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Title: Literature review of cetane number and its correlations. Progress report, July 1986-March 1987

Technical Report ·
OSTI ID:6299410

This review covers the standard method of determining cetane number (engine tests, ASTM D613) and alternative methods, which comprise 1 engine-test method and 33 cetane indices (predictive equations of cetane number). Of the alternative methods, emphasis is given to those that appear or had appeared promising as good predictors of cetane number. The various cetane indices are categorized according to the type of parameters employed viz, physical properties (e.g., the calculated cetane index, ASTM D976, an approved alternative method to ASTM D613), chemical composition/structure, and physico-chemical properties (e.g., spontaneous ignition tests). Of the physical properties, the combination of distillation temperature(s) and density appear to afford good correlations between cetane index and cetane number. Furthermore, these two parameters continue to feature in the replacement equations of D976. For indices based on a single property, aniline point gives the best prediction.

Research Organization:
Geo-Centers, Inc., Newton Upper Falls, MA (USA)
OSTI ID:
6299410
Report Number(s):
AD-A-181753/5/XAB; GC-TR-87-1628
Country of Publication:
United States
Language:
English