Which risk increases when hot exhaust gases impinge on a turbocharger turbine operating outside its design parameters?

💡 Explanation

When operating outside design parameters, exhaust gases overheat the turbine; this activates creep failure because prolonged exposure to high temperatures and stress causes the metal to deform permanently. Therefore, creep failure of the blades occurs, rather than converter poisoning, compressor surge or oil cooler clogging, which are related to other failure modes.

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