Mid-bore Wärtsilä engine passes tests

14 Jan 2014
The first Wärtsilä X72 engine at the Doosan factory

The first Wärtsilä X72 engine at the Doosan factory

Wärtsilä reports that the first example of its X72 mid-bore, low-speed engine has successfully passed the factory acceptance test.

The company says that this verifies that the engine fulfils the design criteria and has been accepted by the customer and Lloyd's Register of Shipping. The tests were carried out at licensee Doosan Engine in South Korea.

The X72 is part of the Generation X engine series, launched in May 2011. Wärtsilä claims that the X72 engine offers high efficiency and low fuel consumption performance to provide a favourable EEDI figure, and consequently it produces reduced emissions of CO2 and NOx. It achieves this through use of common-rail fuel system technology, with flexible fuel injection and exhaust valve operation. Wärtsilä claims that the  design, optimised for lower revolutions, offers stable running down to 12% of normal speed, smokeless operation and extended component life.

An extended rating field makes the X72 suitable for a range of ship types, including Capesize bulk carriers, Suezmax tankers, and Feeder/Panamax container ships.

"This is another important milestone for us since this is the first ever Wärtsilä X72 engine to roll off the production line. The fact that it has successfully fulfilled the factory acceptance test requirements means that in every respect it meets our expectations, as well as the expectations of our customers.. We are now moving with great confidence to the full commercialization of this outstanding engine," said Martin Wernli, MD of Wärtsilä Switzerland and vice-president, Wärtsilä Ship Power, two-stroke.

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