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Mitsubishi
5UEC68LSE
Mitsubishi UEC (Unified Exhaust-port Crosshead) series. Various sub-types: LS, LSE, LSII, LA. J-ENG (JMU + MHI joint venture) continues development from 2018.
19500.0 kW
Power
Engine Specifications
5
Cylinders
680 mm
Bore
2200 mm
Stroke
19,500 kW
MCR Power
93.0 rpm
MCR RPM
2-stroke
Stroke Type
Family: Mitsubishi UEC (LS/LA/LSE/LSII)
· Tier: IMO Tier II
· Fuel: HFO, MDO
Other Cylinder Configurations 44
5UEC33LSE
5 cyl
· 3,100 kW
5UEC37LA
5 cyl
· 4,250 kW
5UEC43LSE
5 cyl
· 6,000 kW
5UEC45LA
5 cyl
· 7,000 kW
5UEC50LSE
5 cyl
· 9,250 kW
5UEC50LSII
5 cyl
· 9,500 kW
5UEC52LA
5 cyl
· 10,250 kW
5UEC60LS
5 cyl
· 14,500 kW
5UEC60LSII
5 cyl
· 15,250 kW
5UEC68LSII
5 cyl
· 20,250 kW
5UEC85LSII
5 cyl
· 29,000 kW
6UEC33LSE
6 cyl
· 2,100 kW
6UEC37LA
6 cyl
· 5,100 kW
6UEC43LSE
6 cyl
· 7,200 kW
6UEC45LA
6 cyl
· 5,610 kW
6UEC50LSE
6 cyl
· 7,320 kW
6UEC50LSII
6 cyl
· 11,400 kW
6UEC52LA
6 cyl
· 12,300 kW
6UEC60LS
6 cyl
· 17,400 kW
6UEC60LSII
6 cyl
· 18,300 kW
6UEC68LSE
6 cyl
· 23,400 kW
6UEC68LSII
6 cyl
· 24,300 kW
6UEC85LSII
6 cyl
· 22,680 kW
7UEC33LSE
7 cyl
· 4,340 kW
7UEC37LA
7 cyl
· 5,950 kW
7UEC43LSE
7 cyl
· 8,400 kW
7UEC45LA
7 cyl
· 9,800 kW
7UEC50LSE
7 cyl
· 12,950 kW
7UEC50LSII
7 cyl
· 13,300 kW
7UEC52LA
7 cyl
· 14,350 kW
7UEC60LS
7 cyl
· 14,420 kW
7UEC60LSII
7 cyl
· 21,350 kW
7UEC68LSE
7 cyl
· 27,300 kW
7UEC68LSII
7 cyl
· 28,350 kW
7UEC85LSII
7 cyl
· 40,600 kW
8UEC33LSE
8 cyl
· 4,960 kW
8UEC43LSE
8 cyl
· 9,600 kW
8UEC45LA
8 cyl
· 11,200 kW
8UEC50LSE
8 cyl
· 14,800 kW
8UEC50LSII
8 cyl
· 15,200 kW
8UEC52LA
8 cyl
· 16,400 kW
8UEC60LSII
8 cyl
· 24,400 kW
8UEC68LSII
8 cyl
· 32,400 kW
8UEC85LSII
8 cyl
· 46,400 kW
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)
unified from engine model
True
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Common failures & inspection points
Exhaust valve fouling durch Natrium/Vanadium-Ablagerungen (Na2SO4, CaSO4, V2O5) bei schwerem Brennstoff mit hohem Schwefelanteil (bis 5%); unter Taupunkt konden
Turbolader-Verschmutzung durch Kohle- und Ascheteilchen im Abgas bei Niedriglastarguetrieb, BMEP-Rückgang und Verbrennungsverschlechterung
Kolbenringleckage und Brennstoffverdünnung (>2-3%) durch Verschleiß an Zylinderlauffläche/Kolbenringen, erhöhter Blowby und Öl-Kontamination
Zylinderliner-Verschleiß durch korrosive Verbrennung bei schwefelhaltigem Brennstoff; Inspektionskriterium: Verschleiß nach Höhe der Gleitfläche, max. zulässig
Wellenlager-Verschleiß durch Öl-Kontamination; wöchentliche Prüfung auf Wassereintritt (<2% zulässig) und 3-Monats-Analyse auf Verschleißmetalle (Fe, Cu) erford
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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Equipment Model #38581
· ✓ still in production