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In order to meet the requirement of getting combustion information quickly and saving calculation time, cylinder pressure difference method was introduced to study combustion condition. Cylinder pressure is used to be combustion indication flag in order to meet combustion information
requirement, math algorithm of fast dispersed resolution to combustion process by pressure difference is presented. Combustion intensity, phase and heatreleasing rate are provided to describe combustion condition. Geometry character variable in pressure difference curve are selected as character
parameters to specialize overall combustion character, relation of pressure character index with injection timing and injection quantity was resolved by simulation and measurement of pressure data, and change trend of each pressure character index with diesel engine emission NOx
based on experimental data was analyzed. The results indicated that fast discrete resolution for combustion process with pressure parameter was effective.
ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.