MAN Unveils New Dual-Fuel Superyacht Engine

MAN Energy Solutions has announced its intention to release a dual-fuel version of its MAN 175D high-speed engine that will be capable of running on methanol by the end of 2026. This new variant, known as the MAN 175DF-M, will be available for both new-build and retrofit options.

According to MAN Energy Solutions, the 175DF-M is specifically designed for diesel-mechanical and diesel-electric propulsion in order to maximize the usage and efficiency of methanol for various applications and load profiles. The engine has already obtained the ‘fuel ready’ certification from DNV, thus paving the way for the integration of this dual-fuel methanol technology.

Florian Keiler, Head of High Speed at MAN Energy Solutions, has emphasized the competitiveness of the MAN 175D in terms of sustainability and efficiency, highlighting its low fuel and lube-oil consumption, as well as extended overhaul times. Keiler also stressed the importance of transitioning to methanol combustion as a logical step in the evolution of future fuels.

The 175D engine represents the most recent addition to MAN Energy Solutions’ high-speed maritime sector and plays a crucial role in the company’s efforts to develop a methanol-ready engine portfolio in response to the increasing demand for such technology.

Drawing from the success of its two-stroke engines, MAN Energy Solutions has utilized its expertise to create an optimized solution for its four-stroke engines, including successful single-cylinder testing. These endeavors will support the development and validation of the dual-fuel PFI (Port Fuel Injection) technology for its methanol-ready 175D engine.

Keiler has explained that following extensive consultations with customers, the decision to utilize PFI combustion technology was based on key requirements such as the dual-fuel principle, reliability, efficiency, high methanol share, and competitive life-cycle costs. Fundamental combustion development is set to commence in 2024, leading up to the first field test of the methanol engine in 2026, with the MAN 175DF-M engine scheduled for sales release by the end of that year.

MAN Energy Solutions believes that PFI represents the most advanced technology currently available, targeting a high methanol share over a wide power range while achieving the highest cylinder output in its high-speed engine class. The optimization for diesel-electric multi-engine plants will allow the engines to operate at an optimal load point, resulting in the highest methanol share. Additionally, when using biofuels, the carbon footprint of the MAN 175DF-M will be reduced to zero while maintaining full fuel flexibility for global operation.

In conclusion, MAN Energy Solutions is offering access to the superyacht industry’s most comprehensive archive of business-critical information and a real-time superyacht fleet database for a monthly fee. The company aims to foster industry accessibility and long-term prosperity through its mission of unifying the industry.

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