Which outcome results when the fuel injector duty cycle exceeds design limits in a turbocharged engine?

💡 Explanation

Engine knock occurs due to excessive fuel enrichment, leading to incomplete combustion; the mechanism is fuel auto-ignition caused by increased cylinder temperatures. Therefore, detonation occurs earlier, rather than compressor surge or valve erosion, because the overly rich air-fuel mix reacts violently under the stress of turbocharging.

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