MAN Energy Solutions thinks and acts big

Here we tell you about two success stories that show how MAN Energy Solutions acts big. MAN Energy Solutions has announced the successful Type Approval Test (TAT) of its dual-fuel MAN L35/44DF engine for application as auxiliary GenSet and electric propulsion at constant speeds, respectively, of 720 and 750rpm. The TAT involved the testing of both 35/44DF variants, namely the methane-capable 35/44DF CD and the methanol-ready 35/44CD.

L35/44DF CF dual-fule engine

The L35/44DF CD engine is an upgraded version of the L35/44DF CR engine, first launched in 2015. Among other features, it comes equipped with an ACC (Adaptive Combustion Control) system that monitors the state of combustion in real time for optimal fuel-injection conditions. 

Alexander Knafl – Senior Vice President, MAN Energy Solutions – said: “We have worked closely with STX over the past three years in developing the MAN 35/44DF CD. We anticipate it having broad appeal, especially among container vessels and LNG carriers. In addition to its strong output, other advantages of the MAN 35/44DF CD include its effective reduction of methane slip and its future-fuel readiness for methanol and other fuel types.”

The MAN 35/44DF CD dual-fuel engine is based on the proven MAN 35/44DF CR and MAN 32/44CR engines whose performance has been fully verified over the years through millions of operational hours. MAN Energy Solutions reports that the MAN 35/44DF CD features minimal greenhouse-gas emissions and that, compared with industry standards, it can reduce methane slip by up to 85%. 

MAN Energy Solutions and the big, actually the most powerful 2-stroke engine in the world

According to the company, the world’s most powerful two-stroke methanol engine is going to be delivered in June 2025 (READ HERE about a dual-fuel ammonia engine). The engine, an MAN B&W 12G95MEC10.5-LGIM (-Liquid Gas Injection Methanol) type rated at 82,440 kW @ 80rpm, is currently being built by Chinese licensee, CSSC-MES Diesel Co., Ltd. (CMD). The engine is the first of 12 bound for a series of 12 × 24,000 teu container vessels currently under construction: seven at Nantong COSCO KHI Ship Engineering Co., Ltd. (NACKS) for shipowner, Orient Overseas Container Line Ltd. (OOCL); and five at Dalian COSCO KHI Ship Engineering Co., Ltd. (DACKS) for shipowner, COSCO Shipping Lines Co., Ltd. Each engine will also feature MAN Energy Solutions’ proprietary EGRTC (Exhaust Gas Recirculation Turbocharger Cut-out) emissions
system, the largest two-string EGR system on a two-stroke engine to date.

The potential of methanol

Christian Ludwig – Head of Two-Stroke Sales and Promotion – MAN Energy
Solutions, said: “As we move towards a multi-fuel future, interest in methanol has
grown steadily. To date, between newbuild engines and retrofits, we have won
over 230 ME-LGIM references that have accumulated over 600,000 hours running
on methanol alone. With ME-LGIM technology reaching 10 years in the market, it
represents mature, proven technology and reflects MAN Energy Solutions’ ability to
develop attractive technology to enable shipping’s carbon transition. Furthermore,
while methanol produced from renewable sources is an attractive marine-fuel
option due to its low carbon-intensity, an engine using green methanol can even
provide carbon-neutral propulsion – adding to the benefits the ME-LGIM brings to
the table.”