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Which outcome occurs when a diesel engine's high-pressure fuel injector nozzle experiences thermal distortion near its tip?

A)Increased fuel droplet size post-combustion
B)Elevated peak cylinder pressure during ignition
C)Decreased NOx emissions during regulation
D)Reduced exhaust smoke during acceleration

💡 Explanation

When a fuel injector nozzle tip distorts from heat, the fuel's atomization process is impaired because the intended spray pattern is altered, resulting in larger, less efficiently burning droplets. Therefore, increased fuel droplet size occurs, rather than other emissions changes, which are heavily dependent on other engine management parameters.

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