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← ScienceWhich risk increases when biodiesel fuel's cetane number diminishes?
A)Elevated NOx thermal decomposition rates
B)Reduced injector cavitation thresholds
C)Increased aldehyde radical formation rate✓
D)Lower brake specific fuel consumption
💡 Explanation
Increased aldehyde radical formation occurs because the lower cetane increases premix combustion rates, leading to incomplete combustion producing measurable levels of aldehydes; therefore, radical formation rate rises, rather than lower fuel consumption at the engine brake.
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