Which outcome results from fuel injector dribble in a turbodiesel?

💡 Explanation

Increased unburned hydrocarbon emissions result from nozzle passage wetting, because uncontrolled late combustion, via fuel dribble, prevents complete oxidation; therefore, emissions increase rather than optimal combustion, because the mixture stoichiometry is compromised in localized areas.

• During an aircraft descent, which consequence results when the elevator trim 'runaway' initiates uncommanded movement?
• Which outcome occurs when moisture enters a refrigeration system's sealed capillary tube?
• Which outcome occurs when excessive current creates pathways in transformer insulation?
• Within injection molding, which consequence results when melt temperature tolerances substantially exceed specifications?
• Which outcome results when an engine's fuel injector nozzle gets coked due to excessive heat and unburnt fuel?
• Which outcome occurs when desiccant filter drier saturates in an HVAC refrigerant loop?