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Which outcome occurs when an intercooler fails on a turbocharged diesel engine?

A)Increased exhaust emissions of NOx
B)Reduced cylinder pressure during combustion
C)Elevated fuel viscosity within the injectors
D)Premature detonation within the cylinders

💡 Explanation

When an intercooler fails, intake air becomes hotter because the heat exchange process is circumvented. Consequently, higher combustion temperatures lead to increased formation of NOx. Therefore, a rise in emissions occurs, rather than reduced cylinder pressure, fuel viscosity increase, or detonation, which depend on other factors.

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