Engine manufacturer Winterthur Gas & Diesel Ltd. (WinGD) in early June added three new low-speed, two-stroke liquefied natural gas (LNG) powered engines, X40DF, X82D and X82DF, to its portfolio.
“Our industry is calling for greener-shipping and the success of our low-pressure dual-fuel X-DF portfolio is evidence that ship owners are looking for sustainability and efficiency from their propulsion system,” said Klaus Heim, CEO of WinGD.
“Growing our portfolio of engines ensures that ship owners have the right options to feel confident in their investment.”
X40DF Engine for Smaller Vessels
The new X40DF in its standard configuration, is designed to run on LNG, offering the first two-stroke dual-fuel engine for smaller vessels. As the engine is already compliant with all existing emission regulations, including IMO Tier III, the entire support system is reduced due to the absence of the need for any exhaust-gas after-treatment system.
The X40DF, low-pressure, dual-fuel engine is available in 5 to 8 cylinder configuration, covering a power range from 2,775 kW to 7,480 kW, at 104 to 146 rpm.
X82-D Engine for Larger Vessels
For larger vessels WinGD’s new X82-D engine is Dual Fuel (DF) ready, with the ability to upgrade to operation with LNG, meets requirements for gas-ready notations from Classification Societies.
The X82-D engine offers enhanced propulsion options within the VLCC, VLOC and Panamax container vessel segments. The engine will be available from 6 to 9 cylinders, covering a power output from 16,560 kW at 58 rpm to 49,500 kW at 84 rpm.
Fuel savings amounting to 1170 USD/day (2.6 ton/day consumption at assumed HFO cost of 450 USD/ton) can be achieved for a VLCC running and X82-D engine at 90% engine power. This is achieved as a result of an increased firing pressure facilitating the significant fuel savings for vessels using the 7X82-D engine compared with its predecessor engine, the 7X82-B.
X82DF Dual-Fuel Engine
Allowing for the same enhanced propulsion options as the X82-D for larger vessels, the new X82DF is the latest offering in WinGD’s low-pressure X-DF dual-fuel engine portfolio. The engine dimensions are based on that of the X82-D diesel engine design but follows the Otto-cycle combustion principle in which gas and air are premixed at the right air-to-fuel ratio.
The X82DF NOX emissions produced are below that of the IMO Tier-III level in gas mode without complex and costly exhaust gas after-treatment. As a result of the low amount of pilot fuel required (<0.5%) at 75% engine load, low particle and SOx emissions are also achieved.
“The uncertainty of the IMO’s Global Sulphur Cap 2020 caused a dip in new build orders early in 2018,” notes Dominik Schneiter, V.P Research & Development at WinGD.
“However, vessel newbuilding order uptake is once again on the rise and the introduction of these engines further strengthens WinGD’s position in the market.
“As the marine industry’s leading low-speed gas engine developer, WinGD sees evidence that ship owners are ready to move forward.”
Photo credit: WinGD
Published: 10 June, 2019
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