"> MAN Energy Solutions 20V45/60CR
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MAN Energy Solutions

20V45/60CR

The MAN 20V45/60CR is a 20‑cylinder V‑type, four‑stroke trunk piston marine diesel engine delivering up to 19 MW (≈19 000 kW) at about 514 rpm, with two‑stage turbocharging and common‑rail injection, intended for large commercial vessels requiring high power density and fuel flexibility.

19000.0 kW
Power

Engine Specifications

20
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 19000
rpm 514
fuel type HFO/MDO
configuration V

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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 #123349 · ✓ still in production