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Mitsubishi
6UEC33LSE-Eco
The Mitsubishi 6UEC33LSE‑Eco is a six‑cylinder inline two‑stroke marine diesel engine with electronic fuel and valve control, delivering up to ~3400 kW while meeting IMO Tier II/III emissions limits.
3720.0 kW
Power
Engine Specifications
6
Cylinders
330 mm
Bore
1050 mm
Stroke
Components & Design
Component data being added…
Technical Data
Bohrung UEC33LSII
330 mm
Hub UEC33LSII
1050 mm
Hub/Bohr-Verhältnis UEC33LSII
3,18
Bohrung UEC37LSII
370 mm
Hub UEC37LSII
1290 mm
Leistung UEC33LSII (6-Zyl.)
1985–3400 kW @ 215/157 min⁻¹ (verifiziert)
SFOC UEC33LSII
179–183 g/kWh (IMO Tier II, Vollast)
Trockengewicht UEC33LSII
52–78 t (5–8 Zyl.)
Trockengewicht UEC37LSII
83–124 t (configuration not verifiable)
Betriebsmodus
Zweitakt-Kreuzkopfmotor, Gleichstromspülung, Abgasturbolader
Steuerung LSII
Nockenwelle (mechanisch betätigt)
Steuerung Eco-Variante
Elektronisch (Solenoidventile, keine Nockenwelle)
Brennstoff
Schweröl (Heavy Fuel Oil)
IMO-Norm
Tier II; Tier III-konform (mit LPSCR)
configuration
inline
rpm
195
fuel type
HFO/VLSFO/MGO
technology
UE Eco Electronically Controlled
displacement l per cyl
89.8
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Common failures & inspection points
Cold corrosion on cylinder liners due to sulfuric acid condensation at part load — typical for two-stroke diesels; sulfur dioxide from fuel by
Turbocharger wear due to saltwater corrosion — pitting on turbine casing due to seawater feed in exhaust line, pressure drop due to gap enlargement
Piston/cylinder liner wear due to scuffing at insufficient hydrodynamic oil film or poor scavenge air quality — abrasive wear initiat
Black exhaust at part load (turbo-lag phenomenon) — scavenge pressure increases only when turbocharger accelerates; too much fuel → incomplete combustion, r
Zylinderkopf-Wasserdichtung/Kühlung — Risse/undichte Kopfdichtungen ermöglichen Coolant-Eintrag in Kurbelgehäuse (Milchig-braune Ölverfärbung), Korrosion; Restr
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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Equipment Model #67450
· ✓ still in production