New | M 25 C Marine Propulsion Engine

The M 25 C, part of the MaK long-stroke engine generation, is based on the proven design characteristics of the M 20 C, M 32 C and M 43 C engine series. When developing this new engine generation, the objective was to achieve a high benefit level for the customer. In all design and development considerations, therefore, three criteria had the highest priority: reliability, economy and environmental compatibility. Other points of significance in the engine’s design and development work were ease of maintenance, long maintenance intervals, long component life and ease of installation.

Power Rating
Power Range1740-3000 kW
Engine Specifications
Speed Range720-750 rpm
EmissionsIMO II
AspirationTurbocharged
Bore10.0 in
Stroke15.78 in
Swept volume1244.89 in3
Rotation (from flywheel end)Counterclockwise/Clockwise
ConfigurationInline 6,8,9 Cylinder
Dimensions & Weights
Minimum Dry Weight46738 lb
Minimum Length210.4 in
Maximum Length264.5 in
Minimum Height133.3 in
Maximum Height148.4 in
Minimum Width88.1 in
Maximum Width90.2 in

This Mak Design Principles Is Most Clearly Reflected In The Reduction In The Number Of Components. About 40 % Of Parts Have Been Dispended. It Has Resulted In A Marked Gain In Operational Reliability And A Reduction In Operating Costs.

The Complete Diesel Engine Is Notable For Its Ease Of Installation, Reliable Operation, Ease Of Maintenance And Good Component Accessibility.

  • Low Fuel Consumption

In Addition To Many Outstanding Technical Features, The Long-stroke M 25 C Engine Is Also Easy To Install And Provides Good Maintenance Access To All Components.

  • Long Maintenance Intervals And Component Life

The Supply Of Complete Propulsion Systems Is A Market Requirement Which Is Becoming Increasingly Important.

  • Robust And Simple
  • Reduction In The Number Of Components
  • Environmentally-friendly Due To Low Nox And Co2 Emissions
  • System Responsibility And Supply From A Single Source, Accurately Matched Interfaces And Coordinated Delivery Data Control
Air Inlet System
  • Air intake silencer / filter
Control System
  • Load sharing unit (for multiple engine plant only)
  • Protection panel (emergency stop, override, reset push buttons)
  • Protection system
  • Serial link interface (MODbus / canbus)
  • Speed governor
  • Start / stop panel
Cooling System
  • 2-stage charge air cooler
  • Electronic cooling water preheater
  • HT cooling water pump (engine driven)
Exhaust System
  • Exhaust gas expansion joint
  • Exhaust gas insulated manifolds
  • Turbocharger at flywheel end
Fuel System
  • Fuel circulating pump (attached / MGO/MDO only)
  • Fuel indicator filter
  • Fuel pressure valve (attached / MGO/MDO only)
Instrumentation
  • Control push buttons and lamps
  • Emergency stop lever
  • Local control panel
  • Pressure and temperature indicator
Lube System
  • Dry sump
  • Lube oil plate cooler (separate)
  • Lube oil pump (engine driven)
  • Lube oil self-cleaning filter
  • Pressure regulating valve
Mounting System
  • High flexible coupling
  • Rigid mounting
Starting System
  • Electrical barring device
  • Starting air valve
General
  • Lifting device (rental)
  • Torsional Vibration Calculation (TVC)

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