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← ScienceWhich consequence occurs when lubrication fails in a diesel engine?
A)Increased frictional heat generation✓
B)Enhanced combustion efficiency
C)Reduced exhaust emission rates
D)Improved fuel economy performance
💡 Explanation
Increased frictional heat generation happens due to the mechanism of adhesive wear, because without lubrication, surfaces directly contact and generate significant friction. Therefore, heat increases, rather than efficiency, since there's no fluid boundary and energy dissipated is much greater.
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