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Friday, January 28, 2011

ATD 4th Assignment

1]explain the phenomenon of knock in CI engines and campare with SI engine knock?
2]explain the purpose of super charging in CI engines?
3]explain types of nozzles used in CI engines?
4]bring out clearly the processes of combustion in CI engines and also explain various stages of combustion?
5]a]how does combustion take place in compression-ignition engine?
b]what is the effect of A/F ratio on power output of CI engine?
6]explain how are the following are affect the delay period.
a]compression ratio,engine speed.
b]output,atomization of fuel and duration of injection.
7]a]explain in detail ignition delay on p-0 diagaram?
b]explain period ofrapid combustion in CI engine?
8]classify and explain the CI engine combustion chambers?
9]a]what are different fuel injectiors used in CI engines?explain briefly
b]draw p-0 daigarm and explain different stages of combustion in CI engines
10]a]explain the influence of different operating parameters on ignition delay during combustion process in CI engine.
b]describe the phenomenon of knocking in CI engine and hoe it is different from SI engine detanation
11]what is diesel knock?how to minimize knocking in CI engine.
12]a]what is the need of air movement in CI  engine combustion chamber?explain
b]discuss the influence of parameters on diesel knock in CI engine

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