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.

• Suppose a transient voltage spike exceeds a Zener diode's reverse breakdown voltage. Which outcome relating to component failure occurs because of this?
• What outcome occurs when excessive cylinder head exhaust valve guide wear occurs?
• In a diesel engine, which outcome increases with excessive fuel injected per cycle against a given cylinder's piston?
• Which outcome occurs when a hydraulic actuator in heavy machinery experiences high-cycle fatigue?
• Which outcome occurs when an electro-hydraulic flow control valve experiences excessive coil inductance?
• When using a common NPN BJT amplifier at high frequencies, which effect becomes prominent due to internal transistor capacitances?