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← TechnologyWhich effect increases when injector back-leakage exceeds limits?
A)Fuel rail pressure oscillations increase✓
B)Volumetric combustion efficiency increases
C)Injector nozzle clogging probability decreases
D)Exhaust gas temperature decreases linearly
💡 Explanation
Excessive back-leakage in fuel injectors causes increased fuel pressure wave reflection; this happens via fluid compressibility. Because the Pressure Wave Reflection increases, fuel rail pressure oscillations also increase substantially, therefore leading to unstable combustion rather than improved dynamics observed from steady pressure regulation.
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