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9LM25C

Main Engine 4-Stroke · Main Engines (4-Stroke)

Class-certified type (DNV register) · technical data sheet not yet verified​‌⁠‍​‍⁠‍‌⁠‌‌‍‌⁠‌​⁠⁠‌
2,790 kWPower
9Cylinders
255 mmBore
400 mmStroke

Marine engineers and operators rely on reliable and powerful propulsion systems like the MaK 9LM25C to ensure smooth operations and efficient performance. This engine is part of the M25C family and is designed to deliver a continuous output of 2790 kW at 750 rpm, running on Heavy Fuel Oil (HFO) or Marine Diesel Oil (MDO). With a bore of 255 mm and a stroke of 400 mm, it features a 9-cylinder inline configuration, making it suitable for a wide range of marine applications. The engine's specific fuel consumption (SFOC) is approximately 183-184 g/kW, and it includes a turbocharger with selective catalytic reduction (SCR) availability. Maintenance checks should focus on the cylinder liner wear and overheating, piston ring wear and carbon deposits, fuel injector blockages and carbon buildup, turbocharger damage due to high exhaust back pressure, and valve timing issues and deposits on inlet/exhaust valves.

Specifications

Technical data.reference — unverified

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Hubvolumen (6M25)122 Liter / 122000 cc
Spezifischer Brennstoffverbrauch (SFOC)183-184 g/kW
Zylinderzahl6, 8 oder 9 inline-Zylinder
Kurbelwellendrehzahl720-750 U/min
Zylinderleistung300-333 kW pro Zylinder
Bauart4-Takt Diesel-Langhuber mit Turbolader (SCR-Ausfuehrung verfuegbar)
Komponentenreduktionca. 40% weniger Komponenten als Vorgaengerserie
Power (kW)2790
Speed (rpm)750
Fuel TypeHFO/MDO
ConfigurationL
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