A powerful portfolio: MAN B&W two-stroke propulsion engines
Full range of MAN B&W two-stroke propulsion engines
Discover the potential and variety of our two-stroke engines.
High power combined with high efficiency: Our two-stroke engines
MAN B&W ME-C
More compact than others, our ME-C engines with electronic controls serve up a host of advantages. You can look forward to superior performance parameters, fully integrated electronic control as well as the necessary fuel injection pressure and rate shaping at any load. Plus the ME-C engine can be retrofitted for alternative fuels such as methanol, LPG, LNG or ethane.
- Engine speed: rpm to 56 – 167
- Output: 4,350 – 82,440 kW at L1
MAN B&W ME-GI
The ME-GI engine impresses with low operating costs and the highest thermal efficiency on the market. Because of its negligible methane slip, low GHG, and reduced CO2 emissions, it is the most environmentally friendly technology available. By the optional use of fuel oil or LNG, it represents a highly efficient, flexible, propulsion-plant solution.
- Engine speed: rpm to 56 – 167
- Output: 4,350 – 82,440 kW at L1
MAN B&W ME-GIE
The technology of the ME-GIE is based on our successful ME-GI engine. This engine can be operated with ethane as well as LNG – which makes it a good choice and especially lucrative for Ethane carriers. This engine offers very competitive fuel oil and gas consumption, plus operational stability and efficiency due to the diesel principle.
- Engine speed: 62 – 127 rpm
- Output: 8,300 – 29,120 kW at L1
MAN B&W ME-GA
The ME-GA engine is the latest addition to our dual fuel portfolio. Methane is admitted during the compression stroke, which allows for a lower supply pressure compared to other dual fuel engines. This is especially advantageous for vessels with large amounts of boil-off gas, like LNG carriers. The ME-GA engine is Tier III compliant in gas mode, and offers minimal installation and operating costs.
- Engine speed: rpm to 66 – 91
- Output: 10,400 – 16,980 kW at L1
MAN B&W ME-LGIM
Our ME-LGIM is a dual fuel engine which is characterized by its high efficiency. One of the advantages: It runs on methanol – the cost-effective and innovative marine fuel of today and tomorrow. Why? It’s biodegradable and burns clean, it is reasonable to modify storage and infrastructure, and it significantly reduces SOx, NOx, CO2 and particulate matter.
- Engine speed: 79 – 117 rpm
- Output: 8,600 – 16,020 kW at L1
MAN B&W ME-LGIP
Our ME-LGIP is the only dual-fuel engine on the market that lets you switch between HFO, MGO and LPG fuels without any loss of power or efficiency. It also ensures long-term reliability - with very minimal maintenance requirements. The low operational costs as well as the simple retrofit solution are particularly convincing.
- Engine speed: 62 - 167 rpm
- Output: 4,350 – 29,120 kW at L1
Always an optimal choice
The MAN Energy Solutions two-stroke portfolio delivers the highest performance and efficiency across all engine types.
MAN B&W two-stroke engines from the 30 to 95 cm bore sizes have a total power range from 3,200 kW to 82,440 measured at L1. With a vast range of different fuel injection concepts from traditional fuel oils, to gaseous and liquid gasses, MAN ensures that you have your future fuel strategy covered.
All MAN B&W engines follow the same naming convention and seemingly random engine names actually carry a lot of useful information.
MAN PrimeServ protects your energy assets from day one
Whether you feed energy into the grid or satisfy a localized demand, on land or at sea, our technicians provide what you need – where and when you need it, ensuring the availability, flexibility, and profitability of your plant.
How you benefit:
- Fast, reliable and expert customer support
- Prompt delivery of OEM spare parts
- Bespoke O&M contracts
- Global service – 24 hours a day, 365 days a year
Make a choice
A two-stroke tool for supporting the negotiations between the yard, engine maker, and the customer.
MAN LGIP Product Posterpdf, 507 KB
MAN LGIP Factsheet 2021pdf, 449 KB
Pump Vaporizer Unit for LNG and ethanepdf, 4719 KB
MAN Direct Salespdf, 1296 KB
MAN B&W ME-GApdf, 620 KB
Marine engine programme 2021pdf, 17127 KB
MAN B&W ME-LGIPpdf, 1258 KB
Dual-fuel conversion for two-stroke applicationspdf, 1262 KB
Efficiency improvementspdf, 4409 KB
Basic principles of ship propulsionpdf, 6766 KB
MAN B&W ME-LGIP dual-fuel enginespdf, 2012 KB
Whatever your vessel, we have a fuel solution that fitspdf, 1575 KB
EGR Offered for Dual-Fuel ME-GA Engine
MAN Energy Solutions has announced that it is to offer its proprietary EGR (Exhaust Gas Recirculation) system as an emissions solution for its new, low-speed ME-GA engine, the Otto-cycle variant of its established ME-GI dual-fuel engine. EGR is a NOx-emissions-reduction technique that ensures IMO Tier III-compliance in both diesel and gas mode.
The company has long experience with the emission-reduction technology and reported the first order for an EGR system in 2011 when it was fully integrated within the MAN B&W 6S80ME-C9 main engine of a 4,500 teu containership newbuilding.
Thomas S. Hansen, Head of Promotion and Customer Support, MAN Energy Solutions, said: “Nine years have passed since our very first EGR system passed its Factory Acceptance Test, and the knowledge we have subsequently gained in the field has led to today’s fully-mature solution. Our EGR system not only achieves NOx-compliance, but also delivers a performance upgrade for both conventional and now ME-GA engines.”
MAN Energy Solutions reports that EGR will enable the ME-GA to reduce specific gas consumption by ~3%, and specific fuel-oil consumption by 5%. It will also significantly reduce methane slip by 30 to 50% and solve the issue related to pre-ignition on Otto-cycle engines.
Hansen continued: “With our hard-earned experience – added to the rigourous testing that all our EGR systems undergo – we are the de-facto market leader and play a vital role in decarbonising the maritime industry. Our robust EGR solutions fully integrate with other ship systems and are easily integrated with the ME-GA engine.”
MAN Energy Solutions states that it has received orders for over 241 engines with EGR, with more than 33 units already in service. The company expects to deliver the first, commercial ME-GA low-pressure dual-fuel engine by end-2021.
As previously stated, EGR will help reduce the ME-GA’s methane slip by 30 to 50%, while lowering specific gas consumption by around 3% and specific fuel-oil consumption in diesel mode by 5%. EGR will enable the ME-GA to meet Tier III requirements in both fuel oil and gas modes without additional aftertreatment.
MAN Energy Solutions plans to make the EGR option available from late 2021, concurrent with the introduction of the ME-GA. The company’s experience with designing and delivering low-pressure and high-pressure EGR versions has enabled it to bring the new solution to market in a relatively short time.
The ME-GA EGR solution is a high-pressure system, which can be integrated into existing engine-room designs, and the EGR unit itself does not change the engine footprint. Its design-similarity to that of ME-C engines’ EGR systems will lower its price point, since the supply chain and components are already matured.
The EGR system works through drawing around 30 to 50% of the engine’s exhaust gas into the EGR receiver, where it passes through a pre spray to lower its temperature, before passing through a cooler spray. After passing through a water-mist catcher, the gas then goes through a blower to increase pressure back up to scavenging air pressure, before being fed back into the compressor and the engine.
The volume requirements of the ME-GA EGR system are significantly lower with, for example, less pipework required than for low-pressure EGR solutions.
Introducing an EGR solution also improves the stability of the combustion process. MAN Energy Solutions is currently researching how far it can lower methane slip while maintaining a good equilibrium with recirculation.
MAN Energy Solutions is developing the high efficiency, low-pressure, two-stroke, dual-fuel MAN B&W ME-GA engine at its Research Centre Copenhagen. The engine delivers a low CAPEX solution aimed at certain vessel types and applications – such as LNG carriers – that are able to use ‘boil-off’ gas as a source of fuel, or smaller ships where low capital outlay is a priority.
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.