Question:-
Consider the following statements :
1. In the SI engines detonation occurs near the end of combustion whereas in CI engines knocking occurs near the beginning of combustion.
2. In SI engines no problems are encountered on account of pre-ignition.
3. Low inlet pressure and temperature reduce knocking tendency in SI engines but increase the knocking tendency in CI engines.
Which of the statements given above are correct ?
Option (A)
1, 2 and 3
Option (B)
Only 1 and 2
Option(C)
Only 2 and 3
Option(D)
Only 1 and 3
Correct Option:
(D)
Question Solution:
Preignition increases the tendency of knocking in SI as burning charge will be compressed and lead to more increases in temperature.
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