OceanSphereFree accountLog inDEENPL
OceanSphereENGINES
Request a part
Library› Engine Room› Main Engines (2-Stroke)› Main Engine 2-Stroke› MAN Energy Solutions 7G80ME-C9.5
MAN Energy Solutions

7G80ME-C9.5

Main Engine 2-Stroke · Main Engines (2-Stroke)

Technical data from manufacturer or class sources · not yet verified by a person
34,930 kWPower
7Cylinders
800 mmBore
3,720 mmStroke
78 rpmMCR RPM
1,200,000 kgWeight

The MAN 7G80ME-C9.5 is a 7‑cylinder, low‑speed 2‑stroke main propulsion engine delivering up to 34,930 kW at 78 rpm, distinguished by its hydraulic valve actuation and advanced electronic control.

Inspection

Inspector Detail ✓ verified

Designation decoded

7 = Zylinderzahl, G = Ultra-Long-Stroke, 80 = Bohrung 800 mm, ME = elektronisch gesteuert, C = Compact, 9.5 = Engine Mark. Hinweis: Die gelieferten Specs zeigen Hub 3720 mm — das ist ungewöhnlich für G80 (typisch 3450 mm); möglicherweise Daten-Anomalie.

Background

Die 7G80ME-C9.5 ist ein Hochleistungsmotor für die größten Container- und Tankschiffe. Mark 9.5 mit MEP 21 bar. 7 Zylinder bei 800 mm Bore für >15.000 TEU oder VLCCs. Die gelieferten Specs (Hub 3720 mm) weichen vom typischen G80-Hub (3450 mm) ab.

Calculated metrics

Stroke to bore ratio4.65
Mean Effective Pressure (bar)21

Inspector checklist

Brennstoffsystem
  • 7 Injektoren: 800 mm Bore — Spray, Cat-Fines
  • Fuel-System: Dimensionierung für 7 große Zylinder
  • ME Timing: EICU Mark 9.5
Laufzeug & Tribologie
  • Ratio 4.65 (laut Specs): Extreme Seitenkräfte bei 800 mm — Guide-Shoes aller 7 höchste Priorität
  • Laufbuchsen: 800 mm, große Kontaktfläche
  • Zylinderöl: Alpha Lubricator
Steuerung & Hydraulik
  • 7 große HCUs Mark 9.5: Leckrate, Software-Update?
  • EICU: Diagnostik
  • Hydrauliköl: Reinheit
Abgassystem
  • TC (2-3x): Matching, Reinigung
  • Abgaskessel
  • Spülluft-Receiver
Fundament
  • 7G80: Schwerster Motor — Deflection Pflicht
  • Tanktop: NDT
  • Schwingungsdämpfer

Logbook reference values

ParameterExpectedDeviation means
Abgastemperatur nach Zylinder305-370 °C>20 °C → Einspritzung
P-max±5 bar (Mark 9.5)Timing
MEP~21 barAbweichung → Leistung
Kurbelwellen-Deflectiongemäß MAN G80 7-ZylÜberschreitung → Klasse
Guide-Shoe Temp45-60 °C>65 °C → sofort

Common Failure Modes

  • Guide-Shoe-Verschleiß bei 7G80

    Symptoms: Klopfen, Temperatur

    Causes: Extreme Kräfte bei 800 mm + hohem Ratio

    Preventive: Spiel alle 8000 Bh; alle 7 systematisch

  • Cat-Fine-Schäden

    Symptoms: Liner-Verschleiß >80k € pro Stück

    Causes: Cat-Fines

    Preventive: Separator maximal

  • Fundament bei 7G80

    Symptoms: Deflection, Alignment

    Causes: Schwerster 7-Zyl-Motor

    Preventive: Deflection bei Beladung; NDT Tanktop

Expert tips

  • 7G80 Mark 9.5: Hochleistungsmotor, MEP 21 bar gut ausgelastet. EICU-Update auf 9.6 kann Effizienz und Diagnostik verbessern.
  • Bei 800 mm Bore und 7 Zylindern: Motor >700 t. Fundament-Zustand ist Hauptinspektionspunkt neben Guide-Shoes.
  • Cat-Fine-Kosten bei 7x 800 mm Liner: >560k € potentieller Totalschaden. Separator-Effizienz = wirtschaftliches Überleben.

Related components

  • Turbolader (2-3x)
  • Separator — existenziell
  • Guide-Shoes — alle 7, höchste Priorität
  • Fundament/Tanktop
  • EICU — Update?

Classification & regulatory

IMO Tier II (Mark 9.5). MARPOL Annex VI. EEXI/CII. Tier III Nachrüstung möglich.

Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.

Documentation

Manuals

Need this part?

Request a quote for this model.

Free of charge — send us your request for MAN Energy Solutions equipment. Our team checks it and replies by e-mail.

Makers and authorised dealers rarely quote marine equipment without the vessel. With these details we can check availability and prices faster; without them we may have to ask first, which can cost a few days. If you cannot share the vessel, a photo of the equipment’s rating plate does the same job — send it as a reply to our confirmation e-mail.

Your contact details are not published. No account required.
Related models

Also in Main Engine 2-Stroke.

Other models of the same equipment type, MAN Energy Solutions first.

MAN Energy Solutions
10G50ME-C9.6
MAN Energy Solutions
10G50ME-C9.6-GI
MAN Energy Solutions
10G80ME-C9.5
MAN Energy Solutions
10G80ME-C9.5-GA
MAN Energy Solutions
10G80ME-C9.5-GI
MAN Energy Solutions
10G80ME-C9.5-LGI
MAN Energy Solutions
10G90ME-C10.5
MAN Energy Solutions
10G95ME-C10.5
MAN Energy Solutions
10G95ME-C10.5-GI
MAN Energy Solutions
10G95ME-C10.5-LGI
By manufacturer MAN Energy SolutionsWinGDSulzerWärtsiläMitsubishiElectro-Motive DieselHyundaiDoosanHudong-ZhonghuaJapan Engine CorporationAkasaka Diesel (Mitsubishi UEC licensed)National Railway EquipmentHSD EngineKawasakiProgress Rail Locomotive, Inc.All manufacturersSpare parts by equipmentNew here? Create a free account Can't read the plate? Try the nameplate scanner All MAN Energy Solutions models More like 7G80ME-C9.5
Would you like to know more?

A person reads every request and replies by e-mail.

Tell us what you need for this MAN Energy Solutions 7G80ME-C9.5 — a part, a service call, a second opinion. Are you MAN Energy Solutions? Claim this brand page.

Request a part for this modelRequest service

Service engineer? Write the day report for this 7G80ME-C9.5 in OceanSphere Work — photos, hours and parts, as a PDF for the owner. Try it free for 14 days →

Frequently asked

Three things people ask first.

Is this model's data free?

Yes. Specifications, documents and service notes for this model are readable without an account. An account adds saved searches and requests, nothing is taken away.

Can you find a part for this exact model?

Yes. Tell us the manufacturer, the model and what you need — a person reads every request and replies by e-mail.

The specifications look wrong — what now?

Send us the nameplate or the correct value. We check it against the manufacturer datasheet or class-society record and update the page.