X52
The WinGD X52 is a low‑speed, two‑stroke marine main engine delivering up to ~12 MW per cylinder block, known for high power density and fuel flexibility across diesel and dual‑fuel (LNG, ammonia) options.
Engine Specifications
Inspector Detail
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Designation decoded
X stands for WinGD Generation X, 52 for 520 mm bore. Without the B suffix: standard installation height (not the compact version).
Background
The WinGD X52 is a medium-sized two-stroke slow-speed engine with 520 mm bore. The X series with common-rail injection and W.I.S.E. control offers improved efficiency and lower emissions compared to the preceding RT-flex generation. Typical application on Handysize/Handymax bulkers and product tankers. The 520 mm bore is WinGD-specific (MAN uses 500 mm).
Calculated metrics
Inspector checklist
- Cylinder liners: 520 mm bore — scavenge port inspection every 4,000 h, observe WinGD-specific liner geometry
- Piston rings: WinGD ring configuration, butt clearances per manufacturer specification
- Crosshead bearings: Temperature monitoring, bearing clearances at docking
- Common rail: Rail pressure, pressure stability, high-pressure pumps — CR system is more sensitive to fuel quality than jerk pumps
- W.I.S.E.: Software version, diagnostic data, variable injection profiles
- Injection valves: Nozzle condition, spray pattern
- Exhaust valve: Hydraulic actuation, lift and closing speed
- Fuel fine filter upstream of common rail: CRITICAL — catfines destroy CR components
- Purifier performance and fuel quality
- Fuel preheating for HFO
- Stuffing boxes: Drainage quantities
- Exhaust valve: Valve seat, valve rotation
- Scavenge air receiver: Drainage, fire risk
- Turbocharger: Cleaning intervals, vibration
- Charge air cooler: Differential pressure
- Auxiliary blower: Low-load
Logbook reference values
| Parameter | Expected | Deviation means |
|---|---|---|
| Exhaust gas temperature after cylinder | 340-415°C at MCR | >20°C spread → CR injection problem |
| Common-rail pressure | 800-1000 bar | Drop → pump or rail leakage |
| Pmax per cylinder | Per shop test ±3 bar | Spread >5 bar |
| Scavenge air pressure | 2.5-3.2 bar abs at MCR | Too low → turbocharger |
| Cylinder oil feed rate | 0.7-1.0 g/kWh | Adjust to BN |
Common Failure Modes
Expert tips
- 💡 520 mm is WinGD-specific (MAN has 500 mm) — liners, pistons and rings are NOT interchangeable with MAN parts of similar approximate size
- 💡 Common-rail advantage: Variable injection profiles enable emissions optimization — during inspection check whether the W.I.S.E. software is up to date and uses optimal profiles
- 💡 WinGD recommends stricter fuel fine filtration than MAN — check filter bypass valves for correct function and ensure they are not left permanently open
Related components
Classification & regulatory
IMO Tier II. Tier III with SCR/EGR. WinGD X series optimized for EEDI Phase 2/3.
Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Visual inspection of GAV sensor wiring, sensor response test at dock and sea trial, check sensor connector corrosion
Pressure relief valve setting verification, fuel supply isolation valve function check, regulator response test under load variation
Cross-check installed turbocharger serial number against commissioning document, scavenge cooler type plate vs contract specifications
Check lube oil supply pressure before start, inspect turbo bearing condition at overhaul, verify pre-lubrication startup sequence in manual
Type-general inspection and maintenance points for this equipment category — not model-specific.
Service & Maintenance
Follow WinGD maintenance schedule. Cylinder condition checks commonly around 4000-8000 h; piston overhauls condition-based around 16000-24000 h.
Suppliers & Spare Parts
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Manuals
- datasheet
- project_guide