Main Engine 4-Stroke · Main Engines (4-Stroke)
The HiMSEN 7H54DF is a 7‑cylinder inline, medium‑speed main engine delivering 9 800 kW at 450 rpm, featuring Dual‑Fuel (LNG/HFO) Tier III technology for ultra‑low NOx emissions.
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| oil_change | 1000-1500 hours |
|---|---|
| fuel_filter_replacement | 500-1000 hours |
| air_filter_replacement | 1000-2000 hours |
| cylinder_liner_replacement | 12000-18000 hours |
| piston_ring_replacement | 12000-18000 hours |
| cylinder_liner | 0.5-1.0 mm wear |
|---|---|
| piston_ring | 0.5-1.0 mm wear |
| exhaust_valve | 0.1-0.5 mm wear |
| crankshaft_bearing | 0.1-0.5 mm wear |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyor typically checks engine performance, emissions, and safety equipment, including LNG fuel system, HFO fuel system, and exhaust system condition
Estimated lifetime: 30000-40000 hours
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