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MTU
16VSeries 8000 M91L
The MTU 16V Series 8000 M91L is a medium‑speed, four‑stroke V‑16 diesel main propulsion engine delivering 8 MW (≈10 800 hp) at 1 150 rpm, notable for its high power density and IMO Tier III low‑emission capability.
7360.0 kW
Power
Engine Specifications
16
Cylinders
265 mm
Bore
315 mm
Stroke
Inspector Detail
✓ verified
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Common issues
- Turbocharger wear due to contamination and lubricant problems
- Turboladerschaufeln-Erosion
- Turbinen-Gehäuse-Risse
- Schmiermittelverunreinigung
- Kühlwasserverschmutzung
- Zylinderkopfdichtungslecks
- Kolbenringverschleiß
Inspection checklist
- Check turbocharger and turbines for wear and cracks
- Check lubricant for contamination and viscosity
- Check cooling water system for contamination and corrosion
- Zylinderkopfdichtungen auf Lecks überprüfen
- Check piston rings for wear
- Check fuel system for leaks and contamination
- Check ventilation and filters for cleanliness and function
- Check electrical systems for function and safety
- Check emergency and safety systems for function and compliance with regulations
Service intervals
| Ölwechsel | 1,000-1,500 operating hours |
| Filterwechsel | 500-1,000 operating hours |
| Turbinen- und Turbolader-Inspektion | 5,000-10,000 operating hours |
| Zylinderkopf-Inspektion | 10,000-20,000 operating hours |
| Kolbenring-Inspektion | 10,000-20,000 operating hours |
Typical wear limits
| Turboladerschaufeln | 0,5-1,0 mm Abnutzung |
| Turbinen-Gehäuse | 0,1-0,5 mm Rissbildung |
| Zylinderkopfdichtungen | 0,1-0,5 mm Leckage |
| Kolbenringe | 0,5-1,0 mm Abnutzung |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Critical spares
- Turboladerschaufeln
- Turbinen-Gehäuse
- Zylinderkopfdichtungen
- Kolbenringe
- Schmiermittel-Pumpen
- Kühlwasserpumpen
- Brennstoff-Pumpen
- Elektrische Anlagen-Komponenten
Safety
- Fire hazard from hot surfaces and open flame
- Explosion hazard from flammable gases and vapours
- Electrical hazards from inadequate insulation and grounding
- Mechanical hazards from inadequate maintenance and inspection
- Environmental hazards from oil and chemical leaks
Class survey
The surveyor checks compliance with the manufacturer's regulations and recommendations, the functionality of the safety systems and compliance with environmental protection regulations.
Estimated lifetime:
30,000-50,000 operating hours
Components & Design
Component data being added…
Technical Data
Hubraum (20V)
347,4 Liter (21.200 cu in)
Hubraum (16V)
278 Liter (16.964 cu in)
Trockengewicht (20V M71/71L)
45.300 kg (98.870 lbs)
Nassgewicht (20V M71/71L)
47.665 kg (105.080 lbs)
Trockengewicht (16V)
42.000 kg (92.594 lbs)
Spez. Verbrauch M71
189-190 g/kWh @ Nennleistung
Spez. Verbrauch M91L
199 g/kWh (±5% per ISO 3046) @ Nennleistung
Abmessungen (20V)
6645 x 2040 x 3375 mm
Abmessungen (16V)
5698 x 2040 x 3375 mm
Leistung 20V M71
8.200 kW @ 1.150 rpm (Dauerlast)
Leistung 20V M90
9.000 kW @ 1.150 rpm
Leistung 20V M91L
10.000 kW @ 1.150 rpm (ICFN-rated)
Leistung 16V M71L
7.280 kW @ 1.150 rpm (ICFN-rated)
Leistung 16V M91L
8.000 kW @ 1.150 rpm (ICFN-rated)
Time Between Overhauls (TBO)
up to 96,000 operating hours
Schmieröl-Verbrauch
0,25% des Kraftstoffverbrauchs
Turbolader-Typ
Sequential (zweistufig, schaltbar), elektronisch gesteuert
Einspritzanlage
Common-Rail (elektronisch gesteuert), mit Zylinderschnellabschaltung
Zertifizierungen
ABS Naval Vessel Rules (NVR) - 1.500h Test @ 110% Nennleistung (2013); IMO TIER III (mit SCR)
configuration
V
rpm
1150
fuel type
MGO
technology
Tier III
power kw
7360
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Common failures & inspection points
Turbocharger wear due to contamination and lubricant problems: turbocharger blade erosion, turbine casing cracks, stuck variable geometry mechanism
Kühlmittel-Kompatibilität kritisch: Nur wasserlösliche Korrosionsinhibitoren erlaubt; Korrosions-Antifrostmittel VERBOTEN für Series 8000. Fehlerhafte Additive
Fuel high-pressure system failure risk: lack of oil changes destroys high-pressure pump bearings; fuel pressure loss due to injector system wear leads to
Oil cooler and gasketing leakage: worn seals on oil cooler and leaks at pumps endanger lubricating oil (contamination). Corrosion due to sa
Intake air filter system clogging: salt spray and dust particles reduce turbocharger efficiency; MTU specifies max. 25 inches water column intake pressure. Dirt
Type-general inspection and maintenance points for this equipment category — not model-specific.
Suppliers & Spare Parts
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Equipment Model #142945
· ✓ still in production
Wer liefert dieses Teil? 10 Betriebe im Verzeichnis · 12 aus Herstellerlisten
Alpentech Ship Chandlers LLC
Dubai, United Arab Emirates
ANLEGG OG MARINE SERVICE AS AS
Tananger, Norway
Compass Marine
United States
Diesel Engine Services and Repairs
Lithuania
Dpocgroup
Hellevoetsluis, Netherlands
Lubrafil BV
Barendrecht, Netherlands
MEYER RE GmbH
Papenburg, Germany
Mistral Marine Solutions
Switzerland
Pacific Power Group
El Cajon, United States
Wajax - Dorval
Dorval, Canada
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