OceanSphereENGINES

8LLH41L

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

Technical data from manufacturer or class sources · not yet verified by a person​‍​‍⁠‍​‌‌‍‍‌​⁠‍⁠‌‌​‌
5,960 kWPower
8Cylinders
410 mmBore
550 mmStroke

The Hanshin 8LLH41L is an 8‑cylinder, inline 4‑stroke marine diesel engine delivering about 5 960 kW at 525 rpm, designed for mid‑speed propulsion with dual‑fuel capability (HFO/MGO).

Specifications

Technical data.reference — unverified

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ConfigurationL
Speed (rpm)525
Fuel TypeHFO/MGO
TechnologyMechanical
Power (kW)5960
Inspection

Inspector Detail ✓ verified

Common issues

  • Excessive cylinder liner wear due to poor fuel quality or inadequate maintenance
  • Charge air leakage causing reduced engine performance and increased fuel consumption
  • Main bearing wear due to misalignment or inadequate lubrication
  • Fuel pump malfunction resulting in poor fuel injection and engine performance
  • Crankshaft deflection due to misalignment or worn-out main bearings
  • Turbocharger fouling or failure due to poor maintenance or dirty charge air
  • Exhaust valve leakage or damage due to overheating or poor maintenance

Inspection checklist

  • Cylinder head and valve condition
  • Cylinder liner and piston ring condition
  • Main bearing and crankshaft condition
  • Fuel pump and injector condition
  • Turbocharger condition and performance
  • Charge air system condition and performance
  • Lubrication system condition and oil quality
  • Cooling system condition and performance
  • Exhaust system condition and performance

Service intervals

oil_change1000-1500 hours
fuel_filter_change500-1000 hours
air_filter_change1000-2000 hours
cylinder_liner_overhaul12000-18000 hours
main_bearing_overhaul20000-30000 hours

Typical wear limits

cylinder_liner0.5-1.0 mm wear limit
piston_ring0.5-1.0 mm wear limit
main_bearing0.1-0.5 mm wear limit
crankshaft0.1-0.5 mm deflection limit

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

Critical spares

  • Cylinder liners
  • Piston rings
  • Main bearings
  • Fuel pumps
  • Injectors
  • Turbocharger components
  • Exhaust valves

Safety

  • Risk of scalding from hot surfaces or fluids
  • Risk of injury from moving parts or rotating equipment
  • Risk of explosion or fire from fuel or oil leaks
  • Risk of asphyxiation from inadequate ventilation

Class survey

Class surveyor typically checks for compliance with classification society rules and regulations, including verification of maintenance records, inspection of critical components, and review of safety equipment and procedures

Estimated lifetime: 30000-40000 hours

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