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← TechnologyWhich outcome occurs when rapid "fuel accumulation" coats a diesel EGR valve?
A)Charge air density increases greatly
B)Valve deposits restrict exhaust flow✓
C)Engine compression ratio reduces quickly
D)Cylinder wall lubrication improves instead
💡 Explanation
Exhaust Gas Recirculation valve fouling occurs because incomplete fuel combustion creates carbonaceous deposits; this process is known as EGR Valve Coking. Therefore, exhaust flow is progressively restricted, rather than alternate outcomes, under constant uncombusted fuel recirculation.
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