Everllence small-bore portfolio
Everllence (former MAN Energy Solutions) has built its position as the leading designer and developer of small-bore engines for the world’s merchant marine fleet on the basis of high reliability and efficiency.
Thanks to the low maintenance requirements, our engines provide extended lifetime, and additionally offer long time between overhauls (TBO). When needed, our service experts are there for you – every day and everywhere around the world.
Combined with compatibility across a growing range of fuel options, including biofuels, methane and methanol, and with dedicated solutions such as the L21/31DF-Me expanding the portfolio's fuel flexibility to include ethanol, our small-bore engines provide the flexibility needed to meet evolving regulatory and decarbonization requirements.
For the world's merchant fleet
Our portfolio of proven and trusted four-stroke small-bore GenSets and engines is suitable for many different kinds of merchant vessels, and also specific applications, such as wind offshore. This makes it a perfect choice for power generation, electric propulsion and propulsion.
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High efficiency
Efficient performance has a measurable effect on both the environment and your bottom line. It also explains why more than 20,000 of our engines are in service worldwide. Our dual-fuel engines let you select the most economic fuel type for the operating conditions. The cost-optimized fuel injection system is also designed for high reliability and cost efficiency.
Key benefits of the small-bore engines
Our small-bore GenSets and propulsion engines are based on proven technology, and offer a wide range of benefits:
- Designed for lifelong operational reliability, availability, and minimal downtime
- Robust design with sturdy engine blocks, stiff crankshafts, and robust connecting rods
- Long overhaul intervals
These key features make all engines of this portfolio a good choice for shipowners or operators focusing on reliable performance and efficiency.
Talk to our experts
Plan your vessel with confidence
Get in touch with our four-stroke small-bore experts for in-depth advice on all your propulsion and GenSet questions. Start your change process now and reach out to us today.
Future-proof solutions
The main uncertainties affecting engine choice have to do with the environmental and cost factors of fuel. Our answer is flexibility. Our single-fuel engines can run on conventional fuel types and also biofuel oils. Our dual-fuel engines, on the other hand, offers additional flexibility by enabling the use of methane, methanol, or ethanol as second fuel type, further broadening the range of fuel options available.
Our retrofitting expertise offers flexibility, now and in the future.
Frequently asked questions regarding the Everllence small-bore engines
What else is there to know about these engines?
Core questions on performance, fuel, and emissions answered.
The small-bore portfolio also includes a range of trusted and proven propulsion engines for smaller applications, such as tugs and fishing vessels.
The small-bore portfolio also comprises dual-fuel engines, which can run either with methane or methanol. Additionally, many of the engines can be upgraded to dual-fuel operation.
Beyond these alternative fuel options, the engines are already capable of operating on biofuel oils. Everllence is also advancing solutions for additional future fuels such as ethanol, enabling shipowners to remain flexible as fuel markets and regulations evolve.
Discover the full range of Everllence four-stroke small-bore engines
GenSets
The dual fuel L28/32DF (former MAN L28/32DF) is available for new builds and economical retrofit solutions. The dual fuel engines offer flexibility with economic and environmental advantages, especially as part of a complete power package.
- 720 – 750 rpm
- 1,050 – 1,890 kW
- 1,000 – 1,800 kWe
The L27/38DF-M (former MAN L27/38DF-M) GenSet is designed for running on methanol, heavy fuel oil (HFO), and most biofuel oils. It delivers exceptional performance across the entire load range, featuring quick acceleration and immediate load response. Long time between overhauls (TBO) are also valid for the L27/38DF-M.
- 720 – 900 rpm
- 1,980 – 3,690 kW
- 1,900 – 3,540 kWe
L27/38 Mk2 (former MAN L27/38 Mk2) GenSets are designed for operational reliability together with long and safe overhaul intervals. They are a proven solution for a large range of merchant vessels.
- 720 – 900 rpm
- 1,980 – 3,690 kW
- 1,900 – 3,540 kWe
The Mk3 version of the L23/30H (former MAN L23/30H) GenSet combines innovative technology with proven design principles to meet current and future requirements. With up to 200 kW per cylinder, it is engineered to cater for the power needs of most commercial ship types.
- 720 – 900 rpm
- 500 – 1,800 kW
- 475 – 1,710 kWe
The dual fuel L23/30DF (former MAN L23/30DF) is available for new buildings as well as for an economical retrofit solution. The dual fuel engines offer flexibility with economic and environmental advantages, especially as part of a complete power package.
- 720 – 900 rpm
- 625 – 1,320 kW
- 590 – 1,255 kWe
This methanol-fuelled L21/31 (former MAN L21/31) GenSet is a compact and reliable power source designed to run on methanol, heavy fuel oil (HFO), and most biofuels.
With its outstanding load-step capabilities and extremely long time between overhauls (TBOs), it is ideal for many different applications. It is also a perfect match for the Everllence B&W ME-LGIM (former MAN B&W ME-LGIM) methanol two-stroke engine.
- 900 – 1,000 rpm
- 1,000 – 1,980 kW
- 950 – 1,880 kWe
L21/31 Mk2 (former MAN L21/31 Mk2) GenSets deliver reliable and HFO- / biofuel-based auxiliary power. They operate at the lowest possible accumulated costs during their entire life cycle and therefore represent a safe investment.
- 900 – 1,000 rpm
- 1,000 – 1,980 kW
- 950 - 1,880 kWe
Propulsion engines
The L27/38 (former MAN L27/38) propulsion engine, with its output range of 2,100 to 3,690 kW, is the perfect power solution for many different kinds of marine vessels.
These include not only small to medium-sized tankers, cargo vessels, ferries, passenger and RO-RO ships, coasters, large fishing boats but also tugs, workboats, and supply vessels.
- 750 – 900 rpm
- 2,100 – 3,690 kW
The L21/31 engine is the ideal power source in the 1,290 – 1,935 kW output range for small to medium sized tankers, cargo vessels, ferries, RO-RO vessels, fishing vessels, tugs, workboats, and supply vessels.
- 1,000 rpm
- 1,290 – 1,935 kW
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Advancing small bore GenSets and propulsion
Sign up to join our expert colleagues, as they share fresh insights from the research and development processes for introducing ethanol and ammonia engines to the portfolio.
Discover our methanol-fuelled small-bore engines: L21/31DF-M and L27/38DF-M.
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Related News
Complete Everllence Propulsion Package Set for Newbuild Container Series
An undisclosed Asian shipbuilder has ordered Everllence propulsion packages in connection with the building of 5 × 8,400 teu container ships. The vessels and engines will be constructed in China.
The scope of supply for each vessel covers:
- an Everllence B&W 6G80ME-GI Mk 10.5 main engine featuring proprietary EGRTC (Exhaust Gas Recirculation Turbocharger Cut-out);
- 4 × 9L28/32DF LPSCR (Low-Pressure Selective Catalytic Reduction) auxiliary engines;
- a PVU8000 (Pump Vaporizer Unit) main-engine fuel gas-supply system;
- a set of TCA77 & TCT30 main-engine turbocharger;
- two ETB40 EGR (Exhaust Gas Recirculation) blower;
- a TCR turbocharger for each auxiliary engine.
Bjarne Foldager – Head of Two-Stroke Business – Everllence, said: “Our ambition has always been to be a world-class provider of complete propulsion packages and this notable project is a perfect showcase of the comprehensive solutions we can provide to the market – in this instance for a modern container-ship series.”
Foldager continued: “In particular, the ME-GI has had a strong start to the year, confirming its status as the default, dual-fuel, methane-fuelled engine. Part of this is due to the current, hot, container-newbuilding market where the ME-GI engine stands out – among other ways – by virtue of its having the lowest methane emissions in its class. Another ME-GI advantage is LNG’s status as an excellent transition fuel for decarbonisation and its mature supply chain. Furthermore, as increased quantities of bio- and synthetic LNG become available at commercially viable prices, the ME-GI engine will ultimately allow shipowners to reach net-zero.”
Christian Ludwig – Head of Two-Stroke Sales and Promotion – Everllence, said: “With its best gas-consumption figures and an attractive pilot-oil consumption, the ME-GI’s installed engine-output power base of over 25 million kW makes it the proven leader in the dual-fuel, two-stroke market. Available from 35- to 95-bore, the ME-GI covers most propulsion needs – even passenger ferries – and it is often accompanied by an order for our PVU.”
Michael Petersen – Senior Vice President, Head of PrimeServ Denmark at Everllence – said: “The unique selling point for our PVU is its perfect match with Everllence B&W ME-GI/ME-GIE engines with full integration into the main-engine control systems. This delivers first-class performance and efficiency as evidenced by market-leading times-between-overhauls. Notably, our PVU is furthermore prepared for recondensing for an optimised boil-off gas process.”
Dr Daniel Struckmeier, Head of Sales & Licence Turbochargers & EGT APAC, Everllence, said: “We are very proud that our full range of turbo solutions is being applied in this memorable project. That the turbocharger units for the main engines and for the auxiliary engines, as well as the ETB blower for the EGR systems all originate from Everllence will uniquely optimise engine performance.”
Everllence reports that the ME-GI engine has reached broad acceptance in the market since its introduction in 2014. Earlier this year, it rounded 1,000 cumulative sales with over 400 of these coming from the container segment alone.