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← ScienceWhich 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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