Answer / shaikh navid

Term associate with fuel:
Patrol:
octane no is to refer capability to resist knocking in patrol engine means highest octane no in patrol good for engine usually in india octane no is 85/90

Diesel:
cetane no: is to refer capability to resist detonating in Diesel engine higher the cetane no higher the resisiting capability

both are the properties of fuel in i.c. engine

Answer / vikas bhardwaj

Octane No.- Octane number is defined as the percentage, by
volume, of iso octane in the mixture of iso octane and h-
heptane. It is the measure of rating of SI engine.

Cetane No.-Cetane number is defined as the percentage, by
volume, of n-cetane in the mixture of n-cetane and alpha
methyl napthalene. It is the measure of rating of CI engine.

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