Which outcome occurs when journal bearing clearance increases excessively within internal combustion engine crankshaft assembly?

💡 Explanation

When bearing clearance increases, hydrodynamic lubrication fails because the oil film thickness reduces below a critical value, causing increased asperity contact and adhesive wear. Therefore oil film rupture and accelerated wear result, rather than fuel system, exhaust temperature, or turbocharger issues, which relate to different subsystems.

• Which outcome occurs when thermoelectric generator's (TEG) hot-side temperature drastically increases?
• Which effect increases when an internal combustion engine's fuel injectors deliver excessive fuel volumes under normal operating temperature?
• Which risk increases when a hydraulic relief valve chatters due to rapid pressure fluctuations?
• Which risk increases when optical fibers exceed their modal bandwidth capacity in wavelength division multiplexing (WDM) systems?
• Which outcome occurs when ethylene glycol concentration falls too low in a chiller unit's closed-loop system subjected to sub-zero temperatures?
• Which outcome occurs when a steel I-beam in bridge construction experiences repeated thermal expansion cycles under heavy load?