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.
SPECIFICATIONS
Power Range1740-3000 kW
Speed Range720-750 rpm
EmissionsIMO II
power rating
Power Range1740-3000 kW
engine specifications
Speed Range720-750 rpm
EmissionsIMO II
AspirationTurbocharged
Bore255 mm
Stroke400 mm
Swept volume20.4 l/cyl.
Rotation (from flywheel end)Counterclockwise/Clockwise
ConfigurationInline 6,8,9 Cylinder
dimensions
WeightsMinimum Dry Weight
212 t
Dimensions Weights
minimum length
5345 mmDimensions
weights
Maximum Length6719 mm
dimensions
WeightsMinimum Height
3387 mm
Dimensions Weights
maximum height
3769 mmDimensions
weights
Minimum Width2237 mm
dimensions
WeightsMaximum Width
2291 mm
M 25 C STANDARD EQUIPMENT
- 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)
M 25 C OPTIONS
- air inlet system
Air inlet shut-off valve
Air intake transition piece
Expansion joint
Silencer / filter - control system
Electronic speed governor
Engine alarm system
Remote control 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)
Steam / thermal oil cooling water preheater
Temperature control valve - exhaust system
Silencer (with or without spark arrester)
Turbocharger at counter-flywheel side - 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
Pre-lubricating oil pump (electrical driven)
Temperature control valve
Wet sump with dip stick - mounting system
Flexible pipe connections
Resilient mounting - starting system
Starting air compressor
Starting air receiver - general
Cat Propulsion Systems
Engine PTO coupling
PTO alternator
PTO shaft on counter-flywheel side
Reduction gear
Reduction gear PTO coupling