Which phenomenon results when high-pressure fuel injectors in a diesel engine experience dribble after main injection pulse?

💡 Explanation

When fuel injectors dribble, incomplete combustion occurs because the fuel fails to atomize properly at the end of the injection pulse, creating rich pockets that contribute to soot formation. Therefore particulate matter increases, rather than reduced NOx, improved efficiency, or reduced knocking which require optimized fuel-air mixtures.

• Which risk increases in a hydraulic system when an accumulator is improperly pre-charged with gas?
• Which outcome occurs when a high-impedance ground fault develops within a three-phase electrical distribution circuit?
• Which outcome of compromised concrete pour timing during post-tensioning?
• Which outcome is most likely in a diesel engine when fuel cetane number is significantly below specification?
• Which action minimizes 'stick-slip' behavior in slow-moving hydraulic actuators?
• Which risk significantly escalates when three-phase power transformer breakers are tripped sequentially in a multi-transformer distribution network?