Dual-Fuel System (Gas Mode)
criticalParent: Emission Control
Components for this Group (4)
WIN-GD X-DF Gas Admission System
WIN-GD X-DF
· Supplier: WIN-GD
Common Failures:
- • Gas admission valve (GAV) seal leakage
- • Prechamber fouling
- • Gas/diesel mode changeover failure
- • Methane slip at low load
Service: Gas admission at 10-16 bar via scavenge ports. Pre-chamber with diesel pilot. Monitor methane slip.
Weight: 350.0 kg
W31 Pilot Fuel System (DF variant)
Wartsila Wartsila 31
· Supplier: Wartsila
Common Failures:
- • Pilot injector nozzle clogging
- • Pilot fuel quantity control drift
- • Pilot fuel pump seal leakage
Service: Micro-pilot diesel injection for gas mode ignition. Pilot fuel consumption <1% of total energy. Overhaul pilot injector at 8,000 hrs.
Weight: 35.0 kg
W31 Gas Admission Valve (GAV)
Wartsila Wartsila 31
· Supplier: Wartsila
Common Failures:
- • Valve seat wear causing gas leakage
- • Actuator response time degradation
- • Seal failure causing gas bypass
Service: Low-pressure gas admission valve per cylinder. Overhaul at 12,000 hrs. Leak test after every overhaul.
Weight: 18.0 kg
W31 Pre-Chamber Assembly (DF)
Wartsila Wartsila 31
· Supplier: Wartsila
Common Failures:
- • Pre-chamber fouling from incomplete combustion
- • Flame propagation failure at low load
- • Erosion of pre-chamber orifices
Service: Pre-chamber ensures stable ignition of lean gas-air mixture. Inspect at 8,000 hrs. Replace inserts at 16,000 hrs.
Weight: 8.0 kg