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← TechnologyIn a turbodiesel engine, which outcome occurs when cylinder wall lubrication fails during cold starts?
A)Piston ring micro-welding appears✓
B)Detonation-induced shockwave amplification
C)Increased fuel injector back-leakage
D)Valve float occurs prematurely
💡 Explanation
Insufficient initial lubrication leads to asperity contact and thermal friction, because boundary lubrication breaks down therefore promoting solid-state bonding and the `Adhesion Wear` mechanism. This causes microwelding of piston rings rather than detonation or fuel issues or untimely valve actions.
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