"> MAN Energy Solutions 9L45/60CR
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MAN Energy Solutions

9L45/60CR

The MAN 9L45/60CR is a high‑power, medium‑speed (≈514 rpm) four‑stroke trunk‑piston marine diesel engine delivering up to 8 550 kW, designed for large commercial vessels that need compact power density and low emissions.

8550.0 kW
Power

Engine Specifications

9
Cylinders
450 mm
Bore
600 mm
Stroke
4-stroke
Stroke Type

Components & Design

Component data being added…

Technical Data

Bore/Stroke 450/600 mm
Displacement per cylinder 103 liters
Power per cylinder 1,300 kW @ 600 rpm
BMEP (Brake Mean Effective Pressure) 25.24 bar
Turbocharging Two-stage (low + high pressure in series)
Injection System Common-rail with ECOMAP capability, SaCoS 5000 control
Fuel efficiency improvement 5-12% cost benefit vs equivalent competitors (est. €0.9-2.4M annual savings for 120-150k GT cruise vessel)
Cylinder arrangement Four-stroke, non-reversible, charge-air cooled
Emissions IMO Tier II standard; Tier III with compact SCR system
power kw 8550
rpm 514
fuel type HFO/MDO
configuration L

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Common failures & inspection points

Fretting corrosion in main bearing bore - allgemein fuer Viertakt-Marinediesel

Plug hole in main bearing cap; fuellen mit zwei-komponentigem Dichtstoff; Hauptlagerbefestigung ueberpruefung

Scavenge space contamination and corrosion (clover-leaf pattern on cylinder liners) - general for four-stroke marine diesel

Regelmaessige Reinigung Scavenge-Raum; Drain-Taschen reinigen; saeure-Korrosion auf Laufbuchsen ueberpruefung

Turbocharger bearing wear and MTBF (Mean Time Between Failures ~6,387 operating hours) - general for turbo.

Exhaust gas temperature monitoring (before/after turbine); adapt service intervals to degree of fouling

Crankshaft fatigue failure at fillet radius (10 o'clock - 2 o'clock position at TDC) - general for heavy-duty diesel engines

Kurbelwellen-Durchbiegung Messung; Hauptlager-Ausrichtung mit Lagerbock-Messlehre; Torsionsvibration ueberwachung

Bearing damage from lubricating oil deficiency (bearing wipe-out) - general for marine diesel

Oil distribution system flow rate test; monitor bearing wear and degradation during inspections

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

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Equipment Model #123344 · ✓ still in production