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Which risk increases when fuel injection timing fluctuations induce turbulence?

A)Reduced engine efficiency
B)Increased flame temperature
C)Elevation of exhaust NOx
D)Decreasing the valve overlap

💡 Explanation

Reduced efficiency occurs because turbulent mixing disrupts laminar combustion in the cylinders. The mechanism hindering complete combustion is turbulent diffusion; therefore, energy released decreases, rather than enhancing reactions, under ideal conditions.

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