"> WinGD 6X62-B
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WinGD

6X62-B

The WinGD 6X62‑B is a high‑power, low‑speed 2‑stroke marine main engine with six large cylinders (620 mm bore, 2658 mm stroke) delivering up to 16 980 kW at 99 rpm, featuring WiDE digital control and optional dual‑fuel capability.

16980.0 kW
Power

Engine Specifications

6
Cylinders
620 mm
Bore
2658 mm
Stroke
16,980 kW
MCR Power
99.0 rpm
MCR RPM
2-stroke
Stroke Type
Family: WIN-GD X · Tier: IMO Tier II · Fuel: HFO, VLSFO, MDO

Inspector Detail

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Designation decoded

WinGD 6X62-B – 6-Zylinder-Zweitakt-Kreuzkopfmotor, Bohrung 620 mm, Hub 2658 mm, B-Version (verbesserte Variante), vollelektronisch ohne Nockenwelle

Background

The 6X62-B is the further developed B-variant of the X62 with improved specific fuel consumption and optimized emission performance. Fully electronic engine control via UNIC with common-rail injection and FlexCam. The B-version benefits from optimized combustion chamber design, improved piston ring configuration and software optimizations. 6-cylinder configuration with good vibration behavior. Delta Tuning and iCER available for Tier III compliance.

Calculated metrics

Stroke To Bore Ratio
4.29

Inspector checklist

Logbook reference values

Parameter Expected Deviation means
Zünddrücke (Pmax) Gemäß B-Version Shoptest-Protokoll ±5 bar Combustion anomaly, check fuel injection or compression
Abgastemperaturen Innerhalb ±20 °C vom Mittelwert Injector, valve or combustion problem
Zylinderschmierölverbrauch 0,5–0,8 g/kWh (B-Version optimiert) Wear at marked deviation upwards
Kompressionsdrücke According to manufacturer specification, uniformly across all cylinders Piston ring or exhaust valve leakage
Turboladerdrehzahl Gemäß Lastdiagramm Contamination or bearing damage
Spüllufttemperatur 35–50 °C after cooler (depending on seawater temperature) Charge air cooler contamination or cooling water problem

Common Failure Modes

Injektor-Nadelventil-Verklebung
Symptoms: ['Ungleichmäßiger Leerlauf', 'Erhöhte Rauchentwicklung', 'Zylindertemperatur-Abweichung']
Causes: Kraftstoffrückstände an der Nadel, Thermische Verformung, Fertigungstoleranzen
Preventive: Injector overhaul at manufacturer-compliant intervals, monitor fuel quality and temperature
Abgasventil-Spindelverkokung
Symptoms: ['Verzögertes Ventilschließen', 'Kompressionsdruckabfall', 'Erhöhte Abgastemperatur']
Causes: Verbrennungsrückstände am Ventilschaft, Unzureichende Ventildrehung, Falsche Kraftstoffaufbereitung
Preventive: Valve stem cleaning during overhaul, check Rotocap function, optimize fuel treatment
Kolbenkronen-Rissbildung
Symptoms: ['Blow-by-Zunahme', 'Temperaturanstieg', 'Metallteilchen im Spülluftkanal']
Causes: Thermische Ermüdung, Verbrennungsanomalien (Frühzündung), Materialfehler
Preventive: Kolbeninspektion gemäß Betriebsstundenplan, PMI-Überwachung zur Früherkennung anomaler Verbrennungsdrücke
Steuerluftsystem-Leckage
Symptoms: ['Verzögerte Abgasventilbetätigung', 'Fehlermeldungen im UNIC', 'Druckluftverbrauch erhöht']
Causes: Dichtungsverschleiß, Rohrleitung-Korrosion, Magnetventildefekt
Preventive: Regelmäßige Leckageprüfung des Steuerluftsystems, Magnetventile in vorgeschriebenen Intervallen tauschen

Expert tips

  • 💡 B-version has modified piston ring specifications compared to standard version – when ordering spare parts, use B part numbers without fail
  • 💡 iCER operation requires special attention to scavenge air quality and wash water system – check corrosion in scavenge air duct
  • 💡 When switching between HFO and VLSFO, verify BN adjustment of cylinder oil via the ACC system

Related components

Turbolader (inkl. Wasserwaschsystem) Charge air cooler (air and water side) Kraftstoffaufbereitungsanlage Exhaust gas boiler and economizer Main bearings and connecting rod bearings Control air supply and solenoid valves iCER-Komponenten (falls installiert)

Classification & regulatory

Tier II compliant in standard operation. Tier III via iCER (integrated exhaust gas recirculation) or SCR catalyst. Note EEXI/CII relevance: B-version offers improved energy efficiency. For fuel switching (HFO/VLSFO/MGO), follow transition procedures according to manufacturer specification.

Reference content for inspector orientation. Always verify against manufacturer's manual, latest service letters and class society requirements.

Other Cylinder Configurations 50

5X35
5 cyl · 4,450 kW
5X35-B
5 cyl · 4,700 kW
5X40
5 cyl · 5,600 kW
5X40-B
5 cyl · 5,900 kW
5X52
5 cyl · 9,400 kW
5X52-B
5 cyl · 9,950 kW
5X62
5 cyl · 13,400 kW
5X62-B
5 cyl · 14,150 kW
5X72
5 cyl · 18,300 kW
5X72-B
5 cyl · 19,350 kW
5X82
5 cyl · 24,250 kW
5X82-B
5 cyl · 25,600 kW
5X92
5 cyl · 31,950 kW
5X92-B
5 cyl · 33,700 kW
6X35
6 cyl · 5,340 kW
6X35-B
6 cyl · 5,640 kW
6X40
6 cyl · 6,720 kW
6X40-B
6 cyl · 7,080 kW
6X52
6 cyl · 11,280 kW
6X52-B
6 cyl · 11,940 kW
6X62
6 cyl · 16,080 kW
6X72
6 cyl · 21,960 kW
6X72-B
6 cyl · 23,220 kW
6X82
6 cyl · 32,280 kW
6X82-B
6 cyl · 30,720 kW
6X92
6 cyl · 38,340 kW
6X92-B
6 cyl · 40,440 kW
7X35
7 cyl · 6,230 kW
7X35-B
7 cyl · 6,580 kW
7X40
7 cyl · 7,840 kW
7X40-B
7 cyl · 8,260 kW
7X52
7 cyl · 13,160 kW
7X52-B
7 cyl · 13,930 kW
7X62
7 cyl · 18,760 kW
7X62-B
7 cyl · 19,810 kW
7X72
7 cyl · 25,620 kW
7X72-B
7 cyl · 27,090 kW
7X82
7 cyl · 33,950 kW
7X82-B
7 cyl · 35,840 kW
7X92
7 cyl · 44,730 kW
7X92-B
7 cyl · 47,180 kW
8X35
8 cyl · 7,120 kW
8X35-B
8 cyl · 7,520 kW
8X40
8 cyl · 8,960 kW
8X40-B
8 cyl · 9,440 kW
8X52
8 cyl · 15,040 kW
8X52-B
8 cyl · 15,920 kW
8X62
8 cyl · 21,440 kW
8X62-B
8 cyl · 22,640 kW
8X72
8 cyl · 29,280 kW

Components & Design

Component data being added…

Technical Data

Bore diameter 620 mm (verified: WinGD official specs)
Max power per cylinder (S2.0 @108 rpm) 2,110 kW/cyl (WinGD X62DF-S2.0 product page)
Max power per cylinder (2.1 @103 rpm) ~2,385 kW/cyl (derived from 8-cyl config 19,080 kW)
SFOC diesel mode (with VCR option) 165.8-167.8 g/kWh (WinGD X62DF-2.1 page)
Fuel consumption reduction (diesel VCR) up to 5% (WinGD X62DF-2.1 specs)
Fuel consumption reduction (gas mode) up to 3% energy (iCER technology)
Methane slip reduction up to 50% (iCER technology)
Emissions standard IMO Tier III without SCR in gas mode (X62DF-2.1)
Stroke/Bore ratio (standard) L/D = 4.29
Injection system Common-rail + Intelligent Control by Exhaust Recycling (iCER)
Compression ratio (with VCR option) Dynamically variable per fuel type and load
unified from engine model True

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Common failures & inspection points

Fuel valve carbon deposits / fuel system blockages in low-load multi-fuel operation

Inspect fuel valve nozzle spray pattern during top-overhaul; monitor differential pressure across fuel filter; verify fuel heating system temperature compliance

Piston crown thermal cracking and top-land spalling under extreme load or fuel quality variations

Measure piston crown surface condition using borescope; check for micro-cracks in top land; examine combustion bowl geometry; compare cylinder-to-cylinder pressure readings

Cylinder liner scuffing/scoring in dust-contaminated conditions or with inadequate air filtration

Perform liner diameter measurement service at each overhaul; document wear rate trending; inspect piston rings for abnormal wear patterns; check air inlet filter condition

Turbocharger surge and cavitation erosion in unsteady loading (e.g., dynamic positioning vessels)

Monitor turbocharger bearing temperatures during mode transitions (gas-to-diesel); inspect turbocharger for cavitation pitting on impeller; verify surge line compliance in operational envelope

Fuel gas supply system pressure regulation instability (iGPR unit hysteresis) under rapid load changes

Perform fuel gas system pressure step-response test during commissioning; verify regulator response time <500ms per specification; conduct annual gas line tightness test with ultrasonic detection

Type-general inspection and maintenance points for this equipment category — not model-specific.

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Equipment Model #38738 · ✓ still in production