Type approval for another RT-flex engine
Wärtsilä has announced that the RT-flex58T version D ER-3 has successfully passed its Type Approval Test (TAT) at licensee Diesel United (DU) in Japan.
The engine is an optimised version of the Wärtsilä RT-flex58T version D engine, with reduced power and greater fuel economy. The new version has been specifically redesigned to meet the operating demands of Panamax bulk carriers. Passing the TAT milestone verifies the engine as having fulfilled all classification society requirements.
The engine was assembled and tested at DU’s plant in Aioi, Japan. The first engines of this version will be installed in an innovative new Panamax bulk carrier being built at the Japan Marine United (JMU) shipyard for an Italian owner.
The RT-flex58T version D ER-3 engine is a two-stroke, common-rail engine with a high stroke to bore ratio. The reduced bore diameter allows more de-rating without negative effects on operational reliability. The new version offers lower rpm for lower powered vessels and is intended for new economic Panamax bulk carrier designs cutting the consumption compared to standard designs by up to 20%. At 12,210 kW MCR, the six-cylinder RT-flex58T version D ER-3 fits between the power range of the five- and six-cylinder RT-flex58T version D engines while offering an extended rating field, lower absolute speed and lower fuel consumption.
"Firstly, I wish to express special thanks to the staff at Diesel United for their very professional work in preparing this new engine version. Also, thanks are due to the JMU yard. Diesel United and JMU have co-operated closely and delivered substantial input to optimise this engine for meeting specific performance parameters, thereby increasing efficiency and lowering fuel costs," said Martin Wernli, vice president two-stroke, Wärtsilä Ship Power.
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