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MAN ME-GA-opti optimizes combustion through individual cylinder control

The first LNG carrier in a series currently under construction by Samsung Heavy Industries (SHI) in Korea has completed gas trials. Originally ordered in Q2 2021 and scheduled for delivery in July 2023, the ship is powered by MAN B&W ME-GA dual-fuel engines capable of running on fuel oil and LNG, and comes with Exhaust Gas Recirculation (EGR) for emission reduction. (Earlier post.)

MAN Energy Solutions furthermore reports that—as a first—the engine-control system offers a new control feature called ME-GA opti for optimal engine operation through individual cylinder control.

MAN Energy Solutions has always played a leading role in developing groundbreaking technologies that add value to our customers’ operations. Thus we have made EGR standard for the ME-GA, thereby reducing methane slip compared to first-generation Otto-cycle engines without EGR, which simultaneously improves fuel efficiency in both gas and fuel-oil operation. ME-GA-opti continues this trend and will further boost the ME-GA’s reputation.

—Bjarne Foldager, Senior Vice President and Head of Two-Stroke Business, MAN Energy Solutions

ME-GA-opti’s intelligent functionality benefits engine performance in several ways, including by:

  • ensuring optimised conditions for the combustion process by reducing the influences of ambient temperature, pressure and humidity that can influence Otto-cycle engines;

  • enabling maximum and stable gas potential for the engine; and

  • reducing fuel-ratio control activation—MEGA-opti is able to adapt the engine’s running conditions as the combustion moves towards the pre-ignition limit.

Based on the well-proven MAN B&W dual-fuel design with minimal installation requirements, the MAN B&W ME-GA uses an efficient ignition concept and unique gas-admission system that delivers safe and reliable operation.

The ME-GA furthermore features minimal operational costs, simple supply and purging concepts, and low maintenance costs for its fuel-gas supply system. It joins the well-established ME-GI Diesel-cycle engine in MAN Energy Solutions’ two-stroke-engine portfolio, which now offers both low- and high-pressure, dual-fuel solutions for operation on LNG.


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