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9LM43C

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

Class-certified type (DNV register) · technical data sheet not yet verified​‌⁠‍​‍⁠⁠‍⁠​‍⁠⁠​‍‌​⁠​
8,550 kWPower
9Cylinders
430 mmBore
610 mmStroke

Marine engineers and operators rely on reliable and efficient propulsion systems to ensure the smooth operation of their vessels. One such reliable system is the MaK 9LM43C, designed to meet the high demands of marine propulsion with its robust 9-cylinder configuration and a power output of 8550 kW at 500 rpm. This engine is fueled by Heavy Fuel Oil (HFO) or Marine Diesel Oil (MDO) and is known for its efficiency, with a specific fuel oil consumption (SFOC) of 175–178 g/kWh when optimized for HFO. The engine features a nodular cast iron cylinder block, which provides enhanced wear resistance compared to gray iron. Maintenance considerations include regular inspection and cleaning of the turbocharger every 15,000 operating hours, as well as monitoring for common issues like fuel oil corrosion, turbocharger bearing wear, and carbon deposits in fuel injectors.

Specifications

Technical data.from datasheet

Every value below comes from the manufacturer datasheet or class-society record on file for this model.

SFOC (Specific Fuel Oil Consumption)175–178 g/kWh (HFO optimized)
Lube Oil Consumption0.6 g/kWh standard; 0.3 g/kWh optional
Engine Type4-stroke turbocharged intercooled non-reversible with direct injection
Cylinder Block MaterialNodular cast iron (Kugelgraphitguss)
Turbocharger Maintenance Interval15,000 operating hours (inspection/cleaning)
Per-Cylinder Power Output~700–760 kW/cylinder
Engine Centre Distance3400 mm
Charge Air CoolerCast casing with 40% increased base area for turbocharger mounting
Power (kW)8550
Speed (rpm)500
Fuel TypeHFO/MDO
ConfigurationL
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Download datasheet (PDF) (7636 KB)
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