Main Engine 4-Stroke · Main Engines (4-Stroke)
The Himsen H9H32/40 is a 9‑cylinder, L‑configuration medium‑speed marine diesel engine delivering 4 320 kW at 720 rpm, featuring common‑rail fuel injection and Miller‑cycle turbocharging for high power density and fuel flexibility.
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| item | every 1000-2000 hours for routine maintenance, every 5000-10000 hours for major overhauls |
|---|
| cylinder_liner | 0.5-1.0 mm wear limit |
|---|---|
| piston_ring | 0.5-1.0 mm wear limit |
| exhaust_valve | 0.5-1.0 mm wear limit |
| crankshaft | 0.1-0.5 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 manufacturer's maintenance instructions, proper function of safety devices, and condition of critical components such as cylinder liners, piston rings, and exhaust valves
Estimated lifetime: 20000-40000 hours before major overhaul
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