Accession Number : ADA194226

Title :   Evaluation of Cetane Indices for Marine Fuels.

Descriptive Note : Progress rept. Apr-Sep 87,

Corporate Author : GEO-CENTERS INC NEWTON CENTRE MA

Personal Author(s) : Pande, Seetar G

PDF Url : ADA194226

Report Date : Nov 1987

Pagination or Media Count : 89

Abstract : In this study, 14 cetane indices were evaluated with respect to their correlations with cetane number. Most of the evaluations were performed on a 28 fuel set taken from a worldwide survey of commercial marine fuels obtained in 13 different countries. Cetane numbers of the fuels ranged from approx. 41-57. Of the 14 cetane indices, 9 were published cetane indices and 5 were trial correlations. The published cetane indices included ASTM D976-80, Ingham et al.'s proposed equation for replacement of D976-80 (their distillation temperatures/density equation), Ingham et al.'s aniline point equation, the Canadian General Standards Borad cetane index, the Collins and Unzelman equation, the Ethyl Corp. equation, the SWRI cetane index for fuels containing aromatics, as well as the Diesel Index and ASTM D976-66 for comparison purposes. The trial cetane indices included 4 correlations based on established parameters and 1 correlation based on refractive index and density. Evaluations were based on regression analyses of cetane number vs cetane index as well as on the predictability of the cetane indices as defined by arbitrary criteria imposed on the results.

Descriptors :   *FUELS, AROMATIC COMPOUNDS, CETANE NUMBER, COMMERCE, DENSITY, DIESEL ENGINES, DISTILLATION, REFRACTIVE INDEX, REGRESSION ANALYSIS, STANDARDS, SURVEYS, TEMPERATURE, TEST AND EVALUATION, IGNITION

Subject Categories : Fuels

Distribution Statement : APPROVED FOR PUBLIC RELEASE