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← ScienceWhich outcome occurs when the exhaust valve on a two-stroke diesel engine fails during its thermodynamic cycle?
A)Increased cylinder temperature and pressure✓
B)Decreased fuel injection timing accuracy
C)Reduced lubrication oil consumption
D)Enhanced air-fuel mixture homogeneity
💡 Explanation
Increased temperature/pressure happens because valve failure prevents proper exhaust, causing hot gases to remain due to incomplete scavenging via the thermodynamic cycle; the **residual heat** drives temperature increases, therefore increasing cylinder pressure rather than the other options that depend on different factors.
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