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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.
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What the uses of index number in index index?
uses of index
What is 3600 in standard index form?
The number 3600 in standard index form is expressed as (3.6 \times 10^3). This representation indicates that 3.6 is multiplied by 10 raised to the power of 3, which equals 3600.
What is the meaning of coordinate index?
Coordinate index ? Sure ! It's easy ... You just have to coordinate your index number !
Discuss the importance of index number?
ndex numbers are basically economic data figures that reflect the price or quantity compared with standard or base value. It is normally expressed as 100 times the ratio of the base value that equals 100. Index numbers are very important for economic analysis. They summarize movements in a group of related variables. The consumer Price index is one of the most commonly used form of index number. It measures the changes in the retail prices.
What does index mean in maths terms?
index is the same as power The index of a number say how many times you have to use the number in a multiplictaion. e.g; 2 10 = 10*10=100
