Launches More Powerful 34DF Engine Wärtsilä has developed its dual fuel technology and introduced a more pow-erful version of its Wärtsilä 34DF en- gine. Available since 2003, the Wärtsilä 34DF is mainly used in the LNG-fueled offshore support vessel market, par- ticularly for tugs, ferries, RoRo, RoPax and workboats. The new and upgraded version of the Wärtsilä 34DF engine in- creases the efÞ 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 2.9-8 MW. In addition to the increase in power, fuel economy is also enhanced, especially when operating in liquid fuel mode. When operating in gas mode, the Wärtsilä 34DF engine is already compli-ant with IMO Tier III regulations with- out any secondary exhaust gas puriÞ ca-tion systems. Also when fueled by gas, the SOx and CO2 emissions are notably reduced, and smokeless operation is at-tained. In liquid fuel oil mode, the Wärt- silä dual-fuel engines are fully compliant 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 efÞ ciently and eco- nomically on low sulphur fuels (<0.1% S), making it suitable for operation in emission-controlled areas. 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