Question:-
The Cetane number of automotive diesel fuel used in India is in which one of the following ranges?
Option (A)
30—40
Option (B)
41—50
Option(C)
51—60
Option(D)
61—70
Correct Option:
(B)
Question Solution:
Cetane number ® The cetane rating of a diesel fuel is a measure of its ability to autoignite quickly when it is injected into the compressed and heated air in the engine. Through ignition delay is affected by several engine design parameter such as compression ratio, injection time, inlet air temperature etc. it is also dependent on hydrocarbon compression of fuel and to some extent on its volativity characteristics. The cetane number is a numerical measure of the influence. The diesel delay. Higher the cetane rating of fuel lesser is the property for diesel knock. In India, cetane number lies between 40 to 60.
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