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TPL-C 77-C

Turbocharger · Turbochargers

Technical data from manufacturer or class sources · not yet verified by a person​‍​‍⁠‍‍‌‌​‍⁠‍​‌⁠⁠‌⁠​

The ABB Accelleron TPL‑C 77‑C is a high‑pressure marine turbocharger designed for two‑stroke common‑rail diesel engines up to 55 MW, delivering optimized boost pressure and fuel‑efficiency for large propulsion plants.

Specifications

Technical data.reference — unverified

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Frame Size77-C
Power max (kW)55000
Inspection

Inspector Detail ✓ verified

Common issues

  • Compressor wheel fouling due to poor air filtration
  • Turbine blade erosion from high-temperature exhaust gases
  • Bearing wear and vibration caused by improper lubrication or misalignment
  • Seal leakage resulting in oil contamination and performance degradation
  • Rotor imbalance leading to excessive vibration and reduced efficiency
  • Wastegate valve malfunction causing turbocharger overspeed
  • Oil leakages from turbocharger casing or connections

Inspection checklist

  • Visual inspection of compressor and turbine blades for fouling or damage
  • Check of bearing condition and vibration levels
  • Inspection of seal condition and oil leakage
  • Verification of proper lubrication and cooling system operation
  • Check of turbocharger mounting and alignment
  • Verification of wastegate valve operation and setting
  • Inspection of air filtration system condition and effectiveness
  • Check of exhaust gas temperature and pressure
  • Verification of turbocharger performance and efficiency

Service intervals

major_overhaul30000 to 40000 hours
bearing_replacement20000 to 30000 hours
seal_replacement10000 to 20000 hours
compressor_blade_cleaning5000 to 10000 hours

Typical wear limits

compressor_blade_tip_clearance1.5 to 2.5 mm
turbine_blade_tip_clearance2.0 to 3.0 mm
bearing_clearance0.05 to 0.15 mm
seal_wear0.5 to 1.5 mm

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

Critical spares

  • Compressor wheel
  • Turbine blade
  • Bearing set
  • Seal kit
  • Wastegate valve
  • Oil pump and filter
  • Turbocharger casing gasket

Safety

  • High-temperature exhaust gases and potential for fire
  • Rotating equipment and potential for injury from entanglement or contact
  • Oil leakages and potential for slip or fire hazard
  • Compressor surge and potential for equipment damage or injury

Class survey

The class surveyor will typically check the turbocharger's performance, efficiency, and condition, as well as verify compliance with manufacturer's recommendations and classification society rules, including proper maintenance, inspection, and testing records.

Estimated lifetime: 50000 to 70000 hours

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