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← ScienceWhich outcome occurs when reciprocating engine cylinder head temperature significantly exceeds design limits during operation at maximum load?
A)Detonation from pre-ignition of fuel✓
B)Oil thickening from increased viscosity
C)Bearing failure due to reduced clearance
D)Piston seizure from increased expansion
💡 Explanation
When cylinder head temperature exceeds design limits, hot spots form, initiating uncontrolled auto-ignition before the spark plug fires, which results in detonation due to pressure wave collision. Therefore, pre-ignition and detonation will occur, rather than seal failure, oil thickening or bearing seizure, which need different dominating mechanisms.
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