MAN Diesel & Turbo has announced that its G50 engine has successfully passed the type approval test at Mitsui in Japan.
The engine, after being rendered operational will be incorporated into the first of the three ethane-fuelled eco-friendly liquefied ethane gas (LEG) carriers being constructed in China.
Construction of the new LEG carriers is being carried out by SinoPacific Shipyard for the German shipowner Hartmann Reederei.
The ME-GI engine is designed to be powered by a range of fuels like ethane, heavy fuel oil (HFO), marine diesel oil (MDO) and gas oil.
It will be fitted with a MAN Kappel propeller with rudder-bulb system to enhance its propulsion efficiency.
Compared to its predecessor, the G50 engine has a lower weight and shorter length but retains the same power generation and is claimed to result lower production expenditure.
Its design features the diesel combustion principle to eradicate formaldehyde emissions while resulting in almost a negligible unburnt gas slip hence minimising greenhouse gas emissions.
The testing was conducted under the supervision of DNV-GL classification society, where the engine was tried on an ME-C type powered by marine gas oil (MGO) as well as had undergone a pressure and function test while being powered by its gas system.
The first operational test of the engine on ethane gas aboard the new vessel is scheduled to take place following the bunkering of the vessel in Texas with ethane.
Following the tests, the engine will be officially tagged as 7G50ME-GIE (Gas Injection Ethane) type.
Described as the world’s first ethane-fuelled eco-friendly LEG carrier, the 36,000m³ vessel has its superstructures positioned at the bow, allowing an equal spreading of weight and a subsequent reduction of the necessity for ballast water, facilitating reduced fuel consumption and emissions.
Last month, JHW, a JACCAR / Hartmann Reederei joint venture has ordered five 85,000m³ ethane carriers (VLECs) for United Ethane Carriers, each of which will be fitted with a single unit of MAN B&W 6G60ME-GI main engine.
The latest order is reported to have augmented MAN Diesel & Turbo’s ethane-burning ME-GIE engines order to eight, while the company reports of more in the pipeline.
Image: An artist’s depiction of the ethane carriers to be propelled by G50 engine. Photo: courtesy of MAN SE.