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WinGD

6X35

Name: WinGD 6X35
Brand: WinGD
SKU: OSE-38731

The WinGD 6X35 is a low‑speed, two‑stroke marine diesel engine (six cylinders, 5.34 MW at 167 rpm) featuring electronic common‑rail fuel injection and the WiDE control system, designed for flexible speed operation and multi‑fuel capability.

5340.0 kW

Power

Engine Specifications

Cylinders

350 mm

Bore

1550 mm

Stroke

5,340 kW

MCR Power

167.0 rpm

MCR RPM

2-stroke

Stroke Type

Family: WIN-GD X · Tier: IMO Tier II · Fuel: HFO, VLSFO, MDO

Inspector Detail ✓ verified

▸

Designation decoded

WinGD 6X35 – 6-cylinder two-stroke slow-speed engine, bore 350 mm, stroke 1550 mm, fully electronic common-rail control (camshaft-less). Base version of the X35 series. Compact engine for smaller merchant vessels and feeder container ships.

Background

The X35 is the smallest engine in the WinGD X series and is aimed at handysize bulkers, small container ships and general cargo ships. With a bore of 350 mm it offers a power-efficient solution in the lower power segment of two-stroke slow-speed engines. The 6-cylinder configuration offers good running smoothness and balanced inertia forces. The fully electronic control via UNIC enables flexible load profiles and optimized emissions.

Calculated metrics

Stroke To Bore Ratio

4.43

Inspector checklist

Logbook reference values

Parameter	Expected	Deviation means
Common-Rail-Druck	600–900 bar (lastabhängig)	Pressure deviation indicates pump performance loss or injector leakage
Pmax pro Zylinder	Gemäß WinGD-Testprotokoll ±3 bar	Deviation indicates injection or compression irregularities
Exhaust gas temperature per cylinder	Mittelwert ±15 °C	Individual cylinder deviation indicates injector problem or valve leakage
Zylinderöl-Dosierrate	0.6–1.0 g/kWh (depending on fuel sulfur content)	Too low rate increases wear, too high rate causes deposits and increased costs
Scavenge air temperature after cooler	35–45 °C	Elevated temperature indicates clogged scavenge air cooler or cooling water problem

Common Failure Modes

Injector coking and nozzle wear

Symptoms: ['Ungleichmäßige Abgastemperaturen', 'Erhöhter Kraftstoffverbrauch', 'Visible smoke at part load']

Causes: Minderwertige Kraftstoffaufbereitung, Überschreitung der Wartungsintervalle, Thermische Belastung der Düsenspitze

Preventive: Replace injectors at prescribed intervals; monitor fuel quality and treatment; perform pressure curve measurement regularly

Auslassventilschäden

Symptoms: ['Kompressionsverlust', 'Erhöhte Abgastemperatur', 'Blowby-Spuren am Ventilgehäuse']

Causes: Heißkorrosion (Vanadium/Natrium im HFO), Rotocap-Versagen, Unzureichende Ventilkühlung

Preventive: Valve inspection according to WinGD interval; Rotocap rotation check at each cylinder overhaul; monitor cooling water quality

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Related components

T u r b o c h a r g e r ( i n p a r t i c u l a r w i t h s i n g l e - t u r b o a r r a n g e m e n t ) , s c a v e n g e a i r c o o l e r , f u e l s e p a r a t o r s a n d f i l t e r s , s t a r t i n g a i r v a l v e s , c r a n k s h a f t b e a r i n g s ( d e f l e c t i o n m e a s u r e m e n t ) , b e d p l a t e b o l t s

Classification & regulatory

IMO Tier II in standard operation. Tier III achievable by means of iCER or external SCR plant. EIAPP Certificate and NOx Technical File must be provided. MARPOL Annex VI sulfur limit values to be observed.

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

Other Cylinder Configurations 50

Components & Design

Component data being added…

Technical Data

Bore X35-B: 350 mm; X40-B: 400 mm

Stroke X35-B: 1550 mm; X40-B: 1770 mm

Stroke/Bore Ratio 4.43 (both models)

Power Range X35-B: 2,450–6,960 kW; X40-B: 3,250–9,080 kW

RPM Range X35-B: 118–167 rpm; X40-B: 104–146 rpm

Mean Effective Pressure (MEP R1) X35-B: not verifiable; X40-B: 21 bar

SFOC (Specific Fuel Oil Consumption) X35-B: ~175.8 g/kWh; X40-B: ~176.8 g/kWh (Tier II, Vollast)

Fuel Type Marine Diesel (HFO/MDO) - Single-Fuel; X40DF-Variante: LNG Dual-Fuel

Fuel Injection System Electronically Controlled Common Rail mit Zeit-gesteuerte Einspritzung

Emissions Compliance IMO Tier II/Tier III (SCR-Nachrüstung für Tier III)

Production Status Legacy (Produktion beendet, technische Unterstützung aktiv)

unified from engine model True

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Common failures & inspection points

Cylinder liner scuffing: Local welding and wear between piston ring and liner inner surface caused by inadequate lubrication or oil film breakdown

Visual inspection of liner for scratches, micro-welding and discoloration; check local surface roughness; hone liner or replace if necessary

wingd.com/media/odqa15kl/wingd-guid... www.cimac.com/cms/upload/workinggro...

Piston crown and ring groove wear: Surface stress, wear and cracks in piston crown and ring grooves require thickness measurements

Use thickness gauge (e.g. Fischer Dualscope MP0); compare with reference values from OM; inspect piston crown for thermal discoloration, cracks and deposits

wingd.com/media/odqa15kl/wingd-guid...

Fuel pressure anomalies and groove leakage: Excessive/insufficient pressure in common rail system and fuel leakage from injection lines

Check fuel pressure during operation (reference value at R1); monitor fuel return for leaks; observe inspection lines at injectors for leaks

wingd.com/media/ueqnlyk0/om_wingd-x...

Exhaust temperature irregularities with elevated gas concentration in piston underside: Asymmetrical or unexpected exhaust temperatures downstream of individual cyl

Perform continuous exhaust temperature monitoring per cylinder; initiate cylinder head inspections at temperature differences >30°C; check gas concentration in piston

Servo oil system leakage and FLV/fuel line tightness issues: pressure loss in servo hydraulic system and fuel leak at Fuel Line Valves

Monitor servo oil pressure and flow; visually inspect all fuel lines and valve connections and under pressure; monitor sight glasses

wingd.com/service-support/operation...

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

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Equipment Model #38731 · ✓ still in production