Building on WinGD’s technology, the new additions - X40DF, X82D and X82DF - will provide a wider variety of compliant choices to the shipowner, the engine manufacturer claimed.
“Our industry is calling for greener-shipping and the success of our low-pressure dual-fuel X-DF portfolio is evidence that shipowners are looking for sustainability and efficiency from their propulsion system. Growing our portfolio of engines ensures that shipowners have the right options to feel confident in their investment.” said Klaus Heim, CEO WinGD
In it’s standard configuration, X40DF is designed to run on LNG, offering the first 2-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 systems.
The X40DF, low-pressure, dual-fuel engine is available in 5 to 8-cylinder configurations, covering a power range from 2,775 kW to 7,480 kW, at 104 to 146 rev/min.
For larger vessels, WinGD’s new X82D engine is dual fuel (DF) ready, with the ability to upgrade to LNG operation, fulfilling requirements for gas-ready notations from class societies.
The cylinder distance has been reduced to 1,440 mm from 1,505 mm, compared to the previous X82B version in the WinGD portfolio. The brake specific fuel consumption (BSFC) has also been reduced depending of the rating point and the tuning variant chosen. The X82D engine offers enhanced propulsion options for VLCCs and other large vessels, the company said.
This engine will be available from 6 to 9-cylinders, covering a power output from 16,560 kW at 58 rev/min to 49,500 kW at 84 rev/min.
Fuel savings amounting to $1,170 per day (2.6 tonnes/day consumption at assumed HFO cost of $450 per tonne) can be achieved for a VLCC operating with an X82D engine at 90% engine power.
Allowing for the same enhanced propulsion options as the X82D for larger vessels, the new X82DF is the latest offering in WinGD’s low-pressure X-DF dual-fuel engine portfolio.
Its dimensions are based on the X82D diesel engine design but follows the Otto-cycle combustion principle in which gas and air are premixed at the correct air-to-fuel ratio.
X82DF has an integrated gas pressure regulation unit (iGPR), replacing the standalone GVU. The 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.
”Providing choices with the technology solutions that our customers need to take them confidently into the future means designing engines that are efficient, reliable, safe and compliant. Combined with our new, advanced engine control system, WiCE, the flexibility and responsiveness of our engines offers the control needed for optimizing a vessel’s efficiency,” said Dominik Schneiter, WinGD’s vice president R&D
“The uncertainty of the IMO’s global suflur cap 2020 caused a dip in newbuild orders early in 2018. 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 shipowners are ready to move forward.”he concluded.