App for Calculated Cetane Index CCI based on ASTM D4737 - Procedure A

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This App for calculated Cetane Index by Four Variable Equation provides a means for estimating the ASTM cetane number (Test Method D613) of distillate fuels from density and distillation recovery temperature measurements. The value computed from the equation is termed the Calculated Cetane Index by Four Variable Equation.

 Similar Apps on Petroleum Calculations developed by RJ Patel- see here.

 Procedure A is to be used for Specification D975, Grades No. 1–D S15, No. 1–D S500, No. 1–D S5000, No. 2–D S15, No. 2–D S5000, and No. 4–D.
CCI - Procedure A - D4737  MBP in C

The Calculated Cetane Index by Four Variable Equation is not an optional method for expressing ASTM cetane number. It is a supplementary tool for estimating cetane number when a result by Test Method D613 is not available and if cetane improver is not used. As a supplementary tool, the Calculated Cetane Index by Four Variable equation must be used with due regard for its limitations as detailed in standard test method ASTM D4737.

 The Calculated Cetane Index by Four Variable Equation is useful for estimating ASTM cetane number when a test engine is not available for determining this property directly and when cetane improver is not used. The App may be conveniently employed for estimating cetane number when the quantity of sample available is too small for an engine rating. In cases where the ASTM cetane number of a fuel has been previously established, the Calculated Cetane Index by Four Variable Equation is useful as a cetane number check on subsequent batches of that fuel, provided the fuel’s source and mode of manufacture remain unchanged.
You can obtain this app by writing to rjpatelioc2014@gmail.com.

Author's Profile clik here.                          
List of all blog articles on Petroleum QC  by RJ Patel.


 rjpatelioc2014@gmail.com

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Keywords: Cetane Number,   Cetane Index,  ASTM D976,  ASTM D4737,   Distillate fuels

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