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MAN Energy Solutions

8L51/60DF

MAN Energy Solutions (MAN B&W / MAN Diesel & Turbo) V 51/60DF — Viertakt-Marinediesel, Bohrung 510 x Hub 600 mm, 500-514 rpm rpm, 6000-20700 kW (MCR @ 500-514 rpm). Brennstoff: Dual-Fuel (99% Natural Gas + 1% Micro-Diesel Pilot; alternatively 100% Diesel HFO/MDO). Status: In Production (current as of March 2024: 310+ engines in service; methanol retrofit capability planned from autumn 2025). Verifiziert, Datenblatt verlinkt.

9336.0 kW
Power

Engine Specifications

8
Cylinders
510 mm
Bore
600 mm
Stroke

Components & Design

Component data being added…

Technical Data

Swept Volume per Cylinder 122.6 dm³
Output per Cylinder (MCR) 1050 kW @ 500-514 rpm
Diesel Fuel Consumption (85% MCR) 176 g/kWh
Gas Mode Consumption (85% MCR) 7150 kJ/kWh
Dry Mass - 12V51/60DF (Propulsion) 189 t
Dry Mass - 18V51/60DF (Propulsion) 265 t
Engine Cycle Four-Stroke
Emissions Compliance IMO Tier II, IMO Tier III (Gas & Diesel+SCR modes)
Fuel Flexibility Seamless switching between gas/liquid during operation
configuration L
rpm 514
fuel type Dual-Fuel LNG/HFO
technology Dual-Fuel CR
power kw 9336

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Common failures & inspection points

Lubricating Oil System Contamination: Extended operation with activated contamination display can lead to lube oil supply problems; running-in filter must be re
Piston Temperature Management: Crown scuffing risk if operating conditions cause thermal expansion to reduce piston-liner clearance; typically from over-fueling
Gas Fuel System Integrity: Dual-fuel systems require strict maintenance of gas supply cleanliness and pressure relief systems; hydrocarbon sensor monitoring ess
Turbocharger Boost Management: Stock turbocharger limitations at low-speed regions can compromise fuel consumption and combustion mode performance in dual-fuel
Cross-Head Bearing Maintenance: While MAN V51/60DF features optimized marine-head design for reduced service downtime, proper oil film maintenance and periodic

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #142780 · ✓ still in production