M 20 C

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The main features of the diesel generator set M 20 C are ease of installation, reliable operation, ease of maintenance and easy component accessibility. Its base is the rigid frame which forms a foundation for both the engine and the generator set and includes an integral, large-capacity oil sump and universal fuel supply equipment covering both HFO and MDO operation. The M 20C has a wide range of application providing power for the continuous generation of electricity where a high level of reliability is important. The power range of the M20C engine series as a generator unit varies from 1,224 to 2,160 kVA.

Generator Set Specifications

  • Minimum Rating 979 kWe (1224 kVA) 979 kWe (1224 kVA)
  • Maximum Rating 1726 kWe (2160 kVA) 1726 kWe (2160 kVA)
  • Emissions/Fuel Strategy IMO II IMO II

Engine Specifications

  • Configuration 6,8,9 Cylinder 6,8,9 Cylinder
  • Bore 7.87 in 200.0 mm
  • Stroke 11.81 in 300.0 mm
  • Swept Volume 573.62 in³ 9.4 l/cyl

Generator Set Dimensions and Weights - Dependent on Generator Type

  • Height 2833 mm - 3010 mm (111.5 in - 118.5 in) 2833 mm - 3010 mm (111.5 in - 118.5 in)
  • Length 6073 mm - 7125 mm (239.1 in - 280.5 in) 6073 mm - 7125 mm (239.1 in - 280.5 in)
  • Weight 18.8 t - 30.0 t (41447 lbs - 66139 lbs) 18.8 t - 30.0 t (41447 lbs - 66139 lbs)
  • Width 1680 mm - 1816 mm ( 66.1 in - 71.5 in) 1680 mm - 1816 mm ( 66.1 in - 71.5 in)

HFO/MDO – Long TBO and lifetime

Long maintenance intervals and the life of components are the basis for low operating costs.

Complete engine

The engine is marketed with a standardized range of installed pumps and filters. Interfaces for fuel, lubricating oil and cooling water systems are located at the opposite end of the crankshaft coupling for ease of connection.

Reliable energy supply

The complete diesel generating set is notable for its ease of installation, reliable operation, ease of maintenance and good component accessibility. The basis is formed by the rigid base frame as foundation of the engine and alternator with integrated oil sump, large oil volume and universal equipment for both HFO and MDO operation.

Complete propulsion systems

System responsibility and supply from a single source, accurately matched interfaces, coordinated delivery data control.

M 20 C Standard Equipment

Air Inlet System

  • Air intake silencer / filter

Control System

  • Load Sharing Unit (for multiple engine plant only)
  • Protection System
  • Serial Link Interface (MODbus RTU / canbus)
  • Speed governor

Cooling System

  • Charge air cooler
  • Electric cooling water preheater (fitted on base frame)
  • HT cooling water pump (engine driven)
  • LT cooling water pump (engine driven)

Exhaust System

  • Exhaust gas expansion joint
  • Exhaust gas insulated manifolds
  • Turbocharger at counter-flywheel side

Fuel System

  • Fuel circulating pump (attached / for MDO/MGO only)
  • Fuel indicator filter
  • Fuel pressure valve (separate / for MDO/MGO only)


  • Control push buttons and lamps
  • Emergency stop lever
  • Local control panel
  • Pressure and temperature indicator

Lube System

  • Lube oil cooler
  • Lube oil pump (engine driven)
  • Lube oil self-cleaning filter
  • Oil sump in base frame
  • Pre-lubricating oil pump (electr. driven/fitted on base frame)
  • Pressure regulating valve

Mounting System

  • Flexible pipe connections
  • High flexible coupling
  • Resilient mounting

Starting System

  • Air starting motor
  • Manual barring device


  • Engine, flex. coupling and generator mounted on a common base frame
  • Flywheel cover
  • Lifting device (rental)
  • Torsional Vibration Calculation (TVC)

M 20 C Optional Equipment

Air Inlet System

  • Air inlet shut-off valve
  • Air intake transition piece
  • Expansion joint
  • Silencer / filter

Control System

  • Air injection control (for better load request)
  • Electronic speed governor
  • Engine alarm system
  • Remote indicators (start air pressure, engine speed, etc.)
  • Starter for electric driven pumps
  • 24 DC UPS

Cooling System

  • FW/SW plate cooler
  • HT cooling water pump (electric driven)
  • LT cooling water pump (electric driven)
  • Sea water cooling pump (electric driven)
  • Temperature control valve

Exhaust System

  • Silencer (with or without spark arrester)

Fuel System

  • Fuel oil cooler
  • HFO final preheater
  • HFO pressure regulating valve
  • HFO self-cleaning automatic filter
  • HFO supply and booster pumps (electrical driven)
  • HFO treatment and supply modules
  • HFO viscosity control device
  • Mixing tank

Lube System

  • Lube oil centrifuge
  • Lube oil pump (electrical driven)
  • Lube oil treatment and combined modules

Mounting System

  • Double resilient mounting

Starting System

  • Starting air compressor
  • Starting air receiver


  • Engine PTO coupling
  • Generator customer supply
  • PTO shaft on counter-flywheel side

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