WinGD’s new liquid and dual-fuel engines are suited to vessels with shallow draughts, small propeller diameters and low main deck heights
The four new engines, which have been developed with economic engine speeds and space constraints in mind, are the liquid-fuel X52-S2.0 and X62-S2.0 and their dual-fuel counterparts X52DF-S1.0 and X62DF-S1.0.
All four engines feature a short piston stroke well-suited for vessels with a shallow draught, small propeller diameter or low main deck height, such as container feeders, roro and ropax vessels, multipurpose cargo vessels and vehicle carriers.
WinGD global director of sales Volkmar Galke says "Many of these vessel types are part of an ageing fleet that means we expect significant fleet renewal – and a big opportunity for our new engines – over the next few years."
“We’re trying to have a product to fit into these smaller vessels – the market needs this”
The new liquid fuel engines in the range will be fitted, as standard, with an integrated selective catalytic reduction system, which enables them to meet IMO Tier III NOx limits. The integrated selective catalytic reduction (iSCR) system is a key element of the new engine lines and will be rolled out on the diesel engines. The iSCR is esigned to be compact and robust, this simplifies installation and enables a more compact arrangement in the engine room, and reduces costs associated with installation of a separate SCR system. Testing of the engine and SCR can be carried out simultaneously with this arrangement, and the SCR system will be integrated into the engine control system.
The X62-S2.0 engine has a cylinder bore diameter of 620 mm and a piston stroke of 2,245 mm – compared to a stroke of 2,658 mm on the standard X62 – with a maximum continuous power of 2,685 kW/cylinder at 108 rpm. The engine will be available with five to eight cylinders, covering an overall power range of 7,600-21,480 kW at 85-108 rpm. The X62DF-S1.0 engine has similar dimensions and a maximum continuous power of 2,110 kW/cylinder, for an overall power range of 6,925-16,880 kW.
The X52-S2.0 engine has a cylinder bore diameter of 520 mm and a piston stroke of 2,045 mm, with a maximum continuous power of 1,910 kW/cylinder at 120 rpm. The engine will be available with five to eight cylinders, covering an overall power range of 5,425-15,280 kW at 95-120 rpm. The X52DF-S1.0 engine has a maximum continuous power of 1,500 kW/cylinder and covers an overall power range of 4,950-12,000 kW.
The first of the new engines, a six-cylinder version of the X62-S2.0 engine, will be tested at the end of 2021 and the first X52-S2.0 engine will follow in 2022. The new engines are intended to replace the RTA/T-flex 58 and RT-flex50 models, which are approaching the end of their lifespan.
WinGD’s X52 and X62 long-stroke engines will also remain in the portfolio for vessels with lower shaft-speed requirements.