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8V396-GS-60Hz

Auxiliary Engine (Generator Set) · Auxiliary Engines

Class-certified type (DNV register) · technical data sheet not yet verified
1,040 kWPower
8Cylinders
165 mmBore
185 mmStroke

The MTU 8V396‑GS‑60Hz is a medium‑speed V‑type 8‑cylinder diesel engine coupled to an integrated generator set, delivering roughly 1 040 kW (≈1 235 kVA) of electrical power at 60 Hz for shipboard auxiliary applications.

Specifications

Technical data.reference — unverified

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Bore165 mm (6.5 inches)
Stroke185 mm (7.3 inches)
16V Displacement63.3–71.45 liters
16V Continuous Power1580 kW @ 1800 rpm (genset); 2150 kW @ 2000 rpm (marine TE94)
16V Overload Capacity1740 kW
16V Dry Weight5510–7090 kg (engine only, no gearbox)
Compression Ratio14.5:1
AspirationTurbocharged + charge-air cooled (aftercooled)
Fuel SystemDirect injection, Bosch high-pressure injectors
Typical Power Range600–3650 kW across all cylinder variants
Power (kW)1040
Speed (rpm)1800
Fuel TypeMDO
ConfigurationV
Genset Output (kW)988
Genset Output (kVA)1235
Frequency (Hz)60
Inspection

Inspector Detail

Common issues

  • Injector wear causing unbalanced cylinder loads
  • Turbocharger degradation reducing rated output
  • Generator winding insulation degradation from heat and moisture
  • Voltage regulator (AVR) faults causing unstable output
  • Coolant leaks at heat exchanger or jacket water system
  • Vibration from worn engine/alternator mounts
  • Governor/speed control drift affecting frequency stability

Inspection checklist

  • Check exhaust temperature spread between cylinders
  • Inspect turbocharger condition and boost pressure
  • Test AVR and voltage/frequency regulation under load steps
  • Megger test generator winding insulation resistance
  • Inspect engine and alternator mounting/coupling for wear
  • Check lube oil and coolant condition/analysis trend
  • Verify governor response and load-sharing if paralleled with other gensets
  • Inspect fuel injection system for leaks or weeping
  • Test protective relays and circuit breaker trip functions

Service intervals

Lube oil and filter changetypically every 500-1000 hours - confirm against the MTU schedule for this rating
Fuel filter changetypically every 500 hours
Insulation resistance test on generatorevery 6-12 months
Valve clearance checktypically every 1000-2000 hours
Major genset overhaulcommonly in the 15000-25000 hour range for this class, duty-dependent

Typical wear limits

Generator winding insulation resistancehealthy readings for this voltage class are typically in the hundreds of megohms range when dry - trend against the machine's own baseline and the generator manufacturer's stated minimum rather than a single generic number
Turbocharger shaft radial/axial playtypically a few tenths of a millimetre for this turbocharger frame size - confirm against the manufacturer/turbocharger repair kit limits

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

  • Fuel injectors (order against engine serial number and rating - no generic part number)
  • AVR (automatic voltage regulator) unit
  • Turbocharger repair kit
  • Generator bearings
  • Coolant pump
  • Lube oil and fuel filter elements (consumables)
  • Engine/alternator flexible coupling

Safety

  • Electrical hazard at generator terminals and switchboard - lock out/tag out before work
  • Crankcase explosion risk - verify relief valves and monitoring are functional
  • Hot exhaust and turbocharger surfaces
  • Arc flash risk during live switchboard work

Class survey

Class typically requires periodic load testing, insulation resistance records, and protective relay/breaker testing for auxiliary generators; Continuous Survey Machinery arrangements will check documented running hours and maintenance history against the approved schedule.

Estimated lifetime: Auxiliary gensets of this power/speed class commonly run 20,000-30,000 hours between major overhauls under typical duty cycles, with total service life beyond 50,000 hours achievable given proper overhaul intervals.

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