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MAN L51/60DF

Product catalog summary

Overview: The MAN 51/60DF engine combines diesel and gas technologies, offering fuel flexibility and efficient performance for marine propulsion. It is designed to provide high power output, low fuel consumption, and compliance with emission regulations.

Specifications:

Engine Cycle: Four-Stroke
Number of Cylinders: 6, 7, 8, 9
Bore and Stroke: 510 mm x 600 mm
Swept Volume per Cylinder: 122.6 dm³
Fuel Consumption at 85% MCR: Diesel Mode - 177.5 g/kWh, Gas Mode - 7,330 kJ/kWh
Cylinder Output (MCR): 975 kW at 500 rpm, 1000 kW at 514 rpm
Power-to-Weight Ratio: 16.4 – 18.1 kg/kW

Compliance: The engine meets IMO Tier II and Tier III emission regulations, with Tier III compliance in gas mode and diesel mode using MAN SCR.

Main Features:

Turbocharging: High efficiency constant pressure MAN TCA series exhaust turbocharging system
Engine Automation: MAN in-house developed Safety and Control System
Fuel System: Common Rail pilot fuel injection, conventional main injection, and variable injection systems
Gas System: Cylinder individual low pressure gas admission system
Cooling System: 2-string high and low temperature cooling water systems
Starting System: Starting air valves within cylinder heads
Engine Mounting: Resilient or rigid mounting

Optional Equipment: Includes Fuel Sharing mode, 100% Power Take-Off, and variable inlet valve timing for improved combustion.

Performance Data:

Output Speed: 514 and 500 rpm
Mean Effective Pressure (mep): 19.1 bar
Power Output: Ranges from 6,000 kW to 9,000 kW depending on the number of cylinders

Dimensions and Mass:

Length (L): Varies from 8,494 mm to 11,160 mm
Width (W): 3,165 mm to 3,283 mm
Dry Mass: 106 t to 148 t

Additional Information: The document notes that all data is non-binding and subject to change based on specific project requirements and conditions.

Catalog excerpts

STROKE MARINE ENGINES Let your fuel take you further. By combining diesel and gas technologies in one engine, the MAN 51/60DF gives you absolute fuel flexibility. There’s no better way to keep your engine running effectively and economically. Full steam ahead. .. High power output .. Lowest fuel consumption over entire engine load .. Best load acceptance behaviour .. Full fuel flexibility .. High reliability and long TBOs

Open the catalog to page 1

.. Engine cycle: Four-Stroke .. No. of cylinders: 6, 7, 8, 9 .. Bore: 510 mm – Stroke: 600 mm .. Swept volume per cyl: 122.6 dm³ .. Diesel Mode: 177.5 g/kWh .. Gas Mode: 7,330 kJ/kWh Compliance with emission regulations .. IMO Tier II .. IMO Tier III (Gas mode) .. IMO Tier III (Diesel mode with MAN SCR) Main features .. Turbocharging system LHV of fuel gas ≥ 28,000 kJ/Nm3 (Nm3 corresponds to one cubic meter of gas at 0 °C and 1.013 bar) Minimum centreline distance for twin engine installation: 3,200 mm Last updated August 2016 Common Rail pilot fuel injection system Conventional main injection...

Open the catalog to page 2

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