Japanese diesel engine manufacturer Yanmar has received an order from Mitsui OSK Lines (MOL) to supply dual-fuel 8EY26LDF engines to power generators on board Japan’s first two LNG-fuelled ferries
The eight-cylinder engines’ power is rated at 1,730 kW with a generator capacity of 1,600 kWe. With a cylinder bore/stroke ratio of 260×385 mm, the LNG and marine diesel oil (MDO) engine displacement is 163.5 L and speed is 720 RPM.
With features such as load fluctuation tracking, acceleration performance, and high thermal efficiency, in addition to air-fuel ratio control technology, Yanmar said its 8EY26LDF engines "always maintain optimum combustion, enabling them to deliver stable, highly reliable operation".
The Yanmar engines are destined for the provisionally-named Sunflower Kurenai and Sunflower Murasaki ferries, which will be built at Mitsubishi Shipbuilding’s Shimonoseki Shipyard.
Ferry Sunflower – an MOL group company – will charter the ferries after delivery and launch them on its Osaka-Beppu route from the end of 2022 and the first half of 2023, respectively, as replacements for vessels currently in service.
As emissions regulations in the marine sector become more stringent, LNG vessels are being adopted globally as a means of reducing environmental impact, Yanmar said, and dual-fuel engines with their ability to run on both diesel and LNG have attracted more attention.
The company added that it will continue working towards reducing its environmental impact and developing clean marine powertrains. Yanmar has also announced the establishment of a Middle East branch, located in Dubai, United Arab Emirates, and has expanded its presence in Europe after signing an agreement with the Danish independent service provider VMS Group as a new service agent for commercial marine engines and spare parts.
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