Which risk increases when an engine piston's oil control ring fails to effectively scrape oil from cylinder walls?

💡 Explanation

When the oil control ring fails, excess oil enters the combustion chamber because the lubrication system no longer effectively manage film thickness, leading to carbon deposits on the spark plug and piston crown, causing pre-ignition. Therefore pre-ignition risk increases rather than detonation, bearing failure or coolant boiling which require unrelated system faults.

• Which consequence results when rapid de-energization occurs in a large power transformer?
• Which outcome occurs when a PLC controlling a robotic arm experiences timing inaccuracies during coordinated motion?
• Which risk increases with a poorly insulated refrigeration system operating in humid conditions?
• Which risk increases within a diesel engine when asymmetric crankshaft journal wear exceeds specified tolerances?
• Which outcome results when a multi-axis robotic arm's absolute rotary encoder fails?
• Which risk increases when exceeding a transformer's breaker interrupt rating?