Main Engine 4-Stroke · Main Engines (4-Stroke)
The HiMSEN 7H46DF is a 7‑cylinder, inline, dual‑fuel (LNG/HFO) main engine delivering 8 015 kW at 500 rpm, designed for mid‑speed marine propulsion with flexible fuel options.
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| oil_change | 1000-1500 hours |
|---|---|
| fuel_filter_change | 250-500 hours |
| air_filter_change | 500-1000 hours |
| cylinder_liner_overhaul | 12000-15000 hours |
| major_overhaul | 30000-40000 hours |
| cylinder_liner | 0.5-1.0 mm wear |
|---|---|
| piston_ring | 0.5-1.5 mm wear |
| exhaust_valve | 0.5-1.0 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 for compliance with classification society rules and regulations, including fuel system, exhaust system, and safety equipment
Estimated lifetime: 40000-50000 hours
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