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← TechnologyWhich outcome arises when incorrect fuel pressure affects a common rail diesel injection system?
A)Elevated exhaust gas recirculation rate
B)Increased particulate matter emissions✓
C)Advanced ignition timing with knocking
D)Decreased cylinder compression ratio
💡 Explanation
When fuel pressure deviates, the fuel atomization process becomes inefficient because the fuel volume injected is disrupted promoting incomplete combustion and soot formation. Therefore increased particulate matter emission results rather than altered EGR, advanced timing or reduced compression, which stem from different engine malfunctions.
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