Which risk significantly increases when liquid fuel enters an internal combustion engine cylinder *after* combustion?

💡 Explanation

When liquid fuel enters the cylinder after combustion (post-combustion injection), it can wash away the oil film, leading to increased friction and potential damage in the piston-connecting rod interface, increasing the risk of fatigue. Therefore connecting rod fatigue results, rather than valve failure, turbocharger erosion, or higher NOx which are linked to different mechanisms.

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