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Mitsubishi
6UEC52LSE
The Mitsubishi 6UEC52LSE is a six‑cylinder, inline, low‑speed two‑stroke main engine with electronic fuel and valve control, delivering high specific fuel efficiency (≈165 g/kWh) across HFO, VLSFO and MGO.
10080.0 kW
Power
Engine Specifications
6
Cylinders
520 mm
Bore
1820 mm
Stroke
Components & Design
Component data being added…
Technical Data
SFOC (UEC60LSE-Eco-A2)
164-170 g/kWh (IMO Tier II)
BMEP (UEC60LSE)
20.0-21.0 bar @ MCR
Piston speed (UEC60LSE)
8.4 m/s
Dry mass UEC60LSE 8-cyl
447 tons
Dry mass UEC60LSE 5-cyl
300 tons
Bore/Stroke ratio UEC60LSE
4.00
Stroke/Bore UEC68LSE
3.96
Electronically controlled
Fuel injection, exhaust valve, cylinder lubrication (ECL)
configuration
inline
rpm
120
fuel type
HFO/VLSFO/MGO
technology
UE LSE Electronically Controlled
displacement l per cyl
386.5
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Common failures & inspection points
Exhaust valve fouling due to sodium/vanadium deposits (Na2SO4, CaSO4, V2O5) with heavy fuel oil containing high sulphur content (up to 5%); below dew point conden
Turbocharger fouling due to coal and ash particles in exhaust gas during low-load operation, BMEP decline and combustion deterioration
Piston ring leakage and fuel dilution (>2-3%) due to wear on cylinder running surface/piston rings, increased blowby and oil contamination
Cylinder liner wear due to corrosive combustion with sulphurous fuel oil; inspection criterion: wear according to height of sliding surface, max. permissible
Main bearing wear due to oil contamination; weekly inspection for water ingress (<2% permissible) and 3-month analysis for wear metals (Fe, Cu) required
Type-general inspection and maintenance points for this equipment category — not model-specific.
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Equipment Model #67465
· ✓ still in production