NEW PRODUCTS Wärtsilä hybrid power
Global technology group Wärtsilä has introduced what it claims to be the marine sector’s first hybrid power module of its type, which aims to set a new industry benchmark for marine hybrid propulsion.
The Wärtsilä HY is a fully integrated hybrid power module combining engines, an energy storage system and power electronics optimised to work together through a newly developed energy management system (EMS).
Wärtsilä said there is a notable trend in the marine sector towards hybrid propulsion solutions, which are anticipated to represent a significant percentage of all contracted ships within the coming ten years.
The new EMS represents the latest generation integrated control system and has been specifically designed for this application. It brings all the ship’s onboard systems together in order to provide increased operational efficiency and flexibility, resulting in lower fuel consumption, reduced emissions and improved vessel performance.
Largest ever dual prop from Suzuki
Suzuki Marine has launched its newest model, the DF350A. At 350 horsepower, this dual-prop V6 4-stroke is the largest, most powerful outboard Suzuki has built to date. In development for more than three years, it represents a significant milestone in both engineering and design for the Japanese outboard motor manufacturer.
“We have put a lot of work into this new outboard and we cannot wait to see how the market responds. We have watched with great interest as boats have gotten bigger, especially the centre console market,” said Yasuharu Osawa, Executive General Manager, Global Marine & Power Products Operation, Suzuki Motor Corporation. “Not only that, but we’ve seen an increasing preference for outboards on all kinds of boats that used to be exclusively stern drive or inboard. The time is ripe for this new outboard.”
Suzuki engineers achieved 350 horsepower while still designing a compact, lightweight powerhead. The engine displacement of 4.4 litres is matched by a high-performance 12.0:1 compression ratio, which Suzuki claims is the highest ever for a production outboard engine. A unique combination of cool air intake, dual fuel injectors and a strengthening of the pistons has virtually eliminated engine knock, a typical by-product of high compression engines.
New Scania marine engine reduces emissions by up to 90%
Swedish engine manufacturer Scania has launched its 13-litre DI13M IMO Tier III compliant marine engine, which is capable of running entirely on hydrotreated vegetable oil (HVO) fuel resulting in emissions of carbon dioxide being reduced by up to 90%. Additionally, IMO Tier III requires emissions of nitrogen oxides (NOx) to be cut by more than 70%.
The DI13M range utilises selective catalytic reduction (SCR) to help achieve its low emissions. The technology is developed by Scania in-house and ensures minimum emissions of NOx. AdBlue, a urea-based solution, is injected into the exhaust system to convert toxic nitrogen oxides into water and harmless nitrogen gas. The engine is available in a selection of power output steps from 257kW (350hp) to 405kW (550hp).
“When used for propulsion, the engine continues our industry-leading tradition of delivering optimum fuel efficiency without compromising performance,” said David Bamber, general manager, Scania Engines.
76 | The Report • September 2017 • Issue 81
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