Which outcome occurs in a diesel engine when fuel injector nozzle wear increases clearance excessively?

💡 Explanation

When injector nozzle clearance excessively increases, fuel atomization degrades because of lower fuel velocity exiting the enlarged orifice, promoting incomplete combustion and increasing unburned hydrocarbon emissions. Therefore emissions increase results, rather than compression ratio decrease, elevated temperatures, or boost pressure reduction which typically arise from other mechanical failures.

• Which risk increases for a turbocharged gasoline engine operating at high altitude with fixed ECU mapping?
• Which outcome occurs when rapid deceleration damages quadrature encoders in a robotic arm?
• Which control instability results when a robotic arm's accelerometer exceeds its rated bandwidth during rapid movements?
• Which outcome occurs when differential vapor pressure is increased within an R-134a refrigeration pump?
• Which outcome occurs when inadequate fuel atomization happens?
• Which outcome occurs from exceeding a commercial airliner's critical mach number during descent?