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← TechnologyWhich outcome occurs when localized overheating in a pistons's 'hot spot' zone occurs during rapid engine acceleration?
A)Piston ring blow-by increases rapidly✓
B)Intercooler efficiency sharply increases
C)Valve float significantly reduces power
D)Catalytic converter light-off quickens
💡 Explanation
Increased blow-by happens because thermal expansion leads to reduced piston-cylinder clearance; this is known as thermal distortion. Therefore, increased blow-by prevails, rather than improved intercooler efficiency, since overheating degrades sealing performance, not enhances heat transfer.
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