First dual-fuel 11G90ME-GI runs on 100% gas on way to successful shop test
Published by David Rowlands,
Editor
LNG Industry,
MAN Energy Solutions reports that, during the testing, the engine successfully ran at 100% load in gas mode.
The six units are MAN B&W 11G90ME-GI dual-fuel configurations operating on LNG, with delivery dates scheduled between 2020 and 2022. According to the statement, Hyundai Samho Heavy Industries (HSHI) will construct each of the neo-Panamax boxships.
Capt. Anil Singh, Chief Operating Officer at Eastern Pacific Shipping, said: “EPS is proud to be working alongside MAN by installing their ME-GI engines in our LNG dual-fuel ultra-large containerships. Instead of taking a wait-and-see approach towards decarbonisation and environmental protection, EPS decided to use LNG as a marine fuel and chose to install the two-stroke ME-GI engine in these newbuilds. When powered by LNG, the ME-GI will reduce these vessels’ carbon footprint by significantly lowering CO2, NOx, and SOx emissions. The success of the shop test reinforces our decision, and we look forward to the addition of this environmentally-friendly tonnage to our diverse fleet.”
Furthermore, the shop test also marked the debut of MAN Energy Solutions’ new Pilot Booster Injection Valve (PBIV). This valve employs smaller or larger atomising holes, depending on fuel mode, to inject fuel into engines. As such, in gas mode, the use of smaller holes reduces pilot-oil consumption to just 1.5%. This is approximately half of what was previously required; diesel mode employs the larger-sized holes.
The PBIV valves represent MAN Energy Solutions’ latest pilot-injection technology, which caters for dual-fuel running by optimising specific pilot oil consumption (SPOC).
Bjarne Foldager, Senior Vice President, Head of Two-Stroke Business at MAN Energy Solutions, said: “This shop test is notable for a number of reasons. Again, the ME-GI has shown what mature technology it is, running stably at 100% load in gas mode, while the introduction of our PBIV technology drastically cuts pilot-oil consumption by half compared to previous. The test also showed that the ME-GI capably handles load changes and maintains an impeccable cylinder condition. As such, the ME-GI has set the bar even higher for dual-fuel propulsion and is the de facto industry standard.”
Read the article online at: https://www.lngindustry.com/small-scale-lng/28012020/first-dual-fuel-11g90me-gi-runs-on-100-gas-on-way-to-successful-shop-test/
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