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← ScienceWhich mechanism limits efficiency of diesel engine under high load conditions?
A)Intercooler inefficiency reduces air density
B)Incomplete combustion generates soot buildup✓
C)Lean misfire increases unburned hydrocarbons
D)Valve float causes intake charge dilution
💡 Explanation
Under high loads, diesel engines experience incomplete combustion because insufficient time exists for proper air-fuel mixing and burning, generating soot that reduces efficiency. Therefore, soot buildup results, rather than intercooler inefficiency, lean misfire, or valve float, each involving different parameters and failure modes.
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