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← ScienceWhich mechanism increases diesel engine energy efficiency with higher compression ratios?
A)Reduced heat loss during combustion✓
B)Increased fuel density for injection
C)Decreased auto-ignition temperature
D)Enhanced in-cylinder turbulence
💡 Explanation
With higher compression ratios, reduced heat loss during combustion occurs because the combustion duration shortens (relative to the cycle), leaving less time for heat to escape through cylinder walls, improving energy efficiency. Therefore reduced heat loss improves efficiency instead of relying on density, auto-ignition, or turbulence which are less directly impactful.
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