Main Engine 4-Stroke · Main Engines (4-Stroke)
The HiMSEN 6H54DF is a medium‑speed, 6‑cylinder inline dual‑fuel main engine delivering 8 400 kW at 450 rpm, designed for LNG/HFO operation with Tier III low‑NOx performance.
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| oil_change | 400-600 hours |
|---|---|
| fuel_filter_change | 1000-1500 hours |
| air_filter_change | 500-1000 hours |
| coolant_change | 2000-3000 hours |
| major_overhaul | 20000-25000 hours |
| cylinder_liner | 0.5-1.0 mm wear limit |
|---|---|
| piston_ring | 0.5-1.5 mm wear limit |
| valve_clearance | 0.2-0.5 mm wear limit |
| bearing_clearance | 0.1-0.3 mm wear limit |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyor typically checks for compliance with Tier III emissions regulations, proper maintenance and record-keeping, and adherence to manufacturer's recommendations for operation and maintenance.
Estimated lifetime: 25000-30000 hours
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