answersLogoWhite

0


Best Answer

Cetane number is derived from an engine test. It measures the ignition characteristics of diesel fuel, (which detonates under pressure). The higher the Cetane number, the greater the resistance to pre-ignition. A high cetane diesel can be used in high compression (more effcient) engines.

Diesel Index (DI) is a calculation allowing an approximation of Cetane No., when there is no Cetane Test Engine available. The DI is derived from the Analine Point. The Analine Point is a temperature, where analine and the (diesel) sample become completely miscible.

DIESEL INDEX = ((ANILINE POINT(DEG F))(API GRAVITY))/100

A higher aniline point (and therefore a lower aromatic content) in diesel oil is desirable, in order to prevent autoignition in diesel engines.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: Cetane number equals Diesel Index - 3?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the international norme for cetane index of diesel fuels?

U.S. goes by Cetane Number of 40 whereas EU follows a Cetane Index of 46 plus a Cetane Number of 51. Other countries either specify Cetane Number or Cetane index, some of them specify both. Cetane Number can be improved by adding chemical additives , the Cetane Index cannot be influenced since its a quality of base fuel.


How diesel index of a given oil sample is calculated?

The Diesel Index indicates the ignition quality of the fuel. It is found to correlate, approximately, to the cetane number of commercial fuels. It is obtained by the following equation


What is the formula used in diesel index calculation?

diesel index = aniline point *API(1/100)


What is refractive index of diesel?

1.45


What is the refractive index of diesel?

The refractive index of diesel fuel typically ranges from 1.48 to 1.52 at room temperature. This value may vary slightly depending on the composition and temperature of the diesel fuel.


What is index number?

what is index number


What the uses of index number in index index?

uses of index


The acronym for PIN?

Its Postal Index Number and for mobile its Personal Identity Number.


Disadvantages of index number?

disadvantages of index numbers


What is the Unit test in index number?

unit test in index


How the density of diesel measured?

The density of diesel is typically measured using a hydrometer or a densitometer. These instruments determine the density of the diesel fuel by measuring the buoyancy or the refractive index of the liquid. Density can also be calculated by dividing the mass of a given volume of diesel by that volume.


Your index number can not be found please help me out?

Why should I help you?! It's my index number that cannot be found!