ATD 3rd Assignment

1]discuss the important qualities of si engine fuel?
2]explain different methods to achieve smooth engine operation in si engines?
3]draw and discuss relative merits of I and F head type engines?
4]briefly explain the effect of different factors on knock in SI engines?
5]draw and discuss relative merits of T and L head type engines?
6]a]what are different factors affecting knock in SI engines?
b]what are knocking limited parameters in SI engines?
7]a]define homogeneous mixture?
b]explain stages of combustion in SI engines?
8]a]what are the different types of combustion chambers in SI engine?
b]explain with suitable sketches.
9]a]explain the effect of different operating parameter an flame propagation velocity.
b]what are the different required characteristics of a good combustion chamber for SI engine?explain.
10]a]explain the phenomenon of flame propagation in SI engine combustion
b]how the mixture strength influence rate of burning and flame propagation speed?
11]a]explain the phenomenon of pre-ignition?hoe pre-ignition leads to detonation and vice versa?what are the ill effects of pre-ignitoin?
b]how can pre-ignition be detected?what are pre-ignition inhibitors?