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Which outcome occurs from exceeding diesel engine's adiabatic compression limit?

A)Premature ignition auto-detonation increase
B)Lowered exhaust incomplete fuel burn
C)Higher fuel combustion thermodynamic efficiency
D)Reduced NOx pollutant formation increase

💡 Explanation

Premature ignition occurs because exceeding the adiabatic compression limit causes excessive temperature rise leading to spontaneous ignition. Exceeding limits leads to auto-detonation, rather than thermodynamically efficient combustion conditions or decreased NOx production because controlled combustion becomes unstable.

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