Page 86: of Maritime Reporter Magazine (October 2018)

MARINE PROPULSION TECHNOLOGY tric motors per power train, each shaft, the ZF 8000 can be coupled with 150 kW of electrical output, with an electric drive, enabling ves- will be launched on the market and sels to maneuver with a zero fuel will cover a power range of be- requirements and zero emissions.

tween about 1000 and 2200 kW per ZF is planning to make prototypes power train. As of 2021, MTU will of the ZF 8000 marine transmission then extend its portfolio with the series available in the ? rst quarter addition of hybrid systems based on of 2019.

the power delivered by MTU Series www.zf.com 4000 engines and as many as four electric motors, each with 150 kW New Rolls-Royce of electrical output, and will cover a Podded Propulsion Range power range of between about 1000 Rolls-Royce introduced EL- and 4000 kW per power train. egance, a new podded propulsion www.rolls-royce.com/ system designed to meet market demand for smaller, more compact products-and-services/marine units. The ELegance pods, one with

ZF unveils new ZF 8000 an open propeller, the other ducted,

Transmission series complement and complete the com-

ZF introduced a new marine trans- pany’s portfolio of mechanical and mission series, the ZF 8000 model electric propulsion systems. Per range, for outputs up to a maxi- Nahnfeldt, General Manager Prod- mum of 3000 kW. The new series is uct – Electric Propulsion, Rolls- available in multiple transmission Royce, said: “For many years we ratios, housing sizes and variants have recognized the gap in the pro- to give a high degree of ? exibility pulsion market for smaller pods, for newbuild projects and retro? ts, including ice-class, in the 1.5 MW covering a wide range of vessel to 7 MW power range. These new types from coast guard vessels and pods – based on our Permanent

With its modular design, the new ZF 8000 marine yachts to ferries, supply ships and Magnet technology – complement small tankers. A special feature of our broad product portfolio and sit transmission series gives manufacturers and ? eet op- the new transmission system is that well with our range of frequency erators greater ? exibility in maneuvering their vessels. Shown an additional power intake makes it drives and electrical systems. We here is the ZF 8300 PTI unit. possible to integrate an electric mo- can now provide a complete fully- tor for hybrid functions. electric propulsion package.”

The ZF 8000 series ful? lls the The use of permanent magnet current requirements of internation- (PM) motors in podded propulsion al classi? cation societies and has provides a high motor ef? ciency

Rolls-Royce has been designed with potential future over all speed ranges. Their use also regulations in mind. This advanced results in a pod that optimizes the introduced a new transmission features a high power trade-off between electric, mechan- podded propulsion density, a robust housing and an op- ical and hydrodynamic ef? ciency.

system. The ELegance timized power-to-weight ratio and “The pods feature a ‘twin-tail’ pods, one with an open is designed to meet a wide variety concept to further improve ef? - of customer-speci? c requirements. ciency while signi? cantly reducing propeller, the other

In addition, with its optional sub- cavitation-induced noise and vibra- ducted, complement and complete the company’s portfolio of mechanical and electric propulsion systems.

Photo: Rolls-Royce Marine Photo:ZF Friedrichshaven AG

Photo: ABB 86 Maritime Reporter & Engineering News • OCTOBER 2018

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