Discussion

Which of the following statement is wrong ?

A.In compression ignition engines, detonation occurs near the beginning of combustion.
B.Since the fuel, in compression ignition engines, is injected at the end of compression stroke, therefore, there will be no pre-ignition.
C.To eliminate knock in compression ignition engines, we want to achieve auto-ignition not early and desire a long delay period.
D.In compression ignition engines, because of hetrogeneous mixture, the rate of pressure rise is comparatively lower.

Answer: C

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