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Which effect results when inadequate fuel atomization occurs inside a gasoline direct injection (GDI) engine cylinder?

A)Increased particulate matter emissions
B)Detonation due to pre-ignition
C)Excessive oil consumption from cylinder washdown
D)Valve float from decreased combustion pressure

💡 Explanation

When fuel atomization is inadequate, larger fuel droplets fail to fully combust, which increases production of particulate matter because of incomplete oxidation, raising exhaust emissions. Therefore particulate emissions increase, rather than detonation, oil consumption or valve float, which require dissimilar mechanisms and conditions.

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