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MAN Energy Solutions

14V32/40

MAN L32/40 (Legacy) — Viertakt-Marinediesel, Bohrung 320 x Hub 400 mm, 720/750 (rated); 450 (idle) rpm, 3000-9000 kW (inline: 3000-4500 kW; V-type: 6000-9000 kW). Brennstoff: MGO (Marine Gas Oil), MDO (Marine Diesel Oil), HFO (Heavy Fuel Oil). Status: Legacy - Succeeded by L32/44CR series; in-service on existing vessels. Verifiziert, Datenblatt verlinkt.

6300.0 kW
Power

Engine Specifications

14
Cylinders
320 mm
Bore
400 mm
Stroke
4-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

Cylinder displacement 32 L/cylinder
Power per cylinder 500 kW/cyl
Mean Effective Pressure (MEP) 25.9 bar (720 rpm) / 24.9 bar (750 rpm)
Mean piston speed 9.6 m/s (720 rpm)
Specific fuel oil consumption (100% MCR) 186 g/kWh
Specific fuel oil consumption (85% load) 183 g/kWh
Lube oil consumption 0.5 g/kWh
Dry mass (6L32/40) 38 tonnes
Dry mass (8L32/40) 47 tonnes
Dry mass (12V32/40) 61 tonnes
Dry mass (18V32/40) 85 tonnes
Compression ratio 4.5
Turbocharging Two-stage intercooling with advanced turbocharger
Scavenge system Two-stage charge air cooler (HT and LT circuits)
Engine type Four-stroke turbocharged Diesel, non-reversible (propulsion models)
power kw 6300
rpm 720
fuel type HFO/MDO
configuration V

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Common failures & inspection points

Cylinder liner wear - formation of wear ridge at top of liner, potential piston ring breakage during overhaul if ridge not removed

Measure liner bore diameter at top, middle, and bottom; remove wear ridges before new ring installation

Piston ring sticking from combustion residue and oil deposit accumulation

Monitor blow-by, perform visual inspection during overhaul, check ring groove deposits

Scavenge air cooler fouling (air-side and water-side) leading to increased air pressure drop and higher scavenge air temperature

Monitor pressure drop across cooler, measure temperature difference between inlet and outlet cooling water, visually inspect cooler fins

Scavenge space fire risk from soot, coke, and unburned fuel accumulation at slow steaming operation

Frequent scavenge space inspection during low-load operation, drain cooler water frequently, check flap valve movement

Turbocharger bearing lubrication failure and piston ring seal degradation in turbo compressor (high-speed rotation relative to main engine)

Monitor turbo discharge temperature, check compressor inlet air filter condition, inspect bearing play

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

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Equipment Model #123317 · ✓ still in production