Diesel Index Calculator

✖API gravity is defined as a measure of how heavy or light a petroleum liquid is compared to water.ⓘ API Gravity [°API]			+10% -10%
✖Diesel Aniline Point is defined as the lowest temperature at which equal volumes of aniline and diesel are completely miscible.ⓘ Diesel Aniline Point [AP]			+10% -10%

✖Diesel Index is defined as a measure of the ignition quality of a diesel fuel.ⓘ Diesel Index [DI]

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Formula

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Diesel Index

Formula

`"DI" = "°API"*("AP"/100)`

Example

`"109.47"="41"*("267°F"/100)`

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Diesel Index Solution

STEP 0: Pre-Calculation Summary

Formula Used

Diesel Index = API Gravity*(Diesel Aniline Point/100)
DI = °API*(AP/100)
This formula uses 3 Variables

Variables Used

Diesel Index - Diesel Index is defined as a measure of the ignition quality of a diesel fuel.
API Gravity - API gravity is defined as a measure of how heavy or light a petroleum liquid is compared to water.
Diesel Aniline Point - (Measured in Fahrenheit) - Diesel Aniline Point is defined as the lowest temperature at which equal volumes of aniline and diesel are completely miscible.

STEP 1: Convert Input(s) to Base Unit

API Gravity: 41 --> No Conversion Required
Diesel Aniline Point: 267 Fahrenheit --> 267 Fahrenheit No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

DI = °API*(AP/100) --> 41*(267/100)

Evaluating ... ...

DI = 109.47

STEP 3: Convert Result to Output's Unit

109.47 --> No Conversion Required

FINAL ANSWER

109.47 <-- Diesel Index

(Calculation completed in 00.004 seconds)

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Credits

Created by Harsh Kadam

Shri Guru Gobind Singhji Institute of Engineering and Technology (SGGS), Nanded

Harsh Kadam has created this Calculator and 50+ more calculators!

Verified by Vaibhav Mishra

DJ Sanghvi College of Engineering (DJSCE), Mumbai

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< 9 Basics of Petrochemicals Calculators

Viscosity Index Mixture

Go Viscosity Index = ((Aromatic's Viscosity-Lube Oil Viscosity)/(Aromatic's Viscosity-Paraffinic Viscosity))*100

BMCI Number

Go Bureau of Mines Correlation Index (BMCI) Number = (48640/Temperature)+(473.7*Specific Gravity)-456.8

Characterisation Factor

Go Characterisation Factor = ((Molal Average Boiling Point)^(1/3))/Specific Gravity

Molal Average Boiling Point Based on Characterisation Factor

Go Molal Average Boiling Point = (Characterisation Factor*Specific Gravity)^3

Aniline Point

Go Diesel Aniline Point = (Diesel Index*100)/API Gravity

Diesel Index

Go Diesel Index = API Gravity*(Diesel Aniline Point/100)

Saybolt Method Viscosity

Go Saybolt Method Viscosity = (0.219*Time)-(149.7/Time)

API Gravity

Go API Gravity = (141.5/Specific Gravity)-131.5

Melt Flow Index

Go Melt Flow Index = Weight of Polymer/10

Diesel Index Formula

Diesel Index = API Gravity*(Diesel Aniline Point/100)
DI = °API*(AP/100)

What is the significance of Diesel Index

Diesel index is a calculated value that is used to estimate the cetane number of a diesel fuel.Cetane number is a measure of the ignition quality of a diesel fuel, and a higher cetane number indicates a fuel that ignites more easily and smoothly.

How to Calculate Diesel Index?

Diesel Index calculator uses Diesel Index = API Gravity*(Diesel Aniline Point/100) to calculate the Diesel Index, Diesel Index is a calculated value that is used to estimate the cetane number of a diesel fuel. Diesel Index is denoted by DI symbol.

How to calculate Diesel Index using this online calculator? To use this online calculator for Diesel Index, enter API Gravity (°API) & Diesel Aniline Point (AP) and hit the calculate button. Here is how the Diesel Index calculation can be explained with given input values -> 109.47 = 41*(403.705555677414/100).

FAQ

What is Diesel Index?

Diesel Index is a calculated value that is used to estimate the cetane number of a diesel fuel and is represented as DI = °API*(AP/100) or Diesel Index = API Gravity*(Diesel Aniline Point/100). API gravity is defined as a measure of how heavy or light a petroleum liquid is compared to water & Diesel Aniline Point is defined as the lowest temperature at which equal volumes of aniline and diesel are completely miscible.

How to calculate Diesel Index?

Diesel Index is a calculated value that is used to estimate the cetane number of a diesel fuel is calculated using Diesel Index = API Gravity*(Diesel Aniline Point/100). To calculate Diesel Index, you need API Gravity (°API) & Diesel Aniline Point (AP). With our tool, you need to enter the respective value for API Gravity & Diesel Aniline Point and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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