ClassNK granted type approval to the new 28AHX-DF dual-fuel engine built by Niigata Power Systems Co., Ltd., a press release said.
While the adoption of emerging maritime technologies can prove challenging due in part to the time required to gain approval, ClassNK’s streamlined approval process has allowed it to complete the design approval, trial operational testing, and the overhaul inspection of the 28AHX-DF in just a couple of months before granting type approval on Dec. 24, 2014.
Operating on both diesel fuel and LNG, the engine will not only help mitigate environmental loads but will also assist shipowners and operators in meeting the stringent IMO Tier III NOx regulations in Emissions Control Areas, which are set to go into effect on or after Jan. 1, 2016, by reducing NOx emissions by more than 75% from the current Tier II regulations.
The engine has a maximum rated power per cylinder of 320 kW, a cylinder bore of 280 mm and a 390-mm stroke.
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