MAN Engines

The new MAN E3872 gas engine

MAN E3872 gas engine

44 % efficiency and 735 kW power from just 12 cylinder displacement

MAN Engines is significantly extending its power range for stationary gas engines upwards. At the same time, we are staying true to our high power density philosophy. The result is the new E3872 series with its impressive power of 735 kWmech from just 12 cylinders.The effective mechanical efficiency achieved by the natural gas version at 50 Hz is equally spectacular: a striking 44 %.

The new MAN E3872 stationary gas engine

Optimum performance from just 12 cylinders.

  • The new MAN E3872 stationary gas engine design has a bore of 138 mm and a stroke of 165 mm.
  • With 29.6 litres of displacement and just 12 cylinders, it achieves a maximum power of 735 kWmech.
  • As a result, the 4-stroke petrol gas engine is designed for power and heat generation.
  • There is a wide range of applications: From the agricultural and municipal sectors, hotels and hospitals, to industrial plants.

KEY NEW FEATURES OF THE MAN E3872 STATIONARY GAS ENGINE

MAN E3872
Highly efficient single turbocharger

Highly efficient single turbocharger

By fine-tuning the inlet and outlet guide vane units (diffuser and nozzle ring), the turbocharger can be operated at the compressor and turbine’s exact optimum efficiency. This reduces the charge cycle work.

M18 prechamber spark plugs

M18 prechamber spark plugs

They are specially adapted for the combustion chamber. In the newly designed combustion chamber, ignition of the gas now occurs at several locations. This has a positive impact by accelerating combustion. In addition, there are further improvements to combustion stability during low-NOx operation.

Camshaft with Atkinson cycle

Camshaft with Atkinson cycle

Rather unusual for stationary engines, but with a major positive impact on efficiency

Steel pistons

Steel pistons

With their trough-like geometry, they help to accelerate combustion and thus increase efficiency.

Operation with natural gas with NOx emissions = 250 mg/Nm³ (5 ref. vol. % O2)

Fuel Natural gas
Frequency 50 Hz
Arrangement/number of cylinders V12
Boremm138
Strokemm165
Displacementl29.6
Effective rated powerkWmech735
Nominal speedrpm1,500 (50 Hz)
Mean effective pressurebar19.85
Exhaust status NOx
(with 5 % residual oxygen)		mg/Nm3250
Effective mechanical efficiency
(at NOx =250 mg/Nm3; 5 % O2)		%43,7
Engine lengthmm1805
Engine widthmm1243
Engine heightmm1407
Weight (dry)kg2159

Last updated: 12/03/2024. Since our products are in continuous devlopment, we reserve the right to make technical modifications.

A version for markets requiring speeds of 1,800 rpm (60 Hz) is also planned. As part of the process of converting our stationary natural gas engine range to “hydrogen readiness”, the new MAN E3872 will be designed to accommodate a hydrogen (H2) admixture when operated with natural gas.

To press release “Hydrogen Readiness”

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