A study of diesel spray and flame by an image processing technique. (1st. Rep. Effects of high pressure injection on spray characteristics and soot formation process).
Open Access
- 1 January 1988
- journal article
- Published by Japan Society of Mechanical Engineers in TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
- Vol. 54 (499) , 741-748
- https://doi.org/10.1299/kikaib.54.741
Abstract
The characteristics of diesel spray and flame in a quiescent atmosphere were studied as a function of injection pressure ranging from 30 to 110 MPa. Measurements included the spray form and Sauter mean diameter of a non-evaporating spray, the liquid phase penetration of an evaporating spray and the visualization of sooting zone in a flame. Experimental results show that high pressure injection improves the atomization and air entrainment of a non-evaporating spray and that the liquid phase penetration of an evaporating spray is hardly affected by injection pressure, demonstrating a promotion of evaporation with injection pressure. Visualization of the sooting zone in a flame made it clear that high pressure injection is advantageous in reducing soot formation and shortening the combustion duration.Keywords
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