Schiffstechnik | Ship Technology METALLERSATZ Bieglo sieht großes Potenzial für Hochleistungskunststoffe Das Hamburger Unternehmen Bieglo GmbH will sein Engagement in der maritimen Industrie ausbauen und setzt dabei auf Hochleistungskunststoffe als Metallersatz. Materialien wie PEEK (Polyetheretherketon) und PI (Polyimide) bieten außergewöhnliche Eigenschaften, sie seien extrem beständig gegenüber Hitze und Chemikalien, korrosionsbeständig, selbstschmierend und mechanisch stabil, so die Kunststoff-Experten. Hinzu kommen die bekannten vielseitigen Verarbeitungsmöglichkeiten von Thermoplasten. Weiter heißt es aus dem Unternehmen: »Ob in der Automobilindustrie, der Luftfahrt oder der Schifffahrt: Transportmittel und vor allem deren Antriebsstrang werden komplexer, leichter und effzienter. Durch den Einsatz von Hochleistungskunststoffen wie PEEK und PI wird diese Entwicklung gefördert und beschleunigt«. Durch geringes Gewicht in bewegten Teilen und die Mischung mit Additiven (Compoundierung) bieten Hochleistungskunststoffe viele Vorteile, die neue VIRIDES Entwicklungen auch im Inneren von Motoren oder in elektronischen Bauteilen ermöglichen. Hochleistungskunststoffe sind per Definition teuer. Längere Wartungsintervalle oder das Wegfallen von Fettschmierung senken jedoch die Betriebskosten erheblich und steigern die Leistungsfähigkeit und Zuverlässigkeit ganzer Baugruppen. New generation torque meter offers SFOC calculation The new VDTM (Virides Dynamic Torque Meter) is a shaft power meter of the latest generation. According to the maker it offers a very high sampling frequency of 1 kHz and permanent calculation of the average value for the highest accuracy. Features also include the possibility to connect three mass-flowor volume-flow meters as well as three temperature feelers (PT100). Other characteristics are a potential zero signal in- and output, a fuel totalisator and permanent data storage for three channels (HFO, LSFO, MGO) and permanent display of the specific fuel oil consumption (SFOC in g/kWh). The VDTM offers contactless energy transfer and data transfer by Bluetooth technology. No extra monitors are needed in the ECR, instead, the software can be displayed on all computers that are part of the ship’s LAN. Virides says, the system is fully independent from influences of the sea to the hull. For use as an engine controller it Die positiven Eigenschaften bewähren sich in Anwendungen wie Dichtungen und Gleitlagern, aber auch als funktionale Gehäuseteile oder Stecker. Je nach Verarbeitung eignen sich Granulate, Pulver oder Halbzeuge als Ausgangsmaterial und können je nach Anwendung naturbelassen, faserverstärkt oder mit tribologischen Additiven versehen werden. M is also available as a redundancy type. It provides several output signals for other systems. The VDTM shaft power meter will be supplied ready preadjusted for simple installation on board. It is available in different types for a measuring distance on the shaft 250 mm or 500 mm and for shaft diameters up to 1,100 mm. Virides Solutions is known by the take over of the fuel treatment products of the old LEMAG Lehmann & Michels. M Quelle: Virides Quelle: Bieglo 62 HANSA International Maritime Journal – 154. Jahrgang – 2017 – Nr. 10
Schiffstechnik | Ship Technology MAN reveals new flagship engine The successor to the 48/60CR engine continues features, such as a common-rail system with Ecomap capability, and adds new technologies, such as two-stage turbocharging MAN Diesel & Turbo states that the 45/60CR’s power increase and low consumption are particularly aimed at such key, lifecycle-cost-oriented applications as cruise liners, RoPax ferries, RoRo vessels, and dredgers. The company is making the 45/60CR engine available first as 12 V and 14 V versions with 6 L to 10 L variants to follow later. The engine has been conceived from the beginning as a family concept that will accommodate future derivatives (e.g. dual-fuel). Gunnar Stiesch, Head of Engineering Engines at MAN Diesel & Turbo, says: »Next to a frontloading approach, using thermodynamic engine process calculations, we used computational fluid dynamics to simulate and optimize the combustion process. Also, finite elements analysis was used to optimize the engine’s mechanical strength and vibration behavior. We then put the power unit to the test on the world’s largest, four-stroke, single-cylinder test engine and started the experimental optimization and validation phase.« The two-stage turbocharger module rounds off the 45/60CR’s profile. »Despite the turbocharging being two-stage, load pick-up behaviour is the same as for the single-stage turbocharged 48/60CR engine. Operators thus profit from maximized peak pressure and optimal utilization of the Miller Cycle«, explains Stiesch. The V45/60CR enables owners and operators to meet demands of more stringent emissions regulations, while simultaneously optimizing operating expenses with low levels of fuel-consumption. Through increasing standardization and using modular sub-components, it also allows faster installation and easier maintenance, MAN says. The new four-stroke unit meets IMO Tier II, while IMO Tier III is met with MAN’s in-house, compact SCR system; it is shortly scheduled for approval by all major classification societies. According to MAN the 45/60CR is suitable for use in a wide range of marine applications, especially applications with high power-demands like modern cruise vessels, large RoPax and RoRo ferries, as well as mega-dredgers. Calculations, based on a representative load-profile of a cruise vessel, show that a ship operating with an 45/60CR engine can enjoy a fueloil cost benefit of 5 to 12% in comparison with a vessel powered by an equivalent engine from other manufacturers. For a cruise vessel of around 120,000-150,000 gt with 60-65 MW of installed power and an assumed fuel price of 500 €/t, this translates into annual savings of 0.9 to 2.4 mill. € when employing the 45/60CR. The engine combines the characteristics of its predecessor (48/60CR) – including its in-house common-rail injection system, with the latest innovations in diesel-engine technology such as twostage turbocharging. The V45/60CR can also be combined with the ECOMAP 2.0 technology that grants operators the flexibility to run an engine following different SFOC power characteristics, facilitating optimal effciency at different load points. The latest development is the integration of the SCR system into ECOMAP, offering even further possibilities to optimize the effciency of the propulsion system, taking into account fuel and urea prices. The 45/60CR will initially be available as 12 V and 14 V versions with power outputs of 15,600 and 18,200 kW respectively, with inline versions following at a later stage. The first set of V-type engines will be available from end-2020 with delivery of the first L-type engines due from 2022. M Virides Solution 1/3 hoch in bestmögl. HANSA International Maritime Journal – 154. Jahrgang – 2017 – Nr. 10 63
