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← TechnologyWhich risk increases significantly with excessive injector dwell time in modern gasoline direct injection (GDI) engines?
A)Fuel film formation on piston✓
B)Incorrect valve timing occurrence
C)Catalytic converter overcooling
D)Crankshaft bearing lubrication failure
💡 Explanation
Fuel film formation risk increases due to injector over-energizing causing incomplete atomization which then floods areas rather than combusting completely because the excessive dwell allows fuel droplets to coalesce; therefore a fuel film is the outcome, rather than complete combustion.
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