Reliable and efficient four-stroke small-bore engines

Based on the ultra-reliable and robust MAN 28/32H, the dual-fuel version is available as newbuild or retrofit and adds the ability to run on methane, with its economic and environmental advantages. High efficiency in gas and diesel mode makes it a perfect GenSet as part of a complete power package with four-stroke or two-stroke propulsion engines. Easy operation, easy maintenance and proven reliability also make it a trusted propulsion engine with long times between overhauls and low life cycle costs.

• 720 – 750 rpm
• 1,050 – 1,890 kW
• 1,000 – 1,800 kWe

By applying innovative technology to classic design principles, the MAN L23/30H Mk3 is engineered to meet the power needs of most commercial ship types. Straight forward integration requirements make it a perfect choice for low-cost installation, while well-known maintenance procedures and common spare parts reduce operating costs. The new model raises power output per cylinder by 15-20% and reduces fuel oil consumption.

• 720 – 900 rpm
• 500 – 1,800 kW
• 475 – 1,710 kWe

The MAN L23/30DF dual-fuel GenSet lets you select the most economic fuel for the operating condition. The cost optimized fuel injection system is designed for high reliability and cost-efficiency. It uses the main injection valve to inject pilot oil. This way, separate injectors, piping and pumps for main oil and pilot oil or a common rail system are not needed, saving on installation costs and maintenance. The monocoque design also eases the installation of the engine series and reduces weight.

• 720 – 900 rpm
• 625 – 1,320 kW
• 590 – 1,255 kWe

This methanol-fuelled engine is a compact and reliable power source designed to run on methanol, heavy fuel oil (HFO), and most bio-fuel oils. When powered by green methanol, it is carbon neutral. The new engine type maintains the reliability and low consumption of the proven MAN 21/31, ensuring security of power supply on large vessels and handling load steps with confidence.

• 900 – 1,000 rpm
• 1,000 – 1,980 kW
• 950 – 1,880 kWe

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This GenSet operates at the lowest possible accumulated costs during their complete life cycle thus providing a safe investment.

A methanol conversion will be available soon as a retrofit for existing MAN 21/31 GenSets.

• 900 – 1,000 rpm
• 1,000 – 1,980 kW
• 950 - 1,880 kWe

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The robust and reliable MAN L27/38 delivers good performance over the entire load range with quick acceleration and immediate load response. Its proven reliability ensures long time between overhauls (TBO) and no unscheduled maintenance or repair work.

This engine is available as methanol-ready version.

• 750 – 900 rpm
• 2,100 – 3,690 kW

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The MAN L21/31 engine combines intelligent use of fuel in marine applications with flexible propulsion systems. It is the ideal power source, for example, for small to medium-sized tankers, cargo ships and ferries.

The proven engine is characterized by its reliability and low consumption. 

This engine is available as methanol-ready version.

• 1,000 rpm
• 1,290 – 1,935 kW