Mechanical Engineering - Automobile Engineering - Discussion
Discussion Forum : Automobile Engineering - Section 1 (Q.No. 45)
45.
The cetane number of a Diesel fuel is a measure of
Discussion:
32 comments Page 2 of 4.
Vijay Nokhwal said:
7 years ago
Answer is right, cetane number indicates delay period of combustion in pressure condition. Higher cetane number gives higher compression ratio.
Colin said:
8 years ago
I think C is the answer.
Abdul khader said:
8 years ago
D is the right answer. Cetane and octane number both measure the tendency of the fuel to ignite spontaneously. For diesel cetane number is 40-45.
For petrol octane number is 80-90.
If cetane number is low then ignition quality vl be poor and time delay will be high.
For petrol octane number is 80-90.
If cetane number is low then ignition quality vl be poor and time delay will be high.
ANIL said:
8 years ago
Cetane number is the function of a fuel's ignition delay and the time period between the start of injection and the first identifiable pressure increase during combustion of the fuel. In a particular diesel engine, higher cetane fuels will have shorter ignition delay periods than lower Cetane fuels.
Vinay said:
8 years ago
D is correct. I too agree.
Nihar vaghela said:
9 years ago
The resulting cetane number is then calculated by determining which mixture of cetane (hexadecane) and isocetane (2, 2, 4, 4, 6, 8, 8-heptamethylnonane) will result in the same ignition delay and another testing by ignition tester.
Sanjay said:
9 years ago
It should be an Ignition quality.
Mehulkumar said:
9 years ago
Measure of the ignition quality: Cetane Number.
Shivkumar said:
9 years ago
Cetane number or CN is an inverse function of a fuel's ignition delay and the time period between the start of injection and the first identifiable pressure increase during combustion of the fuel.
In a particular diesel engine, higher cetane fuels will have shorter ignition delay periods than lower Cetane fuels.
So option D is the correct answer.
In a particular diesel engine, higher cetane fuels will have shorter ignition delay periods than lower Cetane fuels.
So option D is the correct answer.
Suhail said:
10 years ago
Cetane number is actually a measure of a fuel's ignition delay. This is the time period between the start of injection and start of combustion (ignition) of the fuel.
In a particular diesel engine, higher cetane fuels will have shorter ignition delay periods than lower cetane fuels.
In a particular diesel engine, higher cetane fuels will have shorter ignition delay periods than lower cetane fuels.
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