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← TechnologyWhich process reduces efficiency when soot fouls diesel injectors?
A)Incomplete combustion✓
B)Reduced compression ratio
C)Early valve closure
D)Increased cylinder wall friction
💡 Explanation
Soot fouling prevents proper fuel atomization, causing incomplete combustion because it disrupts the spray pattern. Therefore the combustion efficiency drops, rather than only increasing cylinder friction, affecting valve timing or reducing compression because the injectors’ primary function is fuel delivery.
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