Main Engine 4-Stroke · Main Engines (4-Stroke)
The Niigata 9L6L34HLX is a 9‑cylinder, inline (L‑configuration) medium‑speed main engine delivering 5 220 kW at 600 rpm, featuring common‑rail fuel injection to meet IMO Tier III emissions.
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| oil_change | 1000-1500 hours |
|---|---|
| fuel_filter_change | 500-1000 hours |
| air_filter_change | 1000-2000 hours |
| injector_overhaul | 5000-10000 hours |
| valve_overhaul | 10000-20000 hours |
| cylinder_liner | 0.5-1.0 mm wear limit |
|---|---|
| piston_ring | 0.5-1.5 mm wear limit |
| crankshaft_bearing | 0.1-0.5 mm wear limit |
| camshaft_bearing | 0.1-0.5 mm wear limit |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
The class surveyor will typically check the condition and performance of the main engine, including the fuel system, turbocharger, and cooling system, as well as the maintenance records and spare parts inventory to ensure compliance with regulatory requirements and classification society rules.
Estimated lifetime: 30000-50000 hours
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