A Study of Marginal Compression Ignition 670948

The effects of engine and fuel variables under marginal compression ignition conditions have been investigated as part of a comprehensive combustion program now is progress at the U. S. Army Fuels and Lubricants Research Lab. To accomplish the program objectives it was first necessary to develop a suitable engine technique and several single-cylinder engine procedures were considered.
The one decided on provided a means of quantitatively evaluating the marginal combustion performance of fuels with a degree of repeatability nearly equivalent to that of the ASTM cetane number procedure. Cursory studies with individual fuel components indicated that the heavier aromatics were the most detrimental to marginal combustion performance.


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