"> Mitsubishi UEC45LSE-Eco
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Mitsubishi

UEC45LSE-Eco

The Mitsubishi UEC45LSE‑Eco is a medium‑speed, electronically controlled two‑stroke diesel main engine designed for bulk carriers and tankers, notable for its high fuel efficiency and low emissions.

Engine Specifications

450 mm
Bore
1350 mm
Stroke

Components & Design

Component data being added…

Technical Data

Bohrung x Hub UEC45LSE 450 x 1930 mm
Bohrung x Hub UEC50LSE 500 x 2050 mm
BMEP UEC45LSE 22.0 bar (C1-Variante 22.0 bar)
BMEP UEC50LSE 20-21 bar
Mittlere Kolbengeschwindigkeit UEC45LSE 8.5 m/s (Basis für 6-Zyl @ 130 rpm)
Mittlere Kolbengeschwindigkeit UEC50LSE 8.0-8.5 m/s
SFOC UEC45LSE 169 g/kWh (geprüft 2008)
SFOC UEC50LSE-Eco-B1 167 g/kWh (6-Zyl-Basis @ 124 rpm)
Trockengewicht UEC45LSE 195 tonnes (6-cylinder base), 161–243 t depending on configuration
Trockengewicht UEC50LSE 188-405 Tonnen (5-10 Zyl mit Gusseisenbett-Optionen)
Leistung pro Zylinder UEC45LSE 1245 kW (6-Zyl @ 130 rpm)
Hub/Bohrung Verhältnis 4.0-4.29 (LSE-Serie)
Turbolader Mitsubishi MET (High-Efficiency-Typ) mit 2-stufiger Option
Lager Plain bearings with white metal (aluminium or tin base)
Energieeffizienz-Status Höchste Klasse in der Serie (gegenüber UEC52LA-Vorgänger)
IMO Tier-Compliance Tier II/III (Eco-Varianten mit SCR/LP-EGR)
Hubvolumen pro Zylinder UEC45LSE ~302 Liter (450 x 1930 mm)
Hubvolumen pro Zylinder UEC50LSE ~402 Liter (500 x 2050 mm)
rpm 155
fuel type HFO/VLSFO/MGO
technology UE Eco Electronically Controlled

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Common failures & inspection points

Injector valve wear (wear marks on valve seat/valve disc due to poor cooling or oxidation)

Borescope inspection of exhaust valve seats for scratches/wear, dye penetrant test for cracks, leakage measurements (valve should hold pressure under compressed air for 15 min)

Piston ring wear and liner scratch marks due to lubrication film starvation (especially at part load operation)

Liner surface inspection for scratches/grooves, piston run gemietlich measurement, lubricant flow rate check (wrong parameters for part load operation)

Exhaust gas cooler fouling (oil film + water deposits, particularly in drying disturbances)

Measure pressure drop across cooler, check air temperature after cooler, inspect drainage separator for water accumulation

Plain bearing wear with white metal extrusion due to overload (>10% wear critical)

Tägliche Kurbelgehäuse-Ölprobe auf Weißmetall-Partikel (>0.5 mm mit glatter Oberfläche beidseitig = Überbelastung), Lagerspiel-Kontrolle per Schieblehre

Crankshaft grinding fatigue due to stress concentrations (fatigue fracture rare, but possible at spring transition radii)

Check crankshaft bearing flanges with magnifying glass for cracks; crankshaft deflection measurement via dial gauge (indicator set: <0.1 mm critical)

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

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Equipment Model #67453 · ✓ still in production