OceanSphereENGINES

8H35/40DF

Main Engine 4-Stroke · Main Engines (4-Stroke)

Technical data from manufacturer or class sources · not yet verified by a person​‍​‍⁠‍​​​​‍‌‍​‌​‌‍‍⁠
4,480 kWPower
8Cylinders
350 mmBore
400 mmStroke

The HiMSEN 8H35/40DF is an eight‑cylinder, L‑shaped, medium‑speed (720 rpm) marine main engine delivering 4 480 kW and capable of running on both LNG and HFO, offering dual‑fuel flexibility with IMO Tier III NOx compliance.

Specifications

Technical data.reference — unverified

Do you have the manufacturer datasheet for this model? Send it with the enquiry form — we check it and name the source.

Leistung pro Zylinder1250 kW
SFOC (100% MCR)177,0 g/kWh
SFOC (85% MCR)174,0 g/kWh
Trockengewicht H46/60V193-260 Tonnen (je nach Zylinderzahl)
Verdichtungsverhältnis17:1 (HiMSEN-Familie)
Max. Verbrennungsdruck200 bar
VentilverstellerEnhanced Miller timing für NOx-Compliance
TurboladerNeue Generation mit höherer Effizienz
ConfigurationL
Speed (rpm)720
Fuel TypeDual-Fuel LNG/HFO
TechnologyDual-Fuel CR
Power (kW)4480
Inspection

Inspector Detail

Common issues

  • Cylinder cover wear and surface corrosion
  • Fuel system leaks and contamination
  • Dual-fuel system control issues
  • Crankshaft and camshaft wear
  • Piston ring and cylinder liner wear
  • Exhaust valve and seat wear
  • Turbocharger fouling and wear

Inspection checklist

  • Cylinder head and valve condition
  • Piston and ring condition
  • Crankshaft and camshaft condition
  • Fuel system leaks and contamination
  • Dual-fuel system control and operation
  • Exhaust system condition
  • Turbocharger condition and performance
  • Lubrication system condition and performance
  • Cooling system condition and performance

Service intervals

itemevery 1000-2000 hours for routine maintenance, every 5000-10000 hours for intermediate overhaul, and every 20000-30000 hours for major overhaul

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Typical wear limits

cylinder_liner0.5-1.0 mm wear limit
piston_ring0.5-1.5 mm wear limit
crankshaft_journal0.1-0.5 mm wear limit
camshaft_journal0.1-0.5 mm wear limit

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Cylinder liners
  • Piston rings
  • Valve seats and guides
  • Turbocharger components
  • Fuel injectors
  • Crankshaft and camshaft bearings
  • Dual-fuel system components

Safety

  • Fuel system leaks and fire risk
  • Exhaust system leaks and gas risk
  • Crankcase explosion risk due to oil mist and ignition sources

Class survey

Class surveyor typically checks for compliance with IMO Tier III emissions regulations, verifies proper operation of dual-fuel system, and inspects for signs of wear and corrosion on critical components

Estimated lifetime: 30000-50000 hours before major overhaul

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