Q. Choose the correct statement, detonation can be controlled by

A
Varying compression ratio
B
Using lean mixture
C
Retarding the spark timing
D
Reducing the r.p.m
Solution:
  • Detonation can be controlled by retarding the spark timing.
  • Engine detonation refers to spontaneous combustion of the remaining fuel/air mixture in the chamber after normal spark-initiated combustion.
  • Detonation occurs when excessive heat and pressure in the combustion chamber causes the air/fuel mixture to ignite on its own.
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